The IRS imposes one strict rule that governs everything else: to qualify for the home office deduction, the space must be used regularly and exclusively for business.

Regular means you use it consistently, not occasionally. Exclusive means it's used for business and nothing else.

This is where most people get it wrong. If your "home office" is a corner of the dining room table where you also eat dinner and help your kids with homework, it doesn't qualify. If it's a guest bedroom that you work in occasionally but mainly use for overnight visitors, it doesn't qualify. The space doesn't have to be a separate room with a door (though that helps), but it must be a defined area used solely for business.

A clearly designated desk area in a bedroom used exclusively for work? That can qualify. The key word is exclusively.

Assuming your space qualifies, you have two options for calculating the deduction:

The IRS's simplified method lets you deduct $5 per square foot of your home office, up to a maximum of 300 square feet — so a maximum deduction of $1,500. No receipts required, no depreciation calculations, no complexity.

For many solopreneurs, especially those in lower-cost housing markets, this is the better option. It's clean, defensible, and requires almost no recordkeeping beyond knowing how big your office is.

This method calculates the deduction based on the percentage of your home used for business. Here's how it works:

1. Measure your home office square footage 2. Divide by the total square footage of your home 3. Apply that percentage to your actual home expenses Example: 200 sq ft office ÷ 2,000 sq ft home = 10% business use. If your total annual home expenses (mortgage interest or rent, utilities, insurance, repairs, etc.) are $30,000, your deduction is $3,000.

The regular method can produce a larger deduction, especially in high-cost areas with expensive rent or mortgages. But it requires more documentation and comes with one significant complication: home depreciation.

When you use the regular method, you're also required to take a depreciation deduction on the business portion of your home (if you own it). The depreciation rate for residential property is 39 years under the Modified Accelerated Cost Recovery System. On $300,000 of home cost basis, the annual depreciation might be around $769, of which your 10% business share is $76.90.

Here's the catch: when you sell your home, the IRS will "recapture" those depreciation deductions at a rate of up to 25%, regardless of whether your home sale otherwise qualifies for the capital gains exclusion. This is called unrecaptured Section 1250 gain. It's not a reason to avoid the regular method — but it is something to understand going in, and a reason to track your accumulated depreciation carefully.

Only self-employed individuals and business owners. Since the Tax Cuts and Jobs Act of 2017, W-2 employees working from home can no longer claim this deduction on their federal return, even if they work remotely full-time. (Some states still allow it at the state level.)

If you're a sole proprietor or single-member LLC owner, you claim the home office deduction on Form 8829, which feeds into your Schedule C. Partners in partnerships and S corp shareholders have a slightly different treatment — check with a CPA on the correct approach for your structure.

The home office qualification also unlocks some related deductions worth knowing:

Home internet service: If you use your internet for business, the business-use percentage is deductible. If you're claiming a home office and using internet primarily for work, claiming 50– 80% business use is reasonable for most solopreneurs.

Home repairs and maintenance: Repairs that benefit your entire home (a new roof, furnace replacement) are deductible at your business-use percentage. Repairs that specifically benefit the home office (painting that room, fixing a window in the office) are 100% deductible.

Renters: You don't need to own your home to claim this deduction. Renters use their rent payments (and utilities) as the base for the regular method calculation — or simply use the simplified method.

Here's a frequently overlooked benefit: if your home qualifies as your principal place of business, trips from your home to client sites, meetings, supply stores, and other business locations are fully deductible as business mileage. Without a qualifying home office, those trips could be considered non-deductible commuting. With one, they're legitimate business travel.

At the 2025 standard mileage rate of 70 cents per mile, this can add up quickly for solopreneurs who drive regularly for work.

Claiming the entire guest room. If you have a guest bedroom with a desk and a bed, the room isn't exclusively used for business. Consider the simplified method applied only to the desk area — or rethink the room's layout.

Forgetting to include the deduction. Some solopreneurs skip this deduction because they're nervous it'll trigger an audit. The "home office red flag" is largely a myth from decades past. The IRS receives millions of legitimate home office deductions annually. As long as the space genuinely qualifies and you can support the deduction, claim it.

Switching methods year to year carelessly. You can switch between the simplified and regular methods from year to year, but prior-year depreciation deductions follow specific rules. Keep records of which method you used each year.

Miscalculating the space. Measure the dedicated workspace accurately. Include only the space actually used for business — not the entire room if part of it is used personally.

Before filing, make sure you can answer yes to these questions:

Is this space used regularly for business? (Not occasionally — regularly.) Is this space used exclusively for business? (Not also as a guest room, family room, or storage area.) Is this your principal place of business, or do you use it regularly to meet clients? Can you produce a floor plan or measurement showing the space? If using the regular method, do you have your home expense records (rent/mortgage, utilities, insurance) for the year? If you're checking yes across the board, you're in good shape.

The home office deduction rewards the reality of how most solopreneurs actually work. It can save you hundreds to thousands of dollars per year, and when properly claimed, it's entirely defensible. The simplified method is the easy button — $5 per square foot, minimal paperwork, done. The regular method requires more work but can deliver a larger deduction for those in high-cost housing markets.

Either way: if your home is where your business lives, make sure you're capturing this deduction. Leaving it on the table is leaving real money behind.

Want a complete picture of your deductions? Read our full guide to business expense deductions — it covers every major category available to solopreneurs.

The home office is just one piece of your full deduction picture. Working from home also raises zoning questions and, in some cities, a home occupation permit requirement worth checking once.