Accrue the Bonus, Pay It Within 179 Days: The Owner-Manager Year-End Timing Rule (2026)

Reviewed by Bader A. Chowdry, CPA, CA, LPA on September 18, 2026

Most owner-managers know they can declare a bonus before year end and deduct it in that year even though the cash leaves later. Far fewer know the deadline attached to that privilege, and almost nobody counts it correctly, because the count starts at the corporation’s year end rather than at December 31.

This article is about execution. For the question of whether you should be taking salary, a bonus, dividends or some mix at all, read our salary vs. dividends guide for Ontario owner-managers in 2026; for the wider year-end picture, start at our capital gains tax guide for Canadian small business. What follows assumes you have decided to pay a bonus and want to know how to make the accrual stick.

What is the 179-day bonus rule, exactly?

There is no provision of the Income Tax Act called “the 179-day rule”. It is practitioner shorthand for subsection 78(4), which provides that where remuneration is still unpaid on the day that is 180 days after the end of the taxation year in which the expense was incurred, the amount is deemed incurred instead in the year it is paid. Pay by day 179 and the deduction stays put.

The operative words are worth reading in full, because the drafting is what makes the rule survivable. Section 78(4) of the Act applies to an expense that is “a superannuation or pension benefit, a retiring allowance, salary, wages or other remuneration … in respect of an office or employment” and, where the test is failed, says the amount “shall be deemed not to have been incurred as an expense in the year and shall be deemed to be incurred as an expense in the taxation year in which the amount is paid.” You can read the provision at Justice Laws; the consolidation we relied on states the Act is current to July 21, 2026.

This is a deferral, not a denial — and that distinction is the single most commonly mangled point about the rule. The corporation does not forfeit the deduction. It gets it in the year the bonus is actually paid. What it loses is threefold, and only the first is obvious:

1. Cash flow. Tax is paid a year earlier than it needed to be, and the corporation’s instalment base for the following year is set off the higher income.
2. Time value. A dollar of deduction next year is worth less than a dollar of deduction this year.
3. Rate risk — the one that actually costs money. The deduction is worth whatever it shelters in the year it lands. If the accrual year had income above the small business limit taxed at the general rate, and the payment year does not, the same deduction is worth materially less. The worked example below quantifies that.

Two structural points round out the provision. Subsection 78(5) states plainly that subsection 78(1) — the general rule that pulls unpaid non-arm’s-length amounts into income at the end of the second following taxation year — “does not apply in any case where subsection (4) applies.” Remuneration travels the 78(4) path and only that path. And s.78(4) carves two things out of its own reach by its own words: reasonable vacation or holiday pay, and a deferred amount under a salary deferral arrangement. Neither is caught by the 180-day test.

How do I count the 179 days from my year end?

Count from the corporation’s taxation year end — not from December 31, and not from the personal tax year. Day one is the day after year end. The statute tests day 180, so the last safe payment date is day 179. For a December 31, 2026 year end that is Monday, June 28, 2027. For an August 31, 2026 year end it is Friday, February 26, 2027. Readers with a non-calendar year end miscount this constantly.

Corporation year end	Day 1	Day 179 — last safe payment	Day 180 — the s.78(4) test date
December 31, 2026	Friday, January 1, 2027	Monday, June 28, 2027	Tuesday, June 29, 2027
August 31, 2026	Tuesday, September 1, 2026	Friday, February 26, 2027	Saturday, February 27, 2027
October 31, 2026	Sunday, November 1, 2026	Wednesday, April 28, 2027	Thursday, April 29, 2027
March 31, 2027	Thursday, April 1, 2027	Sunday, September 26, 2027	Monday, September 27, 2027

The last row is in the table on purpose. Where day 179 falls on a weekend or a banking holiday, the payment has to clear earlier, not later. Section 78(4) contains no weekend extension, and the general deadline-extension machinery that rescues a filing due on a holiday does not reach a statutory test of whether an amount was unpaid on a given day. A March 31, 2027 year end should be treating Friday, September 24, 2027 as its operational deadline, not the Sunday.

Three further points on what “paid” means, all of which come up in practice more often than the date does:

• Declared is not paid. A directors’ resolution declaring a bonus, minutes recording it, and an accrual entry in the accounts are all evidence of the obligation. None of them is payment. The test in s.78(4) is whether the amount is unpaid on day 180.
• A shareholder-loan credit is only payment if it genuinely settles the obligation. Crediting the bonus to a shareholder’s loan account can constitute payment where the credit is unconditional and the shareholder can draw on it. A bookkeeping entry that merely reclassifies the liability is not payment, and CRA looks at whether the amount was actually available to the employee.
• Source deductions have to be remitted. Payment of remuneration triggers withholding under section 153 of the Act and a remittance obligation on the statutory due date. Treating the bonus as paid for deduction purposes while never remitting the associated income tax, CPP and EI is the fastest way to turn a timing question into a payroll assessment. CRA sets out the remittance mechanics on its remitting payroll deductions page, and you can model the withholding on a specific bonus using CRA’s Payroll Deductions Online Calculator.

What does the bonus actually cost once payroll is in the picture?

The corporate deduction is only half of the calculation. The bonus is employment income to the recipient in the calendar year it is paid, it carries source deductions under s.153, and it creates a CPP obligation the corporation matches. Against that, it generates RRSP room. Netting those against the corporate tax saved is what decides whether the bonus beats leaving the income in the corporation — and the answer is genuinely fact-specific.

The T4 follows the calendar year of payment, not the fiscal year of deduction. This is where non-December year ends generate confusion that looks like an error and is not. An August 31, 2026 year end that accrues a bonus and pays it in February 2027 takes the deduction in its fiscal 2026 and issues the T4 for calendar 2027. The corporation’s books and the employee’s tax return are describing the same payment in two different years, correctly.

CPP is assessed on the calendar year of payment, at that year’s ceilings. For 2026 the year’s maximum pensionable earnings is $74,600, the second-tier ceiling (YAMPE) is $85,000, and the maximum employee contribution is $4,230.45, matched by the employer. The practical planning point is the one most summaries omit: if the owner is already at the annual maximum from regular salary, the marginal CPP cost of the bonus is nil, which can flip the analysis. If the owner is not, the bonus carries roughly a 5.95% employee contribution and the same again from the corporation, up to the ceiling. And note carefully — a bonus paid in the first half of 2027 is tested against 2027’s ceilings, not 2026’s, because CPP follows the calendar year in which the remuneration is paid.

RRSP room is the structural argument for keeping some remuneration as salary. Contribution room accrues at 18% of the prior year’s earned income to an annual dollar limit, which for 2026 is $33,810. Salary and bonuses are earned income; dividends are not and generate no room at all. CRA explains the mechanics on its contributing to an RRSP page. An owner-manager paid entirely in dividends will, over a career, have no registered room to speak of — which is a decision, not an oversight, but it should be a deliberate one.

Should I bonus down to the small business limit in 2026?

The classic move is to pay a bonus large enough to bring active business income down to the $500,000 small business limit, so nothing is taxed at the general rate. Ontario’s net small business rate fell from 3.2% before July 1, 2026 to 2.2% after June 30, 2026, widening that gap — but the rate is day-prorated, so a straddling year end blends.

The rate arithmetic, with dates attached. The federal small business rate is 9% and the federal general rate is 15%; CRA states both, along with the $500,000 business limit, on its corporation tax rates page. Ontario’s general rate is 11.5%. So the combined rate on active business income within the limit is 12.2% for days before July 1, 2026 and 11.2% for days after June 30, 2026, against a combined general rate of 26.5%.

The proration mechanic, which most published summaries get wrong. Taxation Act, 2007 s.31 does not set Ontario’s net small business rate at all. It sets the small business deduction rate, which is subtracted from the 11.5% general rate, and it applies each component by the ratio of days in the taxation year falling in each window: 8.3% for days after December 31, 2019 and before July 1, 2026 under s.31(4)(e), and 9.3% for days after June 30, 2026 under s.31(4)(f), as amended by S.O. 2026, c. 2, Sched. 15, s. 2. For a December 31, 2026 year end that is 181 days at 8.3% and 184 days at 9.3%, a blended deduction rate of 8.80%, and therefore a blended net Ontario rate of about 2.70% — neither 3.2% nor 2.2%. Combined with the federal 9%, that year’s rate within the limit is roughly 11.70%. An August 31, 2026 year end, with only 62 of its 365 days after June 30, blends to about 3.03%. The statute is at Ontario e-Laws, currency date September 14, 2026.

The $500,000 limit is not yours alone. It is shared across an associated group, and it is ground down on taxable capital under s.125(5.1). A corporation that assumes it has a full limit, and bonuses down to $500,000 on that assumption, can find the limit was $310,000 and the bonus was sized for the wrong target.

And the honest caveat: bonusing down is not automatic, and it is not free. Paying a bonus converts corporate income into personal employment income taxed at the owner’s marginal rate, which in Ontario is far above any of the corporate rates above. Where the corporation will retain the funds to finance growth, working capital or debt repayment, paying tax at the small business rate and deferring the personal tax is usually the better answer even though it looks like the more expensive one on the corporate return alone. Where the owner needs the cash personally, wants the RRSP room, or the income would otherwise sit above the limit at the general rate with no offsetting plan, the bonus makes more sense. The point of this section is that the timing rule applies either way — whatever you decide, the 179-day count governs when the deduction lands.

Case study: the $140,000 bonus that lost $21,420 by clearing two days late

Illustrative only. Figures are constructed to show the mechanics and are not a projection for any real corporation.

The facts. A Mississauga CCPC with a December 31, 2026 year end has $640,000 of active business income and a full, unshared $500,000 business limit. On December 20, 2026 the directors declare a $140,000 bonus to the owner-manager, bringing active business income to the limit. The accrual is recorded in fiscal 2026.

Done properly. The bonus is paid on or before Monday, June 28, 2027 — day 179. The deduction stays in fiscal 2026. The corporation’s Ontario rate for that straddling year is the blended 2.70% computed above, so its rate within the limit is about 11.70%, and the $140,000 that would otherwise have sat above the limit at 26.5% is deducted instead. Withholding is remitted on payment, the T4 is issued for calendar 2027, and the bonus generates RRSP room for 2028 at 18% of 2027 earned income, capped at that year’s dollar limit.

Done two days late. The bonus clears on June 30, 2027 — day 181. Section 78(4) applies. The expense is deemed not incurred in fiscal 2026 and deemed incurred in fiscal 2027. Nothing about the employee side changes at all: same withholding, same 2027 T4, same RRSP room. What changes is where the deduction lands and what it is worth there.

• In fiscal 2026 the deduction would have sheltered $140,000 of general-rate income at 26.5% — worth $37,100.
• Instead the corporation reports the full $640,000 for fiscal 2026 and pays that $37,100.
• In fiscal 2027 the deduction arrives. If that year’s income sits at or below the limit after the deduction, it shelters income taxed at the full-year combined 11.2% — worth $15,680.

The cost of two days is the $21,420 spread, plus a year of time value on the $37,100 and a higher instalment base for fiscal 2027. The deduction was never lost. It was simply spent in a cheaper year. That is what “deferral, not denial” means in dollars, and it is why the day-179 date belongs in the corporation’s calendar rather than in the accountant’s memory.

The five-step year-end sequence

1. Fix the corporation’s year end in writing before anything else, and compute day 179 from it. Not from December 31.
2. Size the bonus against the real business limit — after association and after the taxable-capital grind — not against a notional $500,000.
3. Decide bonus versus retention on the owner’s marginal rate and cash needs, not on the corporate rate alone.
4. Diarise day 179 with a buffer. If it lands on a weekend or holiday, move the operational date earlier. Bank timing is your problem, not the statute’s.
5. Pay, withhold and remit on the same event. Payment without remittance converts a clean timing plan into a payroll exposure.

Frequently Asked Questions

Q1. Is it a 179-day rule or a 180-day rule?

The statute is a 180-day test: subsection 78(4) asks whether the remuneration is unpaid on the day that is 180 days after the end of the taxation year. Day 179 is therefore the last date on which payment can be made and still have the amount paid before the test date. The rule is written as 180 and executed as 179.

Q2. Does subsection 78(4) mean the corporation loses the deduction?

No. It defers it. The subsection deems the expense not to have been incurred in the accrual year and deems it incurred in the taxation year in which the amount is paid, so the deduction is available in the payment year. The cost is cash flow, time value, and the risk that the deduction shelters income taxed at a lower rate in the later year.

Q3. Does declaring the bonus before year end count as paying it?

No. A resolution, minutes and an accrual entry establish the obligation but are not payment. The test in s.78(4) is whether the amount is unpaid on day 180. A credit to a shareholder-loan account can be payment where it unconditionally settles the obligation and the amount is available to the employee, but a bare reclassification of the liability is not.

Q4. What happens if day 179 falls on a weekend or a public holiday?

Pay earlier. Subsection 78(4) provides no weekend or holiday extension — it simply asks whether the amount was unpaid on day 180. The prudent approach is to treat the last business day before day 179 as the deadline and to confirm the payment has actually cleared.

Q5. Does the 180-day rule apply to dividends?

No. Subsection 78(4) applies to superannuation or pension benefits, retiring allowances, salary, wages and other remuneration in respect of an office or employment. A dividend is a distribution of after-tax corporate profit, not remuneration, and it is not deductible by the corporation at all — so there is no deduction for the timing rule to move.

Q6. Is reasonable vacation pay caught by the rule?

No. Subsection 78(4) expressly excludes reasonable vacation or holiday pay, and also excludes a deferred amount under a salary deferral arrangement. Both fall outside the 180-day test by the provision’s own wording.