25 Self-Employed Tax Deductions for 2026 (With Tracker Template)

Quick answer. Twenty-five deductions self-employed filers commonly use in 2026: home office, vehicle, health insurance premiums, retirement contributions (SEP IRA, solo 401(k), SIMPLE IRA), the QBI deduction, half of self-employment tax, business meals (50 percent), supplies, software, internet, phone, professional services (legal, accounting), education, advertising, contract labor, business travel, equipment, depreciation, business insurance, bank and merchant fees, startup costs, retirement plan setup credit, and the small business health insurance credit. Each gets its own row in our Annual Tax Planner.

In this article

• The 25 deductions, with what each covers, the Schedule C line, and the spreadsheet row that captures it
• The big four (home office, vehicle, health insurance, retirement) get extra detail because they account for most missed dollars
• A worked example for a freelance consultant earning $95,000 net
• Common mistakes and what triggers an audit
• Where to track each one

The 25 deductions

That’s the list. Now let’s look at the four that move the most money.

The big four (where most dollars are missed)

1. Home office

The home office deduction is real and underused, especially since the 2017 rule changes left it intact for self-employed filers (W-2 employees lost it).

Two methods:

Simplified method. $5 per square foot, up to 300 square feet, for a maximum of $1,500. No allocation of utilities, mortgage interest, depreciation, or insurance. Simple, but caps your deduction.

Actual expense method. Allocate a percentage of your home costs (utilities, insurance, mortgage interest, property tax, depreciation, repairs) by the percentage of your home used exclusively and regularly for business. A 200 square foot office in a 2,000 square foot home = 10 percent.

Worked example: Home with $24,000 in annual costs (utilities, insurance, mortgage interest, depreciation). Home office is 10 percent of square footage. Deduction = $2,400. Compared to simplified ($1,000 for 200 sq ft), actual wins by $1,400.

Audit risk: Lower than people think. The “exclusive and regular use” test is the key. A spare bedroom that doubles as a guest room fails. A converted garage office with a desk, chair, and file cabinet (and no other use) passes.

Track it: one row in your Annual Tax Planner labeled “Home office” with the calculated deduction. Keep a folder of supporting docs (utility bills, insurance, mortgage statements) for the actual method.

2. Vehicle

For most self-employed people, the vehicle deduction is the second largest after the home office.

Standard mileage rate. 70 cents per mile in 2026 (rate for business use; check IRS for current year). Multiply business miles by the rate. Done.

Actual expense method. Track total vehicle expenses (gas, maintenance, insurance, depreciation, lease payments) and multiply by business-use percentage. Generally favorable for expensive vehicles or low-MPG vehicles; standard mileage favors fuel-efficient cars and high-mileage drivers.

Worked example: 12,000 business miles at 70 cents = $8,400 deduction (standard mileage). Same vehicle, $9,000 in actual expenses, 60 percent business use = $5,400 deduction. Standard mileage wins by $3,000.

The catch: you have to choose standard mileage in year 1 to use it later. If you start with actual, you’re locked in.

Track it: log every business trip in a mileage tracking sheet (date, destination, purpose, miles). The IRS requires this. The Annual Tax Planner ships with a mileage log tab.

3. Health insurance premiums

If you’re self-employed and pay your own health insurance (or coverage for your spouse, dependents, or children under 27), the premiums are deductible above the line on Schedule 1, Line 17.

This means the deduction reduces your AGI directly, which has downstream effects on every other AGI-tied calculation (medical expense floor, IRA contribution phase-outs, ACA subsidies, etc.).

Limits:

• Can’t exceed your net self-employment income.
• Can’t include any month where you (or your spouse) were eligible for an employer-subsidized plan.
• Long-term care premiums included up to age-based limits.

Worked example: $850/month family premium = $10,200 annual deduction. At a 24 percent marginal bracket, that’s $2,448 in federal tax savings, plus state.

Track it: one row labeled “Health insurance premiums” with the annual total.

4. Retirement contributions

The self-employed have access to retirement vehicles a W-2 employee can only dream about. Three to know.

SEP IRA. Up to 25 percent of net self-employment income, capped at $70,000 in 2026. Easy to set up at any major brokerage in 15 minutes. Best for high earners with no plans to add employees.

Solo 401(k). You contribute as both employee ($23,500 in 2026 elective deferrals, plus $7,500 catch-up at 50 plus) and employer (up to 25 percent of compensation, combined cap $70,000 plus catch-up). Allows Roth contributions on the employee side. Best for moderate-to-high earners who want Roth flexibility.

SIMPLE IRA. Lower limits ($16,500 employee, plus $3,500 catch-up at 50 plus, plus an employer match), but simpler admin if you have employees.

Worked example: Net self-employment income $120,000. Solo 401(k) maxed at $46,500 ($23,500 employee + 23 percent employer max on net SE). At a 24 percent federal bracket, that’s $11,160 in current-year federal tax savings, with the money still yours, growing tax-deferred (or tax-free if Roth).

Track it: one row with the contribution amount, plus a notes column with which plan and which custodian.

The other 21, briefly

I’ll go faster on the rest. Each is a row in your Annual Tax Planner; the dollar impact varies.

Half of self-employment tax (Line 15 Sched 1): Automatic. SE tax is 15.3 percent of 92.35 percent of net SE income. Half is deductible. The Annual Tax Planner calculates this for you.

QBI deduction (Form 8995): 20 percent of qualified business income, with phase-outs starting at $241,950 single / $483,900 MFJ in 2026. For most self-employed people under the threshold, this is a 20 percent off-the-top deduction. Huge.

Business meals: 50 percent deductible. Track each meal with date, attendees, business purpose, and amount. Annual Tax Planner has a meals tab with the 50 percent calculation built in.

Supplies: Office supplies, small tools, anything consumable under $2,500.

Software: Annual or monthly subscriptions (Adobe, QuickBooks, Notion, Zoom Pro, etc.). Increasingly significant; track it.

Internet: Business-use percentage. If you use home internet 60 percent for work, deduct 60 percent of the bill.

Cell phone: Same logic. If you have a dedicated business line, 100 percent. If shared, deduct the business-use percentage.

Legal and professional services: Lawyer fees for business contracts, accountant for tax prep (the portion attributable to the business), bookkeeping services.

Education: Courses, conferences, books, subscriptions that maintain or improve your current business skills. New career skills don’t qualify.

Advertising: Google Ads, Facebook Ads, business cards, website hosting, domain registration, SEO contractors.

Contract labor: Payments to other contractors. Issue 1099-NEC for any contractor paid $600 or more in the year.

Business travel: Out of town travel for business. Lodging, transportation, 50 percent of meals. The trip must have a business purpose; mixed business-leisure trips require allocation.

Equipment (Section 179): Computers, cameras, vehicles over 6,000 lbs GVWR, machinery. Deduct up to $1,160,000 in 2026. Most self-employed people will never approach the limit.

Depreciation: For assets not Section 179’d, depreciate over their useful life. Form 4562 handles it. Tax software (or your accountant) does the math.

Business insurance: Errors and omissions, general liability, cyber, business property, business auto. All deductible.

Bank and merchant fees: Business bank account fees, Stripe fees, PayPal fees, Square fees. They add up; track them.

Startup costs: First $5,000 deductible in year 1, rest amortized over 15 years. Includes legal fees to incorporate, market research, initial advertising before opening.

Retirement plan setup credit (Form 8881): Up to $5,000 per year for the first three years of a new retirement plan. New for many freelancers post-SECURE Act.

Small business health insurance credit (Form 8941): If you have employees and pay at least 50 percent of their health insurance premiums, you may qualify for a credit up to 50 percent of premiums paid.

A worked example: $95k freelance consultant

Anna is a freelance UX consultant. 2026 numbers:

Without aggressive deduction tracking and retirement contributions, Anna would have paid roughly $13,000 to $15,000 more in federal tax. The retirement contribution alone (Solo 401(k) at $23,500) saved her around $5,400 in current-year tax while the money stays hers.

Common mistakes

• Mixing personal and business expenses. A separate business bank account and credit card eliminates 90 percent of audit risk and end-of-year reconciliation pain.
• No documentation for vehicle mileage. The IRS requires a contemporaneous log. “I drove a lot” doesn’t qualify. Apps (MileIQ, Everlance) or a simple spreadsheet log work.
• Deducting commuting. Driving from your home to your regular workplace isn’t deductible. Driving from your home office to a client site is.
• Home office that fails the exclusive use test. A kitchen table, a corner of the bedroom, a couch with a laptop don’t qualify. A defined space used only for business does.
• Not contributing to a retirement plan. The biggest missed deduction for self-employed people. Even $5,000 to a SEP IRA at year end is better than nothing.

Where to track all 25

The Annual Tax Planner has a dedicated row for each of the 25 deductions above, plus the Schedule C line mapping, plus a quarterly estimates calculator that uses your YTD deduction totals to project your annual tax liability. $29 once.

If you’d rather build it, the Tax Deduction Tracker post from earlier this week walks through the seven-column row schema you’d use: see Tax Deduction Tracker in Google Sheets.

For quarterly due dates and safe harbor math, see the Quarterly Estimated Tax Spreadsheet walkthrough.

Get the template

• Annual Tax Planner — Schedule A and Schedule C categories with quarterly estimate math built in.
• Annual Tax Planner — Schedule A and Schedule C categories with quarterly estimate math built in.