Two things decide whether a job in North Carolina makes you money: getting the license your work needs, and setting aside the right tax. North Carolina 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 North Carolina.
Tax in North Carolina
North Carolina has a flat 3.99% 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, North Carolina 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 North Carolina.
Getting paid: liens and retainage
A mechanic's lien is the tool that actually gets a North Carolina contractor paid, and in North Carolina you generally have to record it within 120 days of your last day of furnishing at the site. 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 your last day of furnishing, the same clock as the filing deadline, not from recording. File late in the 120 days and you leave yourself under 60 to sue. Work out your dates on the Lien Deadline tool, and if they are close, get an attorney to confirm them against the statute (N.C.G.S. §§44A-12(b), 44A-11.1(a), 44A-11.2(l)(1), 44A-13(a)).
On money held back as retainage, here is where North Carolina lands:
- Private work: No statutory cap on private work in North Carolina. Whatever your contract says governs, so read the withholding clause.
- Public work: Nothing may be held at all where total project costs are below $150,000. 5% of any periodic payment due a prime contractor where total project costs are $150,000 or more.
- Release: Private: 7 days (the statute does not say whether these are calendar or business days) from receipt by the contractor or subcontractor of each periodic or final payment. Public: 60 days (the statute does not say whether these are calendar or business days) from submission of a pay request, once either the owner receives a certificate of substantial completion from the architect, engineer or designer, or the owner receives beneficial occupancy or use of the project.
- Prompt pay: Seven days from the prime receiving each periodic or final payment, on both private and public work, with 1% a month from the eighth day. On private work a pay-if-paid clause is unenforceable by statute.
The threshold is the part most charts leave out. In North Carolina, nothing may be held at all where total project costs are below $150,000. No retainage is allowed at all on periodic or final payments, by the owner or the prime contractor. The threshold was raised from $100,000 by Session Law 2026-9 §5.1(c), signed 19 June 2026 and in force now. (G.S. 143-134.1(b1))
And the step-down is not the same thing as a right. North Carolina cuts the rate to 0% when the project is 50% complete, measured by gross project invoices excluding materials stored off site reaching half the contract value, the contractor continues to perform satisfactorily, any nonconforming work notified in writing has been corrected, and the surety consents in writing. That drop is not automatic: somebody has to make a finding in your favor first, and reaching the milestone on its own entitles you to nothing. Ask in writing and get the finding recorded. Expressly reversible: if the owner determines performance is unsatisfactory it may reinstate retainage on each later payment application, up to 5%. It may also re-escalate under (b3) to hold 2.5% overall through completion.
Heads up: NCDOT is carved out of G.S. 143-134.1 entirely and runs a different mechanism: G.S. 136-28.9 lets it place retainage in bank trust accounts and pay the income to contractors, but sets no percentage cap, no step-down and no release deadline. On a federally funded job the state rules can also be displaced by federal contract terms under (b6).
Check the Retainage Calculator before you sign a contract that holds back more.
Free North Carolina retainage letters
Three letters written for North Carolina'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 (North Carolina), for when the job is done and the money has not come back
- Retainage Overdue: Demand for Payment (North Carolina), for when the release date has passed and nothing has arrived
- Retainage Held Above the Cap: Challenge Letter (North Carolina), for when more is being held than the state appears to permit
Do you need a license in North Carolina?
North Carolina requires a state contractor license to take building work on. The threshold that triggers it: $40,000 or more. Working unlicensed when your job needs a license is the expensive mistake here. License CLASSES cap the maximum single project, not the entry threshold: limited up to 750,000, intermediate up to 1,500,000, unlimited no ceiling (87-10(a1)). The raise from 30,000 came from S.L. 2023-108 s.2(a), and the session law's own Section 2(j) settles the date: this section becomes effective OCTOBER 1, 2023, and applies to permit applications submitted on or after that date. A SECOND TRIGGER CARRIES NO DOLLAR FIGURE AT ALL - erecting a North Carolina labeled manufactured modular building meeting the State Building Code makes a person a general contractor whatever the cost. No employee exemption appears in 87-1 or 87-14; a 1979 AG opinion says a salaried employee with overall supervisory control must still be individually licensed, but it was traced only to a non-primary aggregator and such opinions are persuasive, not binding. No disaster-repair exemption and no blanket public-works exemption exist in Article 1 - the statute expressly INCLUDES public utilities, and the only public carve-out is the narrow NCDOT one at 136-28.14. The license comes from NC Licensing Board for General Contractors. North Carolina 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
North Carolina 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: 2015 (published as the NC Residential Code, 2018 edition)
- Electrical: 2020, except one- and two-family dwellings
- Energy: 2015 (published as the NC Energy Conservation Code, 2018 edition)
- Plumbing: North Carolina Plumbing
North Carolina does not run one edition across the whole job, and the electrical code is where it splits: 2020, except one- and two-family dwellings. 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.
North Carolina names its codes by its own edition year, not by the international edition underneath. The 2018 Residential Code and 2018 Energy Conservation Code have both been effective since 1 January 2019 and are built on the 2015 IRC and 2015 IECC. On the electrical side the 2020 NEC applies with NC amendments to everything OTHER than one- and two-family dwellings, so a house is not on the same footing as the rest of the job. A 2024 State Building Code has been adopted with its effective date still being clarified by the State Fire Marshal as of 31 March 2025.
Source: N.C. Office of State Fire Marshal, Codes Current and Past (ncosfm.gov/codes/codes-current-and-past); NC Building Code Council; NEC edition per NFPA's adoption record citing the same authority. Read against that source on 2026-08-25.
Check a specific job on the permit tool.
Pay and workers' comp
The minimum wage in North Carolina 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.
On workers' comp, the rule that catches people out in North Carolina is who has to be covered. Sole proprietors are exempt; corporate officers can elect to exclude themselves. Get a premium range for your trade on the Workers' Comp Estimator.
If a client will not pay
If a client will not pay, you can sue for up to $10,000 in North Carolina's Small Claims Court (magistrate). 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 3 years to sue you over the work under a written contract in North Carolina, 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 North Carolina?
North Carolina has a flat 3.99% 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 North Carolina?
Yes. North Carolina requires a state contractor license. The threshold: $40,000 or more. It is issued by NC Licensing Board for General Contractors.
What is the small claims limit in North Carolina?
You can sue for up to $10,000 in North Carolina's Small Claims Court (magistrate). The filing fee is typically $96. Larger claims go to regular civil court.
How long do I have to file a mechanic's lien in North Carolina?
Generally 120 days from your last day of furnishing at the site, 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.
Are there free North Carolina contract and payment forms?
Yes. This page links 3 retainage letters written to North Carolina's own release clock and carrying its statutory citation. 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 North Carolina?
$7.25 an hour, the federal floor. Check a specific job on the minimum-wage tool.
What building code does North Carolina use?
North Carolina adopts statewide. Homes: 2015 (published as the NC Residential Code, 2018 edition). Electrical: 2020, except one- and two-family dwellings. Editions move, so confirm yours with the building department before you price a job.
The honest bit
These are the 2026 rules for North Carolina 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 North Carolina tax and licensing agencies, and your local building department) or with a professional. Where North Carolina 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
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Sources
- North Carolina contractor licensing authority · North Carolina contractor licensing authority. Who must hold a contractor or trade license in North Carolina, and the licensing instrument (https://www.nascla.org/commercial-exam-participating-state-agencies/north-carolina-licensing-board-general-contractors)
- North Carolina statutes (ncleg.gov) · Mechanics lien notice, filing and enforcement deadlines in North Carolina: N.C.G.S. §§44A-12(b), 44A-11.1(a), 44A-11.2(l)(1), 44A-13(a). Verified against this authority on 2026-08-12.
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