Monthly vs semiweekly: payroll deposit schedules

The $50,000 threshold and how the schedule is assigned

The IRS typically mails Notice CP136 in mid-November telling an employer which schedule applies to the upcoming calendar year, based on the lookback-period liability described above. That notice is informational, not the determining event — the schedule is set by the lookback-period math itself, and an employer is expected to be able to compute it independently rather than wait on the notice arriving. If total Form 941 liability during the lookback period was $50,000 or less, the employer is a monthly schedule depositor for the entire following calendar year. If liability exceeded $50,000, the employer is a semiweekly schedule depositor for the entire following calendar year.

A new business with no lookback period — because it did not exist, or had no employees, during the relevant window — is treated as having $0 in liability and defaults to the monthly schedule for its first calendar year of operation (subject to the same $100,000 next-day rule if a single large payroll run pushes it over that threshold).

The schedule is an annual determination made once, before the calendar year begins, and it does not change mid-year based on how the current year is actually trending — with the single exception described below.

• $50,000 or less in lookback-period liability → monthly depositor for the full following year
• More than $50,000 in lookback-period liability → semiweekly depositor for the full following year
• No lookback period (new employer) → monthly depositor by default
• The determination is made once per year and does not reset mid-year except for the next-day rule

Semiweekly deposits

A semiweekly schedule depositor's due date depends on which days of the week wages were paid, not on the calendar month. Taxes on wages paid Wednesday, Thursday, or Friday are due the following Wednesday. Taxes on wages paid Saturday, Sunday, Monday, or Tuesday are due the following Friday.

Because the due date tracks paydays rather than months, a semiweekly depositor with more than one payroll run in a short window can have multiple deposit obligations within the same week, each tied to its own payday grouping. Semiweekly depositors must also complete Schedule B (Form 941), a day-by-day liability record submitted with the quarterly return — this is the record the IRS uses to verify each deposit was both timely and for the correct amount, independent of whether the quarterly Form 941 balance itself was paid in full.

A three-business-day rule extends the Wednesday or Friday due date when a semiweekly depositor accumulates liability on a day that falls within, or is immediately followed by, three or more business days including a federal holiday — the practical effect is that the deposit deadline shifts to preserve at least three business days between the liability date and the deposit date.

Why the schedule matters more than the Form 941 due date

Form 941 is filed quarterly and reports what was owed and what was deposited — it is a reconciliation, not the payment mechanism itself. The failure-to-deposit penalty is assessed against late or short deposits made against the wrong schedule, and it applies whether or not the quarterly Form 941 was filed on time and whether or not the full balance was eventually paid. An employer can file a perfectly accurate, on-time Form 941 and still owe a substantial penalty because individual deposits during the quarter missed their monthly or semiweekly due dates.

The penalty scales with how late a deposit is (a graduated rate structure based on days late) and applies per deposit, which is why getting the schedule determination right before the calendar year starts — and re-checking it after any quarter with unusually large payroll — matters more than any single quarterly filing deadline.

All federal tax deposits, regardless of schedule, must be made electronically. The Electronic Federal Tax Payment System (EFTPS) is the standard method; the IRS also accepts payment through IRS Direct Pay or a business tax account for eligible deposits. A deposit must be scheduled by 8 p.m. Eastern time the business day before it is due to post as on time — same-day manual submission after that cutoff does not count for that due date. A business without existing IRS deposit access is not authorized to file, sign, or submit these deposits on a client's behalf; that access and each deposit remains the taxpayer's (or its authorized payroll provider's) responsibility.