Yes, invoices typically have an implied or explicit expiration date related to payment terms and, more importantly, a legal, statutory limitation period (often 3 to 6 years) after which they cannot be enforced. While a due date (e.g., Net 30) defines when payment is expected, the legal expiration is the deadline for legal action to recover debt.
The short answer is for most debts, that limit is 6 years.
The Act explains that you have 6 years to chase those elusive payments before they become statute barred, which means that you are unable to use legal action to provoke payment.
In the US, you need to keep your invoices for at least three years — and in some cases, for six years or indefinitely. In Canada, the UK, and Australia, mandatory invoice retention periods vary between 5 to 6 years.
These limitations outline that a creditor can pursue unpaid debt from a debtor for up to 6 years from the date of the provided product or service.
In the US, strict accounting standards like ASC 606 and IRS rules require invoice dates to accurately reflect when goods or services were delivered—not when paperwork is processed.
Therefore an invoice would be invalid if it did not include such details as: the name and address of the person (customer) to whom the goods or services have been supplied.
Include clear seller and customer details, a unique invoice number, dates, itemized charges, separate tax lines, totals, payment terms, and how you want to be paid. Invoicing requirements vary by state.
Under the Limitation Act 1980, invoices can be issued up to six years after the work was completed or the goods were delivered. While there is no legal restriction within this time frame, issuing invoices promptly is always best to avoid disputes or complications.
In general, clients cannot refuse to pay late invoices if they have received goods or services as agreed upon in the contract or agreement. Late invoicing doesn't absolve them of their payment obligation.
According to California Code of Civil Procedure § 337(1), the statute of limitations for a written contract is four years. Under § 339(1), the limit for an oral contract is two years.
The 6-year rule derives from the Limitation Act 1980 sets an important piece of law that governs the period creditors have to issue court proceedings for a debt. For most unsecured business debts, for example, unpaid invoices, the law allows you six years from the time the debt became due to start legal action.
The IRS 7-year rule primarily applies to keeping records for claiming a deduction for bad debts or losses from worthless securities, allowing a longer period to file for a credit or refund, but it's not a universal audit limit; it's often a recommended safe buffer for general record-keeping, with the standard IRS audit period usually being 3 years, extending to 6 years for substantial income omission (over 25%) or foreign income issues, and indefinitely for fraud.
On the other hand, there's usually no legal requirement that bills be sent out in a timely fashion—so businesses can absolutely bill your months or even years after the fact. If it's a medical debt, there's the added confusion of insurance coverage and the challenge of understanding the bill in the first place.
The general rule is that if it becomes necessary to issue legal proceedings to recover an unpaid invoice, then the creditor must do so within the statutory time limit of six years from when the clock starts to tick.
How do I know if an invoice is correct? You can verify if an invoice is correct by comparing it to a purchase order, a delivery receipt, or your contract terms. This is often called a "three-way match" in accounting. To go further, use a digital invoice validation tool.
With the new policy, the 5-year invoice validity period of PTU and system-generated receipts/invoices is now removed making all PTUs to be issued be valid unless revoked by the BIR on violating any ground stated by the bureau.
How long does an unpaid invoice remain valid for collection? Under the Limitation Act 1980, invoices remain valid for up to six years from the date the customer last acknowledged the debt or made a partial payment.
When that happens, I take the following steps to get seriously past-due invoices paid.
Public sector organisations are legally required to pay invoices within 30 days, while consumer clients have no fixed legal period – meaning you can set a fair and reasonable term yourself.
This limitation period starts the day after the due date mentioned on the invoice. As a general rule, this deadline is set at 30, 45 or 60 days after the issue of the invoice according to the legislation in force, depending on the creditor's sector of activity.
Written Contracts: For debts involving written contracts, such as commercial agreements, promissory notes, or client service contracts, the statute of limitations extends to four years from the date of the breach.
An invoice can expire. When the limitation period of your outstanding invoice has expired, the right to demand payment of a claim expires.
12 common invoicing mistakes (and how to fix them)
30-day e-invoicing upload rule: Businesses with an AATO of ₹10 crore or more must upload their e-invoices to the IRP within 30 days of the invoice date (effective from April 1, 2025), after which the system will reject them.