2026 Guide to Common Deductions for Business Owners

Most owners leave money on the table at tax time. Not because they did anything wrong, but because nobody walked them through what's actually deductible and what isn't.

The rules changed for 2026. If your expense categories still match last year's, you could be missing deductions or claiming ones that won't hold up.

This guide covers the deductions small businesses use most, the recent changes from the One Big Beautiful Bill Act, and the watch-outs that get owners in trouble.

What you'll get:

• A category-by-category breakdown of what's deductible, from payroll and vehicles to home office and big-ticket equipment
• The 2026 rule changes spelled out, including the meals deductions that catch a lot of owners off guard
• The documentation each deduction requires, so the write-offs you claim are ones you can actually defend
• Three things to do this week to stop missing deductions before year-end