There is no strict, universal legal time limit for sending an invoice, but they should be sent promptly. Generally,, in the US and UK, you can invoice for up to 2–6 years after work is completed, based on statutes of limitations for contract disputes. Best practice is to invoice within 30 days to ensure payment.
Unless your contract with them states otherwise they are perfectly within their rights to invoice after three years and they are under no obligation to allow you to pay in instalments.
Technically, there's a time limit on how late you can write an invoice for a customer. But the grace period for collecting outstanding debt is usually very long. In some jurisdictions, you may be able to bill clients even after several years.
Typically, businesses should bill for services or products promptly, but there isn't a specific law that prohibits billing for something from over two years ago directly. The statute of limitations for written contracts in California is four years, and for oral contracts, it's two years.
The standard limitation period for most invoices is six years from the date payment is due. Therefore, while a late invoice may be inconvenient, as long as it pertains to goods or services that were actually delivered, there is nothing legally wrong with a provider issuing an invoice after the due date.
Backdating invoices isn't inherently illegal—but misusing it to manipulate revenue or tax periods risks serious penalties.
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.
Well in short the answer is yes, unless more than six years have passed. The only regulation placing a time limit on collecting a genuine debt is the Limitation Act 1980.
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.
Manner of Issuing Invoice
The invoice shall be prepared in triplicate, in case of supply of goods, in the following manner: (a) The original copy being marked as ORIGINAL FOR RECIPIENT; (b) The duplicate copy being marked as DUPLICATE FOR TRANSPORTER; and (c) The triplicate copy being marked as TRIPLICATE FOR SUPPLIER.
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.
In California, for instance, providers have one year from the date of service to submit claims, which allows for some variation in billing precision and adjustments.
There's no legal time limit that says you must invoice within a certain number of days (though doing it promptly is definitely best practice). So before you go spiraling into worst-case scenarios, remember: you're still entitled to be paid for the work you've done.
Most companies don't realise that they are entitled to chase invoices that go back as far as 6 years. It is important to remember that the time limit starts from when your customer last acknowledged owing the debt or made a payment on account against the invoice, not from when the invoice became due.
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.
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.
An invoice is not a legally binding agreement—but it does serve as a record of a transaction. It's evidence a product was delivered or a service was rendered and an amount is due in return.
Federal law says that invoices remain outstanding for up to 6 years; i.e., you can pursue a client for an unpaid invoice even if that invoice is 6 years old. Past that point, you'll probably need to seek legal action if you want to receive your payment.
Missing or Incorrect Information: No unique invoice number. No issue date or incorrect date. Missing or incorrect company name or address.
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.
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.
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.
You can't bill them for wasting your time, but you might be able to report them as spammers, violating the CAN-SPAM law in the US. This is usually difficult to enforce because the spammers are difficult to track down, but it sounds like you know who these people are.
How to Catch Up on Bills When You Fall Behind