UI tax, short for unemployment insurance tax, is a payroll tax that funds unemployment benefits for workers who lose their jobs. It operates as a joint federal-state program: employers pay a federal unemployment tax (FUTA) to the IRS and a separate state unemployment tax (SUTA) to their state workforce agency. In most states, only employers pay UI tax, not employees, though a handful of states require small employee contributions as well.
How the Federal and State Pieces Fit Together
The federal portion, authorized by the Federal Unemployment Tax Act, funds the administrative costs of running unemployment and job service programs in every state. It also pays half the cost of extended unemployment benefits during periods of high unemployment and maintains a fund that states can borrow from when their own reserves run low. The IRS collects FUTA through Form 940, which employers file annually.
The state portion goes directly toward paying unemployment benefits to eligible workers. Each state sets its own tax rates, wage bases, and eligibility rules, which is why SUTA costs can vary dramatically depending on where your business operates.
Who Has to Pay UI Tax
Generally, you owe both federal and state unemployment taxes if either of these is true: you paid wages totaling $1,500 or more in any calendar quarter, or you had at least one employee during any day of a week for 20 weeks in a calendar year (the weeks don’t need to be consecutive). Some states apply different thresholds, so the exact trigger can vary by location.
Independent contractors and self-employed individuals don’t pay UI tax on their own earnings, and their hiring companies don’t owe it on payments made to them. UI tax applies specifically to wages paid to W-2 employees.
FUTA Rates and the 5.4% Credit
The gross FUTA tax rate is 6.0%, but most employers never pay that full amount. If you pay your state unemployment taxes on time and in full, you receive a credit of 5.4%, bringing your effective FUTA rate down to just 0.6%. On the current federal taxable wage base of $7,000 per employee (a figure unchanged since 1983), that works out to a maximum of $42 per employee per year.
The credit can shrink, however, if your state has borrowed money from the federal unemployment trust fund and hasn’t paid it back. When a state carries an outstanding loan balance on January 1 for two consecutive years and doesn’t fully repay by November 10 of the second year, the IRS reduces the credit by 0.3% for that first year, another 0.3% the next year, and so on for each additional year the debt remains. An employer in a state with a 0.3% credit reduction would effectively pay a 0.9% FUTA rate instead of 0.6%, raising the per-employee cost from $42 to $63. These credit reductions are reported on Schedule A of Form 940.
How States Set Your SUTA Rate
State unemployment tax rates aren’t one-size-fits-all. They’re determined through a system called experience rating, which works like insurance: the more unemployment claims your former employees file against your account, the higher your rate goes. Fewer claims mean a lower rate. The goal is to distribute the cost of unemployment benefits fairly among the employers whose workforce turnover actually generates those claims, and to give employers a financial incentive to retain workers.
New employers typically start at an assigned initial rate (sometimes called a “new employer rate”) that varies by state and sometimes by industry. After you’ve been in business long enough to build a claims history, usually two to three years, your rate adjusts based on your actual experience. States use different formulas to calculate this. Some compare the benefits charged to your account against your total payroll (a benefit ratio). Others track the cumulative balance of your contributions minus benefits paid, divided by your payroll (a reserve ratio). The specifics differ, but the principle is the same: stable employers with few layoffs pay less.
Taxable Wage Bases Vary Widely
Both FUTA and SUTA taxes apply only up to a set amount of each employee’s annual wages, called the taxable wage base. For FUTA, that ceiling is $7,000. Once you’ve paid an employee $7,000 in a calendar year, no additional FUTA tax is owed on their wages for the rest of that year.
State wage bases are a different story. They range from $7,000 in several states to over $78,000 in the highest-cost states. A higher wage base means you’re paying state unemployment tax on a larger share of each employee’s earnings, which can significantly increase your total UI costs. Your state workforce agency publishes the current wage base and your assigned tax rate, usually in an annual rate notice mailed before the start of each year.
How UI Tax Affects Your Payroll
Because UI tax is primarily an employer obligation, it doesn’t show up as a deduction on most employees’ pay stubs. As a business owner, you budget for it alongside other employer-side payroll costs like the employer share of Social Security and Medicare taxes. FUTA is calculated and reported annually on Form 940, though you may need to make quarterly deposits if your accumulated FUTA liability exceeds $500 in a given quarter. State unemployment taxes follow each state’s own deposit and reporting schedule, which is often quarterly.
For employees, UI tax matters most when you’re out of work. The taxes your former employer paid into the system are what fund the weekly unemployment benefits you can collect while searching for a new job. Benefit amounts, duration, and eligibility requirements are all set at the state level, which is why unemployment checks vary so much depending on where you live and what you earned.