To file a SUI form, you first register a state unemployment tax account with your state workforce agency, then submit a quarterly wage and tax report four times a year showing what you paid each employee, how much of that was taxable, and the tax due at your assigned rate. Every state runs its own program, so form names and portals differ, but the categories are the same: a one-time registration to open your account, quarterly wage and tax reports, and a separation notice each time an employee leaves. Filing accurately and on time also protects the federal FUTA credit that keeps your federal unemployment tax at 0.6% instead of 6.0%.
Register Your State Unemployment Tax Account First
You cannot file a quarterly report until the state has issued you an account number, so registration is step one the moment you become liable. Under federal law, you are an employer subject to FUTA — and by extension to state unemployment tax — if you paid $1,500 or more in wages during any calendar quarter in the current or prior year, or employed at least one person for some part of a day in 20 different weeks during the current or prior year.1Office of the Law Revision Counsel. 26 USC 3306 – Definitions Most states mirror those thresholds or set lower ones, and household and agricultural employers often have separate rules. Only the employer pays SUI tax; it is not withheld from employee wages.2Internal Revenue Service. Federal Unemployment Tax
Before you register, have your Federal Employer Identification Number ready — the nine-digit number the IRS issues through Form SS-4.3Internal Revenue Service. About Form SS-4, Application for Employer Identification Number (EIN) The registration form asks for your business structure, the date you first paid wages, ownership details, the nature of your business, and your FEIN. Most states let you register online through the workforce agency’s employer portal, and some fold SUI registration into a combined business registration that also covers state income tax withholding.
Once the agency processes the registration, you receive your state account number (sometimes called an SUI account number or State Employer Identification Number) and your assigned tax rate. New employers usually get a standard starter rate rather than an experience-based rate, generally in the range of 2.7% to 4.1% depending on the state and industry. Your rate adjusts in later years based on your claims history.
What to Gather Before You File
Every quarterly filing pulls from the same set of data. Assemble these items before opening the form:
- Your FEIN and your state unemployment account number.
- Full legal name and Social Security number for every person you paid wages to during the quarter.
- Gross wages for each employee: total compensation before deductions, including bonuses, commissions, and the cash value of non-cash benefits.
- Taxable wages for each employee: the portion of earnings that falls within your state’s taxable wage base. States must set the wage base at or above the federal FUTA floor of $7,000 per employee per year, and most set it higher. Once an employee’s year-to-date earnings pass the wage base, you stop paying SUI tax on that person for the rest of the calendar year.1Office of the Law Revision Counsel. 26 USC 3306 – Definitions
- Total hours worked for each employee. Many states require this for workforce statistics even though it doesn’t drive the tax.
- Your assigned contribution rate from the annual rate notice.
The taxable wage base is where first-time filers stumble. If your state uses a $7,000 wage base, an employee earning $50,000 a year produces $7,000 in SUI-taxable wages — the first $7,000 paid that calendar year — and the remaining $43,000 is exempt. Track each employee’s year-to-date taxable wages cumulatively across quarters so you don’t overpay early or underpay later.
Completing the Quarterly Wage Report
The quarterly wage report is the core SUI form. Names and numbers vary by state — Pennsylvania calls it Form UC-2, New York uses NYS-45, and Texas labels it the Employer’s Quarterly Report — but they all collect the same data: total wages paid, taxable wages, the number of employees, and the tax due. You’ll find your state’s version on the workforce agency’s website or inside its online employer portal.
p>Most reports have two parts. The summary section captures total wages, total taxable wages, and the tax calculation for the quarter. The detail section lists each employee by name and Social Security number with individual wages. Some states put both on a single form; others use a companion schedule, such as Pennsylvania’s UC-2A, for the employee-level detail.
Calculating the tax is straightforward: multiply your total taxable wages for the quarter by your assigned contribution rate. If your rate is 2.7% and you paid $30,000 in taxable wages during the quarter, your tax is $810. The form walks you through this math in a few lines. Verify that you’ve excluded any wages above the wage base for employees who hit the cap earlier in the year.
A few errors cause most of the trouble: transposing Social Security numbers, entering gross wages in the taxable-wages field, and forgetting to zero out employees who already exceeded the wage base in a prior quarter. Even if no wages are taxable for the quarter — because every employee cleared the wage base earlier in the year — you still file the report showing zero tax due.
Quarterly Filing Deadlines
Quarterly reports and payments are due on the last day of the month following the end of each calendar quarter:4Internal Revenue Service. Employment Tax Due Dates
- Q1 (January–March): April 30
- Q2 (April–June): July 31
- Q3 (July–September): October 31
- Q4 (October–December): January 31
When a due date falls on a weekend or holiday, the deadline shifts to the next business day. Put all four dates on your payroll calendar at the start of each year.
How to Submit the Form
Nearly every state offers an online employer portal for filing quarterly reports and making payments. Many states now require electronic filing once you cross a certain employee count, with 25 or more employees a common threshold. Even where paper filing is still permitted for smaller employers, the portal is faster and returns an instant confirmation number you can save as proof of filing.
Larger employers with hundreds or thousands of employees often upload wage data in bulk using standardized file formats such as ICESA or EFW2. Check your state portal for the accepted specifications and run the state’s validation tool on a test file before the deadline.
If you file by mail, send the completed form and payment to the address on the form or in your state’s instructions. Certified mail with return receipt gives you proof of the filing date; a regular postmark may not resolve a dispute if the agency claims late arrival. Paper filers typically pay by check.
After submission, save whatever confirmation the system provides. Most portals display a confirmation number and let you download a receipt. For paper filings, the returned receipt or cancelled check serves the same purpose. Store these with your copies of the report.
Fixing a Report After You File
If you find an error — a misreported Social Security number, wrong wage amounts, or an employee listed under the wrong quarter — file an amended return. Each state has its own amendment process, usually available in the same employer portal where you filed the original. Some states use a separate amendment form; others let you submit a corrected version of the original. File the correction as soon as you spot the error. Waiting until the next quarter compounds the problem and may trigger extra penalties.
Separation Notices When Employees Leave
When an employee separates from your company through layoff, resignation, termination, or retirement, most states require a separation notice. It records who left, when, and why, and the workforce agency uses it to decide whether the former employee qualifies for unemployment benefits. The reason you provide directly affects whether any resulting benefit charges land on your account.
Timing is tight. States typically require the notice within a narrow window, often within 24 hours of the separation or within a set number of days after the employee files a claim. Late or incomplete notices can result in a determination made without your input, which usually means benefits get charged to your account by default.
Be specific about the reason. “Laid off due to lack of work” is straightforward and won’t hurt your experience rating. A discharge for misconduct or a voluntary quit calls for supporting details: the specific policy violated, dates of warnings, the final incident, and any documentation. Vague language like “not a good fit” gives the agency nothing to work with and raises the odds the claim is approved and charged to you.
Responding to a Benefit Claim
When a former employee files for unemployment, the state sends you a claim notice asking for your side. You typically have 10 to 15 days to respond. Ignoring the notice is one of the most expensive mistakes an employer can make. Silence is treated as agreement that the employee is eligible, and the resulting benefit charges raise your tax rate for years.
Your response should state the specific reason for separation, relevant dates, documentation of any warnings or policy violations, and information about any payments the employee received at separation such as vacation payout, severance, or pension. If the agency rules against you, an appeal process follows, usually with a 30-day written appeal window from the determination date.
Why On-Time Filing Matters: The FUTA Credit and Penalties
The federal government imposes its own unemployment tax under FUTA at a flat 6.0% on the first $7,000 of wages paid to each employee per year.5Office of the Law Revision Counsel. 26 USC 3301 – Rate of Tax That would be $420 per employee annually, but employers who pay state unemployment taxes on time earn a credit of up to 5.4%, dropping the effective FUTA rate to 0.6%, or $42 per employee.6Employment & Training Administration. Unemployment Insurance Tax Topic
The credit is not automatic. You earn it by filing quarterly state reports and paying the state tax by each deadline. If your state has outstanding federal loans for its unemployment trust fund that remain unpaid for two or more consecutive January 1 dates, the credit gets reduced, meaning employers in that state pay a higher effective FUTA rate.7Employment & Training Administration. FUTA Credit Reductions The Department of Labor publishes a list of potential credit-reduction states each year, so check before completing your annual Form 940. Form 940 is due January 31 for the prior calendar year, and you’ll need your state quarterly reports to complete it accurately.
Missing a state deadline hurts two ways. States charge penalties for late filing (a flat dollar amount per delinquent quarter, a daily penalty, a percentage of unpaid tax, or some combination), plus monthly interest on unpaid contributions from the original due date. Expect roughly $10 to $50 per quarter for a late report, plus interest of 1% to 1.5% per month on any unpaid balance. On the federal side, failure to deposit FUTA tax on time triggers a separate penalty: 2% for deposits up to 5 days late, 5% for 6 to 15 days late, and 10% for deposits more than 15 days overdue.8Office of the Law Revision Counsel. 26 USC 6656 – Failure to Make Deposit of Taxes First-time depositors who make an inadvertent mistake may qualify for a waiver if they file the return on time.
How Your Assigned Rate Changes Over Time
Your SUI rate is not fixed. After an initial period at the new-employer rate, the state recalculates your rate annually based on your experience rating, which measures how much your former employees have drawn from the unemployment fund. More benefits charged to your account push the rate up; fewer claims push it down.9Employment & Training Administration. Experience Rating – Unemployment Insurance Federal law requires at least three consecutive years of experience data before a state can assign a reduced rate below the standard rate.10Office of the Law Revision Counsel. 26 USC 3302 – Credits Against Tax
Your state mails or posts a rate notice each year, usually in the fall or early winter, showing the rate for the upcoming year. Review it carefully. If the rate looks wrong (for example, benefits were charged to your account for a worker who quit voluntarily), you can appeal within the timeframe stated on the notice.
Employees Working in More Than One State
If you have workers who cross state lines, you need to decide which state gets the SUI tax for each one. Federal guidelines apply a four-step test in sequence, and you stop at the first step that produces an answer:11U.S. Department of Labor. Unemployment Insurance Program Letter No. 20-04, Attachment I
- Localization. Is the employee’s work localized in one state? If all or nearly all the work happens in one state and any out-of-state work is temporary or incidental, that state gets the tax.
- Base of operations. If work isn’t localized anywhere, file in the state where the employee’s base of operations sits, provided they do some work there.
- Direction and control. If the employee doesn’t work in the state where their base of operations sits, file in the state from which the work is directed and controlled, again only if they perform some work there.
- Residence. If none of the above resolve the question, file in the state where the employee lives, provided they perform some work there.
The goal is one state’s coverage per worker, not split or duplicated. For remote employees, the localization test usually assigns the tax to the state where the employee physically works, regardless of where your business is headquartered.
The Reimbursable Option for 501(c)(3) Nonprofits
Organizations with 501(c)(3) tax-exempt status have an option for-profit employers don’t. Instead of paying quarterly SUI taxes at an assigned rate, they can elect to reimburse the state dollar-for-dollar for unemployment benefits actually paid to former employees.12Office of the Law Revision Counsel. 26 USC 3309 – State Law Coverage of Services Performed for Nonprofit Organizations The right comes from FUTA and is available in every state.
The reimbursable method rewards nonprofits with low turnover: if former employees rarely file claims, you pay little. A wave of layoffs, however, can produce a reimbursement bill larger than what you would have paid in taxes, with no way to spread the cost. Some nonprofits manage that risk with stop-loss insurance or a third-party administrator pooling risk across organizations. To elect the method, you file an election form with your state agency, generally before the start of a calendar year. Most states require you to stay with the election for a minimum period, commonly two years, before switching back.
One boundary worth noting: SUI tax applies to employees, not to independent contractors. If a state later reclassifies a worker you treated as a contractor, you owe back taxes, penalties, and interest on wages that should have been reported. Document your classification reasoning at the time you bring each worker on. If a status is genuinely unclear, you can request a formal IRS determination on Form SS-8.13Internal Revenue Service. About Form SS-8, Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding
How Long to Keep the Records
The IRS requires you to keep employment tax records for at least four years after the tax becomes due or is paid, whichever is later.14Internal Revenue Service. Topic No. 305, Recordkeeping That covers quarterly wage reports, payment confirmations, payroll registers, separation notices, and documentation supporting your SUI rate calculations. Many states set their own periods, and some exceed the federal four-year floor. Keeping records for at least five years is a reasonable default that satisfies both federal rules and most state rules.
Your records should let you reconstruct each quarterly filing: employee names and Social Security numbers, wages paid by quarter, taxable wages by quarter, hours worked, your assigned rate, the tax calculated and paid, and confirmation numbers or receipts for each submission. Electronic copies are fine as long as they are legible and accessible for an audit. If your payroll software generates these reports, archive them quarterly rather than trusting the software to still be available years later.