Deductions and Credits

By AE Tax Advisors | Educational guide | Updated September 2026

Business Owners / Deductions and Credits

Deductions and credits reduce taxable income or tax directly, but each comes with substantiation requirements and limits. A deduction that is unsupported by records is a liability rather than a benefit, so the guides in this hub emphasize documentation as much as eligibility.

Topics include the qualified business income deduction, the Augusta rule for renting a home to your business, home office and vehicle deductions, equipment expensing under Section 179 and bonus depreciation, pass-through entity tax elections, and the research credit. A separate guide reviews commonly missed deductions and how to think about them.

How to Use This Hub

Read the guide on commonly missed deductions first if you want a broad checklist. Then move to the specific guides that match your business. Owners with equipment purchases should read the expensing guide, and owners who work from home should read the home office guide before considering the Augusta rule so the two are not confused.

Rules in this area change with legislation, and some provisions have phase-ins or expirations. The guides describe the general framework and encourage you to verify current-year details with your advisor.

A good habit is to keep a single folder for each tax year with receipts, logs, and calculations, so that every deduction you claim can be supported quickly if questions come up later.

Guides in Deductions and Credits

Commonly Missed Business Deductions to ReviewA review list of business deductions that owners sometimes overlook, with documentation tips and notes on where limits apply.The Augusta Rule: Renting Your Home to Your BusinessHow Section 280A(g) treats short-term home rentals, how owners use it for business meetings, and the documentation that matters.The Qualified Business Income Deduction (Section 199A)An overview of the 20 percent QBI deduction for pass-through owners, including thresholds, wage limits, specified service businesses, and planning ties.Home Office Deduction for Business OwnersHow the home office deduction works, the regular and exclusive use tests, simplified vs actual methods, and how S corporation owners handle it.Vehicle Deductions for Business OwnersHow owners deduct vehicle costs, standard mileage vs actual expenses, the heavy vehicle rules, and the records that support them.Section 179 and Bonus Depreciation for Business EquipmentHow owners recover the cost of equipment through Section 179 expensing and bonus depreciation, with notes on limits and planning.Pass-Through Entity Tax Elections ExplainedHow state pass-through entity tax elections work, why they exist, which owners consider them, and how they interact with federal deductions.Research Credit Basics for Small BusinessesAn overview of the federal research credit, the four-part test, qualifying expenses, payroll tax offset for small businesses, and documentation.

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Educational purposes only. This page is general education and is not tax, legal, or accounting advice. Tax laws change and outcomes depend on individual facts, so consult a qualified professional before acting. No result is guaranteed.

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AE Tax Advisors for Business Owners is an educational resource. For an analysis of your own business or property, review AE Tax Advisors’ relevant advisory services and book a discovery call.

General education, not individual tax advice. Examples do not establish eligibility or guarantee savings.