IRS Form 941 Deposit Rules: Schedules, Thresholds, and Penalties

Under the Form 941 deposit rules, employers who withhold federal income tax, Social Security, and Medicare from wages must send those amounts to the IRS electronically on either a monthly or semi-weekly schedule, with the schedule set once a year based on a 12-month lookback at your reported liability. Two dollar thresholds can override that schedule in either direction, and missing a deadline triggers a penalty that climbs the longer the money sits unpaid.

How the IRS Sets Your Deposit Schedule

Your schedule for a calendar year is decided before the year begins, using a lookback period that runs July 1 through June 30 of the prior year. For 2026, the IRS looks at the total liability you reported on your Forms 941 from July 1, 2024, through June 30, 2025.¹

Add up that liability and you land in one of two buckets. If the total was $50,000 or less, you’re a monthly depositor for the coming year. If it was more than $50,000, you’re a semi-weekly depositor. The classification holds for the full calendar year regardless of what your current-year payroll looks like.

New employers start as monthly depositors. The IRS treats a lookback period that doesn’t exist yet as zero liability, which puts first-year employers below the $50,000 line by default.²

Monthly Deposit Deadlines

Monthly depositors deposit everything accumulated during a calendar month by the 15th of the following month. Taxes withheld from January paychecks are due February 15, March withholding is due April 15, and so on. If the 15th falls on a Saturday, Sunday, or legal holiday, the deadline moves to the next business day.³

Semi-Weekly Deposit Deadlines

Semi-weekly depositors work off payday, not the calendar month. Two rules cover every possible payday:³

Pay on Wednesday, Thursday, or Friday: deposit by the following Wednesday.
Pay on Saturday, Sunday, Monday, or Tuesday: deposit by the following Friday.

The name is a little misleading. You aren’t depositing twice a week by rule; you’re operating on a tight leash tied to when your employees are paid. Semi-weekly depositors always get at least three business days after the deposit period closes to send the money. When a federal holiday lands inside those three days, you get one extra day per holiday.⁴

The $100,000 Next-Day Deposit Rule

Accumulate $100,000 or more of employment tax liability on any single day and the normal schedule stops mattering. The full amount is due the next business day, whether you’re monthly or semi-weekly.³

The threshold looks at a single deposit period, not a running total across periods. A semi-weekly depositor who ends a Saturday-through-Tuesday period at $95,000 and then accrues $10,000 on Wednesday hasn’t triggered the rule. The $95,000 remains due Friday and the $10,000 falls into the next period, due the following Wednesday.³

Triggering the $100,000 rule reclassifies you. You become a semi-weekly depositor immediately for the rest of the current calendar year and for all of the next.⁵

The $2,500 Quarterly Exception

At the other end, if your total tax liability for a quarter is under $2,500, you don’t have to deposit during the quarter at all. Pay the full amount when you file Form 941 for that quarter. This exception disappears if you hit the $100,000 next-day trigger at any point during the quarter.⁵

How to Make the Deposit

Every federal tax deposit goes through the Electronic Federal Tax Payment System (EFTPS). It’s a free Treasury service, and the IRS no longer accepts paper coupons.⁶

Enrollment requires your EIN, business name and address, and bank account information. You receive a PIN and internet password, and each deposit generates a confirmation number tied to the tax type (941), tax period, and dollar amount.

Here’s the timing detail that catches employers off guard: EFTPS deposits must be scheduled by 8:00 PM Eastern Time on the day before the due date. Submitting on the due date itself counts as late even if the funds clear that same day. For a Wednesday semi-weekly deadline, that means initiating the payment by 8:00 PM ET Tuesday. Build the one-day cushion into your payroll calendar.

The Small-Shortfall Safe Harbor

Rounding and last-minute payroll adjustments happen. The IRS won’t penalize a deposit shortfall if both conditions are met:³

The shortfall doesn’t exceed the greater of $100 or 2% of the amount you were required to deposit.
You deposit the missing amount by the makeup date.

For monthly depositors, the makeup date is the due date of the Form 941 for the quarter in which the shortfall occurred. For semi-weekly depositors, it’s the earlier of the first Wednesday or Friday on or after the 15th of the following month, or the return due date for that period.⁴

Penalties for Late Deposits

Late deposits carry a failure-to-deposit penalty that scales with lateness:⁷

1 to 5 days late: 2% of the underpayment.
6 to 15 days late: 5%.
More than 15 days late: 10%.
More than 10 days after the IRS sends the first delinquency notice: 15%.

The IRS can waive these penalties for reasonable cause, such as a natural disaster or serious illness. Cash flow difficulty and unfamiliarity with the rules do not qualify.

The Trust Fund Recovery Penalty

Withheld income tax and the employee share of Social Security and Medicare are trust fund taxes: the employer holds them for the government rather than owning them. When a responsible person willfully fails to deposit those amounts, the IRS can assess a penalty equal to 100% of the unpaid trust fund portion against that individual personally.⁸

A responsible person is anyone with authority to decide which creditors get paid. That can reach officers, directors, bookkeepers, and payroll managers with check-signing authority, and the IRS can assess the penalty against more than one person for the same debt. “Willful” here means knowingly using withheld payroll money to pay other business expenses instead of remitting it, which is why this penalty is rarely abated.⁹

A Note on Filing Versus Depositing

Deposits and returns are separate obligations. Even if every dollar was deposited on time, you still have to file Form 941 by the last day of the month after each quarter closes. Depositing all quarterly taxes in full and on time earns you an extra 10 days to file.¹

If You File Form 944 Instead

The rules above assume you’re a Form 941 filer. Very small employers whose total annual liability for Social Security, Medicare, and withheld income tax is $1,000 or less may be assigned by the IRS to file Form 944 annually instead of Form 941 quarterly. Form 944 filers operate on a different deposit and filing rhythm and should follow the instructions specific to that form.¹⁰

1
Internal Revenue Service. Instructions for Form 941 (03/2026)
2
Internal Revenue Service. Notice 931 – Deposit Requirements for Employment Taxes
3
Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide
4
eCFR. 26 CFR 31.6302-1 – Deposit Rules for Taxes Under the Federal Insurance Contributions Act (FICA) and Withheld Income Taxes
5
Internal Revenue Service. Topic No. 757, Forms 941 and 944 – Deposit Requirements
6
Internal Revenue Service. EFTPS The Electronic Federal Tax Payment System
7
Office of the Law Revision Counsel. 26 USC 6656 – Failure to Make Deposit of Taxes
8
Internal Revenue Service. Employment Taxes and the Trust Fund Recovery Penalty (TFRP)
9
Internal Revenue Service. Trust Fund Recovery Penalty
10
Internal Revenue Service. About Form 944, Employer’s Annual Federal Tax Return