Missouri unemployment tax applies to the first $9,000 of each employee’s annual wages, at rates ranging from 0.0% to over 6.0% depending on your industry, your layoff history, and statewide adjustments. Every liable employer registers with the Division of Employment Security, files quarterly wage reports through UInteract, and pays by the last day of the month after each quarter. Miss a deadline and penalties plus interest start stacking immediately.
When You Owe the Tax
A business becomes liable once it meets either of two triggers: paying $1,500 or more in total wages during any calendar quarter (current or prior year), or employing at least one person for any part of a day during 20 different calendar weeks in a year. Those 20 weeks don’t have to be consecutive, so seasonal and part-time operations can cross the line without noticing.1Missouri Revisor of Statutes. Missouri Code 288.032 – Employer Defined, Exceptions
Some categories have their own thresholds. A 501(c)(3) nonprofit becomes liable when it employs four or more workers for some portion of a day in 20 different weeks of a calendar year.2Missouri Department of Labor and Industrial Relations. Liability for Unemployment Household employers face a separate rule for domestic workers, and agricultural labor is carved out from the general $1,500 test and governed by federal standards.
Once you meet a threshold, you have 30 days to notify the Division. Registration goes through the state’s business registration portal, through UInteract, or on the Unemployment Tax Registration form.2Missouri Department of Labor and Industrial Relations. Liability for Unemployment
If your business falls below every threshold, you can apply to end coverage. The application must reach the Division by February 10 of the year following the calendar year you dropped below.3Missouri Revisor of Statutes. Missouri Code 288.080 – Employer, When Subject to Law – Election of Coverage – Termination
Employees vs. Independent Contractors
The tax only covers wages paid to employees. Payments to genuine independent contractors are not subject to it. Missouri applies the common-law right-to-control test: if you direct how the work is performed — the methods, schedule, and tools — the worker is an employee. If you only care about the result and the worker decides how to reach it, that person is a contractor.4Missouri Revisor of Statutes. Missouri Code 288.034 – Employment Defined
The Division presumes anyone performing services for pay is an employee unless the business proves otherwise. If an audit reclassifies your contractors as employees, the unpaid contributions come due retroactively, with penalties and interest layered on top.
How Your Rate Is Calculated
Only the first $9,000 of each employee’s annual gross wages is taxable. Anything above that for a given worker is exempt from further state unemployment tax that year.5Missouri Department of Labor and Industrial Relations. Tax Rates The rate applied to that $9,000 depends on your history in the system.
New Employer Rates
Until you build enough history for an experience rating, you pay a flat rate tied to industry classification. For 2026, most new employers pay 2.376%, and new 501(c)(3) nonprofits pay 1.00%. Those figures already include applicable adjustments.5Missouri Department of Labor and Industrial Relations. Tax Rates
Experience Rates
After enough time in the system, the Division assigns an experience rate based on your account balance, benefit charges from former employees, and average taxable payroll. Base experience rates run from 0.0% to 6.0%.5Missouri Department of Labor and Industrial Relations. Tax Rates Layoffs that generate benefit claims against your account push the rate up, and once it climbs, working it back down takes years of clean history.
Surcharges and Adjustments
Two additional layers can push your effective rate above the base:
- A maximum rate surcharge applies to employers stuck at 6.0% for two consecutive years, adding 0.25%. Each additional year at the maximum adds another 0.25%, capped at 1.5% total.
- The contribution rate adjustment (CRA) is a system-wide multiplier tied to the average cash balance of the state’s Unemployment Trust Fund. Depending on the fund’s health, rates can increase by 10%, 20%, or 30%, or decrease by 7% or 12%. Every employer feels it, not just those at the maximum.5Missouri Department of Labor and Industrial Relations. Tax Rates
Because of the CRA, your bill can shift year to year even when nothing about your own workforce has changed.
Voluntary Contributions To Lower Your Rate
If your experience rate lands higher than you want, Missouri lets you make voluntary payments into your account. A payment that raises your balance enough to move you into a lower rate tier will apply to the next calendar year. The deadline is March 15 of the year you want the lower rate to take effect.5Missouri Department of Labor and Industrial Relations. Tax Rates
This only makes sense if you are close to a tier boundary. Run the numbers first. The voluntary payment has to save more in reduced contributions over the year than it costs you upfront. The Division uses account data through the preceding July 31, so you can estimate your position before writing a check.
Filing and Paying Each Quarter
Wage reports and payments go through the UInteract portal. Each report lists every employee’s full legal name, Social Security number, and total gross wages paid during the quarter.6Missouri Department of Labor and Industrial Relations. UInteract Login Both report and payment are due by the last day of the month after the quarter closes:7Missouri Revisor of Statutes. Missouri Code 288.090 – Contributions Required, When
- First quarter (January–March): April 30
- Second quarter (April–June): July 31
- Third quarter (July–September): October 31
- Fourth quarter (October–December): January 31
Penalties and Interest
Miss a filing deadline and Missouri charges a penalty for each month or partial month the report is outstanding: the greater of $100 or 10% of the contributions owed for that quarter. If you stay delinquent, the total caps at the greater of $200 or 20% of contributions owed.8Missouri Revisor of Statutes. Missouri Code 288.160 – Assessment of Delinquent Contributions – Limitations – Refusal to File, Penalty Interest also accrues on unpaid contributions after each due date, at a variable rate tied to the IRS rate. The longer you wait, the more expensive catching up gets.
Record Retention
Keep payroll records for at least three calendar years after they are created. The Division can inspect and copy them at any reasonable time, and gaps in your records make audits harder to fight.9Missouri Revisor of Statutes. Missouri Code 288.130 – Employer Records
How State Tax Interacts With FUTA
You also owe federal unemployment tax (FUTA) on the first $7,000 of each employee’s wages at a gross rate of 6.0%. Employers who pay their state tax on time claim a credit of up to 5.4%, cutting the effective FUTA rate to 0.6%.10Employment and Training Administration – U.S. Department of Labor. FUTA Credit Reductions
States that borrow from the federal government and fail to repay on schedule lose part of that credit, raising the effective FUTA rate for every employer in the state. Missouri is not currently a credit reduction state, and no federal interest assessment is expected for 2026.5Missouri Department of Labor and Industrial Relations. Tax Rates That can change if the Trust Fund drops and the state has to borrow.
Buying a Business: Successor Liability
If you acquire substantially all of a business and keep operating it without interruption, Missouri treats you as the predecessor’s successor for unemployment tax. You inherit the prior owner’s experience rating, payroll history, and any unpaid contributions, interest, and penalties.11Missouri Revisor of Statutes. Missouri Revised Statutes Section 288.110 – Transfer of Employer Accounts
If you weren’t already an employer when you bought the business, you pay the predecessor’s rate for the rest of that rate year. If you already had an account, the Division recalculates your rate by merging both accounts’ experience. Mid-quarter acquisitions trigger the recalculation on the first day of the next quarter.
The Division scrutinizes acquisitions that look designed to grab a lower rate. If a purchase appears aimed at rate manipulation, the Division refuses to transfer the favorable experience and assigns the standard new-employer rate instead.11Missouri Revisor of Statutes. Missouri Revised Statutes Section 288.110 – Transfer of Employer Accounts