Tax deductions trades owners miss
The contractor tax deductions owners miss are rarely exotic. They're small tools that could have been written off at once, the truck costs nobody tracked, the home office used for dispatch, meals with a customer and the qualified business income deduction. Each one needs a record behind it, and the IRS test for all of them is the same: the expense has to be "ordinary and necessary" for your kind of business (Publication 334).
A deduction lowers the income you're taxed on. It doesn't refund what you spent, so none of these is a reason to buy something you don't need.
The deductions and the record each needs
| Deduction | The IRS rule | Record to keep |
|---|---|---|
| Small tools and equipment | De minimis safe harbor: deduct up to $2,500 per invoice or item at once, if you elect it | The invoice, and a book policy in place since January 1 |
| Trucks, upfits and big equipment | 100% bonus depreciation or Section 179 in the first year, or depreciation over time. Vehicles need more than 50% business use, and lighter ones have yearly caps | Invoice, price, the date it went into service and, for vehicles, a mileage log |
| Truck and van use | The IRS mileage rate or actual costs, business share only | A mileage log, plus receipts for actual costs |
| Truck loan interest | The business share, if you're self-employed | Loan statements |
| Business meals with a customer, or while traveling for work | 50% of the cost | Receipt showing where, when, how many people and why |
| Home office | $5 per square foot, up to 300 square feet under the simplified method | Square footage of space used only for business |
| Qualified business income (QBI) | Up to 20% of qualified business income | Your CPA figures it from the return |
Small tools: the de minimis safe harbor
Ladders, drain machines, pressure washers, a jetter attachment: under the de minimis safe harbor, a business without an applicable financial statement, such as an audited one, can deduct up to $2,500 per invoice or item right away instead of depreciating it.
The safe harbor has two conditions. It covers only amounts your books already expense under "a consistent accounting procedure or policy existing at the beginning of the taxable year," and you elect it each year with a statement attached to your return. If your bookkeeper puts every $400 ladder on the balance sheet, the safe harbor can't reach it. Set the policy with your CPA before January 1, then code purchases to match.
Your truck payment isn't the deduction
An owner on a group coaching call was about to sign for two financed trucks because the dealer's 0% offer ended that day. Brandon Vaughn, who coaches home service owners, stopped him to explain what the write-off actually is:
When you buy something whether you finance it or not you are writing off the asset value you're not writing off your payments. So your payments are not write-offs your asset is a write-off.
Publication 946 backs him up: a truck's cost includes what you financed, and depreciation starts when the truck is ready for work. With 100% bonus depreciation now permanent for property acquired after January 19, 2025, that write-off can land in the first year, loan or no loan.
Vehicles have limits of their own, all in the same publication. A pickup or van rated at 6,000 pounds gross vehicle weight or less counts as a passenger automobile, and the depreciation on one is capped each year, bonus or not. The exception is a work vehicle modified so it's unlikely to be used personally: Publication 946 names "installation of permanent shelving and painting the vehicle to display advertising or the company's name." A heavier SUV is capped at $32,000 under Section 179 for 2026 (Rev. Proc. 2025-32), though that cap doesn't apply to a pickup with a cargo bed at least 6 feet long. And if a vehicle is used 50% or less for business, Section 179 is off the table, and usually bonus depreciation too.
What the payments do give you is interest: if you're self-employed, Publication 463 lets you deduct the business share of the interest on the truck loan. The mileage guide covers the choice between the mileage rate and actual costs, which a first-year write-off locks in.
Meals, the home office and QBI
Meals
For 2025 returns, Pub 463 limits business meals to 50%. A restaurant receipt counts as proof when it shows the name and location, the number of people served, and the date and amount, so write the business purpose on it before it goes in the folder.
Home office
The simplified method allows $5 per square foot, up to 300 square feet, but only for space used "exclusively" and "on a regular basis" for the business. A spare room that holds the dispatch desk and the files can qualify; the kitchen table can't. A home office that qualifies as your principal place of business also makes the drive from home to a job deductible.
The QBI deduction
Owners of sole proprietorships, partnerships and S corporations may be able to deduct up to 20% of their qualified business income, according to the IRS, and recent legislation made the deduction permanent (Pub 505). Limits apply at higher taxable incomes, and an S corporation owner's reasonable salary doesn't count as QBI. Your CPA figures it, and since it's a share of profit, it's only as big as the profit your books show.
What doesn't count
The IRS line is simple: if an expense is partly business and partly personal, split it, and "the personal part is generally not deductible" (Pub 334). A family bill paid from the business account is still a family bill, and it comes out of what you pay yourself. Keeping personal spending out of the business accounts also keeps the books clean enough for every deduction above to hold up (here's how to separate them).
Common deduction questions
Is my work phone deductible?
The business share is. If one phone handles dispatch calls and family calls, split the cost by a reasonable business-use percentage and keep the bills that show it.
Should I buy equipment in December to cut my taxes?
Only if you need it. It has to be ready to use by December 31 to count for 2026, and a deduction saves your tax rate on the price, not the price. The year-end checklist walks through that decision.
Where should the receipts live?
In one place, coded the day you buy, so the record exists before anyone asks for it. An electrical contractor with three vans and a supply-house account generates a lot of paper; this receipt system keeps it findable. If you want someone to look for what you've been missing, bring last year's return to a free profit call, or see our tax prep and planning.
