The safe habit is to keep most business financial records for seven years. This covers the IRS’s standard three-year audit window plus the extended six-year window that applies when income is substantially understated. Seven years gives you a comfortable margin without hoarding paperwork indefinitely.

The three-year rule is the baseline. The IRS generally has three years from the date you file a return to audit it. File your 2024 return in April 2025, and the audit window typically closes in April 2028. But exceptions extend the timeline in certain cases.

The six-year rule kicks in when gross income is understated by more than 25 percent. If the IRS finds a significant understatement, they can go back six years instead of three. And there’s no time limit at all if a return was fraudulent or never filed. Seven years handles the realistic scenarios without requiring permanent storage of every routine document.

Payroll records need at least four years. The IRS requires employers to keep payroll tax records for at least four years after the tax becomes due or is paid, whichever is later. State requirements vary, so check your state’s rules as well.

The records you should keep include bank and credit card statements, receipts for deductible expenses, invoices issued and received, contracts with vendors and clients, payroll records and tax filings, and copies of filed tax returns with all supporting schedules. If a number appeared on your tax return, you should have documentation for it.

Cloud bookkeeping changes how this works in practice. When your books are in QuickBooks Online or similar software and receipts are attached digitally to transactions, retention becomes automatic rather than a filing cabinet project. Full-service bookkeeping means documents live with the records they support, searchable and backed up without boxes of paper.

For those running a busy medical practice, this matters. You likely have receipts for supplies, equipment purchases, staff expenses, and dozens of operational costs. Bookkeeping for medical businesses with built-in document storage means you won’t be scrambling for documentation if a question comes up years later.

Some advisors suggest keeping tax returns and supporting documentation indefinitely. The returns themselves take little space digitally, and having a complete history can help if you ever need to prove basis in property or reconstruct financial history.

If you’re not sure whether your current records meet these standards or want help setting up systems that make retention automatic, book a consultation to talk through your situation.