Expense deductibility guide

This hub lists common expense deductibility questions — each lookup is written in a yes / no / depends format with practical conditions, examples, and record-keeping notes.

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How to use this guide

Each lookup page is designed to answer one question quickly, then explain the most common conditions and exceptions. In general, deductibility depends on who you are (employee vs self-employed), business use, and whether you can keep reasonable records.

If you’re not sure where to start, choose the expense closest to your situation and follow the “Related lookups” section on each page.

Last reviewed: January 30, 2026