11 Tax Deductions Every Contractor Should Know in 2026
Most contractors overpay on taxes because they miss deductions hiding in plain sight. Here are 11 write-offs that can save you thousands, with real examples and dollar amounts so you know exactly what to track.
You Are Probably Leaving Money on the Table
It is April, and you are sitting at your kitchen table with a shoebox of receipts and a growing sense of dread. Your accountant asks about mileage. You shrug. They ask about the home office. You say “I work out of my truck.” They move on. And just like that, you paid the IRS a few thousand dollars more than you needed to.
The average self-employed contractor pays an effective tax rate between 25% and 35% when you include self-employment tax. A contractor doing $200,000 in revenue who misses just $15,000 in deductions is overpaying by roughly $4,500 to $5,250 in taxes.
This guide covers the 11 deductions that matter most for contractors in 2026. Practical, real-world write-offs with dollar amounts and examples so you can have a smarter conversation with your CPA or handle things yourself with confidence.
1. Vehicle and Mileage Expenses
For most contractors, vehicle expenses are the single largest deduction, and the one they most often under-track. The IRS gives you two options:
Standard Mileage Rate: $0.725 per mile for 2026. Drive 25,000 business miles and that is $18,125 in deductions without tracking a single gas receipt.
Actual Expense Method: Track every cost (gas, insurance, repairs, tires, depreciation) and multiply by the percentage of miles driven for business.
A newer, expensive truck with high payments often favors actual expenses. An older, paid-off truck usually favors the standard rate. Run both numbers or have your CPA compare.
A plumber in Houston drives 28,000 business miles per year. At $0.725/mile, that is $20,300 in deductions. At a 30% combined tax rate, that saves $6,090 in taxes. But only if they tracked the mileage.
You need a mileage log that shows the date, starting location, destination, business purpose, and miles driven. Every trip. All year. A mileage tracking app that runs in the background and logs your drives automatically is the easiest way to stay consistent. At the end of the year, you export the log and hand it to your accountant.
2. Tools and Equipment (Section 179)
Every saw, drill, compressor, laser level, and generator you buy for work is deductible. Section 179 lets you deduct the full purchase price in the year you buy it, instead of depreciating it over several years. For 2026, the deduction limit is $2,560,000.
This covers power tools, hand tools, trailers, compressors, generators, welding equipment, vehicles over 6,000 lbs GVWR, software, and safety equipment.
The One Big Beautiful Bill Act (signed July 2025) restored 100% bonus depreciation permanently for qualifying property acquired after January 19, 2025. So in 2026, you can deduct 100% of the cost of new and used equipment in the first year.
Keep every receipt for every tool purchase, no matter how small. That $15 drill bit set and the $8 pack of blades add up. Over a year, small tool purchases can easily total $2,000 to $5,000. At a 30% tax rate, that is $600 to $1,500 in savings.
3. Home Office Deduction
If you write estimates, handle invoicing, schedule crews, order materials, or take client calls from home, you likely qualify. The space just needs to be used regularly and exclusively for business.
Simplified Method: $5 per square foot, up to 300 square feet. Maximum deduction: $1,500.
Regular Method: Calculate the percentage of your home used for business, then apply it to rent or mortgage interest, utilities, insurance, repairs, and depreciation. A 200-square-foot office in a 2,000-square-foot home is 10% of all those costs. If those costs total $24,000/year, that is a $2,400 deduction.
4. Business Insurance Premiums
Every insurance policy you carry for your business is fully deductible: general liability ($500 to $2,500/year for most trades), workers’ comp, commercial auto, professional liability, builder’s risk, inland marine / tools coverage, and surety bond premiums.
A licensed GC with employees can easily pay $8,000 to $20,000 per year in combined insurance premiums. Every dollar is deductible.
If you pay for insurance annually, the full premium is deductible in the year you pay it (for cash-basis taxpayers, which most small contractors are).
5. Materials and Job Supplies
Every material you purchase for a job is deductible: lumber, concrete, drywall, roofing, plumbing fixtures, fasteners, adhesives, safety supplies, cleaning supplies, fuel for generators, and disposable items like drop cloths and plastic sheeting.
The challenge is capturing every receipt. That $47 run to the hardware store for a box of screws and some caulk is easy to forget. Do that twice a week and you have missed $4,800 in deductions by year’s end.
A receipt scanner pays for itself many times over. Snap a photo of every receipt the moment you get it, and it is categorized and stored automatically. SimplyWise’s receipt scanner pulls the vendor, date, amount, and category from the image so you never have to type anything in.
6. Subcontractor Payments
Every dollar you pay to a subcontractor is deductible. If you pay any single sub $600 or more in a calendar year, you must file a 1099-NEC. Failure to file can result in penalties of $60 to $340 per form.
Best practice: Get a W-9 from every sub before their first day on the job. Keep a running list of what you pay each sub throughout the year.
The IRS has been increasing enforcement around worker misclassification. If your “subcontractor” works set hours, uses your tools, and only works for you, the IRS may reclassify them as an employee, which means back taxes, penalties, and interest.
7. Licensing, Certifications, and Continuing Education
All of it is deductible: contractor license fees, renewal fees, continuing education courses, trade certifications (EPA 608, OSHA 30, welding certs), industry conferences and trade shows (including travel and lodging), trade publications, and business-related courses.
A contractor who renews a state license ($300), takes a required CE course ($200), attends a trade show ($1,500 including travel), and maintains two certifications ($400) has $2,400 in deductions from this category alone.
8. Phone and Internet
The business-use portion of your phone bill and internet service is deductible. Most contractors use their phone for business 60-80% of the time. If your monthly phone bill is $100 and you use it 70% for business, that is $840/year in deductions. A separate business phone line is 100% deductible.
Business apps and software subscriptions are also write-offs: estimating tools, accounting software, project management apps, cloud storage, and CRM subscriptions.
9. Retirement Contributions
Retirement contributions are one of the most powerful tax reduction tools available for self-employed contractors.
SEP-IRA: Contribute up to 25% of net self-employment income, up to $72,000 for 2026. The contribution is tax-deductible dollar for dollar, and you have until your tax filing deadline (including extensions) to contribute.
Solo 401(k): Up to $24,500 as an employee deferral, plus up to 25% of net earnings as an employer contribution, for a combined maximum of $72,000 (or $80,000 if you are 50 or older). Also offers a Roth option.
A contractor with $150,000 in net self-employment income contributes $37,500 to a SEP-IRA. At a 30% combined tax rate, that saves $11,250 in taxes, and the money is growing for retirement instead of going to the IRS.
10. Health Insurance Premiums
If you are self-employed and pay for your own health insurance, the premiums are deductible for yourself, your spouse, and your dependents. This includes dental and vision. It is an “above the line” deduction, meaning it reduces your adjusted gross income directly without itemizing.
Self-employed health insurance premiums commonly range from $400 to $900 per month for an individual plan. At the lower end, that is $4,800/year, which translates to roughly $1,440 in tax savings at a 30% rate. Long-term care insurance premiums are also deductible with age-based limits.
11. Business Meals
The meal deduction is 50% for 2026. Deductible meals include meals with clients where business is discussed, meals with subcontractors while planning a project, meals during overnight business travel, and meals at conferences and trade shows.
Document the date, location, who was present, and the business purpose. A receipt alone is not enough.
Meals you eat alone on a job site are generally not deductible unless you are traveling away from your tax home overnight. But lunch with a sub to discuss the project schedule? That is a business meal.
2026 Contractor Tax Deduction Checklist
| Deduction | What to Track | Typical Annual Value |
|---|---|---|
| Vehicle / Mileage | Mileage log or actual expenses | $10,000 – $25,000 |
| Tools & Equipment | Receipts, Section 179 election | $2,000 – $50,000+ |
| Home Office | Square footage, rent/mortgage, utilities | $1,500 – $5,000 |
| Insurance Premiums | GL, workers’ comp, commercial auto, bonding | $3,000 – $20,000 |
| Materials & Supplies | Every receipt from suppliers and hardware stores | Varies by volume |
| Subcontractor Payments | W-9s, payment records, 1099-NEC forms | Varies by volume |
| Licensing & Education | License fees, CE courses, certs, trade shows | $500 – $5,000 |
| Phone & Internet | Monthly bills, business-use percentage | $1,000 – $3,000 |
| Retirement Contributions | SEP-IRA or Solo 401(k) records | $5,000 – $72,000 |
| Health Insurance | Premium statements for self, spouse, dependents | $4,800 – $30,000 |
| Business Meals | Receipts with date, attendees, and business purpose | $500 – $3,000 |
A solo contractor who diligently tracks all 11 categories could easily claim $30,000 to $80,000+ in legitimate deductions. At a 30% combined tax rate, that is $9,000 to $24,000 in tax savings. The only requirement is documentation.
Record-Keeping Tips That Will Save You in an Audit
- Keep receipts for at least 3 years from the date you file the return. For equipment and vehicles, keep records for as long as you own the asset plus 3 years.
- Separate business and personal accounts. Commingling funds is the fastest way to trigger an audit and lose deductions.
- Document the business purpose of every expense. A receipt alone does not prove it was a business expense.
- Use digital records. The IRS accepts digital copies. A clear photo is just as good as the paper original.
- Reconcile monthly. Spend 30 minutes at the end of each month reviewing expenses. Do not wait until April.
Frequently Asked Questions
Capture Every Deduction Automatically
The two biggest contractor deductions are receipts and mileage. SimplyWise scans receipts on the spot and logs miles in the background so nothing slips through at tax time.