People have been telling contractors to avoid the home office deduction because "it's a red flag" for decades. This advice is outdated and is costing business owners real money. The IRS audits home office deductions at normal rates. The fear around it is significantly larger than the actual risk.
What Actually Qualifies
To claim a home office deduction, you need a space used regularly and exclusively for business. Regularly means it's your normal place of doing business. Exclusively means it's not also your guest room or the couch where you watch TV while occasionally checking email. The space doesn't have to be a separate room with a door, but it needs to be a defined area used only for work.
For contractors, this typically means the desk where you do estimates and scheduling, make client calls, and handle administrative work. If you're running the business from home, you have a qualifying space. If you also have a separate office or shop you work from, the rules get more nuanced, but most home-based contractor operations qualify.
Two Ways to Calculate It
The simplified method: multiply the square footage of your office space by $5, up to a maximum of 300 square feet. Max deduction of $1,500. Easy, no documentation of actual expenses needed.
The actual expense method: calculate the percentage of your home used for the office (office square footage divided by total home square footage), then apply that percentage to actual home expenses: mortgage interest or rent, utilities, insurance, repairs and maintenance. This method usually produces a larger deduction but requires tracking actual expenses.
Run both calculations. Use the one that gives you the larger deduction. Most tax software does this automatically.
What It Actually Saves You
If your home office is 150 square feet of a 1,500 square foot home, that's 10% of your home expenses. If your total home costs (mortgage interest, utilities, insurance) are $24,000 per year, the deduction is $2,400. At a 25% combined federal and state rate plus SE tax, that's roughly $700-900 in tax savings. For filling out one section of your tax return.
The deduction is real and legal. Stop leaving it on the table because of a rumor from 1995.
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Written by
Dina Good
Founder, WerkOps
Dina grew up in the trades. Her father was a contractor, then a building inspector, and the job site was her classroom long before any formal one was. She went on to own her own contracting company, which is where she first felt the pain of running a skilled trade business on bad software and worse spreadsheets. A love of data pulled her into programming, and the two worlds eventually collided into WerkOps - software built by someone who has actually been on the truck.