The "3-day rule" is the standard semi-weekly timing — three banking days between payday and deposit. The $100,000 next-day rule overrides it the moment a single payday gets large enough. Both catch growing businesses, often in the same year.
Semi-weekly depositors have roughly three banking days between each payday and the deposit deadline. The IRS expresses this as a payday-to-Wednesday or payday-to-Friday rule, but the underlying window is three banking days.
This rule applies regardless of the size of the payroll, as long as you are on the semi-weekly schedule. The size of the payroll is what brings in the second, more aggressive rule below.
Any single payday that triggers $100,000 or more in federal employment tax liability is due by the next business day. No exceptions for the semi-weekly schedule. No exceptions for the monthly schedule. The trigger overrides everything else.
The $100,000 figure refers to the accumulated tax liability for that single payday — the employee withholding plus the employer share of FICA. A payroll large enough to generate that figure typically grosses out at roughly $1 million in wages, but bonus runs, stock vesting, and severance can hit the threshold on much smaller wage totals.
Most $100,000 paydays come from compensation that stacks onto a regular payroll, not the regular payroll itself.
A December bonus payroll combined with regular wages can easily push past the threshold for a 30-person company. The deposit is due the very next business day, often in the holiday week.
RSU vesting events trigger withholding on the fair market value at vesting. A single vesting date for a small team can produce $100,000 in employment tax liability even when no cash changes hands.
A reduction in force or executive separation can land six-figure payouts on a single date. The deposit obligation moves to next-day regardless of how often you typically run payroll.
The trigger does not just affect the deposit on that one payday. It shifts your deposit cadence forward for two calendar years.
| Status before | Trigger | Status after |
|---|---|---|
| Monthly depositor | Single payday ≥ $100,000 | Semi-weekly for the rest of the current year + all of next year |
| Semi-weekly depositor | Single payday ≥ $100,000 | Remains semi-weekly. That specific deposit is due next business day, not on the normal Wed/Fri. |
The failure-to-deposit penalty runs on the size of the deposit. A $100,000 deposit one day late is already a $2,000 penalty under the 2% tier. Sixteen days late and the same deposit carries a $10,000 penalty. The exact penalty schedule is on the missed deposit penalty page.
Worse, the next-day deadline is often a surprise — most employers do not expect to deposit on a Tuesday morning after a Monday bonus run. A reminder set for the next business day after any large payroll closes that surprise gap.
If you can see a large payday coming — a bonus cycle, a vesting date, a severance event — set the deposit reminder before the payday lands. A payroll tax deposit reminder gives you advance notice and a same-day prompt, so the next-business-day deposit does not get lost in the chaos of the pay run itself.
See also: how to know which deposit schedule normally applies to you and the regular deposit due dates that the $100K rule overrides.
Set a reminder ahead of your next large payday. The next-day deadline will not catch you off guard.
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The 3-day rule is the standard semi-weekly deposit timing: a semi-weekly depositor generally has three banking days after each payday to deposit federal employment taxes. Paydays Wednesday–Friday deposit by the following Wednesday. Paydays Saturday–Tuesday deposit by the following Friday. The phrase is often used interchangeably with the semi-weekly schedule itself.
No. The 3-day rule is the normal semi-weekly timing window. The $100,000 rule overrides it — any single payday that triggers $100,000 or more in tax liability must be deposited by the next business day, regardless of which schedule you are normally on.
Any single payday with accumulated federal employment tax liability of $100,000 or more. Common triggers include large bonus runs, year-end payouts, equity vesting events, severance, and stacking a normal payroll with a separate bonus run on the same day.
Yes. The rule overrides any deposit schedule. A monthly depositor who hits $100,000 on a single payday must deposit by the next business day for that payroll. The trigger also moves the employer to semi-weekly status for the remainder of the current calendar year and all of the next calendar year.
Once any single payday triggers $100,000 in liability, the IRS moves you to semi-weekly status for the rest of the current calendar year and the entire next calendar year. You return to evaluation under the normal $50,000 lookback threshold the year after that.
By the close of the next banking day. For most employers using EFTPS, that means submitting the payment by 8 PM Eastern the next business day after the payday that triggered the threshold. Weekends and federal holidays do not count as banking days for this purpose.
Watch year-end bonus cycles, equity vesting calendars, and any pay event that stacks multiple types of compensation on the same date. If you suspect a payroll will trigger the threshold, run the calculation before the pay date and set a reminder for the next business day so the deposit does not slip.
Free reminder email. Set it before a large payday and the deposit obligation lands in your inbox the morning it's due.
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