Form 941 Quarterly Payroll Tax Calculator

How the Form 941 calculator works

Form 941 reports the federal payroll taxes you owe for a calendar quarter, and this tool follows the 2026 line structure. Start with Line 3, the federal income tax you withheld from wages, tips, and other compensation during the quarter. From there it runs the Social Security and Medicare math on lines 5a through 5d and totals it.

Line 5e is the sum of the Column 2 taxes from 5a–5d. Line 6 adds Line 5e to your Line 3 withholding. Because this estimator has no adjustments (lines 7–9) or credits (line 11), Line 12 equals Line 6, and it is never shown below zero. Subtract your Line 13 deposits from Line 12 and you get the primary result: a balance due on Line 14 when tax is higher than deposits, or an overpayment on Line 15 when deposits are higher. Only one of those two lines gets an amount. The 2026 rates are 12.4% combined for Social Security and 2.9% combined for Medicare, and the Social Security wage base is $184,500.

Understanding Form 941 lines 5a–5e

Line 5a is taxable Social Security wages times 0.124 (6.2% from the employer plus 6.2% from the employee). Line 5b is Social Security tips at the same 0.124, and it shares the $184,500 annual wage base cap with 5a: once an employee's year-to-date Social Security wages and tips reach that base, you stop applying the tax for that person. Enter the wages and tips already capped per employee.

Line 5c is Medicare wages and tips times 0.029 (1.45% each side), with no wage cap. Medicare tips go into 5c, so there is no separate tips line for Medicare. Line 5d is the Additional Medicare Tax: 0.9% on the wages an employee earns above $200,000 for the year. It is employee-only, so there is no employer match on that 0.9%. On Line 5d, enter only the amount above $200,000, not the full wages. The employer-versus-employee split shown next to the result works the same way: the employer and employee each carry half of the base FICA, and the employee alone carries the Additional Medicare Tax. If you need to add up the wages and FICA that roll into these lines across a team, the Multi-Employee Payroll Calculator and the Salary to Paycheck Calculator handle the per-employee side that feeds Line 3 and Line 5.

Monthly vs. semiweekly deposit schedules

Filing the return is a separate thing from depositing the tax. Which schedule you use depends on your lookback period: July 1 two years prior through June 30 of the prior year, four quarters in all. If you reported $50,000 or less in taxes during that window, you are a monthly depositor and deposit each month's liability by the 15th of the following month. More than $50,000 makes you a semiweekly depositor, with deposits tied to your paydays.

One rule overrides both schedules: if your accumulated tax liability reaches $100,000 or more on any single day, you must deposit it by the next business day. A monthly depositor who hits that threshold becomes a semiweekly depositor for the rest of that year and the next. Set your status with the depositor chips above and the tool labels the result to match. FUTA is the other employer tax with its own schedule; the SUTA & FUTA Employer Tax Calculator covers those, and the Employer Cost Calculator adds the full employer-side cost including the FICA match.

Form 941 due dates and how WorkLogs44 helps

Form 941 is filed quarterly, due by the last day of the month after each quarter ends: April 30, July 31, October 31, and January 31. If you deposited all of your taxes on time and in full for the quarter, you get an extra 10 business days to file the return. A balance due under $1 does not have to be paid.

The totals this form needs come straight from per-employee wage, FICA, and withholding records. If you track those in the WorkLogs44 Payroll Calculator app, you get the quarterly Social Security, Medicare, and federal withholding figures without re-adding paychecks by hand. Keep in mind this page is an estimator: it leaves out Line 5f (Section 3121(q) tips), the lines 7–9 adjustments, line 11 credits, and Schedule B detail. Column 2 rounding will differ slightly from summed per-paycheck FICA, which the IRS handles with a fraction-of-cents adjustment on Line 7. Check the numbers against your payroll records before filing.