Running Payroll Yourself for a One-Person S Corp: 941, 940, W-2

Can a one-person S corporation run its own payroll without a provider?

Yes. An employer may outsource some or all of its payroll duties, and an employer that does stays responsible for the withholding, deposits and returns (IRS: Publication 15). Doing the work in house puts the schedule below on the owner.

Wages are required when the owner works in the business. When an officer does more than minor services for the corporation and is paid or entitled to be paid, those payments are wages, and being a shareholder does not change that (IRS: S corporation officers). An S corporation must pay reasonable compensation to a shareholder-employee before non-wage distributions, and the IRS can reclassify distributions as wages (IRS: compensation issues). For the size of the salary, see S corporation owner salary.

The routine below fits a corporation whose first pay date, deposits and returns are all on time. It needs more when:

• Payroll started mid-year or has not run yet this year. See S corporation payroll never run.
• A deposit or return is already late, or an IRS notice arrived. See behind on payroll taxes.
• Forms 941 and the books do not agree. Line 12 should match the federal payroll tax the books show as owed for the quarter (income tax withheld plus both shares of Social Security and Medicare, before any adjustments or credits), not wage expense. A gap that stays needs the returns, deposit confirmations and ledger read side by side; see bookkeeping help.
• Wages are earned in more than one state, or other employees join. See employees in another state and setting up payroll.

Gather first: the corporation's EIN, the owner's Form W-4, state employer account numbers where the state requires them, electronic deposit access, any Forms 941 filed for earlier quarters (they set the deposit schedule), and a log of every pay date with gross pay, each withholding, net pay and the confirmation number of each deposit.

What do I deposit and file each month, quarter and year?

A one-owner S corporation has one cycle: each payday creates a deposit, each quarter ends in a Form 941, and each year closes with Forms W-2, W-3 and 940. The deposit falls due before the return, usually weeks earlier.

A date that falls on a Saturday, Sunday or legal holiday moves to the next business day (IRS: Publication 15). For this tax year January 31 is a Sunday, so the fourth-quarter Form 941 and Form 940 are due February 1, 2027. State accounts run on their own calendars.

How do I work out the withholding on my own paycheck?

The corporation withholds from the owner's wages as it would for any employee: Form W-4 and the IRS tables set income tax, and flat rates set Social Security and Medicare. The corporation, not the owner personally, sends the money to the IRS.

1. Get a Form W-4. The owner completes Step 1 (name, address, Social Security number, filing status) and signs Step 5; Steps 2, 3 and 4 apply only when relevant (IRS: Publication 15-T). With no completed form, withhold as Single or Married filing separately with no entries in Steps 2 to 4 (IRS: Publication 15).
2. Figure income tax from the pay period, gross wages and the W-4. An automated payroll system uses the percentage method tables and Worksheet 1A; a manual system uses the wage bracket or manual percentage method tables (IRS: Publication 15-T).
3. Withhold Social Security and Medicare: 6.2% Social Security on wages up to $184,500, and 1.45% Medicare on all wages (IRS: Publication 15). Also withhold 0.9% Additional Medicare Tax, only on wages the corporation pays above $200,000 in the calendar year, starting with the paycheck that crosses that line; it falls on the owner only, with no corporate match (IRS: Publication 15).

Net pay is gross wages less those amounts and any state withholding. The withheld income tax and employee share of Social Security and Medicare are trust fund taxes: part of the owner's wages that the corporation owes to the Treasury, not corporate money (IRS: Publication 15).

What does the S corporation owe on top of my pay?

A one-owner S corporation owes the employer half of Social Security and Medicare, federal unemployment tax and usually a state unemployment tax, all on top of the owner's wages.

FUTA tax applies if the corporation paid wages of $1,500 or more in any quarter of this or the prior year, or had an employee in at least 20 different weeks of either year (IRS: Publication 15).

Three things raise FUTA tax above 0.6% (IRS: Instructions for Form 940):

• The state leaves corporate officers out of state unemployment tax. FUTA tax on those wages is then 6.0%, because there is no state tax to credit. A zero rate that the state assigns is different and keeps the full credit.
• State tax is paid after the Form 940 due date. The late payment earns only 90% of the credit.
• The wages are in a credit reduction state, one that has not repaid money it borrowed from the federal government for unemployment benefits. The Department of Labor decides which states.

Check the owner's state before assuming the lower rate; the US Department of Labor lists each state's agency.

How and when do I deposit payroll taxes: monthly or semiweekly?

A one-owner S corporation deposits after each payday on the monthly or semiweekly schedule that a lookback sets, and a new business is monthly for its first calendar year. The deposit covers income tax withheld plus both shares of Social Security and Medicare; FUTA follows its own rule below (IRS: Publication 15).

The lookback adds the line 12 totals of the four Forms 941 for the four quarters ending on June 30 of the prior year. A corporation that has never filed a Form 941 reported nothing there (IRS: Publication 15).

The labels do not describe how often wages are paid, and each due date runs from the pay date (IRS: Publication 15).

When can the return carry the payment? A corporation may skip the deposit and pay with a timely Form 941 when line 12 is under $2,500 for either the current or the prior quarter and no $100,000 next-day obligation arose in the current quarter (IRS: Publication 15; IRS: Instructions for Form 941). When the quarter's total may run higher, deposit on schedule. A required deposit paid with the return draws a 10% penalty.

How to pay. Federal deposits must be electronic: through EFTPS, IRS Direct Pay or the IRS business tax account, or through a tax professional, bank or payroll service acting for the corporation. Each payment gets an EFT trace number to keep as the receipt (IRS: Publication 15). EFTPS is free and enrollment can take up to five business days (IRS: EFTPS), so enroll before the first pay date. EFTPS takes a same-day payment of $1 million or less submitted before 3:00 p.m. Eastern time on a business day; a larger one is due by 8:00 p.m. Eastern time the day before. A third party may set earlier cutoffs (IRS: Publication 15).

Do cash-basis books change when payroll taxes are due?

No. Federal deposit deadlines run from the date wages are paid, not from when the cost is accrued in the books (IRS: Publication 15). A cash-basis and an accrual-basis corporation owe the same deposit on the same date; they differ only in when the expense is recorded. For the entries, see payroll journal entries.

What do I file each quarter, and when is Form 941 due?

Unless the IRS has assigned Form 944, a one-owner S corporation files Form 941 for each quarter, due the last day of the month after the quarter ends, or 10 days later if every deposit for the quarter was made on time and in full (IRS: Instructions for Form 941). It reports the quarter's wages, income tax withheld, and Social Security and Medicare tax.

The extra 10 days are for timely deposits in full payment of the quarter's tax. A quarter paid with the return has no deposits and the instructions do not say it qualifies, so use the earlier date.

• Every quarter counts. The first Form 941 covers the quarter in which wages were first paid. After that a return is due every quarter, even with nothing to report, unless the employer is seasonal or files a final return (IRS: Instructions for Form 941). If wages stop for good, mark the final return on line 17.
• The lines that matter. Line 12 is the quarter's total tax, line 13 total deposits, line 14 any balance due. A monthly depositor lists each month's liability on line 16 by pay date, and the total must equal line 12; a semiweekly depositor attaches Schedule B instead. A quarter that meets the $2,500 rule above checks the first box on line 16 and lists nothing. Otherwise, if the monthly amounts are missing or wrong, the IRS can assess an "averaged" failure-to-deposit penalty, figured as if the quarter's tax built up evenly over the quarter instead of on the real pay dates (IRS: Instructions for Form 941; IRS: Publication 15).
• How to file. On paper or through IRS e-file; a fee may be charged to file electronically (IRS: employment tax due dates). Tax preparation software or a tax professional can e-file the return and pay a balance due in the same step by electronic funds withdrawal, which is not for federal tax deposits. A balance due goes by EFT when the corporation had to deposit; when it did not, such as under the $2,500 rule above, card, check or money order also work, though the instructions ask for electronic payment (IRS: Instructions for Form 941, line 14).

Can I file once a year with Form 944 instead of Form 941?

Rarely for an owner's payroll. Form 944 is for employers whose yearly Social Security, Medicare and withheld income tax is $1,000 or less, and an employer may use it only after the IRS says so in writing (IRS: About Form 944). An employer asks by phone or letter, in a window early in the year that the Instructions for Form 941 set, and keeps filing Forms 941 until the written notice arrives (IRS: Instructions for Form 941). The reverse holds too: a corporation the IRS has told in writing to file Form 944 files it, not quarterly Forms 941, even when its yearly tax passes $1,000, until the IRS confirms a change in writing (IRS: Instructions for Form 944).

The IRS says wages of $5,000 or less for the year generally keep the tax at or under that limit (IRS: Instructions for Form 944).

What do I file at year-end: Form W-2, Form W-3 and Form 940?

At year-end a one-owner S corporation gives the owner a Form W-2, files Copy A with a Form W-3 at the Social Security Administration, and files Form 940 for federal unemployment tax.

• Form W-2 is required whenever any income, Social Security or Medicare tax was withheld, whatever the wages, and when wages reach $2,000 even with nothing withheld (IRS: Forms W-2 and W-3 instructions).
• E-filing is mandatory only at 10 or more information returns in the year, counting Forms W-2 with Forms 1099 and similar returns. The Social Security Administration's Business Services Online has fill-in forms and builds Form W-3 automatically (IRS: Forms W-2 and W-3 instructions).
• Health insurance the corporation pays for the owner has its own wage-reporting rules for a shareholder who owns more than 2% (IRS: compensation issues); see health insurance for owners.
• Form 940 is due even when the tax is small. A corporation that meets the FUTA test files it (IRS: Instructions for Form 940). A FUTA deposit is due only when the quarter's tax, with any carryover, is over $500, by the last day of the month after the quarter (IRS: Publication 15). One employee's FUTA tax on the $7,000 wage base stays under that even at the full 6.0%, so it can be paid with Form 940 instead of deposited. The 10-day extension is for FUTA tax deposited when due; the instructions do not say it covers tax paid with the return instead (IRS: Instructions for Form 940).

What do the state side and the books add?

State accounts, records and a year-end tie-out are the parts of running payroll yourself that no federal form prompts.

• State accounts. Most employers pay state as well as federal unemployment tax (IRS: Publication 15). Whether the state also wants income tax withheld and wage reports filed depends on where the owner works; the IRS links each state's employer pages (IRS: state government websites). California is in California payroll taxes and EDD setup. All 50 states also have a new-hire registry, and the owner's first payroll can trigger a report (IRS: Publication 15); see setting up payroll.
• Records. Keep employment tax records at least four years: wages by date, the Form W-4, and each deposit's date, amount and EFTPS acknowledgment number (IRS: Publication 15). For the rest, see payroll records retention.
• Form 941 to Form W-3. Income tax withheld, Social Security wages and Medicare wages on Form W-3 should match the year's four Forms 941. The Social Security and Medicare tax on the four returns, which include the employer share, should be about twice the tax on Form W-3. When they do not match, the IRS and the Social Security Administration may contact the employer (IRS: Forms W-2 and W-3 instructions). In the books, line 12 should match the federal payroll tax liabilities created in the quarter and wages the wages on the returns; deposits reduce the unpaid balance and are not expense. See payroll journal entries.

What happens if a deposit or return is missed, and who is liable?

The corporation owes the tax, penalties and interest, and the owner can be personally liable for the trust fund part: the income tax withheld and the employee's Social Security and Medicare tax. A payroll service does not move that responsibility: the employer stays liable if the service misses a deposit (IRS: Publication 15).

A late Form 941, tax paid late and tax left unpaid after an IRS notice carry further penalties and interest; the rates and how to ask for relief are in behind on payroll taxes.

The deposit penalties do not apply when a failure was due to reasonable cause and not willful neglect, and the late-filing and late-payment penalties are not charged for reasonable cause either (IRS: Publication 15).

The trust fund recovery penalty is separate and personal (section 6672 of the Internal Revenue Code). If income tax or employee Social Security and Medicare tax that must be withheld is not withheld, or is withheld and not paid to the Treasury, the penalty equals 100% of the unpaid amount. The IRS may assess it against each person it finds responsible who acted willfully, and someone who signs the checks or can spend the business's funds may qualify; the business does not have to have closed (IRS: Publication 15; IRS: employment taxes and the trust fund recovery penalty). The usual time limit to assess it is 3 years from the April 15 after the payroll year, or from the filing date if later, and there is none for a period with no return filed (IRS: Internal Revenue Manual 5.7.3). For the personal side, see the trust fund recovery penalty.

When is it worth handing payroll to someone else?

When the schedule, not the arithmetic, is what goes wrong. One owner's payroll is a few numbers each payday, but every payday sets a deposit date, every quarter a return, and the owner is the only person who can miss them.

Handing payroll off is worth weighing when a deposit or return was already missed, payroll started mid-year, Forms 941 and the books do not agree, wages are earned in more than one state, or other employees are coming.

The corporation stays responsible even then, so the IRS suggests enrolling in EFTPS to verify each payment and treats a provider's first missed or late payment as a red flag (IRS: Outsourcing payroll duties).

Will a payroll service pull the tax from the corporation's bank account?

Federal rules require electronic deposits and let a payroll service or other trusted third party make them for the corporation (IRS: Publication 15). The IRS describes services that run payroll with the employer providing the funds first (IRS: Outsourcing payroll duties). When and how a service collects those funds from the corporation's bank account is part of the arrangement with that service, so read it before signing. For a mid-year move, see switching payroll providers.

Example

These examples are illustrative; all amounts are in US dollars.

First-year payroll for a $60,000 salary

A Texas consultant's S corporation pays the owner $60,000 a year, $5,000 a month, in its first year of payroll. The corporation's Social Security and Medicare of 7.65% is $4,590 a year on top of the wages, and the owner's matching $4,590 comes out of the pay. Assume $400 a month of income tax withheld.

With no Forms 941 in the lookback period, the corporation deposits monthly. Each month's deposit is $400 + $382.50 + $382.50 = $1,165, due by the 15th of the next month. Assume the state counts the owner's wages for unemployment tax and the corporation pays that tax on time; then FUTA tax for the year is 0.6% of $7,000, or $42, payable with Form 940. State unemployment tax is separate.

A quarter under the small-liability line

An owner's Form 941 for January to March shows $1,800 of total tax on line 12. That is under $2,500 and no next-day obligation arose, so the corporation may pay the $1,800 with the return instead of depositing. The return is still due April 30. If the quarter could have passed $2,500, and the prior quarter did not come in under it, the corporation deposits on schedule.

Paying yourself on the 15th

An owner pays herself $5,000 gross on the 15th of each month. The withholding is $400 of income tax, $310 of Social Security and $72.50 of Medicare, so the bank transfer to her is $4,217.50. The other $782.50 stays with the corporation to go to the IRS, with the corporation's own $382.50. The corporation, not the owner, makes that $1,165 deposit and files Form 941 for the quarter.

Different for you?

• You own a single-member LLC that has not elected S status: the wage rules differ; see wages from your own single-member LLC.
• No payroll has run yet this year: see S corporation payroll never run before using this routine.
• A deposit or return is already missed, payroll started mid-year, or Forms 941 and the books do not agree: each needs the filed returns, the deposit history and the books laid side by side. See behind on payroll taxes for the notices and penalties, and bookkeeping help for the books and records side.
• A payroll provider missed deposits, or a run was wrong: see payroll provider did not pay your taxes and fixing a payroll mistake.
• You want to set the salary figure, or you also owe your own estimated tax: see S corporation owner salary and S corporation estimated tax payments.
• The owner works in California or another state: see California payroll taxes and EDD setup or employees in another state.
• You are hiring a first employee or moving payroll to a new provider: see setting up payroll or switching payroll providers.