Settlement and exit agreements in the United Kingdom
Reviewed by Mellow Editorial Team, HR & payroll content team
Settlement agreements are legally binding contracts that end an employment relationship on agreed terms, typically including a payment to the employee in exchange for waiving the right to bring most employment tribunal claims. They are the standard tool UK employers use to manage exits cleanly and with certainty.
What a settlement agreement is and when to use one
A settlement agreement (previously called a compromise agreement) is a written contract under which an employee agrees not to pursue specified legal claims against the employer. In return, the employer usually pays a sum of money, and often provides an agreed reference.
They are appropriate in a range of situations: redundancy where you want finality beyond the statutory process, performance or conduct exits where a tribunal claim feels possible, mutual separations where both sides simply want a clean break, or any situation where the risk of future litigation outweighs the cost of settlement.
A settlement agreement is not a shortcut around a fair process. Courts and tribunals look at the overall picture. Using one to bypass a genuine performance or disciplinary procedure can still be problematic if the employee later argues the agreement was signed under duress.
Legal requirements for a valid agreement
For a settlement agreement to be legally binding and to effectively waive statutory employment rights, several conditions must be met:
- The agreement must be in writing.
- It must relate to a specific complaint or proceedings (or identify the claims being waived).
- The employee must have received advice from a relevant independent adviser — typically a solicitor, certified trade union official, or authorised advice centre worker — about the terms and their effect on the employee's ability to pursue tribunal claims.
- The adviser must be identified in the agreement and must hold professional indemnity insurance.
The employer almost always contributes to the employee's legal costs for obtaining this advice. There is no statutory minimum amount, but a contribution of £250–£500 is common for straightforward cases; more complex exits warrant more. Refusing to pay anything reasonable risks the process breaking down.
Protected conversations and the without-prejudice rule
Before a settlement agreement is signed, employers and employees often have preliminary discussions. Two legal concepts protect those conversations.
Without prejudice applies where there is an existing dispute. Anything said in a genuine attempt to settle that dispute generally cannot be used as evidence in litigation. If there is no pre-existing dispute, the rule does not apply.
Protected conversations under section 111A of the Employment Rights Act 1996 go further. They allow an employer to raise the possibility of a settlement even before any dispute exists, without that conversation being admissible in an unfair dismissal claim. However, the protection does not cover discrimination claims or automatically unfair dismissal, so care is still needed.
Either way, keep a record of what was discussed, avoid any pressure or misleading statements, and give the employee reasonable time to consider the offer.
Tax treatment of settlement payments
How the payment is taxed depends on what it is for.
Payments that represent salary, notice pay, bonuses or holiday pay are subject to income tax and National Insurance in the normal way — they are earnings, regardless of how the agreement labels them. Employees pay income tax at 20%, 40% or 45% depending on their band, above the £12,570 personal allowance, and National Insurance at 8% (then 2% above the upper earnings limit). The employer pays 13.8% employer National Insurance on these elements.
Payments that are genuinely compensatory — for the loss of employment itself — benefit from a £30,000 tax-free threshold. Amounts above £30,000 attract income tax but not National Insurance up to a point. The rules here interact with post-employment notice pay (PENP) calculations, which can be technical. Take advice on the correct split, because getting it wrong creates PAYE liability for the employer.
Employer contributions to the employee's legal fees are generally tax-free if paid directly to the adviser.
Practical points on drafting and process
A well-drafted agreement should clearly identify the parties, the termination date, the payments being made and their tax treatment, the claims being waived, confidentiality obligations, and any agreed reference wording. Be specific about which claims are settled — a catch-all provision without identifying complaints will not satisfy the statutory requirements.
Give the employee adequate time to consider the offer. ACAS guidance suggests a minimum of ten calendar days, and rushing an employee into signing undermines both the legal validity and the practical goodwill of the process.
Once signed, keep to the agreed payment timeline. Late payment after an employee has waived their claims damages trust and can generate unnecessary disputes.
If auto-enrolment pension contributions are owed up to the termination date, ensure these are paid correctly alongside final salary. Statutory annual leave of 5.6 weeks (28 days for a standard five-day week) accrues until the termination date — any untaken balance must be paid out.
This article provides general information only and is not legal advice. For advice on a specific situation, consult an employment solicitor.
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