A settlement agreement usually arrives at an awkward moment: after a difficult meeting, sometimes alongside the phrase "protected conversation", often with a deadline that feels designed to rush you. The document looks dense, the numbers look fixed, and the cover email implies that the terms are largely standard. None of that is quite true.
A UK settlement agreement is a contract. Like any contract, it is negotiable — within limits — and the leverage sits much earlier in the process than most employees realise. By the time both sides are exchanging redlines on clause 14.3, the commercial shape of the deal has already been decided. This piece is about the parts of the negotiation that actually move the outcome.
Heads of terms: where the deal is really made
Before solicitors start drafting, both sides typically agree the commercial spine of the deal — sometimes in writing, sometimes in a short call. This is the heads of terms stage, and it is where you have the most room to manoeuvre. Once a figure or a form of words is in a draft, moving it feels like a concession; before it is in the draft, it is just a discussion.
A useful heads of terms covers, at minimum:
- Termination date and notice treatment — whether you work your notice, are placed on garden leave, or receive a payment in lieu of notice (PILON). Each has different tax and reference consequences.
- The compensation figure — broken down into its components (notice, ex gratia, statutory redundancy if relevant, accrued holiday, bonus, share awards).
- Reference wording — agreed in full and annexed to the agreement, not left to "standard policy".
- Announcement wording — what colleagues, clients and LinkedIn will be told.
- Restrictive covenants — whether existing post-termination restrictions are waived, varied, or reaffirmed.
- Outplacement, equipment, and benefits — laptop retention, continued private medical cover during a notice period, professional subscriptions.
- Confidentiality and non-derogatory clauses — and crucially, whether they are mutual.
If you can get these seven points right in principle before anyone drafts, the rest of the negotiation tends to follow.
The tax architecture: £30,000 is not a magic number
Employment settlement tax is the area where employees most often misread their own deal. The headline rule is well known: a genuine ex gratia termination payment can be paid free of income tax and National Insurance up to £30,000. Anything above that threshold is taxable in the normal way.
The complication is what counts as "ex gratia" in the first place.
- Notice pay — whether worked, paid as PILON, or treated as Post-Employment Notice Pay (PENP) under HMRC's rules — is taxable as earnings. It does not sit inside the £30,000 tax-free envelope.
- Accrued but untaken holiday is taxable as earnings.
- Contractual bonuses and commission earned before termination are taxable as earnings.
- Payments for restrictive covenants are taxable, and employers will sometimes attribute a small nominal sum (often £100 or similar) to make the covenant enforceable.
- Genuine compensation for loss of office — the part that reflects the fact you are losing your job rather than being paid for work done — is what the £30,000 exemption is designed for.
A common employer tactic is to present a single round number — say, £45,000 — without breaking down how much of it is notice, how much is ex gratia, and how the PENP calculation has been done. Always ask for the breakdown in writing. The difference between a well-structured £45,000 and a badly structured £45,000 can be several thousand pounds in your bank account.
A note on COT3 agreements: where the settlement is reached through Acas conciliation rather than as a private contract, the document is called a COT3. The tax analysis is broadly the same, but the procedural route is different and the independent legal advice requirement does not apply in the same way. Most employees nonetheless take advice before signing one.
References, announcements and the long tail
The compensation figure pays your bills for a few months. The reference and the announcement wording shape the next several years of your career. They deserve disproportionate attention.
A workable reference clause typically:
- Sets out the agreed reference text in a schedule to the agreement.
- Obliges the employer to provide that reference, in that wording, in response to any request from a prospective employer.
- Names a specific individual (or role) who will respond, so requests do not vanish into a generic HR inbox.
- Addresses what happens if the named individual leaves the business.
- Aligns with the internal announcement and any LinkedIn statement, so the story is consistent across channels.
"Factual references only" is the employer's default position and is rarely in your interest. A short, agreed positive reference is usually achievable and costs the employer nothing.
Independent legal advice: not a formality
For a UK settlement agreement to validly waive statutory employment claims, the employee must receive independent legal advice from a relevant independent adviser — typically a qualified solicitor — who is identified in the agreement and whose firm carries appropriate insurance. The employer almost always contributes to the cost of that advice.
It is tempting to treat this as a tick-box exercise: find an adviser, get the certificate signed, move on. That misreads the moment. The adviser's job is not only to explain the clauses but to tell you, candidly, whether the deal is good, mediocre or poor relative to the strength of your underlying claims. That assessment is the single most valuable output of the process, and it is the reason the statutory requirement exists.
Practical points worth knowing:
- The employer's contribution is usually capped (commonly a few hundred pounds plus VAT). If your matter is complex, you may need to top this up — and it is often worth it.
- You choose the adviser, not the employer. An adviser recommended by the employer is permissible but not obligatory.
- The advice must cover the terms and effect of the agreement, particularly its effect on your ability to bring claims. It does not have to recommend that you sign.
- If you are negotiating from abroad, or your role has a cross-border element, make sure your adviser understands the jurisdictional overlay.
Closing
Settlement negotiations reward preparation and calm more than aggression. Get the heads of terms right, understand which parts of the money are taxable and which are not, treat the reference as a long-term asset, and use the independent legal advice stage as a genuine strategic checkpoint rather than a signature exercise.
FAQ
Q: My employer wants me to sign within 48 hours. Is that allowed? A: Acas guidance recommends a minimum of ten calendar days to consider a settlement agreement, and most reasonable employers follow it. A 48-hour deadline is almost always negotiable, and pushing back on it is not seen as hostile.
Q: Can I negotiate the reference wording after I've signed? A: In practice, no. Once the agreement is signed, the reference clause is fixed at whatever the document says. This is why the agreed reference should be drafted as a schedule and attached before signature, not left to "policy".
Q: If my payment is structured partly as PILON, do I lose the £30,000 exemption entirely? A: No — the exemption still applies to the genuine compensation element. But the PILON portion (and any Post-Employment Notice Pay calculated under HMRC's rules) is taxed as earnings and does not sit inside the tax-free band. The breakdown matters.
For UK employees reviewing a settlement agreement or COT3, JustiScript provides document review and consultations with England-qualified solicitors in English and Chinese.