Running corporation payroll taxes means withholding federal income tax and the employee share of Social Security and Medicare from every paycheck, matching the employer share, paying federal unemployment tax, depositing the money on the schedule the IRS assigns your business, and filing Forms 941, 940, and W-2 by their deadlines. Corporations carry one extra risk that sole proprietors don’t: officers who control the company’s finances can be held personally liable for withheld taxes the corporation never turned over. Everything below is built around getting those pieces right.
What You Need Before the First Paycheck
A corporation needs a Federal Employer Identification Number before it can run payroll. The IRS issues EINs at no cost, and online applications generate the number immediately.1Internal Revenue Service. Get an Employer Identification Number Most states also issue a separate state tax ID for state withholding and unemployment insurance.
Every new hire completes two federal forms. Form W-4 tells you how much federal income tax to withhold.2Internal Revenue Service. About Form W-4, Employee’s Withholding Certificate Form I-9 verifies the employee’s legal right to work in the United States; the employer must examine original identity and work authorization documents and complete the employer section within three business days of the start date.3U.S. Citizenship and Immigration Services. I-9, Employment Eligibility Verification
Corporations must also report every new hire to their state’s designated agency, generally within 20 calendar days of the start date. The report helps state agencies enforce child support orders and detect benefits fraud.
Officer-Shareholders Are Employees
If a corporate officer performs more than minor services and receives (or is entitled to receive) payment, that person is an employee for payroll tax purposes. Being a shareholder or a board member doesn’t change the answer, and courts have consistently treated these payments as wages subject to federal employment taxes.4Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers The narrow exception is an officer who performs no services (or only trivial ones) and neither receives nor is entitled to any compensation.5Internal Revenue Service. Paying Yourself
Officer-shareholders in S corporations face a specific pressure point: the IRS expects a reasonable salary before profit distributions. Wages carry Social Security and Medicare tax; S corporation distributions don’t. When an officer takes a token salary and pulls the rest as distributions, the IRS can reclassify those distributions as wages and assess back taxes, interest, and penalties.6eCFR. 26 CFR 1.162-7 – Compensation for Personal Services The agency has flagged this issue with S corporations repeatedly.7Internal Revenue Service. Wage Compensation for S Corporation Officers
There is no single formula. The IRS and courts weigh the officer’s training and experience, actual duties, time devoted to the business, what comparable businesses pay for comparable work, the corporation’s dividend history relative to officer pay, and any formal compensation agreements. Benchmarking against industry salary data and keeping the analysis in writing is the defensible approach.
Workers who aren’t officers still need to be classified correctly. Misclassifying an employee as an independent contractor means the corporation skipped withholding and its share of employment taxes, and the IRS can go back and collect. If you have any doubt about a worker’s status, the three-factor test the IRS uses turns on behavioral control, financial control, and the nature of the relationship.8Internal Revenue Service. Topic No. 762, Independent Contractor vs. Employee
Federal Payroll Tax Rates
Social Security and Medicare
Social Security tax is 6.2% withheld from the employee and 6.2% paid by the employer, applied to wages up to $184,500 in 2026. Medicare adds 1.45% from each side with no wage cap.9Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide10Office of the Law Revision Counsel. 26 U.S. Code 3101 – Rate of Tax11Office of the Law Revision Counsel. 26 U.S. Code 3111 – Rate of Tax Combined, the employer’s FICA cost is 7.65% on wages up to the Social Security cap and 1.45% above it.
Once an employee’s wages cross $200,000 in a calendar year, the corporation must withhold an Additional Medicare Tax of 0.9% on the excess. There is no employer match on this piece.12Internal Revenue Service. Questions and Answers for the Additional Medicare Tax
Federal Unemployment (FUTA)
FUTA is a 6% employer-only tax on the first $7,000 of each employee’s annual wages.13Office of the Law Revision Counsel. 26 U.S.C. 3301 – Rate of Tax14Office of the Law Revision Counsel. 26 U.S.C. 3306 – Definitions Corporations that pay their state unemployment taxes on time typically receive a credit of up to 5.4%, bringing the effective federal rate down to 0.6%, or about $42 per employee per year. Employers in states with outstanding federal unemployment loan balances may receive a reduced credit and pay more.
State Payroll Taxes
Every state runs its own unemployment insurance program with its own wage base and rate schedule, and rates are usually experience-rated based on your former employees’ claims history. Some states also require contributions for disability insurance or paid family leave. If the corporation operates in more than one state, each state’s rules have to be tracked separately.
When to Deposit Payroll Taxes
Federal employment taxes are deposited electronically through EFTPS.15Internal Revenue Service. Depositing and Reporting Employment Taxes The IRS assigns you a schedule based on a lookback period:
- Reported $50,000 or less in employment taxes during the lookback period: monthly depositor, due by the 15th of the following month.
- Reported more than $50,000: semi-weekly depositor, with deposit dates tied to your paydays.
- Accumulated $100,000 or more in taxes on any single day: next-business-day deposit required, regardless of your normal schedule.16Internal Revenue Service. Topic No. 757, Forms 941 and 944 – Deposit Requirements
Very small employers with quarterly tax liability under $2,500 can skip deposits and pay the full amount with the quarterly return.9Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide
Payroll Tax Filings and Deadlines
Form 941, Quarterly
Most corporations file Form 941 every quarter to report federal income tax withheld plus the employer and employee shares of Social Security and Medicare.17Internal Revenue Service. About Form 941, Employer’s Quarterly Federal Tax Return Due dates are April 30, July 31, October 31, and January 31.
Form 940, Annual FUTA
Form 940 reports the corporation’s annual FUTA liability and is due January 31 of the following year. Corporations that deposited all FUTA taxes on time get an extra 10 days, until February 10.18Internal Revenue Service. About Form 940, Employer’s Annual Federal Unemployment (FUTA) Tax Return
Form W-2, Year-End Wage Statements
By February 1, 2027, for the 2026 tax year, corporations must furnish each employee a Form W-2 showing total wages and taxes withheld. The same date applies to filing copies with the Social Security Administration, whether on paper or electronically.19Internal Revenue Service. General Instructions for Forms W-2 and W-3 (2026)
Penalties for Late Deposits, Filings, and Payments
The IRS runs three separate penalty tracks, and they can stack.
A late-filed return triggers a failure-to-file penalty of 5% of the unpaid tax for each month or partial month the return is overdue, capped at 25%.20Internal Revenue Service. Failure to File Penalty A failure-to-pay penalty of 0.5% per month applies to unpaid tax after the due date, also capped at 25%. When both apply in the same month, the failure-to-file penalty is reduced by the failure-to-pay amount for that month.21Internal Revenue Service. Failure to Pay Penalty
Late deposits carry their own tiered penalties on the undeposited amount:
- 1 to 5 days late: 2%
- 6 to 15 days late: 5%
- More than 15 days late: 10%
- Still unpaid more than 10 days after the first IRS notice: 15%
Corporations that are required to deposit through EFTPS but use another method face a separate 10% penalty.22Internal Revenue Service. 20.1.4 Failure to Deposit Penalty
When Officers Become Personally Liable
Withheld income tax and the employee share of FICA are considered held “in trust” for the government. If the corporation doesn’t turn that money over, the IRS can pursue the individuals responsible under the Trust Fund Recovery Penalty. The penalty equals 100% of the unpaid trust fund taxes, collected from the responsible person’s personal assets.23Office of the Law Revision Counsel. 26 U.S.C. 6672 – Failure to Collect and Pay Over Tax, or Attempt to Evade or Defeat Tax
Two elements have to be present. The person must be “responsible,” meaning they had authority to decide which creditors got paid. Officers, directors, check-signers, and anyone controlling company finances can qualify; actual authority matters more than the title on the door. The failure must also be “willful,” which does not require intent to cheat. Paying suppliers or rent instead of the IRS is enough, and failing to investigate after learning taxes may not have been deposited can also establish willfulness.24Internal Revenue Service. Trust Fund Recovery Penalty (TFRP) Overview and Authority
The penalty reaches only the trust fund portion, not the employer’s matching share. More than one person can be held liable for the same unpaid taxes, and the IRS often pursues several officers or managers at once. For a small corporation where one or two people control the finances, this penalty effectively erases the liability protection that incorporation was supposed to provide.
Payroll Records to Keep
Two federal record-keeping regimes overlap. The Fair Labor Standards Act requires payroll records for every non-exempt worker — hours worked each day and week, pay rates, total earnings, and any additions to or deductions from wages — for at least three years, with supporting documents like time cards and schedules kept for at least two.25U.S. Department of Labor. Fact Sheet #21: Recordkeeping Requirements Under the Fair Labor Standards Act The IRS requires employment tax records for at least four years after the tax becomes due or is paid, whichever is later.26Internal Revenue Service. Topic No. 305, Recordkeeping Because the IRS window is longer, four years is the practical minimum for filed returns, deposit receipts, and payroll registers alike.