Updated October 16, 2026. Quick answer: Form 941 is the Employer’s QUARTERLY Federal Tax Return. The instructions say an employer who pays wages subject to federal income tax withholding or social security and Medicare taxes must file it quarterly. The decision that drives the rest of the work is the deposit schedule, monthly or semiweekly, which depends on the lookback period rather than on how often employees are paid.
Picking the Schedule C business code for your work (2025 chart): Schedule C code for house cleaners.
More IRS forms and schedules for individual filers, read line by line: Schedule H Part I, Schedule H Part II FUTA tax and Schedule H Additional Medicare Tax lines 5 and 6.
More IRS forms for employers and business owners, read line by line: Form 940 instructions, Form 943 instructions and Form 720 instructions.
S corporation return (Form 1120-S) for 2025, read line by line: Form 1120-S lines 7 to 12.
Partnership return (Form 1065) for 2025, read line by line: Form 1065 lines 9 and 10.
Schedule C and Schedule SE (Form 1040) for 2025, read line by line: Schedule C lines 14 and 15, Schedule C line 23 and Schedule C lines 25 and 26.
More IRS forms and schedules, read line by line: Form W-3 instructions.
Related reading on this site: W-2 filing deadline.
What Form 941 is and who files it
The form’s title is “Employer’s QUARTERLY Federal Tax Return”. The instructions answer the filing question in one sentence: “If you pay wages subject to federal income tax withholding or social security and Medicare taxes, you must file Form 941 quarterly to report the following amounts.”
The list that follows includes “Federal income tax you withheld.” and “Both the employer and the employee share of social security and Medicare taxes.” Once a business starts, the schedule continues: “After you file your first Form 941, you must file a return for each quarter, even if you have no taxes to report, unless you filed a final return or one of the exceptions listed next applies.”
Some payroll items belong on other returns. “Also, don’t use Form 941 to report unemployment taxes.” And “Employers of household employees don’t usually file Form 941.” An owner who pays herself or himself through a business and is deciding on the pay structure can start with the paying yourself from an LLC page, and the first-hire questions are on the hiring your first help page.
Key numbers at a glance
The rates, the wage base and the deposit thresholds that decide most of the work are collected here exactly as the instructions print them.
| Item | As printed |
|---|---|
| Social security rate | “For 2026, the rate of social security tax on taxable wages is 6.2% (0.062) each for the employer and employee.” |
| Social security wage base | “Stop paying social security tax on and entering an employee’s wages on line 5a when the employee’s taxable wages and tips reach $184,500 for the year.” |
| Medicare rate | “The Medicare tax rate is 1.45% each for the employee and employer, unchanged from 2025.” |
| Medicare wage base | “There is no wage base limit for Medicare tax.” |
| Additional Medicare Tax | “You’re required to begin withholding Additional Medicare Tax in the pay period in which you pay wages in excess of $200,000 to an employee” |
| Small deposit threshold | “If your total taxes after adjustments and nonrefundable credits (line 12) are less than $2,500 for the current quarter or the prior quarter, and you didn’t incur a $100,000 nextday deposit obligation during the current quarter.” |
| Monthly depositor | “If you reported $50,000 or less in taxes during the lookback period, you’re a monthly schedule depositor.” |
| Trust fund recovery penalty | “The penalty is 100% of the unpaid trust fund tax.” |
The instructions also say who bears the Additional Medicare Tax: “Additional Medicare Tax is only imposed on the employee.” The form multiplies the social security wages by 0.124, which combines the employee and employer 6.2% rates. Computed illustration, not an IRS example: for $10,000 of taxable social security wages in a quarter, the computed amount is $10,000 times 12.4%, which is $1,240 on line 5a, column 2.
When Form 941 is due
Each quarter has one due date, counted from the end of the quarter.
| Item | As printed in the instructions |
|---|---|
| Rule | “Your Form 941 is due by the last day of the month that follows the end of the quarter.” |
| Timely deposits | “If you made timely deposits in full payment of your taxes for the quarter, you may file by the 10th day of the 2nd month that follows the end of the quarter.” |
| Example | “For example, you may file Form 941 by May 10 if you made timely deposits in full payment of your taxes for the 1st quarter.” |
| Weekend or holiday | “If any due date for filing falls on a Saturday, Sunday, or legal holiday, you may file your return on the next business day.” |
| Once per quarter | “File Form 941 only once for each quarter.” |
On how to file: “You’re encouraged to file Form 941 electronically.” Electronic filing and the payment options are described in the instructions under the electronic filing heading.
Deposits: monthly or semiweekly
Whether to deposit at all depends on the size of the tax. For the small case quoted in the table above, the instructions say “You don’t have to make a deposit.” They add “To avoid a penalty, you must pay any amount due in full with a timely filed return or you must deposit any amount you owe by the due date of the return.” When deposits are required, the method is fixed: “You must use EFT to make all federal tax deposits.”
The schedule is set by history, not by payroll frequency. “Your deposit schedule isn’t determined by how often you pay your employees.” “The lookback period is the 4 consecutive quarters ending on June 30 of the prior year.” “For 2026, the lookback period begins July 1, 2024, and ends June 30, 2025.”
The two schedules are defined by the amount reported in that period. The monthly rule is in the table above. The other one reads “If you reported more than $50,000 of taxes during the lookback period, you’re a semiweekly schedule depositor.”
A monthly depositor can be moved to the faster schedule by one large day. “If you’re a monthly schedule depositor and accumulate a $100,000 tax liability on any day during the deposit period, you become a semiweekly schedule” depositor on the next day, as the instructions go on to say. The measure of that threshold is also printed: “The $100,000 tax liability threshold requiring a nextday deposit is determined before you consider any reduction of your liability for nonrefundable credits.”
The line walk: Part 1
Part 1 starts with a headcount and a wage total, adds the withheld income tax, builds the social security and Medicare tax, then reconciles to deposits.
| Line | Wording on the form |
|---|---|
| 1 | “Number of employees who received wages, tips, or other compensation for the pay period” |
| 2 | “Wages, tips, and other compensation” |
| 3 | “Federal income tax withheld from wages, tips, and other compensation” |
| 5a | “Taxable social security wages” |
| 5c | “Taxable Medicare wages & tips” |
| 5d | “Taxable wages & tips subject to Additional Medicare Tax withholding” |
| 6 | “Total taxes before adjustments. Add lines 3, 5e, and 5f” |
| 10 | “Total taxes after adjustments. Combine lines 6 through 9” |
| 12 | “Total taxes after adjustments and nonrefundable credits. Subtract line 11 from line 10” |
| 13 | “Total deposits for this quarter” |
| 14 | “Balance due. If line 12 is more than line 13, enter the difference and see instructions” |
| 15a | “Overpayment. If line 13 is more than line 12, enter the difference” |
The headcount has a fixed date. “Enter the number of employees on your payroll for the pay period including March 12, June 12, September 12, or December 12” is the instruction for line 1. Line 12 ties to the next part, and the instructions say “Note that your total tax liability for the quarter must equal your total taxes shown on line 12.”
The balance due and overpayment lines are exclusive. “Never make an entry on both lines 14 and 15a.” On payment method, “Therefore, pay your balance due on Form 941 electronically.”
Part 2: the deposit schedule and the tax liability
Part 2 asks the filer to describe the schedule. A monthly depositor enters liability by month, and a semiweekly depositor attaches Schedule B. The instructions warn about the consequence of using the wrong place: “If you fail to complete and submit Schedule B (Form 941), the IRS may assess deposit penalties based on available information.”
Month placement follows pay dates. “Enter your tax liabilities in the month that corresponds to the dates you paid wages to your employees, not the date payroll liabilities were accrued or deposits were made.”
Penalties and interest
The instructions set out how to avoid both. “You can avoid paying penalties and interest if you do all of the following.” The first two items are “Deposit or pay your taxes when they are due.” and “File your fully completed Form 941 on time.”
Rates and procedure follow. “Penalties and interest are charged on taxes paid late and returns filed late at a rate set by law.” On responding to a notice, “Don’t attach an explanation when you file your return.”
The most serious payroll penalty is the one for unpaid withheld taxes. “If federal income, social security, and Medicare taxes that must be withheld (that is, trust fund taxes) aren’t withheld or aren’t deposited or paid to the United States Treasury, the trust fund recovery penalty may apply.” The table above shows the amount. A business that uses a payroll provider is not off the hook: “You remain responsible if the third party fails to perform any required action.”
Corrections, closing and the W-3 match
Errors on a filed return are fixed on a separate form: “If you discover an error on a previously filed Form 941, or if you otherwise need to amend a previously filed Form 941, make the correction using Form 941-X.”
A business that stops paying wages has its own instruction: “If you permanently go out of business or stop paying wages to your employees, you must file a final return.” For closing an LLC more generally, see the closing an LLC page.
The four quarterly returns are checked against the year-end wage forms. “The IRS matches amounts reported on your four quarterly Forms 941 with Form W-2 amounts totaled on your yearly Form W-3, Transmittal of Wage and Tax Statements.”
Needing an EIN first
Form 941 requires a number. “If you don’t have an EIN, you may apply for one online by going to IRS.gov/EIN.” The application is made on Form SS-4, and the practical steps for a new business are on the how to get an EIN page.
Which revision applies
The edition read for this page is Form 941 (Rev. March 2026) and the Instructions for Form 941 (Rev. March 2026), which are the revisions irs.gov served when they were read on 2026-10-16. Check the revision printed on the form you are filing, because a later revision can change the rates, the wage base, the deposit thresholds and the line layout.
The instructions say which revision to use for the year: “At this time, the IRS expects the March 2026 revision of Form 941 and these instructions to also be used for the second, third, and fourth quarters of 2026.”
Common mistakes
- Choosing the deposit schedule by how often employees are paid. The instructions say the deposit schedule is not determined by how often employees are paid, and depends on the lookback period.
- Putting a semiweekly depositor’s liability on line 16 instead of Schedule B. The instructions say that failing to complete and submit Schedule B can lead to deposit penalties based on available information.
- Skipping the return for a quarter with no wages. The instructions say a return is required for each quarter after the first filing, even with no taxes to report, unless a final return or an exception applies.
Related: how to get an EIN, hiring your first help, paying yourself from an LLC, S corporation reasonable salary, and self-employment tax explained.
Sources
- Form 941 (Rev. March 2026), Employer’s QUARTERLY Federal Tax Return: https://www.irs.gov/pub/irs-pdf/f941.pdf
- Instructions for Form 941 (Rev. March 2026): https://www.irs.gov/pub/irs-pdf/i941.pdf
Read from the IRS documents linked above on October 16, 2026. General information, not tax advice. Your own facts decide the outcome, and a preparer, the account provider or the IRS is the right place to confirm anything consequential.