Start with the business purpose
Federal business deductions generally require an expense to be ordinary and necessary: customary in your field and useful for your business. A purchase does not qualify simply because you paid through a business account.
Start a list of recurring costs, such as supplies, software, rent, and professional services. Record why each serves the business. Separate personal spending and flag purchases used for both purposes for review.
Connect documents to your books
Save the invoice or receipt alongside evidence of payment. Supporting records should identify the payee, amount, date, and what you purchased. A statement alone may leave the business purpose or purchase details unclear.
Choose a weekly filing routine. Give each document a recognizable name and connect it to the matching bookkeeping entry. Keep income records too; tax preparation needs a complete picture, not only an expense folder.
Which approach best supports a business expense?
Review before claiming
Put equipment purchases, mixed-use costs, and expenses with special rules on a question list for your preparer. Recording a cost and determining its tax treatment are separate steps. Avoid marking every recorded purchase as fully deductible.
Keep filed returns and supporting records under a retention plan. The IRS does not give every document the same retention period; property and employment records can require different handling. Maryland owners should also confirm applicable state requirements.
Action checklist
Choose the items you want, or print all.
Sources & further reading
- IRS Publication 334: business expenses ↗
- IRS: what kind of records should I keep? ↗
- IRS: how long should I keep records? ↗
General business education. Follow current agency instructions and review your circumstances with a qualified tax, legal or financial adviser.