How long should I keep records of unpaid invoices?
How long to keep records of unpaid invoices
Short answer
For tax purposes, the IRS recommends keeping records supporting a bad debt deduction for at least 7 years from the return on which the deduction was claimed. For legal purposes, keep records at least as long as the statute of limitations for contract claims in your state — which ranges from 3 to 10 years. Not legal or tax advice — consult your accountant.
Two things drive record retention on unpaid invoices: the tax deduction window and the statute of limitations on legal claims. IRS Publication 583 recommends keeping records that support a bad debt deduction for at least 3 years from the date you filed the return, but the IRS can audit up to 6 years if it suspects substantial understatement of income. Practical rule: keep bad debt records for 7 years from the date of the write-off.
On the legal side, the statute of limitations on a written contract claim ranges from 3 years in the shortest states to 10 in the longest. If you ever want to sue on a written contract balance, you need the contract, the invoice, and any correspondence. Keep all of it until the statute of limitations has run in the state where the contract was formed or where the client is located. Not legal advice; talk to an attorney about your jurisdiction.
The practical approach for small businesses is to keep all financial records for 7 years in digital format. Modern accounting software (QuickBooks, FreshBooks, Xero) handles most of this automatically. For supporting documents like contracts, signed change orders, and delivery confirmations, a simple folder structure by client and year, backed up to cloud storage, is enough. Storage is cheap. Not having documentation when you need it in court is not.
One exception: if you suspect fraud was involved in the nonpayment, keep records indefinitely. Fraud claims have no statute of limitations in most jurisdictions, and documentation of fraudulent misrepresentation can stay relevant for years after the original transaction. Not legal advice.