Utah taxes income at a flat 4.55% rate with no brackets, but it softens that for lower and middle earners with a taxpayer tax credit that phases out as income climbs. This calculator applies the flat rate to your taxable income, then subtracts the credit to estimate the net Utah state tax you actually owe.
How it works
Utah’s calculation has two parts:
- Flat tax.
gross state tax = taxable income x 4.55%. Every dollar of taxable income is taxed at the same rate. - Taxpayer tax credit. The credit equals 6% of your federal deductions and exemptions, then phases out above an income threshold that depends on filing status. Above the threshold, the credit shrinks by
1.3%of the excess income until it reaches zero.
The net tax is gross tax minus the (non-negative) credit.
Tips and example
A single filer with $50,000 of taxable income owes 50,000 x 4.55% = $2,275 before the credit. With a base credit reduced by the phase-out, the net might land near $1,900, lowering the effective rate below the headline 4.55%.
As income rises, the credit fades out and the effective rate approaches the full flat 4.55%. Enter your numbers to see how much the taxpayer credit reduces your bill, then use the Utah paycheck calculator to translate annual tax into per-period withholding.