As a reminder for all employers in Missouri, the Missouri Department of Labor (MDOL) has updated the unemployment insurance (UI) taxable wage base for wages paid on or after January 1, 2026. The base decreases to $9,000 from $9,500, and this change is reflected on the state’s Tax Rates page.

This update is applicable to all employers with employees in Missouri and is in effect as of January 1, 2026.

What Employers Have to Do

• Update Missouri UI wage base settings to $9,000 for 2026: Employers should ensure their payroll and HR systems use a $9,000 Missouri unemployment insurance taxable wage base per employee for wages paid between January 1 and December 31, 2026. In their payroll systems, they should confirm that the Missouri SUI/SUTA wage limit (often labeled “MO UI limit” or “MO SUTA wage base”) is set to $9,000, and, if a third‑party payroll provider is used, obtain written confirmation that this base is active for all 2026 pay dates.

• Confirm taxable vs. excess wages use the new base: Employers should review Missouri quarterly unemployment wage reports to confirm that wages up to $9,000 per employee are treated as taxable wages and wages above that amount are reported as excess wages. They should spot‑check employees who will exceed $9,000 in annual wages to verify that, once the cap is reached, additional wages are no longer subject to Missouri UI tax and are correctly reported as excess wages.

• Align documentation and budgeting with the $9,000 base: Employers should update internal wage base matrices, UI tax guides, standard operating procedures, and budgeting models so they reflect the 2026 wage base of $9,000 (instead of the 2025 base of $9,500). They should also recalculate maximum Missouri UI cost per employee using the new base and their assigned 2026 Missouri UI tax rate.

Overview

• New wage base for 2026: $9,000 per employee.
• Previous wage base (2025): $9,500 per employee.
• Effective period: Applies to wages paid January 1 through December 31, 2026.

Background: Missouri may adjust the wage base down by $500 or up by $1,000 each year based on the average balance of the Unemployment Compensation Trust Fund; the base cannot fall below $7,000 or exceed $13,000. The 2026 reduction follows this rule (RSMo § 288.036(2)).

Why this matters

An employer’s maximum Missouri unemployment insurance (UI) tax per employee is now calculated on $9,000, not $9,500, reducing potential UI tax exposure by $500 multiplied by the employer’s assigned 2026 rate.

• For example, at the new‑employer rate of 2.376%, the maximum per‑employee contribution drops by approximately $11.88.

Key Risks for Employers

• System mismatch: If Payroll systems are not updated to the $9,000 base on January 1, 2026, employers may overpay Missouri UI contributions.

• Documentation gaps: Internal references (e.g., wage‑base matrices or manuals) that still show $9,500 can cause downstream errors in audits or rate projections. Using the state’s tax rates page ensures alignment (See Tax Rates page here

Source References:

• Missouri DOL – Tax Rates 2026
• Missouri DOL – Taxable and Excess Wage Calculations

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