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 I understand where this comes from — it has a reputation as an audit magnet, mostly built on outdated advice.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, uti