Yes, but the deduction only holds up if the space is used exclusively and regularly for business, and if you document it in a way that matches your entity type. Sole proprietors generally claim the deduction directly, while S-Corp owners typically need an accountable plan to reimburse themselves correctly. Skipping the documentation step is the most common reason a legitimate home office deduction gets challenged.
A home office deduction is one of the easiest tax benefits to qualify for and one of the easiest to lose in an audit, not because the deduction itself is questionable, but because the paperwork behind it often is not. The rules are not complicated, but they are specific, and they depend heavily on whether you operate as a sole proprietor or through an S-Corp.
The Internal Revenue Service requires that a home office be used regularly and exclusively for business. That second word carries a lot of weight. A guest room that occasionally doubles as an office generally does not qualify, even if you use it for work most of the time. The space needs to be dedicated to business use, with no meaningful personal use mixed in.
Beyond the exclusive use test, the space also needs to be your principal place of business, or a location where you regularly meet clients or conduct administrative work if your primary work happens elsewhere. IRS Publication 587 lays out these tests in detail, and the Bradford Tax Institute has noted that the exclusive use requirement is one of the most frequently misunderstood parts of the deduction.
Before calculating anything, walk through whether your home office space is used only for business. If it is not, either adjust how the space is used or reconsider which area of your home actually qualifies. This is a straightforward check you can do yourself.
The simplified method uses a standard rate applied to your office square footage, while the actual expense method requires tracking a percentage of your actual home costs, including utilities, insurance, and depreciation. The right choice depends on your specific numbers, and running both calculations before deciding is where an advisor's comparison adds clarity.
If your business is taxed as an S-Corp, you generally cannot take the home office deduction directly on your personal return the way a sole proprietor would. Instead, the business typically reimburses you through an accountable plan, which requires a formal policy and documented expense reports. Setting this up correctly, rather than reimbursing informally, is where working with an advisor prevents a deduction from being disqualified later.
Photos of your workspace, a floor plan showing the square footage, and receipts supporting your expense calculations all strengthen your position if the deduction is ever questioned. This is documentation you can build and maintain yourself once you know what to keep.
A move, a renovation, or a shift in how you use your space can all affect whether your home office deduction still holds up the way it used to. Reviewing this periodically with an advisor, rather than assuming last year's setup still applies, keeps the deduction defensible.
This is a fictional example to illustrate how Harness Advisory would advise a client in this situation.
Andre runs an IT consulting business in Tennessee, structured as an S-Corp. For years, he had been informally deducting a portion of his home expenses on his personal return without realizing that, as an S-Corp owner, that approach did not actually hold up under the rules that applied to him.
Harness Advisory would review his home office setup, confirm it met the exclusive use requirement, and help him establish a formal accountable plan so his business could reimburse him correctly instead of him claiming the deduction directly. The firm would also help him build a documentation file, including a floor plan and expense records, so the deduction would hold up if it were ever questioned.
The dollar amount of Andre's deduction did not change dramatically. What changed was whether it would survive scrutiny.
If you see pieces of your own business in this hypothetical example, it may be time to sit down with a Harness Advisory business advisor and talk through your options.
Harness Advisory treats deductions like the home office write-off as part of an integrated documentation strategy, not a line item to fill in at filing time. The firm builds the structure, whether that means an accountable plan or a clean expense-tracking system, so deductions hold up well before an audit ever becomes a possibility.
This proactive approach reflects the kind of board-level thinking that goes beyond simply preparing a return. A conversation with a business advisor is a low-pressure way to see whether your current documentation would hold up if it were ever reviewed.
These conversations are built for business owners who want confidence that their deductions are structured correctly, not just claimed. The meeting typically covers a review of your current home office setup, your entity type, and whether your documentation would hold up under scrutiny.
You will walk away with clarity on what needs to change, if anything, and whether deeper advisory support makes sense for keeping your records audit-ready going forward. It is an educational conversation, and there is no obligation to move forward afterward.
| If you're not confident your home office deduction would hold up under review, now is the time to find out. Schedule time with a Harness Advisory business advisor today. |
Book your conversation at: https://busadvisory.com/schedule-your-advisory-fit-meeting/
Yes, as long as the space is used regularly and exclusively for business. How you claim the deduction depends on your entity type, with sole proprietors and S-Corp owners following different documentation paths.
It means the space must be used only for business, with no regular personal use mixed in. A room that occasionally serves another purpose generally does not qualify, even if business use is frequent.
S-Corp owners typically cannot take the deduction directly on their personal return. Instead, the business generally reimburses the owner through a formal accountable plan, which requires documented expense reports.
It depends on your specific numbers. The simplified method applies a standard rate to your square footage, while the actual expense method tracks a percentage of real home costs. Comparing both is the only way to know which is more favorable.
Useful documentation includes a floor plan showing the office square footage, photos of the space, and receipts supporting your expense calculations. This documentation is what typically holds up the deduction if it is ever questioned.
It's worth a conversation if you've never formally documented your home office deduction or if your business or living situation has changed. You can schedule time anytime at busadvisory.com to review whether your current setup holds up.
