The short answer
Setting up a Louisiana HVAC business on a solid financial footing means forming your entity, getting an EIN from the IRS, opening a dedicated business bank account, registering for Louisiana sales tax, and starting clean books from day one. Most of these are simple, one-time steps. The mistake new contractors make is running money through a personal account and reconstructing the books at tax time. Set it up right once and you save yourself years of cleanup.
| Step | What it is | Where |
|---|---|---|
| Form your entity | LLC or other structure for liability and clarity | Louisiana Secretary of State |
| Get an EIN | Your business tax ID | IRS, free, online |
| Open a business bank account | Keeps business and personal money separate | Your bank |
| Register for sales tax | So you can collect and remit correctly | Louisiana Department of Revenue |
| Set up your books | Chart of accounts and a system, ideally Xero | Day one |
Trade licensing is a separate matter handled through the Louisiana State Licensing Board for Contractors, and the requirements depend on the type and size of work you do. Check with the board directly so you are covered before you bid.
If you take one thing from this, take this: do not run business income and expenses through your personal account. Mixed money is the root of nearly every bookkeeping nightmare. It makes your books impossible to trust, your taxes harder to file, and your liability protection weaker. A dedicated business account and a business card fix it instantly. Every dollar in and out has a clean place to live, and your books practically build themselves.
Louisiana's state sales tax rate is 5 percent, and combined state and local rates here are among the highest in the country. As an HVAC contractor you will have work that is taxable and work that is not, depending on whether you are installing into real property or repairing movable equipment. Registering with the Louisiana Department of Revenue and setting your books up to separate taxable from non-taxable revenue from the beginning keeps you out of trouble later. Sales tax you collect is not your money, so keep it tracked and set aside.
What do I need to start an HVAC business in Louisiana?
On the financial side: an entity, an EIN, a business bank account, sales tax registration with the Louisiana Department of Revenue, and a bookkeeping system. Trade licensing is handled separately through the Louisiana State Licensing Board for Contractors.
Do I need an EIN for my HVAC business?
An EIN is your business tax ID, it is free from the IRS, and you will need it to open a business bank account, run payroll, and handle taxes. Get one early.
Should HVAC contractors use a separate business bank account?
Yes, always. Mixing business and personal money makes your books unreliable, complicates taxes, and weakens your liability protection.
This article is general information, not legal or tax advice. Confirm your specific setup with the appropriate Louisiana agencies and a qualified professional.
Jeremy Brewer is the founder of 911 Bookkeepers LLC in Baton Rouge, Louisiana. He came up through the HVAC trade and works as a licensed paramedic in EMS. He is a Xero Certified Advisor. 911 Bookkeepers is built for the trades.
Book a free 30-minute financial checkup and find out exactly where your business stands.