Calculating an employee’s gross pay, deductions, and net pay is only half of payroll’s job; payroll is equally responsible for calculating and remitting the amounts the employer itself owes because it has employees. Employer payroll expenses are the financial obligations that sit on top of, and separate from, whatever is deducted from an employee’s own paycheque. In Canada these fall into four categories: employer CPP contributions, employer EI premiums, workers’ compensation premiums paid to a provincial or territorial board, and, in certain provinces, an employer health or payroll tax. None of these come out of the employee’s pay – they are additional costs the employer incurs and remits directly – and together they can add a meaningful percentage on top of an organization’s total wage bill, which is why budgeting for them separately matters.
Employer CPP Contributions
Employers must match every employee’s CPP contribution dollar for dollar: whatever amount is withheld from an employee’s pay for CPP, the employer remits an identical amount on that employee’s behalf. If an employee’s CPP contribution for a pay period is calculated using the standard exemption and current-year rate, the employer’s contribution for that same period is simply that same dollar figure. Where an employee’s earnings are high enough to trigger the CPP2 additional contribution tier, the employer must match that CPP2 amount as well, using the same one-to-one ratio. Employers do not make CPP contributions on behalf of independent contractors, since contractors are not employees; a self-employed individual instead pays both the employee and employer portions of CPP directly, though certain self-employment income can be excluded from CPP contributions by filing the relevant CRA election form.
Employer EI Premiums and the Premium Reduction Program
Unlike CPP, employer EI premiums are not matched one to one – they are calculated as 1.4 times whatever the employee’s EI premium was for the period, a ratio set because employers, as the party responsible for layoffs, are expected to shoulder a larger share of funding the EI system. An employer that offers an approved short-term disability plan can apply to Service Canada for a reduction to this 1.4 multiplier, lowering the employer’s EI cost below the standard rate. The logic behind the reduction works both ways: the employer benefits from a lower EI expense, while the government benefits because employees covered by an employer’s short-term disability plan draw on that plan instead of EI benefits during a short-term absence, reducing overall EI payouts. Once granted, a reduction stays in place unless the employer changes or cancels the underlying disability plan. The CRA’s Payroll Deductions Online Calculator can generate a full employer remittance summary showing both the employer and employee portions of CPP and EI side by side, which is useful for verifying that manual and software calculations agree.
Workers’ Compensation Premiums
Every Canadian province and territory (except the Northwest Territories and Nunavut, which share one board) operates a Workers’ Compensation Board that administers a no-fault compensation scheme for employees injured or made ill by their work. No-fault means an injured employee does not need to prove the employer was negligent – they simply apply to the WCB, which investigates the claim and, if approved, provides medical treatment, wage replacement, and other supports such as vocational rehabilitation. Employers fund this system through mandatory WCB premiums, and most industries are covered unless specifically exempted by provincial or territorial law. Premium rates are not uniform: each jurisdiction sets rates by industry classification, reflecting that sector’s historical volume of workplace injury claims, so a higher-risk industry such as construction pays a substantially higher rate per dollar of payroll than a lower-risk office-based industry, and rates for the same type of work can also differ meaningfully from one province to the next.
Calculating a WCB Premium – A Worked Example
Calculating a WCB premium follows three steps. First, calculate each employee’s net assessable earnings (NEA), which is gross earnings capped at the jurisdiction’s maximum assessable earnings threshold for the year – earnings above that threshold are simply excluded from the premium calculation. Second, determine the applicable premium rate for the employer’s industry classification, usually expressed as a dollar amount per $100 of NEA. Third, multiply total NEA across all employees by that rate to find the total premium owed. Consider GreenLeaf Landscaping, an Alberta employer with three employees earning $72,000, $105,000, and $60,000 respectively, operating under a jurisdiction with a maximum assessable earnings threshold of $98,000 and a landscaping-industry premium rate of $1.10 per $100 of NEA. The first employee’s NEA is their full $72,000, since it falls under the threshold; the second employee’s NEA is capped at $98,000, since their actual earnings of $105,000 exceed the threshold; the third employee’s NEA is their full $60,000. Total NEA across all three employees is $72,000 plus $98,000 plus $60,000, or $230,000. Dividing $230,000 by 100 gives 2,300 units of $100, and multiplying by the $1.10 rate produces a total WCB premium of $2,530.00 for the year.
Provincial Employer Health and Payroll Taxes
Several Canadian provinces levy a payroll-based tax directly on employers to help fund healthcare and, in some cases, post-secondary education systems – a cost distinct from CPP, EI, and WCB premiums. As of the most recent guidance, British Columbia, Manitoba, Newfoundland and Labrador, Ontario, and Quebec each impose such a tax, and each sets its own rate structure based on total payroll size. Most of these provinces also exempt smaller employers entirely: an employer is generally exempt if its total annual remuneration across all employees falls below a province-specific threshold, so a small business with modest total payroll may owe no employer health tax at all even though it operates in a province that levies one, while a larger employer in the same province is assessed based on how far its payroll exceeds that threshold.
Quick Revision Summary
Employer payroll expenses sit on top of employee deductions and include employer CPP contributions, employer EI premiums, WCB premiums, and, in some provinces, an employer health or payroll tax. Employer CPP contributions match the employee’s CPP contribution one to one, including any CPP2 amount. Employer EI premiums equal 1.4 times the employee’s EI premium, though an approved short-term disability plan can qualify an employer for a reduced multiplier. WCB premiums are calculated by capping each employee’s earnings at the jurisdiction’s maximum assessable earnings threshold to find net assessable earnings, then multiplying total NEA by an industry-specific rate per $100 of earnings – rates vary significantly by both industry risk and jurisdiction. Provincial employer health or payroll taxes apply only in certain provinces, generally exempt small employers below a payroll threshold, and are calculated independently of CPP, EI, and WCB.
A budget is a detailed financial plan for a future period, prepared before that period begins, which means every figure in it is an estimate rather than an actual result. Organizations rely on budgets for three distinct purposes. Planning uses the budget, once complete, to schedule production, arrange purchasing, and guide capital investment decisions before the period starts. Controlling uses the budget during the period as a set of spending limits and targets – management is expected to keep actual raw material purchases, labor costs, and administrative spending within the amounts the budget authorized. Performance evaluation compares actual results against the budgeted figures after the period ends, which highlights which areas met their targets, which fell short, and whether the budget’s own assumptions need to be revised going forward. Because unexpected events – a shift in demand, a supply disruption, a change in economic conditions – can occur mid-period, budgets are commonly revised rather than treated as fixed once finalized.
The Master Budget and Its Required Sequence
An organization’s complete collection of individual budgets is called the master budget, and its components are interrelated: figures calculated in one budget feed directly into the next, so the budgets must be prepared in a specific order rather than all at once. The sales budget always comes first, because the number of units a company expects to sell drives nearly every other resource decision – how many units to produce, how much raw material to buy, how many labor hours to schedule, and how much manufacturing overhead and administrative spending to plan for. From the sales budget, a manufacturer proceeds through the production budget, the direct materials purchases budget, the direct labor budget, the manufacturing overhead budget, the cost of goods sold budget, the selling and administrative expenses budget, and finally the budgeted income statement, each one drawing inputs from the budgets completed before it.
The Sales Budget – A Worked Example
Consider LumaCandle Co., a scented candle maker whose owner, Priya, is preparing a quarterly master budget for the upcoming year. Each candle sells for $12.00, and Priya projects sales of 5,000 units in the first quarter based on prior-year trends and current order commitments. The sales budget for the quarter is simply budgeted units times selling price: 5,000 units times $12.00 equals $60,000 in budgeted sales revenue for the quarter – the single figure every later budget in the sequence will build from.
The Production Budget – A Worked Example
The production budget converts budgeted sales into the number of units that actually need to be manufactured, and it must also account for a desired cushion of finished goods inventory on hand at the end of the period, since running out of inventory is worse than holding a modest buffer. Priya wants ending finished goods inventory each quarter to equal 15 percent of the following quarter’s budgeted sales, and she projects 6,200 units in sales for the second quarter, making the first quarter’s desired ending inventory 15 percent of 6,200, or 930 units. The company begins the first quarter with 750 units already in finished goods inventory, carried forward from the prior year. Required production is budgeted sales plus desired ending inventory minus beginning inventory: 5,000 plus 930 minus 750, which equals 5,180 units that must be produced in the first quarter.
The Direct Materials Purchases Budget – A Worked Example
Once required production is known, the direct materials purchases budget determines how much raw material to buy, again building in a small buffer of ending raw materials inventory. Each candle requires 0.8 pounds of wax blend costing $2.50 per pound. Total material needed for this quarter’s production is 5,180 units times 0.8 pounds, or 4,144 pounds. Priya wants ending raw materials inventory equal to 10 percent of the following quarter’s material needs; with second-quarter production estimated at 6,320 units requiring 5,056 pounds, the desired ending inventory is 10 percent of 5,056, or 505.60 pounds. The company begins the quarter with 380 pounds already on hand. Required purchases are total material needed plus desired ending inventory minus beginning inventory: 4,144 plus 505.60 minus 380, which equals 4,269.60 pounds, costing 4,269.60 times $2.50, or $10,674.00 for the quarter.
Direct Labor and Manufacturing Overhead Budgets
The direct labor budget converts required production into labor hours and labor cost. Each candle takes 0.05 hours (three minutes) to pour, cool, and package, and workers are paid $16.00 per hour. Total direct labor hours needed are 5,180 units times 0.05 hours, or 259 hours, and total direct labor cost is 259 hours times $16.00, or $4,144.00 for the quarter. The manufacturing overhead budget separates overhead into its variable and fixed components: LumaCandle incurs $0.15 of variable manufacturing overhead per unit produced, plus $8,200 of fixed manufacturing overhead per quarter regardless of volume. Variable overhead for the quarter is 5,180 units times $0.15, or $777.00, and total manufacturing overhead is $777.00 plus $8,200.00, or $8,977.00.
Cost of Goods Sold, Selling and Administrative Expenses, and the Budgeted Income Statement
With direct materials, direct labor, and manufacturing overhead all budgeted, a per-unit product cost can be assembled: $2.00 of direct material per unit (0.8 pounds times $2.50), $0.80 of direct labor per unit (0.05 hours times $16.00), and $1.73 of manufacturing overhead per unit ($8,977.00 total overhead divided by 5,180 units produced), for a total product cost of $4.53 per unit. The cost of goods sold budget applies this per-unit cost to budgeted units in sales, not units produced, since only sold units flow through cost of goods sold: 5,000 units times $4.53 equals $22,650.00 in budgeted cost of goods sold for the quarter. The selling and administrative expenses budget separately projects $1.20 of variable selling and administrative cost per unit sold plus $14,500 of fixed selling and administrative cost per quarter, giving 5,000 times $1.20, or $6,000.00, plus $14,500.00, for a total of $20,500.00. The budgeted income statement then combines all of these: sales of $60,000.00 minus cost of goods sold of $22,650.00 gives a gross margin of $37,350.00, and subtracting the $20,500.00 in selling and administrative expenses produces budgeted net operating income of $16,850.00 for the quarter.
Quick Revision Summary
Budgets serve three purposes: planning before the period, controlling spending during the period, and evaluating performance after the period by comparing actual results to budgeted figures. The master budget’s components must be built in sequence, starting with the sales budget, since each later budget depends on figures from the ones before it: sales, then production, then direct materials purchases, then direct labor, then manufacturing overhead, then cost of goods sold, then selling and administrative expenses, and finally the budgeted income statement. The production budget adds desired ending inventory and subtracts beginning inventory from budgeted sales to find required production; the direct materials purchases budget applies that same logic to raw materials. Cost of goods sold is calculated by applying a per-unit product cost (direct material plus direct labor plus applied manufacturing overhead) to budgeted units in sales, while the budgeted income statement subtracts cost of goods sold and selling and administrative expenses from sales, in that order, to reach net operating income.
A single companywide income statement tells management whether the organization as a whole made money, but it hides which parts of the business actually drove that result. An organizational segment is any part of a business that management wants separate cost, revenue, or profit data for – a division, an individual store, a geographic region, or a product line. Segmented income reporting breaks total company results down along one or more of these lines so managers can see which segments are pulling their weight and which are dragging on overall performance. Because a segmented income statement is built to show cost behavior clearly, it always uses the contribution margin format, classifying every cost as variable or fixed rather than as product or period.
Contribution Margin vs. Segment Margin
Sales revenue and variable costs are almost always easy to trace to a specific segment, since both are driven by the units that segment actually sold or produced, so contribution margin (sales revenue minus variable expenses) is calculated identically whether looking at the whole company or a single segment. The segmented income statement adds a second, more refined figure beyond contribution margin: segment margin, which is contribution margin minus the fixed costs that can be traced specifically to that segment. Segment margin represents a segment’s profitability before any shared, company-level fixed costs are subtracted, and it is the number managers rely on most heavily when judging whether a segment deserves continued investment, since it isolates only the costs and revenue that segment actually controls.
Traceable Fixed Costs vs. Common Fixed Costs
Fixed costs are harder to assign to segments than variable costs because some fixed costs belong to a single segment while others are shared across the whole organization. Traceable fixed costs are costs that can be linked directly to one segment and that would disappear if that segment were eliminated – a product manager’s salary who works exclusively on one division, for instance. Common fixed costs are shared across multiple segments and would continue to exist even if any single segment were dropped – a company president’s salary, for example, or the cost of a shared headquarters building. Traceable fixed costs are subtracted from contribution margin to calculate segment margin, but common fixed costs are never allocated down to individual segments; instead, they are subtracted only once, from the combined total of all segment margins, to arrive at companywide net operating income.
Worked Example: Building a Segmented Income Statement
Consider TrailGear Outdoors, a company with two divisions: Camping Equipment and Hiking Apparel. Company-wide, TrailGear reports $600,000 in sales, $360,000 in variable expenses, and therefore $240,000 in contribution margin, which is a 40 percent contribution margin ratio. Of the company’s $221,500 in total fixed costs, $176,500 is traceable to the two divisions – $95,000 to Camping Equipment and $81,500 to Hiking Apparel – leaving $45,000 in common fixed costs shared across both. Camping Equipment generates $360,000 in sales and $216,000 in variable expenses, giving $144,000 in contribution margin; subtracting its $95,000 in traceable fixed costs leaves a segment margin of $49,000. Hiking Apparel generates $240,000 in sales and $144,000 in variable expenses, giving $96,000 in contribution margin; subtracting its $81,500 in traceable fixed costs leaves a segment margin of $14,500. Adding the two segment margins together gives $63,500 in total divisional segment margin, and subtracting the $45,000 in common fixed costs produces net operating income of $18,500 – exactly matching the figure that would appear on the company’s ordinary, non-segmented contribution margin income statement, since segmenting the data never changes the bottom-line result, only how it is organized.
Segments Within Segments
A larger segment can itself be broken into smaller segments, and this layering can continue as far as management finds useful, provided common fixed costs are never re-allocated down into the smaller layer. Suppose TrailGear further splits its Camping Equipment division ($144,000 contribution margin, $95,000 traceable fixed costs, $49,000 segment margin) into two product lines: Tents and Sleeping Bags. Tents generate $220,000 in sales and $132,000 in variable expenses for an $88,000 contribution margin, while Sleeping Bags generate $140,000 in sales and $84,000 in variable expenses for a $56,000 contribution margin – together matching the division’s $144,000 total. Of the division’s $95,000 in traceable fixed costs, $52,000 is specifically traceable to Tents and $30,000 to Sleeping Bags, leaving $13,000 that is common to the two product lines within the Camping Equipment division (even though it was fully traceable at the division level). Tents therefore has a segment margin of $88,000 minus $52,000, or $36,000, and Sleeping Bags has a segment margin of $56,000 minus $30,000, or $26,000; the two together equal $62,000, and subtracting the $13,000 in costs common to just this division brings the total back to the division’s original $49,000 segment margin.
Segment Cost Volume Profit Analysis
Because a segment’s income statement already uses the contribution margin format, ordinary CVP analysis – the same tools used for the whole company – can be applied to an individual segment or product line. Suppose TrailGear’s management is deciding whether to spend an additional $8,000 on advertising for the Sleeping Bags product line, and a marketing study projects this would generate $25,000 in additional sales revenue. Since Sleeping Bags carries a 40 percent contribution margin ratio ($56,000 contribution margin on $140,000 in sales), the additional $25,000 in revenue would produce $25,000 times 40 percent, or $10,000, in additional contribution margin. Comparing the $10,000 gain in contribution margin against the $8,000 additional advertising cost shows a net benefit of $2,000, so the advertising investment is worth recommending, even though it does not change the product line’s traceable fixed costs.
Breakeven for the Company and for a Segment
Breakeven is the sales level at which net operating income equals zero, and it can be calculated for the whole organization or for any individual segment using the same underlying formula: fixed costs divided by the contribution margin ratio. For the whole company, breakeven in sales dollars is total fixed costs divided by the overall contribution margin ratio – for TrailGear, $221,500 divided by 40 percent, or $553,750. For an individual segment, only that segment’s own traceable fixed costs are used in the formula, since common fixed costs would continue to exist even if the segment’s sales fell to zero and are therefore irrelevant to that segment’s own breakeven point. For the Camping Equipment division, breakeven in sales dollars is its $95,000 in traceable fixed costs divided by its 40 percent contribution margin ratio, or $237,500 – meaning Camping Equipment needs to generate at least $237,500 in sales before it covers its own traceable costs, independent of whatever the Hiking Apparel division or the company’s shared common costs are doing.
Quick Revision Summary
Segmented income reporting uses the contribution margin format to show profitability by division, product line, region, or any other segment management wants visibility into. Contribution margin (sales minus variable costs) is calculated the same way at the segment level as at the company level. Segment margin subtracts only a segment’s own traceable fixed costs from its contribution margin, while common fixed costs – which would continue regardless of what happens to any one segment – are subtracted only once, from the total of all segment margins combined, to reach companywide net operating income. Segments can be broken into smaller segments repeatedly, with each layer separating its own traceable and common fixed costs. Because segmented statements already use the contribution margin format, CVP analysis and breakeven calculations apply directly at the segment level, with a segment’s own breakeven using only its traceable fixed costs divided by its own contribution margin ratio.
Net pay is the amount an employee actually receives after every deduction is subtracted from gross pay, and although payroll software performs this calculation automatically, payroll professionals still need to understand the underlying steps well enough to verify the software is producing the correct number. The calculation proceeds in a fixed order: first, gather and verify all payroll-related information for the employee and the pay period; second, determine gross earnings for that period; third, calculate every deduction that applies to the period; and fourth, subtract total deductions from gross earnings (and taxable benefits and allowances) to arrive at net pay, then add back any non-taxable benefits or allowances that are paid out through the paycheque itself. That last step matters because non-taxable amounts do not affect any of the deduction calculations along the way, but they still need to appear on the employee’s cheque, so they are added in only at the very end.
Gathering Payroll Information
Before any calculation begins, payroll confirms four categories of information for the employee and the pay period. Employee information includes the SIN and completed TD1 forms already collected when the employee was onboarded, which determine the personal tax credit claim code used for income tax withholding. Pay information includes the employee’s rate (hourly or salaried), pay frequency, and whether the current period includes anything irregular such as overtime, a bonus, or a vacation payout. Benefit and allowance information requires payroll to determine, for every non-wage item the employee receives, whether it is taxable or non-taxable – a benefit or allowance is generally taxable if its value primarily benefits the employee rather than the employer, and non-taxable if it is reasonable in amount and primarily serves a work purpose. Finally, payroll confirms whether any deductions beyond the standard statutory ones apply, such as union dues, a wage garnishment, or a voluntary benefit plan contribution.
Taxable vs. Non-Taxable Benefits and Allowances
Whether a benefit or allowance is taxable changes which earnings figures it flows into, so getting the classification right early prevents errors downstream. A benefit paid on a schedule different from the pay cycle – such as an employer-paid life insurance premium billed monthly – must be converted to a per-pay-period amount before it can be added to any period’s earnings; a monthly premium is annualized by multiplying by twelve, then divided by the number of pay periods in the year to find the amount attributable to a single pay period. An allowance’s taxability often depends on whether it follows a CRA-prescribed reasonable rate: a per-kilometre vehicle allowance that matches the CRA’s published reasonable rate is non-taxable, but a flat monthly car allowance not tied to actual kilometres driven is considered unreasonable and becomes fully taxable. A protective clothing or uniform allowance is typically non-taxable when the amount is reasonable and wearing the clothing is a genuine job requirement.
Pensionable and Insurable Earnings
Once gross earnings for the period are known, payroll builds two related but distinct earnings figures before calculating CPP and EI. Pensionable earnings equal gross earnings plus all taxable benefits and taxable allowances, and this figure – after the basic exemption is subtracted – is what CPP is calculated on. Insurable earnings equal gross earnings plus cash taxable benefits and cash taxable allowances only; non-cash taxable benefits, such as an employer-paid insurance premium the employee never physically receives as cash, are excluded from insurable earnings even though they are included in pensionable earnings. This is why a pay period’s CPP contribution and EI premium are frequently calculated on two slightly different earnings bases rather than the same number.
Income Tax and Total Deductions
Federal and provincial income tax is calculated on net taxable earnings, which start from gross taxable earnings (gross pay plus taxable benefits and allowances) and are then reduced by deductible items such as registered pension plan contributions and union dues made through payroll. In practice, income tax is calculated using payroll software or the CRA’s PDOC calculator rather than by hand, since the calculation depends on the employee’s TD1 claim amounts, province, and the current year’s tax brackets. Once income tax, CPP, and EI are known, they are added together as total source deductions, and any other mandatory or voluntary deductions – garnishments, union dues, pension contributions, benefit premiums – are added on top to produce total deductions for the period.
Worked Example: Salary Plus Commission
Consider Farah, a sales professional in Ontario earning an annual salary of $46,800 paid biweekly (26 pay periods), who earned $310 in commission this period. Her employer provides a flat $180-per-month car allowance not tied to CRA’s reasonable per-kilometre rate (making it taxable) and pays a $250-per-month life insurance premium on her behalf (also taxable, and non-cash). Farah contributes $4,000 per year to a registered pension plan and pays $18.40 per pay period for health and dental coverage. Her biweekly salary is $46,800 divided by 26, or $1,800.00, so gross earnings for the period are $1,800.00 plus $310.00 commission, or $2,110.00. Converting the monthly benefits to a biweekly basis gives $115.38 for life insurance ($250 times 12, divided by 26) and $83.08 for the car allowance ($180 times 12, divided by 26), both taxable, bringing pensionable earnings to $2,110.00 plus $115.38 plus $83.08, or $2,308.46. Applying the $134.62 biweekly CPP exemption ($3,500 divided by 26) and the 5.95 percent CPP rate gives a CPP contribution of ($2,308.46 minus $134.62) times 5.95 percent, or $129.35. Because the life insurance premium is non-cash, insurable earnings exclude it: $2,110.00 plus the $83.08 car allowance equals $2,193.08, and at a 1.66 percent EI rate that produces a $36.40 EI premium. Net taxable earnings subtract the $153.85 biweekly pension contribution ($4,000 divided by 26) from the $2,308.46 pensionable earnings figure, giving $2,154.61; applying an illustrative combined federal and provincial withholding rate of roughly 20 percent (a simplification of what the CRA’s PDOC tool would calculate precisely from her TD1 claims and tax brackets) produces an estimated income tax withholding of $430.92. Total deductions are $129.35 CPP plus $36.40 EI plus $430.92 income tax plus $153.85 pension plus $18.40 health and dental, or $768.92, leaving Farah with net pay of $2,308.46 minus $768.92, or $1,539.54.
Worked Example: Hourly Wage With Overtime and a Vacation Payout
Consider Marcus, a unionized warehouse worker in British Columbia earning $28.00 per hour and paid biweekly, who worked 72 regular hours and 8 overtime hours (at time and a half) this period. Under his collective agreement, his two weeks of accrued vacation (80 hours) must be paid out this period rather than carried forward, since he did not take the time off. His employer provides a non-taxable meal allowance of $12 per day for each of the 9 days he worked, and he pays $60 per month for health and dental coverage, plus $220 per year in union dues. Gross earnings combine regular wages, overtime, and the vacation payout: (72 hours times $28.00) plus (8 hours times $28.00 times 1.5) plus (80 hours times $28.00), which is $2,016.00 plus $336.00 plus $2,240.00, or $4,592.00. Because the meal allowance is non-taxable, it does not enter pensionable or insurable earnings, so both figures equal the $4,592.00 gross earnings. CPP is ($4,592.00 minus the $134.62 exemption) times 5.95 percent, or $265.21, and EI is $4,592.00 times 1.66 percent, or $76.23. Net taxable earnings subtract the $8.46 biweekly union dues ($220 divided by 26) from gross taxable earnings, giving $4,583.54, and applying the same illustrative 20 percent combined withholding rate produces an estimated income tax of $916.71. Health and dental cost $27.69 per pay period ($60 times 12, divided by 26). Total deductions are $265.21 plus $76.23 plus $916.71 plus $8.46 plus $27.69, or $1,294.30, and net pay before adding back the meal allowance is $4,592.00 minus $1,294.30, or $3,297.70. Finally, adding the non-taxable meal allowance of $12 times 9 days, or $108.00, brings Marcus’s net pay for the period to $3,405.70.
Quick Revision Summary
Net pay follows four steps: gather payroll information, determine gross earnings, calculate all deductions, and subtract deductions from gross earnings (adding back non-taxable amounts last). Taxable benefits and allowances are folded into pensionable earnings for CPP purposes; only cash taxable benefits and allowances are folded into insurable earnings for EI purposes, since non-cash benefits are excluded from the EI base. Income tax is calculated on net taxable earnings, which is gross taxable earnings reduced by deductible items such as pension contributions and union dues, using payroll software or the CRA’s PDOC calculator rather than a fixed percentage in practice. A biweekly monthly-billed benefit or deduction is converted using the pattern (monthly amount times 12) divided by the number of pay periods in the year. Total deductions combine the three source deductions – CPP, EI, and income tax – with any other mandatory or voluntary deductions, and non-taxable benefits or allowances are added back only after that subtraction, since they were never part of the deduction calculations to begin with.
Managers constantly choose between competing alternatives – which products to offer, whether to make a component in-house or buy it, whether to accept a one-time order at a discounted price. Differential decision making is the discipline of comparing only the costs and benefits that actually differ between those alternatives, and then choosing whichever alternative produces the better financial outcome. The key insight is that a cost or benefit that stays exactly the same no matter which alternative is chosen contributes nothing to the decision, so a manager who wants a clear answer has to strip those identical costs out of the analysis rather than let them clutter the comparison.
Relevant vs. Irrelevant Costs
A relevant cost or benefit is one that differs between the alternatives being compared; an irrelevant cost is one that stays the same regardless of which choice is made. Relevant costs are also called avoidable costs, because they can be avoided by choosing one alternative over another. Sunk costs – money already spent before the decision point – are always irrelevant, because no future choice can undo a cost that has already been incurred. Suppose a woodworking shop already owns a $6,000 lathe it bought two years ago; whether the shop decides to take on a new furniture line or not, that $6,000 was spent regardless, so it plays no role in the new decision. Fixed costs need particular care in this kind of analysis, because they split into traceable fixed costs (costs that belong to one specific segment and would disappear if that segment were eliminated – these are relevant) and common fixed costs (costs shared across segments that continue no matter what – these are irrelevant unless the decision specifically eliminates them).
Add or Drop a Segment – Worked Example
Suppose Riverside Bakery sells two product lines, sourdough loaves and rye loaves, and the rye line’s segmented income statement shows a $9,200 net loss for the quarter, prompting the owner to consider dropping it. On the surface it looks like dropping rye would add $9,200 to overall profit, but that conclusion ignores which of the rye line’s costs would actually disappear. Suppose the rye line’s $9,200 loss includes $42,000 of traceable variable costs and $31,000 of fixed overhead allocated based on sales dollars, of which only $6,500 is actually traceable to the rye ovens and staff scheduling and would be eliminated if rye were dropped – the remaining $24,500 is common building and equipment cost that would simply shift onto the sourdough line. If dropping rye also frees up oven capacity that lets the bakery sell an additional $18,000 of sourdough at a 45 percent contribution margin ratio, that adds $8,100 in extra contribution margin. Adding up only the relevant pieces – the lost contribution margin from rye sales, the $6,500 in avoided traceable fixed costs, and the $8,100 in additional sourdough contribution margin – produces the true financial effect of dropping the segment, which will typically look very different from simply eliminating the segment’s reported net loss.
Make or Buy (Outsourcing) – Worked Example
A make or buy decision compares the cost of producing a component or performing a function internally against the cost of purchasing it from an outside supplier, and it applies just as well to physical parts as to services such as payroll processing. Suppose a furniture maker currently buys metal drawer pulls from a supplier for $2.40 each and uses 9,000 pulls a year, and is considering making them in-house instead. Making them requires $1.10 per unit of raw metal stock and $0.35 per unit of electricity for the stamping press, both of which are new, relevant costs. The shop has an idle employee who could run the stamping press during existing paid hours at no additional payroll cost, so labor is irrelevant to the decision since it would be paid regardless. The relevant cost to make the pulls is $1.45 per unit ($1.10 material plus $0.35 electricity), which is $0.95 cheaper per unit than the $2.40 purchase price, producing a projected annual saving of $0.95 times 9,000 units, or $8,550, from making the pulls in-house – provided the shop’s existing overhead and equipment truly require no additional outlay.
Special Order Decisions – Worked Example
A special order is a one-time sale outside an organization’s normal sales channel, typically at a price below the regular selling price, and the decision to accept it hinges on whether the order price covers the relevant (avoidable) cost of producing it – not the full cost including fixed overhead that would be incurred anyway. Suppose a candle maker’s normal retail price is $9.00 per candle, with variable production cost of $3.20 per candle (wax, wicks, fragrance, and labor) and fixed overhead allocated at $1.80 per candle based on normal volume. A community fundraiser asks to buy 400 candles at a discounted $4.50 each, well below the $9.00 regular price. Because the candle maker has spare production capacity and the order will not displace any regular sales, the $1.80 of fixed overhead is irrelevant – it would be incurred regardless of whether the special order is accepted. Comparing only the relevant figures, the $4.50 special order price exceeds the $3.20 relevant variable cost by $1.30 per candle, so accepting the order adds $1.30 times 400 candles, or $520, to profit, even though the order price sits well below the regular selling price and below the candle’s fully allocated cost of $5.00.
Sell or Process Further (Joint Products)
When a single raw material is processed to the point where it splits into two or more distinct products – the split-off point – a manager must decide whether to sell each resulting product as is or process it further before selling it. Costs incurred up to the split-off point are joint costs, and because they have already been spent to get all of the products to that point regardless of what happens afterward, joint costs are always irrelevant to the sell-or-process-further decision; they behave exactly like sunk costs. Only the additional processing costs incurred after the split-off point, compared against the additional revenue that further processing generates, are relevant. Suppose a juice company presses oranges into juice and is left with 20,000 pounds of pulp as a by-product each month. The pulp can be sold as is to a livestock feed company for $0.35 per pound, or it can be dried and ground into a fiber powder that sells for $1.10 per pound, requiring $9,000 of additional drying and packaging cost and yielding one pound of powder for every four pounds of fresh pulp (5,000 pounds of powder from the 20,000 pounds of pulp). Selling the pulp as is generates 20,000 times $0.35, or $7,000. Processing it further generates 5,000 times $1.10, or $5,500, minus the $9,000 processing cost, for a net of $(3,500) – a $10,500 disadvantage compared to selling the pulp as is, so the juice company is financially better off selling the pulp unprocessed despite the higher per-pound price the powder commands.
Quick Revision Summary
Differential decision making compares only relevant costs and benefits – those that differ between alternatives – and ignores irrelevant costs, including all sunk costs, which cannot be changed by any future decision. In add-or-drop decisions, only traceable fixed costs that would actually be eliminated are relevant; common fixed costs that continue regardless are not. In make-or-buy decisions, only costs that would actually change (such as new materials or new equipment) are relevant, while costs the organization would incur either way (such as an already-idle employee’s existing salary) are not. In special order decisions, fixed overhead already covered by normal volume is typically irrelevant if the special order uses spare capacity, so the order should be accepted whenever its price exceeds the relevant variable cost per unit. In sell-or-process-further decisions, joint costs incurred before the split-off point are always irrelevant sunk costs; only the incremental revenue and incremental processing cost after the split-off point determine whether further processing pays off.
