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Legal payment term for invoices for SMEs, freelancers, and individuals

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Updated on: May 19, 2025
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A payment term specifies the period within which a client must settle an invoice after receiving it. In the UK, payment terms are governed by a combination of statutory regulations and contractual agreements. Understanding these terms is crucial for businesses to manage cash flow effectively and ensure timely payments.

Table of contents:

  1. What is a payment term?
  2. Exceptions and custom agreements
  3. How to ensure timely payments?
  4. Sample invoice payment term
  5. Enhance cash flow with Payt
  6. Frequently asked questions about payment terms

What is a payment term?

A payment term defines the timeframe within which a customer is expected to pay an invoice. Common terms include “Net 30,” indicating payment is due within 30 days of the invoice date. These terms should be clearly stated in contracts and invoices to set clear expectations.

PartyTypical TermNotes
B2B (Business-to-Business)Net 30 / Net 60Subject to agreement; must not be grossly unfair to the supplier.
Public sector contracts30 daysMandated by the Procurement Act 2023, effective from 24 February 2025.
B2C (Business-to-Consumer)FlexibleNo statutory standard; terms should be reasonable and clearly communicated.
Large corporationsOften Net 60 or moreMay impose longer terms; however, must ensure terms are not grossly unfair to suppliers.

Exceptions and custom agreements

While standard payment terms are common, parties can agree to custom terms provided they are fair and transparent. The Late Payment of Commercial Debts (Interest) Act 1998 allows suppliers to charge interest on overdue payments and claim compensation. However, parties can contract out of these provisions if the contract provides a substantial remedy for late payment.

Consequences of late payments

Under the Late Payment of Commercial Debts (Interest) Act 1998, statutory interest can be charged on late payments at a rate of 8% above the Bank of England base rate. Additionally, fixed compensation amounts can be claimed, depending on the size of the debt.

Collection fees

If a debt remains unpaid, businesses may engage debt collection agencies, and the associated fees can sometimes be passed on to the debtor, depending on the contractual agreement.

Legal action

Persistent non-payment may lead to legal proceedings, including claims in the small claims court or higher courts, depending on the amount owed.

How to ensure timely payments?

Even the most well-defined payment terms are only effective if your customers adhere to them. Fortunately, there’s plenty you can do to minimise the risk of late payments. With clear agreements, proactive follow-up, and the right tools, you can stay firmly in control of your credit management.

Set clear payment terms

Clearly state payment terms on all invoices, including:
Payment due date (e.g., “Payment due within 14 days of invoice date”).
Consequences of late payment (e.g., interest charges).
Accepted payment methods.
Ensure these terms are also included in contracts and communicated upfront to clients.

Schedule automatic reminders and follow-ups

Implement a system to send reminders:
A friendly reminder shortly after the due date.
A more formal notice a few days later.
A final warning before initiating further action.
Automating this process ensures consistency and reduces administrative workload.

Use accounts receivable software like Payt

Managing multiple invoices manually can be time-consuming. Accounts receivable software like Payt streamlines the process by:
Sending automatic reminders and late notices based on your schedule.
Allowing customers to communicate directly or request payment plans.
Providing real-time insights into payment statuses.
For example, an invoice sent on the 1st of the month can have automated reminders set for the 14th and 21st, ensuring timely follow-ups without manual intervention.

Sample invoice payment term

Including clear payment terms on invoices helps prevent misunderstandings. Examples:

  • “Please settle the outstanding amount within 14 days of the invoice date.”
  • “Payment due: 30 days after invoice date (Net 30).”

Ensure these terms align with contractual agreements and are legally compliant.

Where to include the payment term

Place payment terms prominently on the invoice, typically below the total amount or near the billing summary. Also, include them in your terms and conditions, quotes, and contracts to reinforce clarity.

Enhance cash flow with Payt

Effective credit management involves more than sending reminders; it requires visibility, structure, and control. Payt’s software offers:

  • Invoices paid up to 40% faster
  • Up to 80% time savings in managing receivables
  • Automatic follow-ups for unpaid invoices
  • Consistent, professional communication

Join over 17,000 users who rely on Payt daily to reduce stress and enhance financial certainty.
Want to learn more? Download our brochure.

Frequently asked questions about payment terms

“Net 30” means the full payment for an invoice is due within 30 calendar days from the invoice date. It’s a common term in B2B transactions, providing the buyer time to process payment while allowing the seller to manage cash flow expectations.

“Net 15” indicates that payment is expected within 15 calendar days after the invoice date. This term is often used by freelancers or service providers seeking quicker payment while offering clients some flexibility.

“Net 14” is a less common term indicating that payment is due 14 calendar days from the invoice date. While not standard like Net 30 or Net 15, Net 14 is enforceable if both parties have agreed to it in writing.

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By Sanne de Vries

Sanne is a business consultant at Payt. She helps companies optimise their financial flows with attention to detail and a deep understanding of business processes.

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