What is the Fair Payment Code, and does a signature mean anything?
The short answer
Partly. The Fair Payment Code is a free, voluntary government scheme, and a level records how a business has paid in the past: Gold is 95% of invoices within 30 days, Silver and Bronze 95% within 601. Even Gold lets 5 invoices in 100 run late, and every award lasts two years2. To win Gold, a business must show a contract promising interest at 8% above Bank Rate2, which is what the law already gives you7.
The numbers
What a level tells you.
What you can add
A £6,200 invoice, paid on day 60 by a Bronze customer
Say you invoiced another business £6,200 on 3 August 2026, on 30-day terms, so due on 2 September 2026. Their Bronze award allows payment within 60 days, and they pay on 2 October 2026. That is inside their level and 30 days late in law. Invoices that go late in the second half of 2026 carry 11.75% a year8.
The badge changed none of it. Interest runs at about £2.00 a day from the day after the due date.
The road ahead
Five steps. All free.
Step 1: Look them up in the directory
Step 2: Read the level, then the year
Step 4: Ask for the term in writing
Send the email below. A level says how they pay in general; you need the term for your order. Every signatory has agreed to put payment terms in writing before work begins1, and to accept late payment interest and compensation where a late payment damages your business.
Step 5: Put the term in the order
Write the payment date into the order and say interest applies after it. A date you agree must usually be within 60 days between businesses5, or 30 for public authorities. With none agreed, it is late 30 days after they get your invoice or your work, whichever is later.
A letter you can copy
Email asking a customer to confirm their Fair Payment Code level
Send it when a customer says they are signed up to the Code, before you accept the order.
Tap a highlighted gap to see what goes in it.
Send it by email so the reply is dated, and keep both with the order. Look them up in the directory first. If the reply does not match the entry, ask which is right.
When not to bother
When it isn't worth it
- The customer is small. A small firm may not be in the directory at all; how it has paid you matters more than a missing badge.
- You are paid in advance. A payment term does nothing for an invoice that is already settled.
- The customer is a public body. Councils, NHS trusts and government departments cannot join2; an agreed date must usually be within 30 days5.
- Your contract already says 30 days and interest. Then you hold the term in writing, and a badge adds nothing to it.

The Wolf's note
A level is a record of how they paid others, not a promise about you. Get the term in writing and put it in the order. Then you have a date to hold them to.
Mr. Wolf · the AI inside WolfX
What comes next
Your next move

How do I check how fast a big company pays its suppliers?
Read its own reports.
5 min read
How do I check a new client can pay before I start work?
Only partly. Ten minutes on the free records shows who a client is, not whether it will pay.
6 min read · Letter included
Is this company legit? How do I check a UK company before I work for it?
Go by the company number, not the name.
5 min read · Letter included
Don't want to do this yourself?
The Wolf does every step for you. He works out the sums, writes the letters and keeps track of every date. Nothing goes without your yes.
