A settlement agreement usually arrives at an awkward moment. The employee has just been told their role is at risk, or a grievance has soured, or a performance process is grinding towards an exit. The employer wants finality; the employee wants dignity and a fair number. Both sides reach for a template — and that is where most of the avoidable mistakes happen.
A UK settlement agreement is a statutory contract that waives an employee's right to bring most employment claims in exchange for agreed terms. To be binding, it must meet specific conditions, including that the employee has received independent legal advice from a relevant adviser on the terms and effect of the agreement. That single requirement shapes the whole negotiation — because both parties know, from the outset, that a lawyer will read every line.
Start with heads of terms, not a draft contract
The fastest route to a clean settlement is a short heads of terms document — ideally one page — agreed before anyone circulates a 15-page draft. It forces both sides to be concrete about the things that genuinely matter, and it stops negotiations drifting into clause-by-clause skirmishing.
A workable heads of terms typically covers:
- Termination date and reason — including whether the employee works their notice, is placed on garden leave, or leaves immediately with a payment in lieu of notice (PILON).
- Financial package — split clearly between contractual sums (salary to termination, accrued holiday, bonus, notice pay) and the ex gratia termination payment.
- Tax treatment — which elements are taxable in full, and which are intended to fall within the £30,000 tax-free threshold for genuine compensation for loss of employment.
- Reference — agreed wording, attached as a schedule, and who at the company will provide it.
- Announcement — internal and external wording, including LinkedIn.
- Restrictive covenants — confirmed, waived, varied, or reaffirmed with consideration.
- Confidentiality and non-derogatory clauses — and whether they are mutual.
- Outstanding matters — shares, options, expenses, equipment, pension contributions.
If both sides can agree this list in principle, the long-form drafting becomes an administrative exercise rather than a fight.
The tax question: what £30,000 actually means
The £30,000 tax-free figure is the most misunderstood number in employment settlement tax. It does not mean the first £30,000 of any settlement is tax-free. It applies only to payments that are genuinely compensation for the loss of employment — typically the ex gratia element — and only to the extent that those payments are not otherwise taxable as earnings.
In practice:
- Salary, accrued holiday, contractual bonus and PILON are taxable as earnings in the normal way. Since the rules on post-employment notice pay (PENP) tightened, employers must calculate the notice element of any termination payment and tax it as earnings, even where the contract has no PILON clause.
- Statutory and enhanced redundancy payments generally fall within the £30,000 exemption (statutory redundancy is itself tax-free up to the cap).
- Compensation for injury to feelings in a discrimination context can, in some circumstances, sit outside the £30,000 calculation — but the position is fact-sensitive and HMRC's view is narrower than employees often hope.
- Payments for restrictive covenants are taxable as earnings and usually require a nominal consideration to be enforceable.
The drafting matters. A schedule that simply records a lump sum without breaking down its components invites an HMRC challenge and exposes the employee to a clawback indemnity. Both sides benefit from a clear, itemised payments schedule.
References, announcements and the afterlife of the deal
A settlement agreement ends the employment relationship but not the employee's career. The reference clause is therefore one of the most valuable parts of the deal, and one of the cheapest for the employer to concede.
Three points worth negotiating:
- Agreed wording, annexed to the agreement. A factual reference — dates, role, responsibilities — is the market standard. Employees in senior roles should push for one or two lines of substantive comment.
- A named point of contact. References sent to a generic HR inbox often go unanswered when the employee has left and systems have changed. Name someone.
- Consistency with verbal references and LinkedIn endorsements. If the agreed reference says one thing and a former manager says another on a call, the value of the clause collapses.
The same logic applies to internal and external announcements. A short agreed line — circulated to the team and used on LinkedIn — protects both the employee's narrative and the employer's reputation.
COT3 or settlement agreement?
Where Acas is involved — typically through early conciliation after a tribunal claim has been intimated or issued — settlement can be recorded on a COT3 form rather than a full settlement agreement. A COT3 is shorter, does not require independent legal advice as a condition of validity, and is binding once both parties agree the terms with the Acas conciliator.
A COT3 is often the right tool when:
- A tribunal claim has been issued or is imminent.
- The terms are narrow — essentially a payment, a reference, and mutual confidentiality.
- Speed matters more than bespoke drafting.
A full settlement agreement is usually preferable where there are restrictive covenants to vary, share schemes to address, tax structuring to document, or post-termination obligations that need careful drafting. The two routes are not interchangeable, and the choice should be made early.
Independent legal advice: not a formality
The requirement for independent legal advice is sometimes treated as a tick-box exercise — a signature on a certificate at the end of the process. That misreads what the adviser is actually doing.
A good adviser will: pressure-test the commercial offer against the strength of the underlying claims; identify clauses that are unusually onerous or unenforceable; check the tax treatment and PENP calculation; negotiate the reference and announcement; and make sure the employee understands what they are giving up. Most employers contribute towards the cost of this advice, and it is normal to negotiate the contribution upwards where the agreement is complex.
For HR teams, the corollary is that sending a polished draft to an employee who has no adviser does not speed things up. It usually slows them down, because the first adviser the employee instructs will have questions that could have been resolved in heads of terms.
If you are negotiating a UK settlement agreement and want a structured review of the draft, the tax schedule, and the reference wording, JustiScript offers document review and consultations with England-qualified solicitors in English and Chinese.
FAQ
Is the £30,000 tax-free amount guaranteed on any settlement? No. It only applies to payments that are genuine compensation for loss of employment, not to salary, notice pay, holiday, or contractual bonuses. Post-employment notice pay rules mean that part of an apparent ex gratia sum is often reclassified as taxable earnings.
Can I negotiate the reference after I have signed? In practice, no. Once the agreement is signed, the reference clause is fixed. Always agree the exact wording and annex it as a schedule before you sign, and name the person who will provide it.
My employer offered a COT3 through Acas instead of a settlement agreement. Is that worse? Not necessarily — a COT3 is binding and enforceable, and it can be quicker. It is usually less suitable where the deal involves complex tax structuring, share awards, or varied restrictive covenants, in which case a full settlement agreement is the better vehicle.