Invoice payment terms: a complete guide

An invoice that has been sent is not the same as an invoice that has been paid. Invoice payment terms are the conditions you attach to a bill: how long the customer has to pay, how they should pay, and what happens if they miss the deadline. Getting them right protects your cash flow and removes any ambiguity when a payment runs late. This guide explains the terms you will see most often, the rules that frame them, and how to make sure invoices actually get paid on time. Note that the legal detail below varies from one country to another, so we flag where local rules apply.

What are invoice payment terms?

Payment terms are the agreed rules for settling an invoice. At a minimum they set a due date, but they can also cover accepted payment methods, early-payment discounts, deposits and the consequences of paying late. In practice the whole process runs in three steps.

It helps to separate two situations. Between businesses (B2B), payment terms are often framed by commercial law and there may be a legal default and a cap. When you invoice a consumer, the rules are usually different and driven by your contract or terms of sale. This guide focuses on the business-to-business context, where late payment is most costly.

What do “net 30”, “net 15” and “due on receipt” mean?

Most payment terms are written as a short code. Learning the common ones removes a lot of confusion:

The word “net” simply means the full amount is due within that number of days, with no deduction. A term like 2/10 net 30 combines a deadline with an early-payment incentive: the buyer can knock 2% off if they settle within 10 days, otherwise the full amount is due by day 30.

Is there a standard or maximum payment term?

There is no single global rule, but a few principles hold true almost everywhere. Net 30 is the de facto standard for B2B invoices in most Western markets, and shorter terms such as net 14 are common for smaller suppliers. Beyond that, the legal framework depends on where you and your customer are based.

Two things vary by country and are worth checking locally:

• A legal default that applies when no term is agreed. In the UK, for example, if no term is specified the law treats the invoice as due within 30 days.
• A maximum term for B2B deals. Under the EU Late Payment Directive, public authorities generally must pay within 30 days and business-to-business terms should not exceed 60 days unless expressly agreed and not grossly unfair to the supplier.

Legal detail is indicative, July 2026, and varies by jurisdiction. UK figures reflect the Late Payment of Commercial Debts (Interest) Act 1998; EU figures reflect Directive 2011/7/EU. Always confirm the rules that apply to your contract and country.

What should payment terms on an invoice include?

To be clear and enforceable, an invoice should make the payment terms impossible to miss. At a minimum, include:

• The due date (or the term, such as “net 30 from invoice date”), plus any early-payment discount;
• The accepted payment methods and your bank or payment details;
• Any late payment charges, such as interest or recovery costs, that will apply after the due date.

Stating late-payment charges up front does two jobs: it warns the customer, and it strengthens your position if you later need to recover the debt. Where the law already grants you a right to interest, showing it on the invoice makes that right visible rather than a surprise.

Can you charge interest on late payments?

In many countries, yes. When a B2B invoice is paid late, the supplier often has a statutory right to charge interest on the overdue amount, calculated per day until the balance is cleared. The exact rate is set by national law and usually moves over time, so it must be checked at the moment of calculation.

The UK is a clear example of how this works in practice. Under the Late Payment of Commercial Debts (Interest) Act 1998, a supplier can charge statutory interest of 8% plus the Bank of England base rate on overdue commercial invoices. The EU Late Payment Directive works on a similar principle, with interest tied to the European Central Bank reference rate plus a margin. In both cases the underlying base rate changes periodically.

Rates indicative, July 2026, and jurisdiction-specific. The Bank of England base rate and the ECB reference rate are revised over time, so recalculate using the rate in force on the day the invoice becomes overdue.

What are fixed recovery or compensation costs?

On top of interest, some legal frameworks let a supplier claim a fixed sum for recovery costs on each late invoice, without having to prove the amount spent. The idea is to compensate the seller for the hassle of chasing a debt.

Again the UK is a useful reference. The amount you can claim is tiered by the size of the debt:

Under the EU Directive the equivalent is a minimum of €40 per late invoice, and if your reasonable recovery costs exceed the fixed sum you can usually claim the difference on evidence. Three points hold across most systems:

• The fixed amount applies per overdue invoice, not once per customer;
• It is a flat sum, not a daily charge, and comes on top of any interest;
• If your actual collection costs are higher, you may be able to claim additional compensation with evidence.

Figures indicative, July 2026, and country-specific. UK amounts follow the Late Payment of Commercial Debts (Interest) Act 1998; EU amounts follow Directive 2011/7/EU. Check the values in force in your jurisdiction.

How do you choose the right payment terms?

The right term balances cash flow against competitiveness. Shorter terms bring money in faster but can put off larger buyers who expect net 30 or net 60. A few practical guidelines:

• Default to net 30 unless your sector expects something else, and shorten it for new or higher-risk customers.
• Use deposits or milestone billing on large projects so you are not exposed to the full amount for months.
• Offer an early-payment discount (such as 2/10 net 30) if faster cash flow is worth the small margin cost.
• Run credit checks on new B2B customers before extending long terms.

How do you get invoices paid on time?

Prevention beats collection. Clean invoices, clear due dates and consistent follow-up cut late payments sharply. In practice: invoice promptly, show a precise due date, state your interest and recovery terms, and send a reminder as soon as an invoice becomes overdue.

This is where invoicing software earns its keep. It calculates the due date from the term you choose, adds the required details automatically, tracks the status of every invoice (sent, awaiting payment, overdue) and fires off scheduled reminders. You get a real-time view of your cash flow without re-keying anything, and nothing slips through the cracks.