Yes. You can deduct business expenses without an LLC, because the IRS automatically treats anyone earning self-employment income as a sole proprietor and gives sole proprietors the same expense deductions available to formal business entities. You report the income and the deductions on Schedule C attached to your personal Form 1040, and income tax applies only to what’s left after those deductions.
Why No Business Entity Is Required
If you work for yourself and haven’t registered anything with your state, the IRS defaults you into sole proprietor status. There’s no form to file, no fee, and no separate tax return. You and the business are one taxable unit.1Internal Revenue Service. Sole Proprietorships
The deduction itself comes from IRC Section 62, which subtracts trade or business expenses from gross income when calculating adjusted gross income.2Office of the Law Revision Counsel. 26 U.S. Code 62 – Adjusted Gross Income Defined The statute doesn’t ask what kind of entity you are. If you carry on a trade or business, the deduction is yours. An LLC changes your liability exposure and, sometimes, your state filings; it does not unlock federal deductions that were closed to you before.
What the IRS Requires for Each Expense
Every expense you claim has to pass a two-part test under IRC Section 162: it must be ordinary (common and accepted in your line of work) and necessary (helpful and appropriate for the business).3Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses Both prongs have to be met.
“Ordinary” doesn’t require the expense to be routine. It just means someone in your industry wouldn’t find it strange. A freelance photographer buying a lens is ordinary; that same photographer deducting scuba gear probably isn’t, unless underwater photography is the business. “Necessary” is a lower bar than the word suggests: helpful and appropriate is enough, not indispensable.4eCFR. 26 CFR 1.162-1 – Business Expenses The amount also has to be reasonable. A laptop for your consulting work deducts cleanly; a $15,000 gold-plated model invites questions.
The Hobby Line You Don’t Want to Cross
The bigger threat to your deductions isn’t whether you have an LLC. It’s whether the IRS thinks you’re running a business at all. IRC Section 183 blocks deductions for activities “not engaged in for profit.”5Office of the Law Revision Counsel. 26 USC 183 – Activities Not Engaged in for Profit If your activity shows a profit in at least three of the last five tax years, the IRS generally presumes it’s a business. Falling short doesn’t automatically make it a hobby, but it puts the burden on you to prove profit motive through records, businesslike operations, expertise, and time invested. Reclassification as a hobby wipes out the ability to use those expenses to offset other income.
Deductions You Can Take as a Sole Proprietor
Qualified Business Income Deduction
Under IRC Section 199A, you can deduct up to 20% of your qualified business income directly from taxable income, without spending an extra dollar to earn it.6Office of the Law Revision Counsel. 26 USC 199A – Qualified Business Income On $80,000 of Schedule C net profit, that’s up to $16,000 shaved off taxable income. No LLC required. For 2026, the deduction begins phasing out for certain service businesses (law, accounting, consulting, medicine) once taxable income exceeds roughly $203,000 for single filers or $406,000 for joint filers.
Self-Employed Health Insurance
If you pay for your own health coverage and aren’t eligible for a subsidized plan through a spouse’s employer, you can deduct 100% of the premiums for yourself, your spouse, your dependents, and children under 27. It’s an adjustment to income calculated on Form 7206 and reported on Schedule 1.7Internal Revenue Service. Instructions for Form 7206 The catch: any month you were eligible for a subsidized employer plan is a month you can’t claim.
Retirement Contributions
Sole proprietors have access to the same tax-advantaged retirement accounts that entity owners use. A SEP IRA allows contributions of up to 25% of net self-employment earnings, capped at $72,000 for 2026.8Internal Revenue Service. SEP Contribution Limits (Including Grandfathered SARSEPs) A solo 401(k) is another option, useful when you want to shelter more of a modest profit through employee deferrals in addition to employer-style contributions.9Internal Revenue Service. One-Participant 401(k) Plans Either reduces taxable income for the contribution year.
Home Office
If part of your home is used exclusively and regularly as your principal place of business, a portion of your housing costs deducts.10Internal Revenue Service. Topic No. 509, Business Use of Home “Exclusively” is doing real work in that sentence. A dining table your kids also use for homework doesn’t qualify.
Two methods are available. The regular method allocates actual costs (mortgage interest, utilities, insurance, repairs) by the square footage used for business. The simplified method skips the math and pays $5 per square foot, up to 300 square feet, for a $1,500 ceiling.11Internal Revenue Service. Simplified Option for Home Office Deduction Simplified is easier to document; the regular method usually produces a larger number when housing costs are substantial.
Vehicle Expenses
Business driving deducts either by actual expenses (gas, insurance, depreciation, repairs) or by the standard mileage rate, which is 72.5 cents per mile for 2026.12Internal Revenue Service. 2026 Standard Mileage Rates Commuting between home and a regular workplace doesn’t count; driving to clients, supply pickups, or a second work location does. You need a contemporaneous log showing dates, destinations, business purpose, and miles. Reconstructing that log after the fact is where most vehicle deductions unravel in an audit.
Half of Self-Employment Tax
Half of the self-employment tax you owe deducts as an adjustment to income on Schedule 1.13Internal Revenue Service. Topic No. 554, Self-Employment Tax It doesn’t appear on Schedule C, which is why people miss it. On $60,000 of net profit, self-employment tax runs roughly $8,478, and you’d deduct about $4,239 from your income.
How You Report the Deductions
Schedule C is where the numbers land. Income goes at the top, deductions in Part II, and the net figure flows to Form 1040 to drive both income tax and self-employment tax.14Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss from Business (Sole Proprietorship) The form asks for a business name (your own name works if you don’t use a trade name), an address, and a six-digit Principal Business Activity code identifying your industry. Expenses drop into named categories on numbered lines, and anything that doesn’t fit goes on Line 27a with a short description in Part V. Categorizing accurately doesn’t change the total but reduces the odds of an automated IRS notice.
The Taxes You Still Owe
Deductions reduce your income tax. They don’t erase self-employment tax, and that’s the surprise for many first-year sole proprietors.
Once net earnings from self-employment reach $400, self-employment tax applies at 15.3%, covering both halves of Social Security (12.4%) and Medicare (2.9%).15Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) You first multiply net earnings by 92.35% to get the amount actually subject to the tax.13Internal Revenue Service. Topic No. 554, Self-Employment Tax The Social Security portion applies only up to a wage base of $184,500 for 2026.16Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet Medicare has no cap, and an extra 0.9% surtax kicks in once total earnings exceed $200,000 (single) or $250,000 (married filing jointly). The tax is calculated on Schedule SE.
Quarterly Estimated Payments
Without an employer withholding taxes from a paycheck, you pay as you go through quarterly estimates. For tax year 2026 the deadlines are:17Internal Revenue Service. 2026 Form 1040-ES – Estimated Tax for Individuals
- Q1: April 15, 2026
- Q2: June 15, 2026
- Q3: September 15, 2026
- Q4: January 15, 2027
You can skip the January payment if you file your 2026 return and pay in full by February 1, 2027. To avoid the underpayment penalty, pay at least 100% of last year’s total tax or 90% of this year’s, whichever is less. If prior-year AGI was above $150,000 (or $75,000 if married filing separately), the safe harbor rises to 110% of last year’s tax.18Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
Records That Protect What You Deduct
A deduction the IRS accepts and a deduction the IRS disallows usually differ by paperwork. Keep receipts, bank statements, invoices, canceled checks, and a contemporaneous mileage log for vehicle use. Hold onto the records for at least three years after filing.19Internal Revenue Service. 20Internal Revenue Service. 2026 Publication 1099 Missed 1099s bring their own penalties and can prompt the IRS to look harder at everything else you filed.