The home office deduction has a reputation problem. Many people avoid claiming it — not because they don't qualify, but because they've heard it "triggers audits" or is somehow risky.
That reputation is largely undeserved. The home office deduction is a legitimate deduction for people who legitimately work from home. The key is understanding the actual requirements and documenting them correctly.
The Basic Requirement: Regular and Exclusive Use
The IRS allows a home office deduction for a portion of your home used regularly and exclusively for business.
Both words matter.
Regular means you use the space for business consistently, not occasionally. Using your dining room table for work sometimes doesn't create a home office deduction. Using a dedicated room for business work every day does.
Exclusive means the space is used for business and nothing else. A guest bedroom with a desk in the corner that your in-laws sleep in when they visit doesn't qualify. A room that functions solely as your office — no personal use — does.
The exclusive use requirement is where most people run into trouble. If the space has any significant personal use, it doesn't qualify for the deduction. "Regularly and exclusively" is not a difficult standard to meet if you have a dedicated home office, but it is a binary requirement — you either meet it or you don't.
The Principal Place of Business Requirement
Your home office must be your principal place of business, or a place where you meet clients or customers in the normal course of business.
Principal place of business means you conduct the majority of your business activities there, or you use it for the administrative and management functions of your business and have no other fixed location where you conduct those activities.
If you're a freelancer or remote worker with no other office, your home office is almost certainly your principal place of business.
If you have another office — a commercial lease, a coworking space you use consistently — the analysis is more nuanced. You can still qualify if the home office is used for administrative functions and your other location doesn't have suitable space for those functions.
If you work from home and haven't claimed this deduction, check whether you qualify and which method gives you more.
The Two Calculation Methods
Once you've established that you qualify, you have two ways to calculate the deduction.
The simplified method: $5 per square foot of your home office, up to 300 square feet. Maximum deduction of $1,500 per year. Simple to calculate, no depreciation complications, but often produces a lower deduction than the actual expense method.
The regular method: Calculate the percentage of your home used for business (square footage of office divided by total square footage), then apply that percentage to your actual home expenses.
Actual home expenses include: rent or mortgage interest, property taxes, utilities, insurance, repairs, and depreciation on the portion of the home used for business.
Example: 200 square foot office in a 2,000 square foot home = 10 percent business use. If you pay $2,000 per month in rent, the home office deduction is $200 per month, or $2,400 per year.
For homeowners, the deduction includes a portion of mortgage interest, property taxes, insurance, utilities, and home depreciation. The depreciation component, while valuable, creates a recapture issue when you sell the home — the depreciation deducted is taxed at 25 percent on sale. This doesn't make the deduction not worth taking, but it's a consideration worth understanding.
W-2 Employees Cannot Take This Deduction
The 2017 Tax Cuts and Jobs Act eliminated the home office deduction for W-2 employees as a miscellaneous itemized deduction. If you're an employee who works from home — even if your employer requires it — you cannot take a home office deduction on your federal return. (Some states still allow it.)
Only self-employed individuals, independent contractors, and business owners can take the home office deduction on Schedule C or as a business expense.
What Documentation You Need
Good documentation is what makes this deduction defensible. Keep:
A floor plan or sketch showing the office space and total home dimensions, with square footage calculations. This doesn't need to be professional — a simple diagram works.
Photos of the office space showing its dedicated business use.
Records of actual home expenses for the regular method — mortgage statements, utility bills, insurance documents, lease agreement.
Your business records showing that you work from this location — emails, invoices issued, client correspondence. These establish the regular use.
You don't need to file special forms to claim the deduction — it goes on Form 8829 (regular method) or directly on Schedule C (simplified method). But the documentation needs to exist in case it's ever questioned.
The Audit Risk Reality
The home office deduction does appear on IRS audit triggers lists, but the practical reality is that the audit rate for small businesses is very low, and a properly documented home office deduction is defensible.
The deductions that create real audit risk are ones that are disproportionate to income or clearly personal in nature. A home office deduction that represents 10 to 15 percent of your home expenses, for a business that generates real revenue, is not a red flag.
What creates risk: claiming a home office when you have no business income, or claiming expenses far in excess of what's plausible for your home and business size.
Plenty of people who work primarily from home skip this deduction out of a vague fear that isn't grounded in how the IRS actually works — and leave a meaningful deduction on the table. We help clients document and claim it correctly.