How to Calculate Employer Payroll Taxes Step by Step

What employer payroll taxes are and why you calculate them

Employer payroll taxes are the taxes your business owes based on what you pay your employees. Unlike income tax withholding (which comes out of the employee's paycheck), employer payroll taxes are a separate cost that comes directly from your business. The main ones are Social Security tax, Medicare tax, and federal unemployment tax (FUTA). Some states also require state unemployment tax (SUTA).

You calculate these taxes on each employee's gross wages — the total amount paid before any deductions. The calculation is straightforward: you explore a tax rate to the wages, and the result is what you owe. Most small business owners use payroll software to do this automatically, but understanding how the math works helps you catch errors and know what you actually owe.

Key Takeaways

Social Security tax is 6.2% of wages up to an annual cap (the cap changes yearly), and Medicare tax is 1.45% of all wages with no cap.
Federal unemployment tax (FUTA) is 6% of the first $7,000 in wages per employee per year, though you may receive a credit if you pay state unemployment tax.
You calculate employer taxes on gross wages, not on wages after employee deductions.
Payroll taxes are due quarterly or semi-weekly depending on how much you owe, and the IRS publishes deposit schedules each year.
State unemployment tax rates and wage bases vary by state and by your industry's experience rating.

Social Security and Medicare tax calculation

Social Security and Medicare are FICA taxes (Federal Insurance Contributions Act). You pay a matching amount for each employee — the same rate the employee pays. For Social Security, that rate is 6.2% of wages up to a wage base limit. The wage base limit changes each year; for 2024 it is $168,600, but you should check the current year's limit on the IRS website or your payroll software.

Medicare tax is simpler: 6.2% of all wages with no upper limit. There is no wage cap for Medicare, so you keep paying it on every dollar an employee earns, no matter how high their salary goes.

Here is a concrete example. If an employee earns $3,000 in a pay period and the Social Security wage base has not been reached yet this year, you owe 6.2% × $3,000 = $186 in Social Security tax. You also owe 1.45% × $3,000 = $43.50 in Medicare tax. Your total FICA liability for that employee in that period is $229.50. If that same employee has already earned $168,600 this year, you skip the Social Security calculation and only owe the Medicare tax.

Federal unemployment tax (FUTA) calculation

FUTA is a federal tax that funds unemployment insurance. The standard rate is 6% of the first $7,000 in wages per employee per calendar year. Once an employee has earned $7,000 in a year, you stop calculating FUTA on their wages for the rest of that year.

The calculation is straightforward: 6% × $7,000 = $420 per employee per year. However, most employers receive a credit of up to 5.4% if they pay state unemployment tax on time and in full. This credit brings the effective federal rate down to 0.6% for most employers. The credit is automatic — you do not have to request it — but only if you meet your state's SUTA requirements.

Example: An employee earns $500 in their first pay period. You owe 6% × $500 = $30 in FUTA (before the state credit). By mid-year, that employee has earned $7,100. In the pay period when they cross $7,000, you calculate FUTA only on the wages up to $7,000. Once they have earned $7,000 total for the year, you owe no more FUTA on that employee until the next calendar year.

State unemployment tax (SUTA) calculation

Every state except a few requires employers to pay state unemployment tax. The rate and wage base vary significantly by state. Some states use a flat rate for all employers; others use an experience rating, which means your rate depends on how many former employees have filed for unemployment benefits. New businesses often pay a standard rate until they have a history.

To find your state's rate and wage base, contact your state's labor department or unemployment insurance agency. The wage base is the maximum amount of annual wages subject to SUTA — it ranges from $7,000 in some states to over $40,000 in others. Once an employee reaches that limit in a calendar year, you stop paying SUTA on their wages.

Example: Your state's SUTA rate is 2.5% with a wage base of $10,000. An employee earns $800 in a pay period and has earned $9,500 so far this year. You owe 2.5% × $800 = $20 in SUTA. In the next pay period, they earn another $600, bringing their year-to-date total to $10,100. You owe SUTA only on the $500 that falls within the $10,000 wage base: 2.5% × $500 = $12.50.

How to organize the calculation for each pay period

The easiest way to stay organized is to track each employee's year-to-date wages and explore the tax rates in order. Create a straightforward spreadsheet or use your payroll software to record: the employee's gross wages for the period, their year-to-date total, and then calculate each tax.

For each employee in each pay period, follow this order: (1) Calculate Social Security tax if year-to-date wages have not reached the cap; (2) Calculate Medicare tax on all wages; (3) Calculate FUTA if year-to-date wages have not reached $7,000; (4) Calculate SUTA using your state's wage base and rate. Add all four amounts together to get your total employer payroll tax liability for that employee in that period. Repeat for every employee, then add all employees' taxes together to get your total payroll tax bill for the period.

When and where to deposit employer payroll taxes

You do not pay employer payroll taxes with each paycheck. Instead, you deposit them on a schedule set by the IRS. The schedule depends on how much you owe: if you owe less than $2,500 in a quarter, you can pay with your quarterly tax return. If you owe more, you must deposit semi-weekly or weekly.

The IRS publishes a deposit schedule each year that tells you which days are deposit days. Most employers use the Electronic Federal Tax Payment System (EFTPS) or their bank's bill-pay system to deposit. You will also file Form 941 (Employer's Quarterly Federal Tax Return) each quarter to report the wages you paid and the taxes you withheld and paid.

State unemployment taxes have their own deposit and reporting schedule, which varies by state. Some states require quarterly deposits; others require annual payment. Check with your state's labor department for the exact due dates and payment method.

Common mistakes to avoid

The most common mistake is calculating employer taxes on net wages instead of gross wages. Employer payroll taxes are always based on the full amount paid to the employee before any deductions for income tax, health insurance, or retirement contributions. If an employee's gross pay is $2,000 but $300 is withheld for taxes and benefits, you still calculate employer taxes on $2,000.

Another frequent error is forgetting to stop calculating taxes once an employee hits the wage cap or base limit. Social Security, FUTA, and SUTA all have annual limits. Once an employee reaches the limit for the year, you must stop calculating that tax on their wages — even if they continue to work and earn. The limit resets on January 1 of the next year.

A third mistake is confusing employer taxes with employee withholding. The taxes you withhold from an employee's paycheck (income tax, Social Security, Medicare) are separate from the employer taxes you owe. You must pay both, and they are deposited separately.

Frequently Asked Questions

Do I owe employer payroll taxes on contractor payments?

No. You only owe employer payroll taxes on employees. Contractors are responsible for their own self-employment taxes. If you pay a contractor $1,200, you report it on Form 1099-NEC but owe no payroll taxes. The distinction between employee and contractor is determined by how much control you have over the work and the worker's status; the IRS has specific rules about this.

What if I miss a payroll tax deposit important date?

The IRS charges a penalty based on how late the deposit is — typically 2% to 10% of the unpaid amount. If you realize you missed a deposit, deposit the amount as soon as possible and contact the IRS to explain. Penalties are sometimes reduced if you have a good compliance history. It is better to deposit late than not to deposit at all.

Can I deduct employer payroll taxes from my business income?

Yes. Employer payroll taxes are a business expense and are deductible on your business tax return. This is different from employee income tax withholding, which is not deductible because it belongs to the employee, not your business.

How do I know if my payroll software is calculating taxes correctly?

Check the year-to-date totals against the wage base limits and caps. Verify that Social Security tax stops once an employee reaches the annual limit, that FUTA stops at $7,000, and that SUTA stops at your state's wage base. Also compare your quarterly Form 941 to your payroll records to make sure the totals match.

What happens if an employee works in multiple states?

You owe SUTA in the state where the employee works, not where your business is located. If an employee works in two states, you may owe unemployment tax in both. This is complex and depends on each state's rules; consult your state labor departments or a payroll professional for guidance.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.