General contractors run one of the most expense-heavy businesses in America. Every job site visit, every tool purchase, every subcontractor payment — all of it has tax implications. The problem isn't that the deductions don't exist. The problem is that most GCs are running lean on documentation and working with accountants who don't specialize in construction.
We've worked with general contractors across North Carolina and the pattern is consistent: they're leaving thousands on the table every single year. Here are the 10 deductions that make the biggest difference.
Job-site travel, supply runs, client meetings, permit office visits, and any other business-related driving. Every mile counts. The 2026 IRS standard mileage rate is 70¢ per mile.
No mileage log. Mixing personal and business miles in the same vehicle. Using the standard rate when the actual expense method would yield a larger deduction — or vice versa.
If your truck is used more than 80% for business, the actual expense method often beats the standard rate. That means deducting gas, insurance, maintenance, depreciation, and registration costs in proportion to business use. Separately, Section 179 allows you to fully deduct a work truck in the year of purchase instead of depreciating it over five years.
Power tools, hand tools, ladders, scaffolding, air compressors, generators, nail guns, laser levels, and any other equipment you use on the job. If it's used for work, it's deductible.
Items under $2,500 can typically be expensed immediately in the year of purchase under the de minimis safe harbor election — no depreciation schedule required.
For larger purchases, Section 179 lets you deduct the full cost in the year of purchase, up to the 2026 limit of $1.22 million. No waiting five to seven years to recover your investment through depreciation.
Any subcontractor paid $600 or more during the tax year is fully deductible as a business expense. This includes specialty trades, day laborers paid through a labor company, and independent project managers.
Failure to file a 1099-NEC for qualifying payments can cost you the deduction entirely in an audit. Every sub paid $600+ needs a 1099 by January 31. This requires collecting a W-9 before work begins — not after.
The IRS uses a 20-factor test to determine whether a worker is an employee or independent contractor. Misclassification penalties are severe. If your subs work exclusively for you, follow your schedule, and use your equipment — they may legally be employees.
Lumber, concrete, steel, plumbing fixtures, electrical materials, paint, fasteners, drywall, roofing materials — all of it. Every dollar spent on materials for a job is deductible as cost of goods sold or a direct business expense.
Tracking materials per project allows you to calculate accurate job profitability, price future bids correctly, and defend your deductions with itemized records if audited.
Drill bits, sandpaper, caulk, tape, safety supplies, and other consumables add up fast. Many contractors skip these because no single receipt is large. Collectively they can represent $2,000–$5,000/year in missed deductions.
NC General Contractor license renewal fees, surety bonds, general liability insurance, workers' compensation premiums, commercial auto insurance, umbrella policies, and any professional liability coverage. Every dollar is 100% deductible as an ordinary business expense.
North Carolina requires GC licensure through the NC Licensing Board for General Contractors. Renewal fees, exam prep costs, and any continuing education required to maintain the license are all deductible.
If you manage projects, handle billing, review blueprints, schedule crews, or run any business operations from a dedicated space in your home, that space qualifies for the home office deduction. The space must be used regularly and exclusively for business.
Deduct $5 per square foot, up to 300 square feet — a maximum deduction of $1,500 with zero recordkeeping beyond measuring the room.
Calculate the percentage of your home used for the office (square footage of office ÷ total square footage), then apply that percentage to mortgage interest or rent, utilities, home insurance, and repairs. This method typically yields a larger deduction for homeowners.
Job-site communication, scheduling, and coordination require constant connectivity. Deduct the business-use percentage of your cell phone bill and home internet service based on actual business vs. personal use.
Project management and estimating software are 100% deductible. This includes PlanGrid, Buildertrend, CoConstruct, QuickBooks, DocuSign, and any other subscription used for business operations. These are often overlooked because the charges are small monthly amounts that never get categorized properly.
As a self-employed contractor, you can contribute to a Solo 401(k) as both employee and employer. In 2026, the combined limit is $69,000. Every dollar contributed reduces your taxable income dollar-for-dollar.
A Simplified Employee Pension IRA allows contributions of up to 25% of net self-employment income. Simpler to administer than a Solo 401(k) but typically allows smaller contributions at the same income level.
A contractor in the 22% federal bracket who contributes $30,000 to a Solo 401(k) saves $6,600 in federal income tax alone — plus reduces the self-employment tax base. This is one of the highest-leverage moves available to any self-employed person.
OSHA 10 and OSHA 30 certifications, safety training courses, trade school courses that maintain or improve your skills, industry association dues (AGC of America, NAHB, Associated Builders and Contractors), and subscriptions to trade publications.
Education is deductible if it maintains or improves skills required in your current trade. It is NOT deductible if it qualifies you for a new career. For a GC, virtually all construction-related education and certification passes this test.
If you're operating as a sole proprietor or single-member LLC and netting $80,000 or more per year, you're paying 15.3% self-employment tax on every dollar of profit — before income tax even starts.
An S-Corporation election changes the math entirely. You pay yourself a reasonable salary and take the rest as a distribution. SE tax applies only to the salary, not the distributions. At a net income of $160,000 with an $80,000 salary, that's roughly $12,240 in annual savings from a single structural decision.
There are compliance costs — payroll, quarterly filings, a separate S-Corp return — but for a contractor netting above $80K, the math almost always works. See our detailed breakdown: Should You Elect S-Corp Status?
We'll review your last tax return free and show you the exact deductions you've missed. Most contractors are shocked by the number.
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