Here’s a mistake that catches careful business owners, not careless ones. They know payroll taxes are due “quarterly,” they file their Form 941 right on time, and they still get a penalty notice. Why? Because they confused filing the return with depositing the money, and the money was due on a completely different, much more frequent schedule.
Payroll taxes run on two separate clocks. Once you see them as two things, the whole calendar makes sense.
The short answer
Depositing payroll taxes and filing payroll tax returns are two different deadlines. You deposit the tax money on a monthly or semiweekly schedule set by your history, and you file the returns less often: Form 941 quarterly, Form 940 once a year. You deposit many times between filings, so hitting the filing date does nothing to keep your deposits on time.
Clock 1: depositing (paying the money)
This is the one that trips people up, because it happens far more often than “quarterly.”
First, find your schedule. The IRS puts you on one of two deposit schedules based on a lookback period, which is the four quarters ending June 30 of the prior year. (For deposits during 2026, that lookback ran July 1, 2024 through June 30, 2025.)
| Your Form 941 taxes in the lookback period | Your deposit schedule |
|---|---|
| $50,000 or less | Monthly depositor |
| More than $50,000 | Semiweekly depositor |
New employers default to monthly. Note that “semiweekly” refers to when deposits are due, not how often you run payroll.
If you’re monthly: deposit the taxes for a given month by the 15th of the following month. Simple.
If you’re semiweekly: the due date depends on your payday.
| Payday falls on | Deposit is due by |
|---|---|
| Wednesday, Thursday, or Friday | The following Wednesday |
| Saturday, Sunday, Monday, or Tuesday | The following Friday |
The rule that overrides both: if you ever accumulate $100,000 or more in payroll tax liability on any single day, that amount is due the next business day, whatever your normal schedule. A single big payroll can trigger it, and it also bumps you to semiweekly for the rest of that year and the next.
Miss a deposit and the penalty climbs the longer it sits, which is the whole story in what happens if payroll taxes are paid late.
Clock 2: filing (reporting what you paid)
Filing is the paperwork that reports the wages and taxes. It’s much less frequent.
| Return | What it covers | Due |
|---|---|---|
| Form 941 | Federal income tax, Social Security, Medicare (quarterly) | Apr 30, Jul 31, Oct 31, Jan 31 |
| Form 940 | Federal unemployment tax, FUTA (annual) | Jan 31 |
| W-2s | Each employee’s annual wages, to employees and the SSA | Jan 31 |
Two useful details. If you deposited everything on time for a quarter, you generally get about 10 extra days to file that quarter’s 941. And when the 31st lands on a weekend or holiday, the deadline rolls to the next business day (for the January 2027 filings, that pushes to February 1, 2027).
There’s also a small FUTA wrinkle: you deposit federal unemployment tax quarterly only once your accumulated FUTA liability passes $500. Below that, it rolls forward. The employer payroll taxes lesson covers what FUTA is and why it’s usually just 0.6%.
Why this is worth getting straight
The businesses that get penalized here are rarely ignoring their taxes. They’re filing on time and assuming that covers them, while deposits quietly go late in between. Once you hold the two clocks separately, know your deposit schedule, mark your filing dates, the calendar stops being a trap.
If you’re not sure which deposit schedule you’re on or when your next deposit is actually due, that’s exactly the kind of thing worth nailing down before it costs you. See how it fits the full cycle in how to run payroll step by step, or book a free intro call and we’ll map your deadlines to your payday.
This is general education, not tax advice for your specific situation. Deposit thresholds, lookback dates, and filing deadlines can change, so confirm the current dates for your business before you rely on them.
Frequently asked
What's the difference between depositing and filing payroll taxes?
Depositing is sending the tax money to the IRS, and it happens on a monthly or semiweekly schedule based on your history. Filing is submitting the return that reports it, which is quarterly for Form 941 and annual for Form 940. You deposit often and file a few times a year, so the two deadlines almost never line up.
How do I know if I'm a monthly or semiweekly depositor?
Look at your total Form 941 taxes during the lookback period, the four quarters ending June 30 of the prior year. If that total was $50,000 or less, you're a monthly depositor. If it was more than $50,000, you're semiweekly. New employers start as monthly depositors by default.
When is Form 941 due?
Form 941 is due the last day of the month after each quarter ends: April 30, July 31, October 31, and January 31. If you deposited all your taxes on time for the quarter, you generally get about 10 extra days to file. Form 940, the annual federal unemployment return, is due by January 31.