How State Unemployment Tax Works for Employers: Rates and Filing

State unemployment tax for employers is a quarterly payroll tax that funds benefits for workers who lose jobs through no fault of their own, and almost every business with employees owes it. You become liable once you pay $1,500 or more in wages during any calendar quarter, or employ at least one person for part of a day in 20 different weeks of the year. Cross either line and you owe the tax for the full calendar year and typically the next one as well.¹ The rate you pay, the wages it applies to, and the filing deadlines are all set by the state, not the federal government.

Who Has to Pay

The $1,500-in-a-quarter and 20-weeks-with-one-employee tests are the general rules that trigger both the federal unemployment tax (FUTA) and, in most states, the corresponding state tax.¹ These thresholds decide whether you owe the tax at all, not how much. Once you cross one, you pay on every dollar of covered wages up to the state’s taxable wage base for the entire year. There is no partial-year exemption for businesses that hit the threshold mid-year.

A few employer types work under different tests:

Agricultural employers owe the tax only if they pay $20,000 or more in cash wages during a calendar quarter or employ ten or more workers for part of a day in 20 different weeks.²
Section 501(c)(3) nonprofits become liable once they employ four or more people for at least 20 weeks in a calendar year. Qualifying nonprofits can also choose to reimburse the state fund dollar-for-dollar for benefits paid to former employees instead of paying a rate-based contribution. That saves money for organizations with few layoffs but creates open-ended liability when a large layoff happens.³⁴
Household employers who hire nannies, housekeepers, or home health aides owe federal unemployment tax once they pay $1,000 or more in cash wages to household workers in any calendar quarter. State thresholds vary. FUTA on household employment is reported on Schedule H of the personal income tax return.⁵

How Your Tax Rate and Total Cost Are Set

The Taxable Wage Base

Each state sets a taxable wage base, the maximum amount of an employee’s annual earnings the state tax applies to. Federal law sets a floor of $7,000, matching the FUTA base, but most states go higher.⁶ For 2026, bases range from $7,000 in some states to $68,500 in Washington, with several others above $50,000. Once an employee’s year-to-date earnings cross the cap, you stop paying state tax on that person for the rest of the year.

The base drives your total cost as much as the rate does. A 2.0% rate on a $7,000 base is $140 per employee per year. That same rate on a $50,000 base is $1,000 per employee. If you’re expanding into a new state, check the wage base before you budget.

Experience Rating

Your actual state tax rate reflects your history with unemployment claims. States assign each employer an experience rating based on how many former employees have collected benefits charged to the account. More claims mean a higher rate; fewer claims mean a lower one.⁷

Each year the state recalculates your rate through a specified computation date and mails a rate notice before the new year begins. That rate stays fixed for all four quarters regardless of what happens to payroll mid-year.⁸ Read the notice carefully when it arrives. Errors in benefit charges happen, and fixing them before the rate takes effect is far easier than disputing them later.

New Employer Rates

Businesses without enough history for an experience rating pay a default new employer rate. Federal law sets a floor of 1.0%, and most states assign new employers something between 1.0% and 3.4% depending on industry.⁷ Construction and staffing companies often get higher default rates because their industries generate more claims. The initial rate typically applies for one to three years until the state has enough data to calculate an experience-based one.⁸

Some states let employers make voluntary payments to improve their experience rating and lower the assigned rate. Federal law requires any such payment to be made within 120 days of the start of the rate year to count.⁷ Check your rate notice for details as soon as it arrives, because the window is short.

Which State Gets Paid for Multi-State Employees

You pay state unemployment tax to one state per employee, not to every state where they happen to work. The Department of Labor uses a four-part localization test, applied in order:⁹

Localization of service. If the employee works entirely in one state, or primarily in one with only temporary or incidental work elsewhere, that state gets the tax.
Base of operations. If work isn’t localized, the tax goes to the state where the employee has a fixed base: the place they report to, receive instructions from, or regularly return to between assignments.
Direction and control. If there’s no base of operations, the tax goes to the state where the employer supervises the work, as long as the employee does at least some work there.
Residence. If none of the above apply, the tax goes to the employee’s state of residence, provided they do some work there.

You only move to the next test if the previous one doesn’t resolve the question. For most employees, including most remote workers, the first or second test answers it.

Filing Quarterly Returns

State unemployment tax is reported and paid quarterly. Each quarter you file a contribution report listing every employee, their Social Security number, total wages paid, and the portion of those wages within the taxable wage base. You apply your assigned rate to the taxable wages to get the amount due.

To file, you need your state employer account number (assigned when you first registered with the state labor department), your rate notice for the current year, and detailed payroll records. Most states require or strongly prefer electronic filing through an online employer portal, which usually validates data on submission and generates a confirmation.

The standard deadline is the last day of the month after each quarter closes: April 30, July 31, October 31, and January 31. Some states set slightly earlier dates, so confirm yours rather than assuming the federal schedule.¹⁰

A common mistake is confusing total wages with taxable wages. You report all gross wages paid during the quarter, but you only owe tax on the portion that hasn’t already exceeded the state’s wage base for each employee. If someone earned $40,000 through the first two quarters and the state’s wage base is $45,000, only $5,000 of their third-quarter wages are taxable even if they earned $20,000 that quarter.

Keep all employment tax records for at least four years after filing the fourth-quarter return for the year, including quarterly reports, rate notices, payroll registers, and payment confirmations.¹¹ Those records are your defense in an audit and your only way to challenge an incorrect benefit charge that inflates your rate years later.

Why On-Time State Payment Protects Your Federal Tax

FUTA is a flat 6.0% tax on the first $7,000 of wages per employee. Employers who pay their state unemployment taxes in full and on time get a credit of up to 5.4% against that federal rate, dropping the effective FUTA cost to 0.6% per employee.⁶

Miss the state deadline and you lose part or all of that credit, effectively raising your federal tax from 0.6% to as high as 6.0% on the same wages. The state payment must be made by the Form 940 filing deadline (January 31 of the following year) to preserve the credit for that tax year.¹² FUTA is reported annually on Form 940, but deposits are required quarterly whenever cumulative liability exceeds $500.

There’s a second way the credit can shrink even if you paid on time. When a state borrows from the federal unemployment trust fund and fails to repay the loan within two years, employers in that state lose part of the FUTA credit. The reduction starts at 0.3% in the first year and grows by another 0.3% for each additional year the debt remains unpaid. A 0.9% credit reduction raises your effective FUTA rate from 0.6% to 1.5% per employee. The IRS publishes the list of credit reduction states each November, and any additional FUTA liability is due January 31 of the following year.¹³

Responding to Unemployment Claims Protects Your Rate

When a former employee files for benefits, the state sends you a notice asking why the person left and whether you dispute the claim. Response windows are tight, often 10 to 14 days, and missing them usually means the state decides without your input. That defaulted claim gets charged to your account and pushes your rate higher.

You generally have grounds to contest a claim in three situations: the employee was fired for serious misconduct such as theft, safety violations, or falsifying records; the employee voluntarily quit without good cause; or the employee is refusing suitable work while collecting benefits. Contesting claims for employees let go over poor performance, minor policy issues, or ordinary business slowdowns usually fails, because those are the situations unemployment insurance exists to cover.

Documentation decides most protests. Written warnings, signed policy acknowledgments, and termination letters that clearly state the reason for separation are the records that matter. Without contemporaneous documentation, the state will almost always side with the claimant.

What Happens If You File or Pay Late

Late filing or missed payments trigger two direct costs. States charge interest on the unpaid balance, typically 7% to 11% a year depending on the state. Most also impose a flat penalty for each late or missing quarterly report, ranging from around $50 per report to $1,000 or more for repeated failures.

The bigger consequence is the FUTA credit loss described above. For a business with 50 employees, losing the full 5.4% credit means an extra $18,900 in federal tax on the first $7,000 of each employee’s wages, which usually dwarfs the state interest charges.⁶

Two Traps That Create Back Liability

Misclassifying Workers as Contractors

State unemployment tax applies to employees, not independent contractors. Misclassifying someone who functions as an employee is one of the most expensive payroll mistakes a business can make. If a state audit reclassifies your contractors, you owe back unemployment taxes for every quarter those workers should have been covered, plus interest and penalties. Misclassification also triggers back federal unemployment tax, Social Security and Medicare taxes, and potentially income tax withholding.

States actively audit industries where contractor arrangements are common: construction, trucking, home health care, and technology. If you control when, where, and how someone does the work, that person is likely your employee for unemployment tax purposes regardless of what the contract says.

Buying or Selling a Business

When ownership changes hands, the seller’s unemployment experience often follows the workforce. Federal law doesn’t require states to transfer experience ratings, but most states allow or require it depending on the circumstances.¹⁴ In a total acquisition where the seller ceases operations, the full experience record typically transfers to the buyer. In a partial acquisition of an identifiable division, the experience transfers proportionally by payroll. Once transferred, that experience permanently belongs to the buyer.

If you’re buying, ask for the seller’s current tax rate and benefit charge history before closing. A seller with a high experience rating hands you that liability along with the assets. During the transfer year, the state may assign you the seller’s rate, a new employer rate, or a blended rate.

Federal law also prevents businesses from shedding a bad experience rating by moving operations to a shell company. The SUTA Dumping Prevention Act requires every state to transfer unemployment experience when a business moves to a related entity under common ownership, management, or control. States must deny a lower rate to any buyer who acquired a business primarily to obtain a reduced rate, and must impose civil and criminal penalties on anyone who knowingly participates in or advises these schemes.¹⁵

Three States Where Employees Also Contribute

In most states, unemployment insurance is funded entirely by employer contributions and workers pay nothing. Alaska, New Jersey, and Pennsylvania are the exceptions. Employers there must withhold a small employee contribution (generally under 1%) in addition to the employer share. The rates are low, but failing to withhold and remit creates the same compliance problems as missing the employer portion. If you hire in any of those states, your payroll system needs to handle the withholding from day one.

1
Office of the Law Revision Counsel. 26 USC 3306 – Definitions
2
U.S. Department of Labor. Unemployment Insurance Tax Topic
3
Office of the Law Revision Counsel. 26 USC 3309 – State Law Coverage of Services Performed for Nonprofit Organizations
4
U.S. Department of Labor. Unemployment Insurance Program Letter No. 1247
5
Internal Revenue Service. Publication 926 (2026), Household Employer’s Tax Guide
6
Internal Revenue Service. Topic No. 759, Form 940 – Employers Annual Federal Unemployment (FUTA) Tax Return
7
U.S. Department of Labor. Experience Rating – Unemployment Insurance Conformity Requirements for State UI Laws
8
Bureau of Labor Statistics. The Cost of Layoffs in Unemployment Insurance Taxes
9
U.S. Department of Labor. Unemployment Insurance Program Letter No. 20-04 – Attachment I
10
Internal Revenue Service. Employment Tax Due Dates
11
Internal Revenue Service. Employment Tax Recordkeeping
12
Internal Revenue Service. 2025 Instructions for Form 940
13
Internal Revenue Service. FUTA Credit Reduction
14
U.S. Department of Labor. Transfers of Experience – UIPL No. 29-83, Change 3
15
GovInfo. SUTA Dumping Prevention Act of 2004