Every employer that withholds federal income tax, Social Security, and Medicare from paychecks falls into one of two deposit schedules: monthly or semi-weekly. The IRS decides which one applies before the year begins, using a fixed lookback window. If your total payroll tax liability during that window was $50,000 or less, you are a monthly depositor for the coming year. If it was more than $50,000, you are a semi-weekly depositor.1Internal Revenue Service. Publication 15 (Circular E), Employers Tax Guide The comparison between monthly vs. semi-weekly depositor status matters because the two schedules differ in deposit timing, weekend and holiday treatment, quarterly filing paperwork, and how much room you have when payroll spikes.
How the IRS Assigns Your Schedule
Your 2026 classification is set by a 12-month lookback period that runs from July 1, 2024, through June 30, 2025, for Form 941 filers. The IRS totals the tax liability you reported across those four quarters, and that single number decides your category for all of 2026.2IRS. Notice 931 – Deposit Requirements for Employment Taxes
Once set, the classification stays put for the whole calendar year. A new contract that doubles your payroll in March does not bump you to semi-weekly for the rest of the year. The only trigger that forces a mid-year change is the $100,000 next-day rule discussed below.
New employers start out as monthly depositors. If your business did not exist through the full lookback period, the IRS treats the missing quarters as zero liability, which puts you under the $50,000 threshold by default.2IRS. Notice 931 – Deposit Requirements for Employment Taxes
Filers of Form 943, Form 944, and Form 945 use a different lookback period, calendar year 2024 for 2026 filings, but the $50,000 threshold works the same way.1Internal Revenue Service. Publication 15 (Circular E), Employers Tax Guide
Monthly Depositor Rules
Monthly depositors owe one deposit per month. Take everything that accumulated during a calendar month and send it in by the 15th of the following month. January taxes are due by February 15.3Internal Revenue Service. Topic No. 757, Forms 941 and 944 – Deposit Requirements If the 15th lands on a Saturday, Sunday, or legal holiday, the deadline moves to the next business day.4Internal Revenue Service. Employment Tax Due Dates
This is the simpler rhythm. A business running biweekly or semi-monthly payroll can hit multiple pay dates during a month and still make one combined deposit at the middle of the next month. No extra quarterly schedule is required with Form 941.
Semi-Weekly Depositor Rules
Semi-weekly depositors follow a payday-driven calendar. The IRS splits the week into two windows:4Internal Revenue Service. Employment Tax Due Dates
- Paydays on Wednesday, Thursday, or Friday: deposit by the following Wednesday.
- Paydays on Saturday, Sunday, Monday, or Tuesday: deposit by the following Friday.
The name is misleading. You are not required to deposit twice every week. You deposit based on when you actually pay employees. A business with all its paydays in one window makes one deposit that week; a business that runs payroll on both a Monday and a Wednesday of the same week has two separate deposit obligations with two separate deadlines.
The Three-Business-Day Guarantee
Semi-weekly depositors always get at least three business days after the close of a liability window to make a deposit. If a legal holiday falls within that three-day span, you get an extra business day for each holiday.2IRS. Notice 931 – Deposit Requirements for Employment Taxes That is more forgiving than the monthly rule, which only shifts the deadline to the next single business day.
Schedule B With Every Quarterly Return
Semi-weekly depositors must file Schedule B (Form 941) with each quarterly return, listing daily tax liability across the entire quarter. The IRS uses Schedule B to test whether each deposit was on time. Skipping it or filling it out incorrectly can lead the IRS to compute an averaged failure-to-deposit penalty, which usually costs more than the actual day-by-day breakdown would.5IRS. Instructions for Schedule B (Form 941) Monthly depositors do not file Schedule B.
The $100,000 Rule That Overrides Both Schedules
If you accumulate $100,000 or more in payroll tax liability on any single day, you must deposit that amount by the close of the next business day. This applies whether you are currently monthly or semi-weekly.4Internal Revenue Service. Employment Tax Due Dates
For a monthly depositor, hitting this threshold has a lasting effect. You become a semi-weekly depositor the next day and stay semi-weekly for the rest of the calendar year and the entire following calendar year. Trigger it in 2026 and you remain semi-weekly through the end of 2027, regardless of what the lookback period would have said.2IRS. Notice 931 – Deposit Requirements for Employment Taxes
The employers most likely to trip this rule are businesses with modest ongoing payroll that occasionally process a large bonus run, a severance payout, or a back-pay settlement. If a single day’s liability could ever approach six figures, build the next-day deposit into your cash planning before you run that payroll.
Small Employer Carve-Outs
Quarterly Liability Under $2,500
If your total tax liability for the current quarter, or the prior quarter, is less than $2,500, you do not have to make federal tax deposits during that quarter. You can pay the full amount with a timely-filed Form 941. The catch: you cannot have triggered the $100,000 next-day rule during the quarter.6Internal Revenue Service. Instructions for Form 941 If your liability is $2,500 or more and you skip depositing in favor of paying with the return, expect a failure-to-deposit penalty.
Annual Filing on Form 944
Employers whose total annual payroll tax liability is $1,000 or less may qualify to file Form 944 once a year instead of quarterly Form 941s.7Internal Revenue Service. About Form 944, Employers Annual Federal Tax Return You cannot switch on your own. To move to Form 944 for 2026, contact the IRS by phone between January 1 and April 1, 2026, or mail a written request postmarked by March 16, 2026, and wait for written confirmation before filing Form 944 instead of Form 941.8Internal Revenue Service. Instructions for Form 944
Penalties for Missing Either Schedule
The failure-to-deposit penalty scales with how late the money arrives:9Office of the Law Revision Counsel. 26 USC 6656 – Failure to Make Deposit of Taxes
- 1 to 5 days late: 2% of the underpayment.
- 6 to 15 days late: 5%.
- More than 15 days late: 10%.
- Not deposited within 10 days after the first IRS delinquency notice, or upon a notice demanding immediate payment: 15%.10Internal Revenue Service. Failure to Deposit Penalty
Each percentage applies to the amount you should have deposited but did not, not to your total quarterly liability. A $1,000 shortfall deposited three days late is a $20 penalty.
Safe Harbor for Small Shortfalls
If you deposit slightly less than you owe, the IRS will not penalize the shortfall if it is no more than the greater of $100 or 2 percent of the required deposit, and you make up the difference by the shortfall makeup date.11eCFR. 26 CFR 31.6302-1 – Deposit Rules for Taxes Under the Federal Insurance Contributions Act For monthly depositors, the makeup date is the due date of the quarterly return. Semi-weekly depositors get until the first Wednesday or Friday on or after the 15th of the month following the month the shortfall occurred.12Internal Revenue Service. Failure to Deposit Penalty Only monthly depositors have the option of simply paying a shortfall with their return rather than making a separate deposit.
First-Time and Reasonable-Cause Relief
The IRS can waive the failure-to-deposit penalty for an employer’s first quarter of required deposits, or for the first deposit after a mandatory schedule change, so long as the return was filed on time.9Office of the Law Revision Counsel. 26 USC 6656 – Failure to Make Deposit of Taxes Beyond that, the IRS may abate penalties for reasonable cause, which means ordinary business care and prudence that still could not produce compliance. The IRS weighs your explanation, your compliance history over the prior three or more years, how long the noncompliance lasted, and whether the cause was truly beyond your control, such as a natural disaster, serious illness, or fire that destroyed records.13Internal Revenue Service. 20.1.1 Introduction and Penalty Relief
Rules That Apply to Both Schedules
All federal tax deposits must be made electronically. You cannot bring a check and a coupon to a bank. The IRS accepts deposits through your business tax account at IRS.gov, Direct Pay for businesses, and the Electronic Federal Tax Payment System.14Internal Revenue Service. Depositing and Reporting Employment Taxes New businesses should enroll in EFTPS as soon as they receive their EIN, because validation and PIN delivery by mail takes five to seven business days.15Electronic Federal Tax Payment System (EFTPS). Welcome to EFTPS Online
Outsourcing payroll does not shift liability. If a third-party provider misses a deposit, files late, or vanishes with the funds, the IRS still holds the employer responsible for the full amount.16Internal Revenue Service. Third Party Payer Arrangements – Payroll Service Providers and Reporting Agents Reporting agents must send written quarterly notices reminding the employer of that responsibility. Monitor your EFTPS account yourself to confirm deposits are landing on time.
Withheld income and FICA taxes are held in trust for the government. If a business fails to turn them over, the IRS can assess the trust fund recovery penalty against any responsible person who willfully failed to pay, equal to the full amount of the unpaid trust fund taxes.17Office of the Law Revision Counsel. 26 USC 6672 – Failure to Collect and Pay Over Tax, or Attempt to Evade or Defeat Tax Using withheld payroll taxes to pay rent, vendors, or a loan while ignoring the deposit obligation meets the willfulness standard, and more than one person at the same business can be assessed the full penalty.
Keep employment tax records at least four years after the tax is due or paid, whichever is later, including Forms 941, EFTPS deposit confirmations, and payroll registers.18Internal Revenue Service. How Long Should I Keep Records Because the lookback period reaches back roughly 18 months and audits can begin well after a return is filed, four years is a floor rather than a target.