Working as a Contractor in Utah: Tax, Licensing and Getting Paid

Two things decide whether a job in Utah makes you money: getting the license your work needs, and setting aside the right tax. Utah licenses its contractors and taxes their profit, so both are worth getting right before you take work on.‍‌‌​​​​‌‌‌​‌​‌‌​​‌​​​​‌‌​‌​‌​‌​‍

Each section below points to a tool that runs your exact numbers for Utah.

Tax in Utah

Utah has a flat 4.45% state income tax on top of your federal taxes. A flat rate makes the math simple: the same percentage applies whatever you earn. You still owe federal income tax and self-employment tax on your profit as well, and you make estimated payments to both the state and the IRS through the year.

On sales tax, Utah follows the usual rule for the trades: your labor is not taxed, and you pay sales tax on your materials when you buy them rather than charging it to the customer.

Work out what to hold back on the Tax Set-Aside Calculator, which runs the federal and self-employment numbers for Utah.

Getting paid: liens and retainage

A mechanic's lien is the tool that actually gets a Utah contractor paid, and in Utah you generally have to record it within 180 days of final completion of the original contract - the whole job, not your own last day. There is usually an earlier notice to send first, so do not wait until the filing deadline to start. Miss it and you lose the lien, so the dates matter.

Enforcing it has its own clock. 180 days from the day you filed your notice of lien (38-1a-701). Miss it and the lien is automatically and immediately void - the statute goes further and says a court then has NO SUBJECT MATTER JURISDICTION over it, so there is nothing to argue. Nobody can force you to sue sooner; Utah has no demand-to-commence provision. Work out your dates on the Lien Deadline tool, and if they are close, get an attorney to confirm them against the statute (Utah Code 38-1a-402, 38-1a-501, 38-1a-502, 38-1a-507, 38-1a-701).

On money held back as retainage, here is where Utah lands:

• Private work: 5% of any payment due under the contract, AND separately the total construction price, with both ceilings applying at once.
• Public work: 5% of any payment due, and the total construction price.
• Release: Private: 45 days (the statute does not say whether these are calendar or business days) from the latest of: the owner or public agency receiving your billing statement; a certificate of occupancy or final acceptance notice being issued; a public agency or building inspector permitting partial or complete occupancy or use; or you accepting the final pay quantities. Public: 45 days (the statute does not say whether these are calendar or business days) from the latest of the same four events.
• Prompt pay: You must pass a subcontractor its share within 10 days of receiving retainage, and no party may require another to waive any provision of the section. Knowingly and wrongfully withholding retainage carries 2% a month on the amount, plus the winner's legal costs.

Whether the rule covers your job at all is a separate question from the percentage. Private: all construction contracts entered into on or after 1 July 1999.

And the step-down is not the same thing as a right. Utah cuts the rate to 5% when the owner holds less than 5% from the original contractor, either from the outset or by a later reduction, in which case every tier below automatically matches that lower figure. That figure follows whatever the owner actually held from the contractor above you, so ask what rate is being held up the chain. No reinstatement mechanism appears in the section.

Heads up: The current §13-8-5 is marked superseded from 1 January 2027, so a new version is already enacted. Re-check the figures above after that date.

Check the Retainage Calculator before you sign a contract that holds back more.

Free Utah forms: retainage letters and lien waivers

Three letters written for Utah's rules, with the state's own release clock and its statutory citation already in them. Fill one in on screen and download it as a PDF or a Word file.

• Retainage Release Request (Utah), for when the job is done and the money has not come back
• Retainage Overdue: Demand for Payment (Utah), for when the release date has passed and nothing has arrived
• Retainage Held Above the Cap: Challenge Letter (Utah), for when more is being held than the state appears to permit

Utah also sets out the wording of a lien waiver in its own statute. These are reproduced from it rather than reworded, because the wording is the part that carries the legal effect. What a signature costs you differs from state to state, and not every state makes a waiver that departs from the form unenforceable, so read the notes on the form itself before you sign one.

• Utah: Conditional Waiver and Release Upon Progress Payment, for when someone asks you to sign away a stage payment before the money has cleared
• Utah: Waiver and Release Upon Final Payment, for when the final payment is being settled
• Utah: The Restrictive Endorsement That Waives Your Lien, for when a check arrives with wording written on it

Do you need a license in Utah?

Utah requires a state contractor license to take building work on. The threshold that triggers it: License required from the first dollar. A small-job exemption covers work under $7,000, and an insurance affirmation is owed above $3,000. Working unlicensed when your job needs a license is the expensive mistake here. The small-job exemption is SUBJECT TO trade carve-outs: plumbing, electrical, gas appliances, fire suppression, alarms, HVAC and radon systems remain licensed REGARDLESS OF VALUE. 58-55-301(1)(b) preempts additional local licensing. The license comes from Utah Division of Professional Licensing (DOPL). Utah accepts the NASCLA commercial exam, useful if you work across state lines.

Trade licenses for electrical, plumbing and HVAC are usually separate and often required even where a GC license is not. See what applies to your trade on the Contractor License Checker.

Building codes and permits

Utah adopts its building codes statewide, so the rules travel with you across the state. Editions still move, so confirm yours with the building department before you price a job.

• Homes: 2021
• Electrical: 2023 for commercial / the residential code chapters for one- and two-family dwellings, which derive from older NEC text
• Energy: a state-written residential energy chapter since 1 July 2026, replacing the model provisions entirely / 2024 IECC unamended for commercial
• Plumbing: 2024 IPC (since 1 July 2026)

Utah does not run one edition across the whole job, and the electrical code is where it splits: 2023 for commercial / the residential code chapters for one- and two-family dwellings, which derive from older NEC text. That matters more than the number itself. If you work on houses, the residential edition is your book, and the single figure quoted in most adoption charts is the commercial one.

Utah's codes are enacted by the Legislature itself rather than by a rulemaking board, so the commission that reviews model codes only advises and the statute is the record of what applies. No city or county may adopt a different edition or opt out; they may only add amendments through the statutory process. The electrical split is real: commercial work follows the 2023 NEC while a one- or two-family dwelling follows the electrical chapters inside the residential code, which derive from older NEC text and have not been reissued off the 2023 edition, so do not buy a standalone NEC book and assume it governs a house. Two things changed on 1 July 2026: commercial energy moved to the unamended 2024 IECC, and the residential energy chapter was deleted outright and replaced with a short energy chapter the Legislature wrote itself, which is not a version of the IECC at all. Plumbing moved to the 2024 IPC on the same date.

Source: Utah Code title 15A, in particular §15A-1-204(1)(a), §15A-2-103 and §15A-3-601(1), as amended by 2026 H.B. 65; NFPA's adoption record cited only as corroboration of the electrical split. We have not yet read this row against Utah's own adopting authority, so confirm the edition locally before you rely on it.

Check a specific job on the permit tool.

Pay and workers' comp

The minimum wage in Utah is the federal $7.25 an hour. That is the floor for anyone you put on the books, and it is worth confirming against the state labor department each year because several states step their rate mid-year. Check a rate on the minimum-wage tool.

Workers' comp rates in Utah are not published as a single figure; they turn on your trade's class code and your payroll. Get a realistic range on the Workers' Comp Estimator, then get a real quote.

If a client will not pay

If a client will not pay, you can sue for up to $20,000 in Utah's Small Claims (Justice/District Court). That covers most unpaid-invoice disputes for a small outfit; a bigger claim goes to regular civil court where you will probably want an attorney. Walk through whether filing is worth it on the Small Claims checker.

The clock runs the other way too: a client generally has 6 years to sue you over the work under a written contract in Utah, with an absolute cutoff 6 years after the job is substantially complete. Work out your exposure on the Warranty & Claim Deadline tool.

Common questions

How much state income tax will I pay in Utah?

Utah has a flat 4.45% state income tax on your profit, on top of federal income tax and self-employment tax. Use the Tax Set-Aside Calculator to see what to hold back.

Do I need a contractor's license in Utah?

Yes. Utah requires a state contractor license. The threshold: License required from the first dollar. A small-job exemption covers work under $7,000, and an insurance affirmation is owed above $3,000. It is issued by Utah Division of Professional Licensing (DOPL).

What is the small claims limit in Utah?

You can sue for up to $20,000 in Utah's Small Claims (Justice/District Court). The filing fee is typically $60 to $185. Larger claims go to regular civil court.

How long do I have to file a mechanic's lien in Utah?

Generally 180 days from final completion of the original contract - the whole job, not your own last day, and there is usually an earlier notice to send first. Miss it and you lose the lien. Work your own dates out on the Lien Deadline tool.

How much retainage can be held back in Utah?

Private: 5% of any payment due under the contract, AND separately the total construction price, with both ceilings applying at once. Public: 5% of any payment due, and the total construction price. The condition on it, in the statute's own terms: Private: all construction contracts entered into on or after 1 July 1999. Run your own figure on the Retainage Calculator.

Are there free Utah contract and payment forms?

Yes. This page links 3 retainage letters written to Utah's own release clock, and 3 lien waiver forms reproduced from the Utah statute. They are free, there is no sign-up, and you fill one in on screen and download it as a PDF or a Word file.

What is the minimum wage in Utah?

$7.25 an hour, the federal floor. Check a specific job on the minimum-wage tool.

The honest bit

These are the 2026 rules for Utah as they stood when this guide was written, and they change: legislatures move thresholds, deadlines and rates every year. Treat this as general guidance to point you in the right direction, not legal, tax or financial advice. Verify anything you rely on at the source (the IRS, the Utah tax and licensing agencies, and your local building department) or with a professional. Where Utah does something unusual, the detail is called out above rather than glossed over.

Related: Tax Set-Aside Calculator · Mechanic's Lien Deadline · Contractor License Checker · Small Claims checker · Working in Your State

How this site is funded →

Spotted something wrong or out of date? Email us at hello@kilnguides.co.uk.

In crisis? 988 Suicide & Crisis Lifeline 988 · Mental health support

How this site is funded →