An accrual-basis business can take a bonus accrual tax deduction in the year the bonus was earned if two things are true at year-end: the liability to pay is legally fixed, and the cash goes out within two and a half months after the tax year closes. For a calendar-year company, that payment deadline is March 15. Miss it and the deduction slides into the year of payment. For bonuses going to owners or other related parties, the 2.5-month cushion does not exist at all.
Fixing the Liability Before Year-End
Timing only matters once the bonus clears the “all events test” in the Treasury regulations. Two prongs have to be satisfied by December 31 (or the last day of your fiscal year).
First, the fact of the liability has to be established. In practice, that means someone with authority (usually the board or a compensation committee) has formally approved either the specific bonus amounts or a definite formula for calculating them before the year closed. A general plan to reward people in the first quarter is not a fixed liability. Neither is a discretionary plan where management keeps the right to cancel or cut the payout. Any retained discretion to not pay keeps the liability from fixing until that discretion is gone.
Second, the amount has to be determinable with reasonable accuracy. You don’t need a final dollar figure for every employee by December 31, but the method of calculation has to be locked in. A formula tied to fourth-quarter net revenue or annual sales targets works because the inputs are objective. A promise of “generous bonuses” does not.
Economic performance sits on top of these two prongs. The tax code treats the all events test as unmet until economic performance occurs,1Office of the Law Revision Counsel. 26 USC 461 – General Rule for Taxable Year of Deduction and for employee compensation the economic performance rules route you through Section 404.2eCFR. 26 CFR 1.461-4 – Economic Performance That is where the payment deadline becomes decisive.
The 2.5-Month Payment Window
Section 404 generally limits the employer’s deduction for compensation to the year the amount is includible in the employee’s gross income.3Office of the Law Revision Counsel. 26 US Code 404 – Deduction for Contributions of an Employer to an Employees Trust or Annuity Plan and Compensation Under a Deferred-Payment Plan A bonus accrued in December and paid in February would normally be deductible in the February year. The Treasury regulations carve out an exception: compensation received within two and a half months after the employer’s tax year ends is presumed not to be deferred compensation.4eCFR. 26 CFR 1.404(b)-1T – Method or Arrangement of Contributions Having the Effect of a Plan Because it is not deferred, Section 404 does not override the normal accrual rules, and the deduction stays in the year earned.
For a calendar-year corporation, that window closes on March 15 of the following year.5Internal Revenue Service. Rev. Rul. 2007-12 A fiscal-year business counts two and a half months from its own year-end. A June 30 fiscal year-end means payment by September 15.
The deadline is unforgiving. A $10,000 bonus accrued on December 31 and paid on March 10 gives the company a Year 1 deduction. The same bonus paid on March 20 shifts the entire deduction into Year 2. A few days of delay create a mismatch between the books (expense in Year 1) and the return (deduction in Year 2) that is manageable but adds work.
This whole regime applies only to bonuses going to employees who are not related parties. The moment a company owner or a family member with the wrong ownership stake is on the receiving end, a different rule takes over.
When the Bonus Goes to an Owner or Shareholder
The tax code’s matching principle blocks a company from deducting an expense in one year while a related-party recipient waits until the next year to report the income. Under Section 267, the deduction is not allowed until the day the amount is includible in the related payee’s gross income.6Office of the Law Revision Counsel. 26 USC 267 – Losses, Expenses, and Interest With Respect to Transactions Between Related Persons The 2.5-month window simply does not apply to these payments.
Who Counts as a Related Party
The definition depends on the entity type, and the S corporation rule catches people who assume they are safely under some ownership threshold.
- C corporations: an individual who owns more than 50% of the stock by value, directly or through constructive ownership rules that attribute shares held by family and related entities.6Office of the Law Revision Counsel. 26 USC 267 – Losses, Expenses, and Interest With Respect to Transactions Between Related Persons
- S corporations: any person who directly or indirectly owns any stock at all. A 5% shareholder is a related party on exactly the same footing as a 95% shareholder.7Internal Revenue Service. An S Corporation Cannot Deduct Accrued Expenses for Related Parties
- Family members: spouses, siblings, ancestors, and lineal descendants of a qualifying owner. Their stock is attributed to the owner for the C corporation 50% threshold.6Office of the Law Revision Counsel. 26 USC 267 – Losses, Expenses, and Interest With Respect to Transactions Between Related Persons
The S corporation rule is the one that trips most owners. A minority shareholder-employee of an S corporation cannot be treated as an ordinary employee for accrual purposes. The company cannot deduct any accrued compensation to that shareholder until the year the shareholder actually receives and reports the income.7Internal Revenue Service. An S Corporation Cannot Deduct Accrued Expenses for Related Parties
How It Plays Out
Picture a calendar-year S corporation that accrues a $50,000 bonus to its owner-employee on December 31, Year 1, and pays it on February 15, Year 2. The owner reports the $50,000 on their Year 2 personal return because that is when the cash arrived. The S corporation’s deduction has to match: Year 2, not Year 1. February 15 sits comfortably inside the 2.5-month window, but the window is irrelevant to this payment.
Had the company cut the check on December 30, Year 1, both the deduction and the income inclusion would land in Year 1. That is the practical path to a same-year deduction for a related-party bonus: pay the money before year-end.
Constructive receipt is sometimes floated as a workaround. Treasury regulations treat income as constructively received when it is credited to the taxpayer’s account or made available without substantial limits.8eCFR. 26 CFR 1.451-2 – Constructive Receipt of Income For an owner-employee, being authorized to sign company checks is not enough on its own. The IRS routinely challenges constructive receipt arguments without clear documentation that the funds were segregated and available before year-end, which is why most advisors recommend writing the check by December 31 rather than relying on the theory.
Bonus Pools and Employees Who Leave
A common wrinkle: the company approves a total bonus pool by year-end but does not finalize individual allocations until weeks later, and some employees leave before the payment date. The IRS has addressed this. A bonus pool remains deductible in the accrual year even if the employer does not yet know which specific employees will receive payouts, as long as the total minimum amount payable to the group is fixed by year-end.9Internal Revenue Service. Rev. Rul. 2011-29
The mechanism matters. If the plan reallocates a departing employee’s share among the remaining eligible employees rather than returning it to the company, the aggregate pool stays fixed regardless of turnover, and the first prong of the all events test holds.9Internal Revenue Service. Rev. Rul. 2011-29
An individual bonus conditioned on the employee still being on the payroll at the payment date is a different animal. If the employee quits and the company keeps the money, the liability was never truly fixed at year-end. The payment itself established the liability, and the deduction belongs in the payment year.
Documentation the IRS Expects
The service looks for specific evidence that the liability was fixed before year-end. Two approaches do the job:
- A formula fixed before year-end. The pool is calculated from financial data reflecting results as of the close of the taxable year, and the formula is in place before December 31, not written up retroactively in January.9Internal Revenue Service. Rev. Rul. 2011-29
- A binding corporate action. A board or compensation committee resolution specifying the bonus amounts or pool before year-end, documented in minutes with a date that will withstand scrutiny.
Employers should also communicate the general terms of the program to eligible employees when they become eligible and whenever the plan changes.9Internal Revenue Service. Rev. Rul. 2011-29 An employee’s ignorance of the bonus does not by itself kill the deduction, but the communication supports the position that the employer treated the obligation as binding rather than discretionary.
Discretionary plans are the most dangerous for timing. If the employer keeps the right to reduce or cancel after year-end, the liability has not fixed, and the deduction lands in the payment year regardless of how quickly the cash goes out. This is where closely held businesses most often slip: everyone knows bonuses are coming, but no formula or resolution is adopted before the year closes.
Quick Reference by Scenario
- Unrelated employee, paid by March 15: deduct in the year the bonus was earned (Year 1).
- Unrelated employee, paid after March 15: deduct in the year of payment (Year 2).
- C corporation owner above 50%, paid by December 31: deduct in Year 1.
- C corporation owner above 50%, paid after December 31: deduct in the year the owner reports the income.
- Any S corporation shareholder, paid by December 31: deduct in Year 1.
- Any S corporation shareholder, paid after December 31: deduct in the year the shareholder reports the income.
The pattern for related parties is simple: pay before the tax year closes or take the deduction the following year. Careful accrual mechanics will not change the result.