Maximizing your tax deductions is one of the most impactful things you can do as a small business owner. Every dollar you deduct reduces your taxable income — and your tax bill. Here’s every deduction available to small businesses in 2026.
Quick answer: Key 2026 deductions: home office ($1,500 simplified), mileage ($0.70/mile), Section 179 ($1.16M), startup costs ($5,000), self-employed health insurance (100% of premiums).
Home Office Deduction
Two Methods to Calculate
Method
How It Works
Max Deduction
Best For
Simplified method
$5 per square foot of home office
$1,500 (300 sq ft max)
Easy calculation, small offices
Regular method
Actual expenses × business use percentage
No cap (based on actual costs)
Larger offices, high mortgage/rent
Regular Method Example
Expense
Annual Amount
Business Use % (15%)
Deductible Amount
Mortgage interest or rent
$18,000
15%
$2,700
Property taxes
$4,000
15%
$600
Homeowners insurance
$1,500
15%
$225
Utilities (electric, gas, water)
$3,600
15%
$540
Internet
$1,200
15%
$180
Home repairs/maintenance
$2,000
15%
$300
Total home office deduction
$4,545
Business use percentage = office square footage ÷ total home square footage
Vehicle and Transportation Deductions
Two Methods for Vehicle Expenses
Method
2026 Rate/Approach
Best For
Standard mileage rate
70 cents per mile (estimated 2026)
Most people; simpler calculation
Actual expense method
Track all car costs × business use %
High vehicle costs, luxury vehicles
Standard Mileage Deduction Examples
Annual Business Miles
Rate (2026 est.)
Deduction
5,000 miles
$0.70/mile
$3,500
10,000 miles
$0.70/mile
$7,000
15,000 miles
$0.70/mile
$10,500
20,000 miles
$0.70/mile
$14,000
30,000 miles
$0.70/mile
$21,000
What Counts as Business Mileage
Deductible
Not Deductible
Driving to client meetings
Your regular home-to-office commute
Trips to the bank, post office, supply store
Personal errands combined with business trips
Visiting job sites or properties
Commuting to a co-working space (if it’s your regular office)
Travel between two business locations
Driving to lunch (unless a business meal)
Driving to networking events
Weekend drives that aren’t business-related
Office Supplies and Equipment
Section 179 and Bonus Depreciation
Deduction Type
2026 Limit
What It Does
Section 179
$1,250,000 (estimated)
Deduct the full cost of qualifying equipment in year one
Bonus depreciation
60% (2026, phasing down)
Deduct 60% of cost in year one, depreciate the rest
De minimis safe harbor
$2,500 per item
Expense items costing $2,500 or less without capitalizing
Common Equipment Deductions
Item
Typical Cost
Deduction Method
Computer/laptop
$1,000-$3,000
Section 179 or de minimis
Monitor(s)
$200-$800
De minimis
Office furniture (desk, chair)
$300-$2,000
De minimis or Section 179
Printer/scanner
$100-$500
De minimis
Phone
$800-$1,400
De minimis (% business use)
Software subscriptions
$50-$500/month
Currently deductible expense
Tools and equipment
Varies
Section 179
Vehicle (business use only)
$30,000-$80,000
Section 179 (limits apply to vehicles)
Operating Expense Deductions
Fully Deductible Business Expenses
Expense Category
Examples
Notes
Advertising and marketing
Google Ads, Facebook Ads, print materials, website costs
100% deductible
Professional services
Accounting, legal, consulting, bookkeeping
100% deductible
Insurance premiums
General liability, E&O, property, cyber
100% deductible
Office supplies
Paper, ink, postage, pens, cleaning supplies
100% deductible
Software and subscriptions
QuickBooks, Adobe, Slack, Zoom, Canva
100% deductible
Bank and merchant fees
Credit card processing, bank account fees
100% deductible
Rent (office/retail space)
Monthly lease payments
100% deductible
Utilities (business location)
Electric, water, gas, internet, phone
100% deductible
Business travel
Flights, hotels, rental cars for business trips
100% deductible
Education and training
Courses, conferences, books, certifications
Must relate to current business
Licenses and permits
Business license, professional certifications
100% deductible
Shipping and postage
Mailing products, shipping supplies
100% deductible
Repairs and maintenance
Equipment, vehicle, office repairs
100% deductible
Contract labor
Freelancers, independent contractors (1099)
100% deductible
Meals and Entertainment
What’s Deductible in 2026
Expense
Deductible?
Percentage
Business meals with clients/prospects
Yes
50%
Meals while traveling for business
Yes
50%
Office snacks and coffee for employees
Yes
50%
Team meals (on-site, not entertainment)
Yes
50%
Holiday party for all employees
Yes
100%
Company picnic/outing (all employees invited)
Yes
100%
Entertainment (sporting events, concerts)
No
0% (not deductible since 2018)
Golf with clients
No (entertainment)
0%
Meals at entertainment events (separately stated)
Yes
50%
Retirement Contributions
Retirement Plan Deduction Limits (2026)
Plan Type
Max Contribution
Best For
SEP IRA
25% of net self-employment income (up to $70,000 est.)
Solo business owners wanting simplicity
Solo 401(k)
$23,500 employee + 25% employer (up to $70,000 est. total)
Solo owners wanting maximum contributions
SIMPLE IRA
$16,500 employee + 3% match
Small businesses with a few employees
Traditional or Roth IRA
$7,000
Additional savings on top of other plans
Tax Savings from Retirement Contributions
Contribution
Tax Bracket
Tax Savings
$7,000 (IRA)
22%
$1,540
$23,500 (Solo 401k employee)
24%
$5,640
$50,000 (Solo 401k total)
32%
$16,000
$70,000 (SEP IRA or Solo 401k max)
35%
$24,500
Health Insurance Deduction
Self-Employed Health Insurance
Coverage Type
Average Annual Cost
Tax Deduction (24% bracket)
Individual plan
$7,000-$10,000
$1,680-$2,400
Family plan
$18,000-$25,000
$4,320-$6,000
HSA contribution (individual)
$4,300
$1,032
HSA contribution (family)
$8,550
$2,052
Dental/vision premiums
$500-$2,000
$120-$480
Total possible health deduction
$25,000-$35,550
$6,000-$8,532
Self-employed individuals can deduct 100% of health insurance premiums as an adjustment to income (not an itemized deduction)
Interest and Loan Costs
Deductible Business Interest
Type of Interest
Deductible?
Notes
Business loan interest
Yes, 100%
SBA loans, term loans, lines of credit
Business credit card interest
Yes, 100%
Only the business portion
Mortgage on business property
Yes, 100%
Commercial real estate
Vehicle loan interest (business use)
Yes, business %
Must use actual expense method (not mileage)
Student loan interest
Separate deduction
Up to $2,500 personal deduction; not a business deduction
Organizational costs (legal fees, state filing, permits)
Up to $5,000
Amortize excess over 15 years
Total first-year deduction
Up to $10,000
The $5,000 deduction phases out dollar-for-dollar once total startup costs exceed $50,000
Tax Deduction Summary by Category
Estimated Annual Savings for a Solo Business Owner
Scenario: Sole proprietor, $100,000 net income, 24% marginal rate, home office
Deduction
Annual Amount
Tax Savings (24%)
Home office (simplified, 300 sq ft)
$1,500
$360
Vehicle (10,000 business miles)
$7,000
$1,680
Health insurance (individual + HSA)
$11,300
$2,712
Retirement (Solo 401k)
$23,500
$5,640
Self-employment tax deduction (50%)
~$7,065
$1,696
Software subscriptions
$2,400
$576
Professional services (CPA, legal)
$3,000
$720
Business meals (50%)
$1,200
$288
Education/training
$1,500
$360
Advertising
$3,000
$720
Equipment (Section 179)
$2,500
$600
Other operating expenses
$3,000
$720
Total estimated deductions
$66,965
$16,072
Record-Keeping Requirements
IRS Documentation Standards
Expense Type
Required Records
Retention Period
Income
Invoices, bank deposits, 1099s
3-7 years
Expenses under $75
Bank/credit card statement
3 years
Expenses over $75
Original receipt with details
3 years
Vehicle (mileage)
Mileage log with date, destination, purpose
3 years
Meals
Receipt + notes (who, business purpose)
3 years
Home office
Floor plan, utility bills, mortgage/rent records
3 years
Equipment/depreciation
Purchase records, depreciation schedules
Life of asset + 3 years
Travel
Receipts, itinerary, business purpose documentation
3 years
Employee records
W-4s, payroll records, benefits
4 years after tax due/paid
The single largest deduction for most self-employed businesses is the QBI (Qualified Business Income) deduction, which can reduce taxable income by 20% without additional spending. Vehicle expenses qualify under the IRS standard mileage rate or the actual expense method — both are covered in detail at that article. If you work from home, the home office deduction adds either $5/sq ft (simplified) or the actual business-use percentage of home costs.
WealthVieu researches and writes data-driven personal finance guides using primary sources including the IRS, Bureau of Labor Statistics, Federal Reserve, and Census Bureau.
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