You do not need a business license to write off expenses on your federal tax return. The IRS decides whether your expenses are deductible based on whether you are actually running a profit-seeking trade or business, not on whether you have registered with a city or county. Freelancers, consultants, and side-business owners routinely and legally deduct expenses without ever obtaining a municipal permit.
That does not mean local licensing is meaningless. It means the two systems answer different questions. Federal deductibility lives in the tax code. Business licensing lives in local regulation. Confusing them is how people either pay too much tax or run into local fines they did not see coming.
What the Federal Rule Actually Says
Business deductions come from Internal Revenue Code Section 162, which allows you to subtract any expense that is “ordinary and necessary” for your trade or business.1Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses An ordinary expense is one that is common in your line of work. A necessary expense is one that is helpful and appropriate for what you do. Neither word means the expense must be unavoidable. A graphic designer buying stock photo subscriptions qualifies even though free alternatives exist.
Notice what Section 162 does not mention: permits, registrations, licenses, zoning approvals, or any form of local government paperwork. The IRS looks at whether you are actively conducting business, seeking clients, delivering services, or making sales. A freelance web developer earning income from three clients but who never filed for a city business license can still deduct internet costs, software subscriptions, and a dedicated home office.
The reverse is also true. Holding a business license does not automatically entitle you to deductions. If you registered an LLC but never pursued revenue, the IRS will not treat your spending as deductible business expenses. The activity itself has to look and function like a business.
The Test That Actually Decides Your Deductions
Most deduction disputes are not about licensing. They are about whether the IRS considers your activity a business or a hobby. Section 183 of the Internal Revenue Code draws that line, and landing on the wrong side of it is far more costly than any missing permit.2Office of the Law Revision Counsel. 26 USC 183 – Activities Not Engaged in for Profit
If the IRS classifies your activity as a hobby, you cannot deduct any of the related expenses. This is not a partial restriction. It is a complete shutout. The ability to deduct hobby expenses up to hobby income was eliminated in 2018 and that change was recently made permanent. So if you sell handmade jewelry at a loss year after year and the IRS calls it a hobby, every dollar you spent on materials, booth fees, and shipping is nondeductible, even though you reported the income.
The Three-of-Five Profit Presumption
The IRS presumes your activity is a for-profit business if it generated a net profit in at least three of the last five tax years.2Office of the Law Revision Counsel. 26 USC 183 – Activities Not Engaged in for Profit Meeting this test does not guarantee you are safe, because the IRS can still challenge you, but it shifts the burden. The agency has to prove you are not running a real business, rather than you having to prove that you are. Failing the test does not automatically make your activity a hobby either. You just need other evidence to back up your profit motive.
What the IRS Looks At Instead
When the profit test does not settle things, the IRS weighs a set of factors. No single factor decides the outcome, and the agency looks at the whole picture:3Internal Revenue Service. Know the Difference Between a Hobby and a Business
- Whether you conduct the activity in a businesslike manner, with accurate books and records, and adjust your methods to improve profitability.
- Whether you have the expertise, or have consulted advisors with expertise, needed to make the activity profitable.
- Whether you devote substantial personal time and effort, or treat the activity as an afterthought.
- Whether you have taken a similar activity from unprofitable to profitable in the past.
- Whether occasional profits are offset by outsized losses year after year.
- Whether current losses are normal for a business in its early years, or have persisted well beyond a reasonable ramp-up period.
- Whether you expect to profit from the rising value of assets used in the activity, like land or equipment.
- Whether the activity has significant recreational appeal suggesting personal enjoyment is the real motivation.
The strongest thing you can do, license or no license, is keep thorough records, write a business plan, and document your marketing efforts. Those steps show the IRS you are operating with intent to profit, which matters far more than any municipal filing.
Why Local Licenses Still Matter
Business licenses exist for a different purpose than tax compliance. They are regulatory tools managed by cities and counties to ensure businesses meet local zoning, health, and safety requirements. A home-based bakery might need a food handler’s permit. A contractor might need an occupational license proving certain training. These permits are aimed at public protection and have nothing to do with the IRS.
Operating without a required local license can result in fines or a cease-and-desist order from local authorities. Those consequences are real, and you should research your local requirements. But a municipal penalty for operating without a permit does not disqualify you from claiming legitimate business expenses on your federal return. The IRS focuses on the financial substance of your business activity, not your local administrative standing.
One useful wrinkle: the cost of obtaining a business license or permit is itself a deductible business expense on Schedule C. The license is not required for deductions, but if you get one, the fee reduces your taxable income.
Costs You Paid Before Opening
Money you spent before your first sale is not automatically lost. Pre-launch costs like market research, website development, initial inventory, and professional training are called start-up expenditures and are deductible under Section 195 of the Internal Revenue Code.4Office of the Law Revision Counsel. 26 USC 195 – Start-Up Expenditures
In the tax year your business begins operating, you can immediately deduct up to $5,000 of start-up costs. That $5,000 allowance shrinks dollar-for-dollar once your total start-up spending exceeds $50,000, and it disappears entirely at $55,000. Anything you cannot deduct immediately gets spread evenly over 180 months, starting in the month your business launches.4Office of the Law Revision Counsel. 26 USC 195 – Start-Up Expenditures
These are not ongoing operating expenses under Section 162. They are the costs of investigating and creating a business that does not yet exist. Once your business is actively running, your expenses shift to the ordinary-and-necessary framework. None of this hinges on whether you hold a business license. It depends on when you actually begin operations.
How You Report the Deductions
Sole proprietors and single-member LLC owners report business income and expenses on Schedule C (Form 1040).5Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss from Business (Sole Proprietorship) You enter your gross receipts at the top, then categorize expenses across specific lines for advertising, supplies, travel, and other costs.6Internal Revenue Service. Instructions for Schedule C (Form 1040) (2025) The form also asks for a six-digit principal business activity code that matches your industry and a short description of what you do.
The IRS does not require any specific bookkeeping system, but you need enough documentation to prove every deduction if questioned. Keep receipts, bank statements, and clear records of what each expense was for. That paper trail also doubles as evidence of businesslike conduct if the hobby-versus-business question ever comes up.
Do You Need an EIN?
An Employer Identification Number is a federal tax ID for businesses, and many new sole proprietors assume they cannot deduct anything without one. A sole proprietor with no employees can use their Social Security number on Schedule C and skip the EIN entirely. You need an EIN when you hire employees or open a business retirement plan.7Internal Revenue Service. Employer Identification Number (EIN) Requirements Some banks also require one to open a business checking account, even when the IRS does not.
Applying is free and takes minutes on the IRS website. There is no downside to getting one early. It keeps your Social Security number off invoices and business paperwork, which is a practical privacy benefit even when it is not legally required.