Utah Tax Commission Issues Interest Rate Guidelines

The state released revised tax guidance clarifying interest rules and new refund limits for taxpayers.

Updated on Oct. 15, 2026 in Taxes

Isometric editorial illustration of a rigid mountain structure built from geometric blocks in teal and oxblood, representing state tax policy. — The Utah Tax Commission issued revised interest rate guidelines, setting a 6 percent rate and a new $100 cap on interest for overpayments. AI Illustration. Upload story photo >

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The Utah Tax Commission has released a draft revision of Publication 58, outlining state rules regarding tax interest and penalties. The guidance confirms a 6 percent annual interest rate and establishes a new $100 cap on interest for amended return overpayments.

Why it matters

These updates provide taxpayers with clarity on how the state calculates interest on fees and refund claims. By formalizing these caps, the commission simplifies the process for managing overpayments while maintaining specific exemptions for certain organizations.

Utah maintains an annual interest rate of 6 percent on taxes and fees through 2027. Interest on overpayments from amended returns is now restricted to $100 per calendar year.

The players

Utah Tax Commission

This state agency is responsible for the administration and enforcement of tax laws and the collection of tax revenue within Utah.

The details

The newly released draft revision of Publication 58 details the application of the 6 percent interest rate and the mechanics of the refund interest cap. The limitation on amended return interest does not apply to overpayments caused by Tax Commission errors or to returns filed by federally recognized tribes.

The 6 percent interest rate period began on January 1, 2025.
The $100 refund interest limit became effective on January 1, 2026.
The current 6 percent interest rate remains in effect through December 31, 2027.

Market Dynamics

This regulatory update follows the standard administrative cycle for the Utah Tax Commission's Publication 58 to ensure state tax policies remain consistent. By establishing clear caps on refund interest, the state aligns its fiscal procedures with broader regional standards for tax collection.

Taxpayers who file amended returns in Utah should be aware that interest payments on any resulting overpayments are now capped at $100 annually. This rule does not apply if the overpayment resulted from an error made by the Tax Commission itself.

The takeaway

Taxpayers should review their filing strategies to understand how the new $100 cap might impact their overall refund expectations. Consistent interest rates through 2027 offer a predictable framework for planning state-level tax obligations.