If you run your business from home, the home-office deduction can turn part of your rent, utilities, and upkeep into a legitimate write-off. It carries a reputation as an audit trigger, but that fear is overblown when you follow the rules. The key is a space used regularly and exclusively for business, plus a choice between two calculation methods. This guide explains who qualifies and how to claim it correctly.
The regular and exclusive use test
To qualify, a part of your home must be used both regularly and exclusively for business. Exclusive means that space is not also your dining table or the family television room; a dedicated room or a clearly defined area is the standard. Regular means you use it consistently, not just once in a while. The area must also be your principal place of business or a spot where you meet clients.
The simplified method
The simplified method lets you deduct a flat 5 dollars per square foot of qualifying space, up to 300 square feet, for a maximum of 1,500 dollars. It requires no tracking of actual home expenses, which makes it fast and low-risk. You simply measure the space and multiply. For a modest home office, this method is often close to what the detailed method would yield, with far less paperwork.
The regular method
The regular method deducts the business-use percentage of actual home expenses such as rent, mortgage interest, utilities, insurance, and repairs. You find the percentage by dividing the office square footage by your home's total square footage. If your office is 200 square feet in a 2,000 square foot home, that is 10 percent of eligible costs. This method takes more records but can produce a larger deduction in a high-cost home.
Who can and cannot claim it
The deduction is available to the self-employed, but current tax law bars employees from claiming a home office as an unreimbursed expense. The deduction generally cannot create or deepen a business loss, though the simplified method's unused amount cannot carry forward while the regular method's can. You can switch methods from year to year, choosing whichever is better. Keep a simple record of your measurements and expenses either way.
A tutor uses a 150 square foot spare room only for work. The simplified method gives 150 times 5 dollars, or 750 dollars. If her rent and utilities run 30,000 dollars a year and the room is 12 percent of the home, the regular method would instead yield about 3,600 dollars.
Key takeaways
- The space must be used regularly and exclusively for business.
- The simplified method deducts 5 dollars per square foot up to 300 square feet, or 1,500 dollars.
- The regular method deducts the business-use percentage of actual home costs.
- Self-employed people qualify; employees currently cannot claim it.
Common mistakes
- Claiming a space that doubles as personal living area, failing the exclusive-use test.
- Assuming employees can deduct a home office, which current law disallows.
- Never comparing the two methods and leaving a larger deduction unclaimed.
FAQ
Does claiming a home office trigger an audit?
Not on its own. A properly documented, exclusively used space is a legitimate deduction that millions of self-employed people claim.
Can I switch methods each year?
Yes. You may choose the simplified or regular method year by year, picking whichever produces the better result.