A simple guide to calculating payroll taxes

How do you calculate payroll taxes?

You calculate payroll taxes by finding gross pay, subtracting pre-tax deductions, then withholding FICA, federal income tax, and any state or local taxes.

• Payroll taxes fund programs like Social Security and Medicare. So both employers and employees share part of the cost.
• The core steps are the same each pay period. As a result, the task gets easier once you know the formula.
• Rates and limits change over time. For this reason, always confirm figures with the IRS and your state agency.

Learning how to calculate payroll taxes can feel hard at first. Still, it is a key business task that helps both companies and individual taxpayers.

In fact, Statista reports that the United States recorded a total revenue of $1.71 trillion collected from payroll taxes in 2024. As a result, that revenue helped support economic stability that year.

The process can be tedious. However, it gets simpler once you know the steps. So this guide walks you through the calculations to help you stay accurate and compliant.

What are payroll taxes?

Payroll taxes are required contributions from wages and salaries. Employers often pay a matching share. Together, these taxes fund social insurance programs.

Both sides pay these taxes, which come straight out of a paycheck. In the U.S., Social Security and Medicare are the main payroll taxes. They sit alongside state and federal unemployment taxes.

These taxes support retirees, the unemployed, and disabled workers. So clear payroll management benefits everyone. No wonder payroll services are in high demand today.

Types of payroll taxes

Payroll taxes fall into several categories. Together, they fund government services and social programs.

As noted, these taxes split into two main types:

• Taxes paid only by the employer, and
• Taxes paid by both the employer and the employee.

Here is a closer look at the common types of payroll taxes.

Taxes paid by both employee and employer

These taxes form the Federal Insurance Contributions Act (FICA). In short, the employer and the employee each pay an equal share.

• Social security tax:

This funds benefits for retirees, survivors of deceased employees, and people with disabilities. It uses an annual wage base and rate that can change each year. For 2026, for example, the Social Security wage base is $184,500.

• Medicare tax:

As the name suggests, this funds Medicare. It covers health care for people aged 65 and over, as well as those with disabilities.

Unlike Social Security, Medicare has no wage base limit. In addition, workers who earn above a set threshold pay an extra Medicare tax, which they cover alone.

Taxes paid by the employer only

These taxes come from the employer and are not taken from a paycheck:

• Federal Unemployment Tax (FUTA):

This tax funds federal and state unemployment programs. So it offers support to workers who lose their jobs.

• State Unemployment Tax (SUTA):

Like FUTA, this is a state-level tax that funds a state unemployment program. However, the rate varies a lot by state. It often depends on the employer’s history of unemployment claims.

Other payroll-related taxes

Sometimes other taxes get added on top of the main federal taxes. These include:

• Federal Income Tax Withholding:

This is not a payroll tax like FICA. Still, federal law requires employers to withhold income tax from wages.

An employee’s Form W-4 sets how much income tax to withhold. In effect, it prepays part of their total tax for the year.

• State and Local Income Tax Withholding:

Some states and cities also require employers to withhold local or state income tax. Rates and rules vary by location.

• State Disability and Family Leave Insurance:

States such as New York and California run payroll-funded programs. These support paid family leave and short-term disability benefits.

How to calculate your payroll taxes

Calculating payroll taxes is a multi-step task. It blends federal, state, and sometimes local taxes.

Not surprisingly, technology has changed how we handle this. For example, many teams now use professional tax software.

The formulas and rates can change. So always use the latest figures from the Internal Revenue Service (IRS) and your state tax agency. Here is a general guide to the steps.

1. Determine total gross pay

Start with the employee’s gross pay. This is their total earnings for the pay period before any taxes or deductions.

• Hourly employees: Gross Pay = (Hours worked) x (Hourly rate)
• Salaried employees: Gross Pay = (Annual salary) / (Number of pay periods in the year)

2. Subtract your pre-tax deductions

Some deductions come out before taxes. So they lower taxable income and the amount owed.

Common examples include:

• 401(k) contributions or other retirement plans
• Health insurance premiums and Health Savings Account (HSA)
• Flexible Spending Account (FSA) contributions

The taxable wage base is gross pay minus these pre-tax deductions.

3. Withhold FICA taxes

As noted, FICA taxes include Social Security and Medicare. Both the employee and the employer pay a share.

• Social security tax:

The rate is 6.2% for both the employee and the employer. It applies only to wages up to the annual Social Security wage base, which is $184,500 for 2026.

Once an employee’s yearly earnings pass that base, you stop withholding Social Security tax for the rest of the year.

Calculation formula: (Taxable wages) x 0.062

• Medicare tax:

The rate is 1.45% for both the employer and the employee. Unlike Social Security, it has no wage base limit, so it applies to all wages.

However, an extra 0.9% tax applies to wages above a set threshold ($200,000 for single filers). The employee covers this part alone.

Calculation formula: (Taxable wages) x 0.0145

• Total FICA tax:

FICA tax is the combined total of Social Security and Medicare. The employer withholds the employee’s share and adds a matching portion.

4. Calculate and withhold federal income tax

The employee pays federal income tax alone, unlike shared FICA taxes. However, the employer must withhold it and send it to the IRS.

The amount depends on gross pay and the Form W-4 details. So the IRS sets two main methods for the calculation.

• The wage bracket method:

This method uses tables from IRS Publication 15-T (Circular E) to find the right amount. The result is based on gross pay, filing status, and number of dependents.

• The percentage method:

This method uses a formula and tables for a more exact amount. As a result, it is the standard for computerized payroll systems.

5. Calculate and pay employer-only taxes

The two major federal taxes paid only by the employer (and not taken from a paycheck) are:

• Federal Unemployment Tax (FUTA):

This tax funds the federal unemployment program. The standard rate is 6.0% on the first $7,000 of each employee’s wages.

However, employers can get a credit of up to 5.4% for paying state unemployment taxes. So the effective FUTA rate can drop to as low as 0.6%.

Calculation formula: (First $7,000 of wages) x 0.006 (varies with the applicable rate)

• State Unemployment Tax (SUTA):

This state-level tax funds the state’s unemployment insurance program. In turn, it gives short-term support to workers who lose their jobs.

6. Withhold local and state taxes

Finally, calculate and withhold any state and local taxes. These can include:

• State income tax
• Local income taxes
• State payroll taxes that fund disability or family leave insurance

SUTA rates and wage base limits depend heavily on the state. They also depend on the employer’s unemployment claims history.

How to secure payments for payroll taxes

Your financial health is about more than paying bills on time. It also means protecting sensitive employee and company data.

Government-backed systems help here. For example, the Electronic Federal Tax Payment System (EFTPS) keeps your payroll tax payments secure from start to finish.

You may also outsource a payroll specialist who adds security for these payments. Pair this with strong internal controls and modern software. As a result, your tax duties stay safe and accurate.

Managing payroll taxes more effectively through outsourcing

Do payroll taxes feel complex? Outsourcing this task is a smart way to simplify the work. In fact, it is one of the fastest-growing trends in the market today. Many firms weigh the pros and cons of payroll outsourcing before they decide.

By hiring a professional payroll service provider, you get timely and accurate filings. In addition, you stay compliant with changing rules and protect sensitive financial data.

This approach saves time and lowers the risk of penalties. So you can focus on growth with confidence. For broader support, some firms also look at outsourcing payroll to BPO companies or wider accounting outsourcing and financial services outsourcing.

Frequently asked questions (FAQs)

What is the difference between payroll tax and income tax?

Payroll taxes fund specific programs like Social Security and Medicare. Both the employer and employee share them. Income tax, by contrast, funds general government spending and is paid by the employee. So the two serve different goals.

What percentage is FICA tax?

FICA is 7.65% for each side. This breaks down into 6.2% for Social Security and 1.45% for Medicare. However, higher earners also pay an extra 0.9% Medicare tax on wages above the threshold.

Do employers pay part of payroll taxes?

Yes, employers pay a large share. For example, they match the employee’s FICA contribution. In addition, they cover FUTA and SUTA on their own. So payroll taxes are a shared cost.

Can I outsource payroll tax calculations?

Yes, and many businesses do. A payroll provider handles the math, the filings, and the deadlines. As a result, you reduce errors and free your team for core work.