November rolls around, your S-corp had a better year than expected, and your salary is sitting at $30,000 while profits are at $120,000. The fix almost everyone reaches for is a December bonus: one big check, run through payroll, and the reasonable salary problem disappears. Here is the part that surprises owners: yes, it works. A bonus counts toward reasonable salary just like every paycheck did. The part that bites people is how they do it.
The IRS tests total compensation for the year, not how you sliced it. Bonuses paid through payroll and reported on your W-2 are wages. Several S-corp tax guides explicitly list year-end bonuses as a planning strategy: pay a conservative base salary while the year's outcome is uncertain, then true up in December once profitability is known. That is not a loophole. That is the stated logic CPAs recommend to clients.
Can a December S-corp bonus count toward reasonable salary? The rules
It counts when it is a real bonus. The distinction the IRS draws, spelled out in reasonable compensation guidance, is between compensation with a documented business basis and a payment shaped like a distribution. A $40,000 bonus tied to hitting revenue targets, approved in corporate minutes, with salary survey data showing the total lands in the market range, reads as compensation. A round $90,000 check on December 28 that equals the year's leftover profit reads as profit labeled bonus, and agents know the difference.
The documentation is not optional if you want the bonus to survive a challenge. Before the check goes out, put it in writing: a board resolution or memo dated December that states the bonus amount, the basis (annual performance, profitability, market comparables), and the total annual compensation. Keep that with your Forms 941, W-2, and the salary survey data. The burden of proof in compensation cases falls on the taxpayer; unprepared owners lose cases they could have won.
Now the trap. Do not let the bonus be your entire payroll. One well-known tax advisory warning: pay yourself only in December and the IRS reads the whole arrangement as profit-taking with a wage label. Advisors recommend running payroll at least quarterly, ideally monthly, with the bonus as the top-up. A base salary of $60,000 paid monthly plus a $30,000 December bonus looks like a compensation plan. $0 all year plus a $90,000 December check looks like tax avoidance. Same total. Completely different audit profile.
One more honest caveat. If your total compensation, bonus included, still sits far below what an unrelated employer would pay for your job, the bonus did not fix anything. The test is market-rate total pay, and December creativity does not move the number. That is where a lot of owners fool themselves: the bonus felt like action, but the math still failed. Run the comparables first, then set the bonus.
My own stance, since this is the part where I get to have one: the year-end bonus is the best tool in the S-corp compensation kit, and it is also the most abused. Use it to manage uncertainty, not to minimize payroll. The owners who sleep well at audit time are the ones who could explain every dollar on the W-2 with a straight face, not the ones with the lowest total.
Frequently asked questions
Does an S-corp year-end bonus count toward reasonable salary?
Yes. Wages are wages regardless of timing, and a December bonus run through payroll with proper documentation counts toward the annual reasonable compensation test.
Is it okay to pay myself only once a year in December?
It is legal but it looks bad. Consistent quarterly or monthly payroll with a year-end bonus on top is the pattern tax advisors recommend, because a single December check reads as profit-taking.
What documentation does a year-end bonus need?
A dated board resolution or memo stating the amount, the business basis, and how the total compares to market data. File it with your payroll records and salary comparables.
Can a December bonus be too large?
For an S-corp, the danger is underpaying, not overpaying. But keep the total within the market range for your role; oversized bonuses in C-corps have been reclassified as disguised dividends, and absurd numbers invite scrutiny everywhere.
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