Should I accept less in "full and final settlement"?
The short answer
Only on your terms. In a small claim, saying no to an offer is not, of itself, the unreasonable behaviour that can make you pay their costs, though the court may weigh it2. Saying yes is different: a deal made even on the court's free mediation call is legally binding1. So accept only if the cash, the date and the written wording suit you, interest and fixed sum included.
England and Wales only. WolfX is software, not a law firm.
What you can add
A £5,200 invoice, 70 days late, offered £4,200
Say you invoiced another business £5,200 for machined parts, due on 30 July 2026. On 8 October it is still unpaid, 70 days late, and they email an offer of £4,200 "in full and final settlement". It went late on 31 July, so interest runs at 11.75%: 8%8 over the 3.75% Bank Rate9 in force on 30 June 2026.
- The invoice£5,200.00
- Interest: £5,200 × 11.75% ÷ 365 × 70 days8£117.18
- Fixed sum (invoices from £1,000 to £9,999.99)6£70.00
- Their offer, in full and final settlement−£4,200.00
- What you give up if you accept£1,187.18
That is 22% of the £5,387.18 you are owed today, and interest adds £1.67 a day while you decide. Going to court for the full £5,387.18 is a small claim: a £455 fee10, paid first, which the court can order them to repay2 if you win. Saying yes saves the fee and the wait, and leaves the £1,187.18 with them.
The road ahead
Six steps. All free.
Step 2: Check they can pay, and what kind of offer it is
Look the company up first, using the full check. What they can pay decides what a bigger sum is worth.
Above £10,0002, an offer that says it is made under Part 36 has teeth: win no more than it offered and the court will usually order you to pay their costs from the end of its period4.
A plain email offer lacks that rule4, though the court must still weigh it when it decides costs.
Step 3: Know what "full and final" closes
The words are meant to end the matter: no later claim for the rest, the interest or the fixed sum. Once a debt exists, you are free to agree terms for it5, so the interest is yours to keep, trade or drop.
Treat any deal you agree as binding, though whether a court would hold you to a part payment turns on the facts: a clear agreement, and something given in return. If the gap is large for your firm, have a solicitor who does debt recovery read the wording first.
Step 4: Answer in writing before any money moves
A cheque or transfer marked "in full and final settlement" is the offer arriving by another route. Paying it in, or keeping it, without a word can look like a yes. The safe course is to reply the same day with the letter below.
To decline, write: "I do not accept this as settlement. I am treating the payment as part payment, and the balance remains due." A payment on a debt12 restarts the six-year time limit11 from that day, unless it has already run out.
Step 5: Call it settled only when the money has cleared
Wait for their written yes and the money in your account. Then confirm in one line that the invoice is closed. If they send a settlement agreement, check it releases only what you meant to settle. If a claim is already issued, the standard directions say the court must be told at once3 that it has settled.
Step 6: If they miss the date, go back to the full sum
Your terms said the whole amount is due again, so claim the full amount: send a letter before action, or start the claim if one has gone and its date has passed. With instalments, make one missed payment bring the whole sum back, as the payment plan page shows.
If you do end up in court and they defend a claim of £10,000 or less, the court arranges a free mediation call1, and a deal made there binds you too.
A letter you can copy
Reply to an offer to settle for less
Send it as soon as they offer less in "full and final settlement", before you pay in a cheque or touch the money.
Tap a highlighted gap to see what goes in it.
Send it by email so it is dated, and keep a copy. If a cheque has already arrived, keep it unbanked and say so. If part of the invoice is genuinely disputed, head it "Without prejudice" and send your demand as a separate email. To counter, put your own higher figure in the gap for the sum you will accept, or an earlier date in the pay-by gap. Asking for more is a normal reply, and it costs nothing. If they offer instalments, list each amount and date in the first term and add that one missed payment makes the whole amount due again.
When not to bother
When it isn't worth it
- They are close to going under. A sum in the bank this month can beat a bigger one that does not arrive, so a fair offer may be worth taking fast. Check the company first.
- Part of the invoice is genuinely disputed. A split can be sensible. Ask what is disputed and by when, and take the undisputed part now, as in what happens when a client disputes your invoice.
- The offer is an opening bargain on a clear debt. If the invoice is undisputed and they can pay, counter rather than accept: a higher sum, an earlier date, or the undisputed part now.
- They are offering instalments, not a discount. That is a payment plan, and the full sum stays due unless you agree otherwise. See the payment plan page.
- They are a consumer, or you are outside England and Wales. The interest and fixed sum cover only sales between businesses7, and the court rules here are for England and Wales. Scotland and Northern Ireland have their own courts.

The Wolf's note
An offer is a price for ending the chase. Read it three ways: how much, by when, and what it closes. If one of the three is missing, ask for it in writing before you answer.
Mr. Wolf · the AI inside WolfX
What comes next
Your next move

When it first goes quiet
A struggling client wants a payment plan. Should I agree, and how do I set one up?
Yes, with money on signing, a signed written plan and a clause making the whole balance due if a payment is missed.
7 min read · Letter included
If they still won't pay
What is small claims mediation, and do I have to try it?
Usually, yes. If your defended claim is for £10,000 or less, you must attend one free phone call with a court mediator.
5 min read
My client disputes my invoice. What happens next?
The disputed part waits.
6 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.
