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Utah Personal Tax ExtensionForm TC-546

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Utah Quick Reference
Personal Income Tax Extension
StateUtah
FormTC-546
Extension Status✓ Automatic
Original DeadlineApril 15
Extended DeadlineOctober 15
Extension Period6 months
State AgencyUtah State Tax Commission

Utah Personal Income Tax Extension – Fully Automatic, No Form Required

Utah provides an automatic six-month extension for filing personal income tax returns – no application, no federal extension required. Taxpayers who cannot file by April 15, 2026, are automatically granted until October 15, 2026, provided they meet Utah’s prepayment requirement. Any Utah income tax owed under that threshold must still be paid by April 15.

90% or 100% Prepayment Required

Meet the Threshold by April 15 to Avoid Penalties

Utah’s automatic extension requires a prepayment by April 15, 2026. You must pay the lesser of: (1) at least 90% of your current year’s Utah tax liability, or (2) 100% of your prior year’s Utah tax liability. Use whichever amount is lower. The remaining balance is due when you file by October 15.

No Federal Extension Needed

Utah’s Extension Is Entirely Automatic

Unlike most states, Utah does not require a federal extension or a separate state form to get the automatic extension. Pay the required prepayment by April 15 and file by October 15 – no paperwork needed.

Pay the prepayment threshold by April 15: Utah’s extension is automatic, but prepayment is required. Use TAP at tap.utah.gov to pay by April 15, 2026. No form or federal extension is needed to qualify.

Using Form TC-546

Form TC-546 (Individual Income Tax Prepayment Coupon) is used when mailing an extension prepayment to Utah. For online payments, use TAP (Taxpayer Access Point) at tap.utah.gov – both ACH debit and credit card are available (a service fee may apply to card payments). No separate extension application is needed whether you pay online or by mail.

Utah’s Tiered Penalty Structure

Utah’s failure-to-file and failure-to-pay penalties are both tiered based on how late the filing or payment is: the greater of $20 or 2% for payments 1–5 days late, 5% for 6–15 days late, and 10% for payments more than 16 days late. Meeting the prepayment threshold by April 15 and filing by October 15 avoids all penalties entirely.

Best Practices

  • No form or federal extension is required – Utah’s extension is fully automatic.
  • Pay the lesser of 90% of current year’s tax or 100% of prior year’s tax by April 15, 2026, via TAP (tap.utah.gov).
  • File your completed Utah return by October 15, 2026.
  • Pay the remaining balance when filing – any amount above the prepayment is due October 15.

Utah’s automatic extension is among the most user-friendly – no paperwork, no federal extension required. The only requirement is meeting the prepayment threshold by April 15. Use TAP for the fastest, most convenient payment option and file your return by October 15, 2026.

Quick Reference Table

Item Details
State AbbreviationUT
Extension StatusAutomatic
Return Due DateApril 15, 2026
Extended Due DateOctober 15, 2026
Online PaymentUtah | TAP – Online Tax Extension Payment
Payment VoucherForm TC-546 | Individual Income Tax Prepayment Coupon
State Payment AgencyUtah State Tax Commission
Failure to File PenaltyGreater of $20 or 2% (1–5 days); 5% (6–15 days); 10% (16+ days)
Failure to Pay PenaltyGreater of $20 or 2% (1–5 days); 5% (6–15 days); 10% (16+ days)

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Utah Extension Payment Options

Pay your Utah prepayment by April 15, 2026, using TAP at tap.utah.gov. Pay the lesser of 90% of current year’s tax or 100% of prior year’s tax to qualify for Utah’s automatic extension.

ACH Debit

Pay via TAP

Visit tap.utah.gov and pay by ACH debit from your checking or savings account. This is the most straightforward online option for Utah extension payments.

Credit Card

Pay by Card via TAP

Also available at tap.utah.gov. A service fee may apply to credit card transactions.

Paying by Mail: Use Form TC-546 with a check or money order. Include your Social Security number and tax year on the payment.

Mailing Address with Payment

Send Check or Money Order with Form TC-546
Income Tax Prepayment
Utah State Tax Commission
210 N 1950 West
Salt Lake City, UT 84134-0266