Free Payroll Deadline Planning Template

The date that catches employers is a deposit date rather than a filing date. Under the US federal rules, whether you deposit monthly or semiweekly for a calendar year is fixed by a lookback period on past liability, so the schedule for the year ahead is decided before the year begins and can change on 1 January while nothing about the business has changed. Over the top of both schedules sits a rule that overrides them: accumulate $100,000 or more of tax liability on any single day, and that deposit is due on the next business day.

The shapes differ enough to matter. A monthly depositor covers a whole month of payments by the 15th of the following month. A semiweekly depositor works on two rolling windows: payments made Wednesday through Friday are due by the following Wednesday, and payments made Saturday through Tuesday by the following Friday. Now add a bonus run that pushes one day past $100,000 of liability. A monthly depositor whose fastest deadline has been the 15th is suddenly on a next business day clock, and the trigger was a payroll decision made in another department.

Filing dates are the easier half and still worth pinning: Form 941 by the last day of the month after the quarter ends, with 10 extra calendar days if every deposit was made on time, and Forms W-2 and 1099-NEC by 31 January. This planner stores only what you verify, records the source and the date you checked it, and infers no future occurrence from a frequency label. That is the right constraint. A calendar entry created from a rule someone read once is the specific artifact that keeps firing after the rule behind it has changed.