# Form 941, line by line

> Northwind's Q3 2026 Form 941 from its register: $8,400 of wages, $2,335.20 of tax, nothing due.

Source: https://lopifi.com/learn/payroll-tax-returns/form-941-line-by-line
Part of: Lopifi — US GAAP books on autopilot, checked by a CPA (https://lopifi.com)

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**How do I fill out Form 941?** Northwind's Q3 2026 Form 941 from its register: $8,400 of wages, $2,335.20 of tax, nothing due.

Form 941 walks from wages to tax to deposits. Every line below is computed from Northwind's register, the same way the provider computes it.

| Line | What it is | Northwind |
| --- | --- | --- |
| 1 | Employees paid for the pay period including September 12 | 2 |
| 2 | Wages, tips and other compensation | 8,400 |
| 3 | Federal income tax withheld | 1,050 |
| 5a | Taxable Social Security wages × 12.4% | 1,041.60 |
| 5c | Taxable Medicare wages × 2.9% | 243.60 |
| 5d | Wages subject to Additional Medicare × 0.9% | 0 |
| 5e | Total Social Security and Medicare | 1,285.20 |
| 6 | Total taxes before adjustments (3 + 5e) | 2,335.20 |
| 7 | Adjustment for fractions of cents | 0 |
| 10 | Total taxes after adjustments | 2,335.20 |
| 11 | Research credit against payroll tax (Form 8974) | 0 |
| 12 | Total taxes after credits | 2,335.20 |
| 13 | Deposits for the quarter | 2,335.20 |
| 14 | Balance due | 0 |

Northwind, Form 941 for the third quarter of 2026.

— [Form 941 (Rev. March 2026)](https://www.irs.gov/pub/irs-pdf/f941.pdf) (PDF), Form 941, Employer's QUARTERLY Federal Tax Return

Line 5 recomputes Social Security and Medicare on the quarter's total wages at the combined rates — 12.4% and 2.9%, both halves at once. The paychecks were taxed one at a time and rounded one at a time, so the two can disagree by a few cents. Line 7 carries that difference, and it's why the line exists. Northwind's third quarter shows 0: its paychecks rounded to the same cents the total does. Its fourth quarter won't. With the premium out of every paycheck, the paychecks' Social Security and Medicare no longer land on whole cents, each rounds on its own, and line 7 carries 0.07 — the paychecks withheld and matched $0.07 more than line 5 computes on $24,225 of wages.

> **Line 16.** Part 2 asks which depositor the employer is. Line 12 under $2,500 (this quarter or last) is one box; a monthly depositor fills in its tax by month; a semiweekly one attaches Schedule B. Northwind's September tax goes in month 3.

Line 11 is where a qualified small business takes its research credit against payroll tax, from Form 8974 — see the [R&D credit track](https://lopifi.com/md/learn/rd-credit-against-payroll-tax). A mistake found after filing is corrected on Form 941-X for that quarter, not on the next quarter's 941.

— [Instructions for Form 941 (Rev. March 2026)](https://www.irs.gov/pub/irs-pdf/i941.pdf) (PDF), Instructions for Form 941

## Where this page's rules come from

- [Form 941 (Rev. March 2026)](https://www.irs.gov/pub/irs-pdf/f941.pdf) (PDF) — Form 941, Employer's QUARTERLY Federal Tax Return (form)
- [Instructions for Form 941 (Rev. March 2026)](https://www.irs.gov/pub/irs-pdf/i941.pdf) (PDF) — Instructions for Form 941 (irs)
- [IRS Pub. 15 (2026), Calendar](https://www.irs.gov/pub/irs-pdf/p15.pdf) (PDF) — Form 941 is quarterly: April 30, July 31, October 31, January 31 (irs)

- **Track:** [Payroll](https://lopifi.com/md/learn/payroll)
- **Part of:** [Payroll tax returns: 941, 940 and W-2](https://lopifi.com/md/learn/payroll-tax-returns) — 5 min
- **Terms taught:** [Form 941](https://lopifi.com/md/glossary/form-941), [Payroll register](https://lopifi.com/md/glossary/payroll-register)
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