Business Tax Records: How Long to Keep What
The retention periods that follow the IRS assessment deadlines, the records that need to be kept longer, and what counts as an acceptable record.
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
Keep business tax records at least as long as the IRS can audit the return — generally three years from filing. Keep employment tax records four years, records six years if unreported income exceeds 25 percent of reported gross income, bad debt and worthless securities claims seven, and asset records until the limitations period for the sale year ends.
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How long does each type of record need to be kept?
| Record | Minimum period |
|---|---|
| Income, expense receipts, bank statements supporting a return | 3 years after filing (or due date, if later); for a later refund claim, 3 years after filing or 2 years after paying the tax, whichever is later |
| Records where unreported income is more than 25 percent of the gross income shown on the return | 6 years |
| Claims for bad debts or worthless securities | 7 years |
| Employment tax records (payroll, W-4s, Forms 941 and 940) | 4 years after the tax is due or paid, whichever is later |
| Asset purchase, improvement, and depreciation records | Until the limitations period ends for the year the asset is sold |
| Copies of filed returns | No set IRS period — the IRS advises keeping copies; many owners keep them permanently because they support carryforwards and basis |
| No return filed, or a fraudulent return | Indefinitely |
States set their own periods and some are longer than the federal three years.
What counts as an adequate record?
The IRS needs records that show the amount, date, payee, and business purpose of each item. That means invoices and receipts, bank and card statements, canceled checks or payment confirmations, mileage logs, and, for travel and meals, notes of who attended and why. A bank statement alone shows payment, not purpose.
Are digital copies acceptable?
Yes. Scanned and electronic records are acceptable if they are legible, complete, retrievable, and reproduced accurately, and if your system has controls against alteration. Accounting software files, payroll provider reports, and cloud storage all qualify when backed up.
Why do asset records matter longer?
Basis — what you paid plus improvements minus depreciation — determines gain when an asset is sold, possibly decades later. Without purchase records, you may be unable to prove basis and could owe tax on more gain than you actually had. The same applies to the cost of shares or partnership interests.
What about carryforwards?
Keep records that support net operating losses, capital loss carryforwards, credit carryforwards, and suspended passive losses until the period of limitations runs out for the last return on which they are used — generally three years after that return is filed.
Frequently asked questions
Can I shred receipts once they are scanned?
Generally yes, once the system has been tested to confirm it reproduces the originals legibly and accurately under IRS requirements (Rev. Proc. 97-22) and procedures are in place to keep it compliant.
What if my records were destroyed in a disaster?
Reconstruct them from bank records, vendors, and customers, and keep notes of the reconstruction. Disaster relief may extend deadlines but does not remove the need for support.
Do I need to keep records for a closed business?
Yes, for the same periods, measured from the final returns.
How long should employee files be kept?
Payroll tax records for at least four years; employment law and state rules may require other personnel records for longer.
Official sources
The IRS explains: “Generally, you must keep your records that support an item of income, deduction or credit shown on your tax return until the period of limitations for that tax return runs out.” — Internal Revenue Service, How long should I keep records?, https://www.irs.gov/businesses/small-businesses-self-employed/how-long-should-i-keep-records
The IRS explains: “Purchases, sales, payroll, and other transactions you have in your business generate supporting documents. Supporting documents include sales slips, paid bills, invoices, receipts, deposit slips, and canceled checks.” — Internal Revenue Service, Publication 583 (12/2024), Starting a Business and Keeping Records, https://www.irs.gov/publications/p583
Next step
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