The Home Office Deduction, Explained Without the Audit Panic
Mention the home office deduction to a small business owner and watch them get nervous, like they’ve said a phrase that triggers an automatic IRS response. I understand where this comes from — it has a reputation as an audit magnet, mostly built on outdated advice. Let’s actually look at it.
What it is.
If you use part of your home regularly and exclusively for business, you may be able to deduct a portion of your home expenses — a slice of your rent or mortgage interest, utilities, insurance, and similar costs — proportional to the space that takes up in your home. There’s also a simplified method that uses a flat rate per square foot, trading some precision for a lot less recordkeeping.
The part people get wrong: “exclusively” is doing real work in that sentence.
The space needs to be used regularly and exclusively for business. Your kitchen table, where you also eat dinner and help with homework, generally doesn’t qualify — not because the IRS is being difficult, but because the deduction is tied to a space that’s actually dedicated. A spare room turned into an office, a converted closet, a defined corner of a room used only for work: these are the kinds of spaces that hold up.
Why the audit fear is mostly outdated.
The home office deduction used to be a bigger red flag than it is now, back when remote work was unusual enough to look suspicious on its own. With so many more people working from home, it’s a far more common and far less inherently suspicious line item than it used to be. That doesn’t mean claim it carelessly — it means claim it correctly, with real square footage and real records.
What “correctly” actually requires.
Know the square footage of the space and the square footage of your home. Keep records of what you’re basing the calculation on. Make sure the space genuinely meets the regular-and-exclusive test rather than a hopeful interpretation of it.
This is a CPA conversation, ultimately.
I’m not the one who decides whether you should take this deduction or calculates it for your return — that’s your CPA’s lane. What I can do is make sure your expenses and records are organized clearly enough that when you have that conversation, you’re not reconstructing the year from memory.
If your home office situation feels like something you’ve been claiming on a guess, or avoiding claiming out of fear, let’s get your records in a shape that makes the real answer knowable.
— Kimberly
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