Utah tax deadlines in 2026: filing dates and estimated payments
Deadlines that fall in calendar 2026: the 2025 return and the 2026 estimated payments. Different year? See Utah 2025 →
Utah deadlines in 2026
| 2025 individual return due | April 15, 2026 |
|---|---|
| Extended filing deadline | October 15, 2026 |
| Payment due | April 15, 2026, extension or not |
| 2026 estimated payments | Not required; prepayments optional |
Conforms to April 15 with an automatic extension to October 15 (no form required); at least 90% of tax must be paid by April 15 to avoid penalty. Utah individuals do not make formal quarterly estimated payments but may prepay; the dates shown reflect the federal quarterly schedule for prepayments.
Utah estimated tax payments in 2026
Utah does not require quarterly estimated (prepayment) tax payments from individuals; prepayments are optional and matter only for avoiding the extension penalty (pay 90% of the current-year tax or 100% of the prior-year tax by the original due date).
| Voucher | TC-546, Individual Income Tax Prepayment Coupon |
|---|---|
| Underpayment safe harbor | No underpayment-of-estimated-tax penalty regime for individuals; to get the automatic extension without penalty you must prepay by the original due date 90% of the current year's tax, 100% of the prior year's tax liability, or 90% of the current year's tax if you had no prior-year Utah liability or are a first-time filer. |
| Pay online | tap.utah.gov |
No quarterly due dates exist. Prepayments can be made any time via TAP or by mailing TC-546; the only deadline that matters is the return's original due date.
Source: incometax.utah.gov, read September 3, 2026. “Utah does not require quarterly estimated tax payments. You can prepay at any time on the Taxpayer Access Point (TAP), or by mailing your payment with form TC-546.”
All 51 jurisdictions in one table: state estimated tax payment dates for 2026.
Utah extensions
Every state's rule in one table: which states accept the federal extension in 2026.
| Does Utah accept the federal extension? | Not the federal one. The state extension is automatic when the required payment is made by the original due date. |
|---|---|
| Original due date | April 15, 2026 |
| Extended due date | October 15, 2026 |
| Payment | Still due April 15, 2026. The extension is to file, not to pay. Penalties are assessed unless you prepay by April 15 the lesser of 90% of 2025 tax or 100% of 2024 tax; interest accrues on unpaid tax. |
| How to get it | Nothing to file; prepay any required amount by April 15 via Taxpayer Access Point (TAP) or Form TC-546 coupon. |
All extension returns must be filed by Oct. 15, 2026; the federal Form 4868 is not part of the Utah rule.
Source: incometax.utah.gov, read September 3, 2026. “You get an automatic extension of up to six months to file your return. You do not need to file an extension form, but we will assess penalties if you have not met the prepayment requirements”
Federal deadlines in 2026
| 2025 Form 1040 | April 15, 2026 · extension October 15, 2026 |
|---|---|
| 2025 S-corp (1120-S) & partnership (1065) | March 16, 2026 |
| 2025 C-corp (Form 1120) | April 15, 2026 |
| 2026 federal estimated payments (1040-ES) | April 15, 2026 · June 15, 2026 · September 15, 2026 · January 15, 2027 |
Source: IRS Publication 509 and Form 1040-ES instructions, irs.gov.
Frequently asked questions
When are Utah state taxes due in 2026?
Your 2025 Utah individual income tax return is due April 15, 2026. If that date falls on a weekend or legal holiday, the deadline moves to the next business day. An extension moves the filing deadline to October 15, 2026, but any tax owed is still due on the original date.
When are Utah estimated tax payments due in 2026?
Utah does not require quarterly estimated payments from individuals; prepayments are optional. Use TC-546, Individual Income Tax Prepayment Coupon or pay online. The final installment for 2025 was due January 15, 2026.
Does Utah accept the federal extension?
Not the federal one. The state extension is automatic when the required payment is made by the original due date. The extended filing deadline is October 15, 2026, and tax is still due by April 15, 2026.
Does a Utah extension give me more time to pay?
No. An extension extends the time to file, not to pay. To avoid penalties and interest, pay what you expect to owe by April 15, 2026.
Dates are the statutory deadlines that fall in 2026 and move to the next business day when they land on a weekend or holiday. Each section links to the source it was checked against. Always confirm with the Utah tax agency or the IRS before relying on a date. This is general information, not tax advice.