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If you run payroll for a U.S. business, payroll taxes are one of the few line items you can't afford to get wrong. Miss a deposit, misclassify a worker, or apply the wrong state rate, and the IRS or your state labor agency will notice long before your accountant does. Yet most employer resources either drown you in tax code citations or oversimplify to the point of being useless when you actually sit down to run payroll.

This guide breaks down exactly what U.S. payroll taxes employers are responsible for at the federal, state, and local level, how each one is calculated, and what happens when a deadline slips. Whether you're hiring your first W-2 employee or auditing your existing process, you'll come away knowing precisely what you owe, when you owe it, and how to keep your business compliant across every jurisdiction you operate in.

What Payroll Taxes Do Employers Pay?

As a U.S. employer, you're generally on the hook for taxes at three levels, and each one funds something different:

• Federal payroll taxes: Social Security, Medicare, and federal unemployment insurance.
• State payroll taxes: state unemployment insurance and, in many states, income tax withholding.
• Local payroll taxes: city or county wage taxes, transit taxes, and school district levies in specific jurisdictions.

Some of these you withhold from employee wages; others you pay entirely out of pocket as the employer. Understanding which is which is the difference between accurate payroll and a costly correction later.

Federal Payroll Taxes: FICA and FUTA

FICA: Social Security and Medicare

The Federal Insurance Contributions Act (FICA) is the tax that funds Social Security and Medicare, and it's a shared cost. For the current tax year, employers and employees each pay 6.2% of wages toward Social Security, up to the annual Social Security wage base, plus 1.45% each toward Medicare on all wages with no cap. That brings the combined FICA rate to 7.65% for the employer and 7.65% for the employee. Employers must also withhold an additional 0.9% Medicare surtax on employee wages above $200,000 in a calendar year, though this additional amount is not matched by the employer.

FUTA: Federal Unemployment Tax

The Federal Unemployment Tax Act (FUTA) is paid entirely by employers, not employees. The statutory rate is 6.0% on the first $7,000 of each employee's wages per year. Most employers who pay their state unemployment taxes on time and in full receive a credit of up to 5.4%, bringing the effective FUTA rate down to 0.6%. If your state has an outstanding federal unemployment loan balance, that credit can be reduced, which raises your effective FUTA rate, a detail that's easy to miss if you're not tracking your state's credit-reduction status each year.

State Payroll Taxes

Do employers pay state payroll taxes? In nearly every case, yes. The main components are:

• State unemployment insurance (SUTA/SUI): Funded almost entirely by employers, with your rate based on an "experience rating" tied to your history of unemployment claims. New employers typically start at a standard introductory rate until they build a claims history.
• State income tax withholding: Withheld from employee paychecks in most, but not all, states, and remitted according to each state's own filing schedule.

Wage bases and rates vary widely by state, and a handful of states have no state income tax at all. If you employ people across multiple states, each state effectively runs its own parallel payroll tax system, with its own registration requirements, wage base, and filing calendar.

Local Payroll Taxes

Local payroll taxes are the layer employers most often overlook, largely because they only apply in specific cities, counties, or school districts rather than nationwide. Examples include municipal wage taxes in cities like Philadelphia and New York City, local earned income taxes across much of Pennsylvania, occupational license taxes in parts of Kentucky and Ohio, and transit district taxes such as those funding public transportation in the Portland, Oregon area. If you have even one employee working in or living in one of these jurisdictions, you may have a local withholding and remittance obligation on top of your federal and state duties.

How Are Payroll Taxes Calculated?

Calculating payroll tax liability generally follows the same sequence for every pay run:

• Start with the employee's gross wages for the pay period.
• Apply FICA (Social Security and Medicare) to both the employee withholding and the employer match.
• Apply federal income tax withholding based on the employee's Form W-4 elections.
• Apply state income tax withholding, where applicable, using that state's own withholding tables.
• Apply any local tax withholding required by the employee's work or residence location.
• Track FUTA and SUTA liability separately, since these are employer-paid and calculated against each employee's wage base rather than every pay period.

Federal, State, and Local Payroll Taxes at a Glance

Deposit Deadlines and What Happens If You Miss One

Employers deposit federal payroll taxes on either a monthly or semiweekly schedule, determined by the total tax reported during a prior lookback period, and report the totals quarterly on Form 941. Deposits are made electronically through the Electronic Federal Tax Payment System (EFTPS) rather than mailed with the return.

Missing a deposit deadline triggers the IRS Failure-to-Deposit penalty, which scales with how late the payment is: roughly 2% for deposits one to five days late, 5% for six to fifteen days late, 10% for more than fifteen days late, and up to 15% once the IRS sends a formal notice and the balance remains unpaid. State and local agencies layer on their own penalty and interest structures for late unemployment or withholding deposits, so a single missed deadline can generate penalties from more than one jurisdiction at once.

Where Payroll Tax Compliance Gets Complicated

Payroll tax obligations rarely stay simple for long. A few situations that consistently trip up employers:

• Hiring across state lines, which means registering for withholding and unemployment accounts in each new state.
• Employees who live in one jurisdiction and work in another, which can trigger reciprocity rules or dual local tax obligations.
• Rate changes that take effect at the start of each tax year, including new wage bases and updated withholding tables.
• Credit-reduction states, where a state's unpaid federal unemployment loan raises the effective FUTA rate for every employer in that state.

This is exactly the layer of complexity that payroll tax compliance software is built to absorb. Rather than manually tracking wage bases, rate changes, and filing calendars across every jurisdiction you operate in, a purpose-built payroll management software platform applies current federal, state, and local rules automatically at the moment payroll is run, and keeps a clear audit trail if a tax agency ever asks how a figure was calculated.

Frequently Asked Questions

What payroll taxes do employers pay?

Employers are generally responsible for federal FICA taxes (Social Security and Medicare, matched dollar-for-dollar with employee withholding), federal unemployment tax (FUTA), state unemployment tax (SUTA), and, depending on location, state and local income tax withholding.

What are the federal payroll taxes?

The two core federal payroll taxes are FICA, which funds Social Security and Medicare, and FUTA, which funds the federal unemployment insurance system. FICA is shared between employer and employee; FUTA is paid solely by the employer.

What is FICA payroll tax?

FICA stands for the Federal Insurance Contributions Act. It combines a 6.2% Social Security tax (up to the annual wage base) and a 1.45% Medicare tax (with no wage cap), each matched by the employer, for a combined employer rate of 7.65%.

Do employers pay state payroll taxes?

Yes. Nearly all employers pay state unemployment tax (SUTA), and most states also require employers to withhold state income tax from employee wages, though rates, wage bases, and filing schedules vary by state.

What are local payroll taxes?

Local payroll taxes are wage, earned income, occupational, or transit taxes imposed by a specific city, county, or school district rather than a state or the federal government. They apply only where an employee lives or works within that jurisdiction.

How are payroll taxes calculated?

Payroll taxes are calculated by applying each applicable rate, FICA, federal and state income tax withholding, and any local tax, to an employee's gross wages for the pay period, while employer-only taxes like FUTA and SUTA are tracked against that employee's annual wage base.

Who pays Social Security and Medicare taxes?

Both the employer and the employee pay Social Security and Medicare taxes under FICA. Each party contributes 6.2% toward Social Security up to the wage base and 1.45% toward Medicare on all wages, for a combined 15.3% total.

What is the difference between FUTA and SUTA?

FUTA is a federal tax paid only by employers on the first $7,000 of each employee's wages, at an effective rate most employers reduce to 0.6% through state tax credits. SUTA is a state-level tax, also generally paid by employers, with a rate based on each employer's individual claims history and a wage base that varies significantly by state.

When do employers deposit payroll taxes?

Federal payroll tax deposits are made monthly or semiweekly, depending on the employer's total tax liability during a prior lookback period, and reported quarterly on Form 941. State and local deposit schedules are set independently by each agency.

What happens if an employer misses a payroll tax deadline?

A missed federal deposit triggers the IRS Failure-to-Deposit penalty, which increases the longer the deposit remains late, plus interest on the unpaid balance. State and local agencies can impose their own separate penalties, so a single missed deadline can result in multiple penalty assessments.

Staying Compliant Without the Guesswork

Payroll tax requirements shift every year, across every level of government, and rarely at the same time. For U.S. employers, the real risk usually isn't a single missed calculation; it's the accumulation of small gaps: a new state registration that never got filed, a local jurisdiction that got added after an employee moved, or a wage base that wasn't updated at the start of the year.

If your current process depends on spreadsheets, manual lookups, or a patchwork of tools, it may be worth having a conversation about what a dedicated payroll tax software platform could take off your plate. PayProNext is built specifically for U.S. employers navigating federal, state, and local payroll tax obligations in one place. If you'd like to see how it fits your current setup, our team is happy to walk through it with you, no pressure, just a clear look at where it could help.