Utah does not issue a state version of the W-4, so there is no Utah state withholding form for employees to hand to their employer. Instead, your employer calculates Utah withholding from the federal W-4 you already filed, applying the state’s withholding tables. The Utah form you will actually encounter has a different purpose: the TC-40W, or Utah Withholding Tax Schedule, is attached to your annual return to claim credit for state income tax that was withheld from your pay during the year. Utah’s income tax is a flat 4.5%.
Why There’s No State W-4 in Utah
Many states ask workers to fill out a state-specific withholding certificate alongside the federal W-4. Utah skips that step. Your employer determines how much Utah tax to pull from each paycheck using the filing status and adjustments on your federal W-4, then applies the schedules in Utah Publication 14.1Utah State Tax Commission. Employer Withholding Every schedule starts by multiplying your wages for the pay period by 4.5%, then adjusts downward for allowances.2Utah State Tax Commission. Publication 14, Withholding Tax Guide
If you want more Utah tax withheld per paycheck, the simplest route is to enter an extra dollar amount on line 4(c) of your federal W-4. That line tells your employer to withhold additional tax beyond the standard calculation, and because Utah piggybacks on the W-4, the increase flows through to your state withholding too.3Internal Revenue Service. FAQs on the 2020 Form W-4 Employees who expect to owe no Utah tax for the year can file a withholding exemption certificate with their employer instead.1Utah State Tax Commission. Employer Withholding
What the TC-40W Is
The TC-40W is not a payroll form. It is a schedule you complete at tax time to report every source of Utah income tax already withheld during the year. You transcribe the Utah-specific boxes from your W-2s and 1099s onto the schedule so the Utah State Tax Commission can match those amounts against what your employers and payers reported. The totals from the TC-40W feed directly into your Utah Individual Income Tax Return (Form TC-40) as credits against your tax bill.4Utah State Tax Commission. TC-40W 2025 – Utah Withholding Tax Schedule
The form has three parts, each covering a different withholding source:
- Part 1 covers standard wage and income withholding reported on W-2s and 1099s.
- Part 2 covers mineral production withholding reported on Form TC-675R or a Utah Schedule K-1.
- Part 3 covers pass-through entity withholding reported on a Utah Schedule K-1 from partnerships and S corporations that withheld Utah tax on your behalf.
Most filers only need Part 1. Parts 2 and 3 apply if you hold interests in mineral production or pass-through businesses that withheld Utah tax for you.4Utah State Tax Commission. TC-40W 2025 – Utah Withholding Tax Schedule
When You Need to File It
Complete the TC-40W if any W-2, 1099, TC-675R, or Utah Schedule K-1 you received shows a Utah withholding amount. The form itself says to enter W-2 or 1099 information “only if there is Utah withholding on the form.”4Utah State Tax Commission. TC-40W 2025 – Utah Withholding Tax Schedule If none of your income documents list any Utah tax withheld, you skip the TC-40W entirely.
Common situations where you will have Utah withholding include working for a Utah employer, receiving retirement distributions with Utah tax withheld, or earning income through a Utah-based partnership or S corporation that withheld on your share. Nonresidents who worked briefly in Utah and had Utah tax withheld would also use the TC-40W on a nonresident return to report those amounts and claim any refund of over-withholding.5Tax Foundation. Nonresident Income Tax Filing and Withholding Laws by State, 2026
How to Fill Out the TC-40W
Gather every W-2 and 1099 that shows a Utah withholding amount before you start. You do not mail copies of those documents to the Tax Commission; the TC-40W replaces them. Each W-2 or 1099 gets its own set of lines on the schedule. If you have more than four, use additional copies of the form.4Utah State Tax Commission. TC-40W 2025 – Utah Withholding Tax Schedule
For each W-2 or 1099 in Part 1, enter:
- Line 1: the employer or payer’s federal ID number (W-2 box “b” or the payer’s EIN on a 1099).
- Line 2: the Utah withholding ID number (W-2 box 15 or on the 1099), a 14-character code ending in “WTH” with no hyphens.
- Line 3: the employer or payer’s name and address (W-2 box “c” or 1099).
- Line 4: an “X” if the entry comes from a 1099 rather than a W-2.
- Line 5: your Social Security number.
- Line 6: Utah wages or income (W-2 box 16 or the relevant 1099 amount).
- Line 7: Utah withholding tax (W-2 box 17 or 1099).
After entering all W-2s and 1099s, total the amounts from all line 7 entries. Where that total goes on your TC-40 depends on whether you also have entries in Part 2 or Part 3. If you used only Part 1, the total goes on TC-40 page 2, line 33. If you have Part 2 or Part 3 entries, the Part 1 total goes on TC-40 page 3, Part 5, line 1 instead.4Utah State Tax Commission. TC-40W 2025 – Utah Withholding Tax Schedule
Submitting the TC-40W With Your Return
Attach the completed TC-40W to your Utah Individual Income Tax Return (Form TC-40). Do not send it to your employer or file it separately with the Tax Commission; the schedule is submitted only as part of your annual return.4Utah State Tax Commission. TC-40W 2025 – Utah Withholding Tax Schedule
The TC-40 can be e-filed through Utah’s Modernized Electronic Filing (MeF) program.6Utah State Tax Commission. Modernized Electronic Filing – MeF When you e-file, the TC-40W data is transmitted electronically with the rest of your return. If you file on paper, print the TC-40W and include it in the envelope. Leaving it out can delay processing or cause the Tax Commission to reject your withholding credits. Any return required to be filed electronically is also subject to the late filing penalty if submitted on paper instead.7Utah State Tax Commission. Pub 58