Two things decide whether a job in Louisiana makes you money: getting the license your work needs, and setting aside the right tax. Louisiana 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 Louisiana.
Tax in Louisiana
Louisiana has a flat 3% 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, Louisiana 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. Local parish taxes.
Work out what to hold back on the Tax Set-Aside Calculator, which runs the federal and self-employment numbers for Louisiana.
Getting paid: liens and retainage
A mechanic's lien is the tool that actually gets a Louisiana contractor paid, and Louisiana runs it on a notice-driven schedule rather than a simple countdown. Everything hangs on whether a Notice of Termination gets filed. If it does: a subcontractor has 30 days from it, a general contractor 60. If it does not: 6 months from substantial completion or abandonment for a subcontractor, 7 months for a general contractor. Those short windows only apply where a notice of contract was filed at the start (9:4822). Miss the window and you usually lose the lien entirely, so the dates matter.
Enforcing it has its own clock. 1 year from filing your statement of claim (9:4823). Filing suit is not the end of it - unless you also record a notice of pendency of action within that same year, the recorded privilege stops having effect against third parties, so a buyer or lender can take free of it (9:4833(E)). Work out your dates on the Lien Deadline tool, and if they are close, get an attorney to confirm them against the statute (La. R.S. 9:4804, 9:4822, 9:4823, 9:4833).
On money held back as retainage, this is our plain-English summary for Louisiana. NOT VERIFIED. No citation on this row at all: it is carried from the June 2026 spine reconciliation and has never been read against a Louisiana statute here. The escrow, the $50,000 and the $500,000 both come from the same unread summary, and the step-down records no mechanism.
- Private work: Held in escrow on jobs over $50,000.
- Public work: 10%, dropping to 5% on jobs of $500,000 and up.
- Release (unconfirmed): About 45 days.
Check the Retainage Calculator before you sign a contract that holds back more.
There is no Louisiana retainage letter on this site, and the NOT VERIFIED line above is why. A letter that tells the party holding your money what to hand over only gets written over a row that has been read against the statute in full. The Document Hub carries the forms that do not turn on a state rule.
Do you need a license in Louisiana?
Louisiana requires a state contractor license to take building work on. The threshold that triggers it: Commercial $50,000 or more; new residential $75,000 or more; home improvement $7,500 or more (upper cap REMOVED by Act 422 of 2025). Working unlicensed when your job needs a license is the expensive mistake here. Act 422 of 2025, effective 1 Aug 2025, also raised net worth from 10,000 to 50,000 and added Mold Remediation and Home Improvement as new major license classifications. 37:2156.1(H) preempts local and parish regulatory EXAMINATION authority over statewide-licensed mechanical, plumbing and electrical contractors. The license comes from Louisiana State Licensing Board for Contractors. Louisiana 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
Louisiana 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, excluding Part I Administration and Part VIII Electrical, and with R301.2.1.1 wind design criteria taken from the 2003 edition
- Electrical: 2020 (governs all electrical work including one- and two-family dwellings, because the IRC's electrical part is not adopted)
- Energy: 2021 (effective 1 July 2023)
- Plumbing: 2021 IPC (with Louisiana amendments)
Louisiana adopts one statewide package and preempts local variation: every municipality and parish must enforce these codes and only these codes, so there is nowhere in the state without a code and nothing local to check beyond administration. Two details matter more than the edition numbers. The IRC's electrical part is deliberately not adopted, so house wiring follows the NEC. And the wind design criteria at R301.2.1.1 are frozen at the 2003 edition of that section by statute, inside an otherwise 2021 code. Since 1 August 2026 the adopting body is a new Louisiana Uniform Construction Code Commission in the Governor's Office, which must review each code within five years of its publication.
Source: R.S. 37:3727 et seq. as re-created by Act 881 of 2026, formerly R.S. 40:1730.21 to 40:1730.40.2; Act 635 of 2022 (energy); Louisiana Administrative Code title 17 part I (plumbing); Louisiana State Fire Marshal code list. Read against that source on 2026-08-25.
Check a specific job on the permit tool.
Pay and workers' comp
The minimum wage in Louisiana is the federal $7.25 an hour. Louisiana has NO state minimum wage law. The $7.25 reaches you only through the federal FLSA, so it binds only FLSA-covered employment. Whether it binds a particular job turns on whether the FLSA reaches that employment, which is the part most people miss. Check a rate on the minimum-wage tool.
Workers' comp rates in Louisiana 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 $5,000 in Louisiana's City Court small claims / parish JP 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 10 years to sue you over the work under a written contract in Louisiana, with an absolute cutoff 5 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 Louisiana?
Louisiana has a flat 3% 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 Louisiana?
Yes. Louisiana requires a state contractor license. The threshold: Commercial $50,000 or more; new residential $75,000 or more; home improvement $7,500 or more (upper cap REMOVED by Act 422 of 2025). It is issued by Louisiana State Licensing Board for Contractors.
What is the small claims limit in Louisiana?
You can sue for up to $5,000 in Louisiana's City Court small claims / parish JP court. The filing fee is typically $35 to $150. Larger claims go to regular civil court.
How long do I have to file a mechanic's lien in Louisiana?
Louisiana does not run a simple countdown. Everything hangs on whether a Notice of Termination gets filed. Work the exact dates out on the Lien Deadline tool and confirm them against the statute before you rely on them.
What is the minimum wage in Louisiana?
$7.25 an hour, the federal floor. Louisiana does not set a higher rate of its own, so that floor reaches a worker through federal FLSA coverage rather than through state law. Check a specific job on the minimum-wage tool.
What building code does Louisiana use?
Louisiana adopts statewide. Homes: 2021, excluding Part I Administration and Part VIII Electrical, and with R301.2.1.1 wind design criteria taken from the 2003 edition. Electrical: 2020 (governs all electrical work including one- and two-family dwellings, because the IRC's electrical part is not adopted). Editions move, so confirm yours with the building department before you price a job.
The honest bit
These are the 2026 rules for Louisiana 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 Louisiana tax and licensing agencies, and your local building department) or with a professional. Where Louisiana 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
- Louisiana contractor licensing authority · Louisiana contractor licensing authority. Who must hold a contractor or trade license in Louisiana, and the licensing instrument (https://www.nascla.org/commercial-exam-participating-state-agencies/louisiana-state-licensing-board-contractors)
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