Running a business from home saves on rent — and it can also save on taxes. The IRS allows home-based business owners to deduct a wide range of expenses, from a portion of utilities to business mileage. Yet many owners leave money on the table because they do not know the rules or fear an audit. Here are the home-based business tax deductions you might be missing in 2026, and how to claim them safely.
Table of Contents
- The Home Office Deduction
- Direct vs. Indirect Home Expenses
- Vehicle and Mileage Deductions
- Commonly Overlooked Deductions
- Staying Audit-Safe: Rules and Records
- A Note for Remote Employees vs. Owners
- Key Takeaways
The Home Office Deduction
The centerpiece is the home office deduction. To qualify, part of your home must be used regularly and exclusively as your principal place of business — or as a place where you regularly meet clients — and the space must be a separately identifiable area, like a spare room or a partitioned corner, not the kitchen table. The IRS offers two calculation methods.
The simplified method lets you deduct $5 per square foot of office space, up to 300 square feet, for a maximum $1,500 deduction — no receipts or depreciation math required. The regular method lets you deduct the business percentage of actual expenses (mortgage interest, rent, utilities, insurance, repairs, depreciation), which often yields a bigger deduction for larger spaces or high-cost areas but requires meticulous records. The IRS home office deduction guidance details both methods and the eligibility tests.
Direct vs. Indirect Home Expenses
Under the regular method, expenses fall into two buckets. Direct expenses benefit only the office — repainting the office walls, for example — and are fully deductible. Indirect expenses benefit the whole home — utilities, homeowners insurance, general repairs — and are deductible in proportion to your office’s share of the home, usually measured by square footage.
Many owners forget indirect expenses entirely: a percentage of your internet bill, security system, pest control, and even housecleaning for the office area can qualify. Mortgage interest and real estate taxes claimed here reduce what you claim on Schedule A, so coordinate the two to avoid double-counting. Depreciation on the business portion of your home is allowed but can complicate a future home sale, so discuss it with a tax professional.
Vehicle and Mileage Deductions
If you drive for business — client visits, supply runs, trips to the post office — you can deduct either actual vehicle expenses or the IRS standard mileage rate, which the agency adjusts annually. The mileage method requires a contemporaneous log of each trip’s date, purpose, and miles; apps make this far easier than a paper notebook.
Commuting from home to a regular workplace is not deductible, but for a home-based owner whose home is the principal place of business, trips to clients, suppliers, and temporary work locations generally qualify. Keep the log current — reconstructed logs after the fact are a classic audit failure point. This deduction pairs with your broader profit and loss tracking to keep vehicle costs visible month to month.
Commonly Overlooked Deductions
- Business insurance: premiums for liability, professional, and business property policies are deductible.
- Phone and internet: the business portion of your cell plan and home internet qualifies; a dedicated business line is fully deductible.
- Office supplies and software: subscriptions, apps, postage, and supplies add up fast — track them all.
- Professional services: accounting, legal, and tax-preparation fees for the business are deductible.
- Health insurance: self-employed owners may deduct 100 percent of health insurance premiums for themselves and family as an adjustment to income.
- Retirement contributions: SEP-IRA or Solo 401(k) contributions reduce taxable income dollar for dollar up to annual limits.
- Education: courses and books that maintain or improve skills in your current business qualify.
Staying Audit-Safe: Rules and Records
The home office deduction does not automatically trigger audits the way folklore suggests, but sloppy records do cause problems. Photograph your office setup, keep a floor plan with measurements, and save utility bills and receipts for at least three years. Use a separate bank account and credit card for the business so personal and business spending never mingle — a habit our business credit guide reinforces for good reason. These records also feed directly into accurate quarterly estimated tax calculations, so each payment reflects reality instead of guesswork.
Be honest about exclusive use: a guest room that doubles as an office fails the test. And remember the deduction cannot create a loss beyond your business income in most cases — excess home office expenses generally carry forward rather than offsetting other income.
A Note for Remote Employees vs. Owners
Everything above applies to self-employed owners. W-2 remote employees, however, generally cannot deduct home office expenses on federal returns under current law — the unreimbursed employee expense deduction was suspended. If you are an employee working from home, ask your employer about an accountable reimbursement plan instead of trying to deduct costs yourself.
