Invoices can generally remain legally valid for up to six years from the date of issue or the date the debt was last acknowledged, based on statutes of limitations in many jurisdictions like the UK and various US states. While there is no strict legal time limit for issuing an invoice, collecting on invoices older than 6 years (or 4 years in some, e.g., Californian, contract cases) typically becomes difficult as they may become "statute barred".
Stick within the legal time limit for invoicing.
Although the legal time limits for invoicing are usually forgiving, you should send invoices within 30 days to maintain a steady cash flow. Electronic signatures can help you keep track of your invoices.
If that party has not provided you any work agreement, then trying to invoice you for 10 years would not be appropriate. Statutory limitations apply which means only six years of invoices can be claimed.
This rule is under the Limitation Act 1980. 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.
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.
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 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.
Information needed to generate an invoice
For starters, most invoices should contain the following data: The issue date, payment due date and NET terms. Sender and recipient names and contact information. A unique and identifiable invoice number (for auditing)
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.
Maybe you've just discovered an old invoice that slipped through the cracks, or maybe you've been chasing down a customer who seems to have completely disappeared. Either way, you're probably wondering, how long can I keep chasing after this money? The short answer is for most debts, that limit is 6 years.
Backdating invoices isn't inherently illegal—but misusing it to manipulate revenue or tax periods risks serious penalties. 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.
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.
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.
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.
False invoicing may also be considered invoice fraud. This occurs when a business sends an invoice to a customer to pay for goods or services that the business is aware that the customer did not purchase.
As of the latest update, any business with an annual turnover exceeding ₹5 Crore must follow e-invoicing norms. This rule applies if your turnover crossed this ₹5 Crore limit in any single financial year from 2017-18 onwards. It is mandatory for all your B2B supplies and for exports out of the country.
How long can a creditor come after you? A creditor can pursue debts from two to 20 years based on the state's statute of limitations. Depending on the state, the statute of limitations' timeline can start on the date you made the last payment or the first missed payment.
Do invoices hold up in court? No, an invoice will not usually hold up in court. An invoice is simply a request for payment, but it's not a legal document and therefore not legally binding. You may be able to legally enforce an invoice if you also have a valid contract.
GST/HST Requirements Across Canada
In addition to BC's PST rules, the Canada Revenue Agency (CRA) requires that any business collecting GST or HST clearly communicate the tax amount to the customer. This can be done through a receipt, invoice, sign, or contract.
An invoice gains its legal binding status when it adheres to certain standards, such as being a written record of the transaction, including the acceptance of terms by both parties, and containing specific details such as the date of issue, description of goods or services, the amount to be paid, and the parties ...
If no specific payment deadline has been communicated or agreed upon, most customers are generally expected to pay within 30 days of receiving the invoice or the goods or services provided. This 30-day standard is a common default in many business transactions, but it is not legally fixed.
It might surprise many companies that unpaid invoices, under a simple contract, can be legitimately chased for up to 6 years. Legal proceedings would need to be issued within 6 years of the date of the invoice to prevent any claim from being statute barred.