The home office deduction is one of the most valuable — and most misunderstood — tax breaks available to people who work for themselves. Some owners skip it entirely out of an old fear that it "triggers an audit"; others claim it incorrectly and create real exposure. The truth is that it is a legitimate, well-defined deduction with clear rules. Here is who qualifies and how to claim it correctly.
This is general information, not individual tax advice — your situation may differ.
Who Qualifies (and Who No Longer Does)
Since the 2018 tax law changes, the home office deduction is generally available only to the self-employed — sole proprietors, single-member LLCs, partners, and independent contractors. W-2 employees can no longer deduct a home office on their federal return, even if they work from home full-time. So the first question is simply: are you self-employed? If not, this deduction isn't available to you federally.
The Two Tests: Exclusive and Regular Use
To qualify, a space in your home must pass two tests. Exclusive use: the area is used only for business — a spare room used as your office qualifies; the kitchen table where you also eat dinner does not. Regular use: you use it for business consistently, not just occasionally. The space must also generally be your principal place of business — where you do your main work or regularly meet clients. (Limited exceptions exist for storage of inventory and for licensed daycare.)
Method 1: The Simplified Option
The simplified method is exactly that: deduct $5 per square foot of qualifying office space, up to 300 square feet — a maximum deduction of $1,500 per year. No receipts, no depreciation, no complex allocation. It's ideal for smaller offices and owners who value simplicity, and you can switch methods from year to year.
Method 2: The Regular (Actual Expense) Method
The regular method deducts the actual business-use portion of your home expenses — a percentage (based on the office's share of your home's square footage) of rent or mortgage interest, utilities, insurance, repairs, and depreciation. There's no $1,500 cap, so for a larger office or higher home costs it often yields a bigger deduction — but it requires careful records and allocation. Either way, the deduction generally cannot exceed the income from that business.
Which Method Should You Use?
Run both. If your office is small and your home costs are modest, the simplified $5-per-foot method may win on both dollars and effort. If you have a larger dedicated office or significant home expenses, the actual-expense method usually produces a materially bigger deduction — worth the extra recordkeeping. The right answer is simply whichever is larger for your situation in a given year.
Common Mistakes to Avoid
Three errors cause most trouble: claiming a space that isn't used exclusively for business; W-2 employees trying to claim it federally; and poor records under the actual-expense method. Keep a simple file — square footage, a photo of the space, and your home-expense totals — and the deduction is both safe and straightforward.
How VarStan Helps
The home office deduction is a small example of a bigger truth: the self-employed leave money on the table when they don't know which deductions they qualify for. As a CPA-led firm, we make sure clients claim what they're entitled to — correctly, with the records to back it up — and choose the method that maximizes the deduction each year. If you work from home and aren't sure you're claiming this right, that's exactly the kind of detail we catch.