Life after completion: warranties, retentions and handover.

Does a seller have obligations after a business sale completes?

Usually, yes. Completion transfers ownership and releases the agreed money, but it rarely ends the seller's involvement entirely. Depending on how the transaction has been documented, continuing matters can include warranties given about the business and the consequences of any breach, indemnities covering identified risks, deferred consideration or an earn-out still to be paid, part of the price held in a retention or escrow account, restrictive covenants limiting what the seller may do next, an agreed handover, a consultancy or employment arrangement, and post-completion adjustments to the price once the completion accounts are settled.

None of this is standard in the sense of applying automatically. What the seller owes after completion is whatever the share purchase agreement, disclosure letter, tax covenant and any ancillary agreements say — no more and no less. That is why the terms governing the period after completion deserve the same attention as the price, and why they should be understood before they are signed rather than after.

What happens after selling a business?

Ownership passes, the completion payment is made, filings are dealt with and the buyer takes control. Then a quieter period begins in which several clocks run at once. The completion accounts are prepared and the price is adjusted up or down. The handover is delivered. Warranty periods run and eventually expire. A retention is held and, if nothing has been claimed, released. Deferred instalments fall due. An earn-out period runs and is measured. Restrictive covenants apply throughout their agreed term.

The deal has completed and nothing else remains are therefore two different statements, and the gap between them is where a surprising amount of value sits. Sellers who diarise the key dates at completion — adjustment deadline, retention release, warranty expiry, earn-out measurement, covenant end — retain control of the process. Sellers who file the documents and move on tend to be reminded of them by someone else's letter.

What are business sale warranties?

Warranties are statements of fact about the company that the seller gives to the buyer in the purchase agreement: that the accounts have been properly prepared, that there is no undisclosed litigation, that the company owns its assets and intellectual property, that employment and pension arrangements are as described, that tax filings are up to date, and typically many more. They serve two purposes. They force disclosure, because the seller must correct anything untrue before signing. And they allocate risk: if a warranty turns out to have been wrong and the buyer suffers loss as a result, the buyer may have a claim.

Disclosure is the seller's protection. Matters properly disclosed in the disclosure letter are generally carved out of the warranty given, so an issue that has been disclosed accurately is usually not a claim. The instinct to disclose as little as possible is the wrong one; the discipline is to disclose fully, specifically and with supporting documents. Warranties are also limited by negotiation — a financial cap, a de minimis for small items, a threshold before any claim can be brought, and time limits, with the tax period conventionally running longer than the general one. Warranty and indemnity insurance is available on some transactions and changes the analysis. How warranties, limitations and disclosure operate in your particular agreement is a legal question for your solicitor.

What is an indemnity?

An indemnity is a promise to reimburse the buyer for a specified type of loss, usually in respect of a risk that has already been identified — an ongoing dispute, an environmental issue, a known tax exposure, a contract of doubtful status. Broadly, a warranty is a statement whose breach gives rise to a claim in damages, with the buyer generally needing to establish the loss it has suffered; an indemnity is a payment obligation triggered by the specified circumstance, which tends to be a more direct route to recovery. Indemnities are also frequently drafted outside some of the limitations that apply to warranty claims.

In practice the distinction is less tidy than that summary suggests, and everything depends on the drafting: what triggers the indemnity, what losses it covers, whether it is capped, how long it lasts, and who controls the conduct of any third-party claim. Sellers should be alert to indemnities being introduced late, after diligence, as a way of dealing with something the buyer would otherwise have priced. Take your solicitor's advice on the specific wording; general descriptions of the difference are not a substitute for reading the clause.

Can part of the sale price be retained?

It can, where the parties agree to it. A retention is an amount withheld from the price, often placed in a joint escrow account controlled by the parties' solicitors, and released after an agreed period or once a defined matter is resolved. Buyers commonly seek one where there is an identified uncertainty — a contested claim, an unresolved tax position, a consent still outstanding, a completion adjustment that cannot yet be calculated — or as a practical source of recovery for warranty claims.

Retentions are not a feature of every transaction, and their presence, size and duration are negotiable. Where one is agreed, the terms that matter most to the seller are the release conditions and the mechanics: exactly what must happen for the money to be paid, on what date, who decides, what happens if a claim is notified before the release date, whether interest accrues, whether the funds sit in escrow with a genuinely independent stakeholder rather than with the buyer, and whether a partial release is available once part of the uncertainty falls away. A retention with vague release conditions is, in commercial terms, a discount described as a delay.

What happens to an earn-out after completion?

It continues to run, and it is measured against a business the seller no longer controls. Deferred consideration is a fixed amount payable later, so the exposure is essentially the buyer's ability and willingness to pay. An earn-out is variable and depends on defined performance, so the exposure also includes how the business is run, how the results are calculated and how disputes are resolved. Both create continuing rights that need to be tracked after completion: instalment dates, information rights, measurement periods and any security given.

The detailed mechanics — measurement definitions, conduct and ring-fencing covenants, protection, and how to structure the payment curve — are set out in the earn-outs and deferred consideration guide. The point relevant here is that these are the elements most likely to require the seller's continued attention after the celebration is over.

Can I start another business after selling?

Subject to the restrictive covenants you have agreed, usually yes — but read them carefully before doing anything. Buyers typically require the seller not to compete with the business, not to solicit or deal with its customers, not to poach employees, and not to interfere with supplier or other commercial relationships, for a defined period, within a defined geographic area and in relation to a defined activity. These covenants are given personally, they survive completion, and they are part of what the buyer is paying for: goodwill it has bought is worth less if the person who created it can immediately recreate the business next door.

The commercial questions to settle before signing are scope, duration and definition: how widely the restricted business is described, how the customer group is defined and over what look-back period, whether the geography reflects where the company actually trades, and whether ordinary activities you intend to pursue — consultancy in the sector, an investment in an adjacent business, a non-executive role — are inadvertently caught. Whether a particular covenant would be enforceable in a given set of circumstances is a legal question that depends on the drafting and the facts; ask your solicitor rather than assume that a wide restriction will not bite.

Do I have to stay after completion?

Only to the extent you have agreed to. Most sales involve some handover, because much of what the buyer has paid for — customer relationships, supplier terms, technical knowledge, the informal understanding of how the business works — transfers through people rather than through documents. The practical areas usually covered are introductions to key customers and, where relevant, to their decision-makers; supplier and subcontractor relationships and any informal terms; the management team and staff, including who does what in practice; systems, software and passwords, and the data behind them; banking mandates, insurances, licences and dealings with regulators or trade bodies; industry knowledge such as pricing conventions and seasonal patterns; and the operational know-how that has never been written down.

Define this before completion, not after. A handover schedule that states the length of the period, the number of days, the specific objectives, who the seller reports to and what happens when it ends protects both sides: the buyer gets the transfer it paid for, and the seller gets a finish line. Where the arrangement is paid, whether as consultancy or employment, the terms should be documented in their own agreement with the same care as the sale documents.

Staying involved: consultancy, employment or equity

Continued involvement takes several forms. A consultancy arrangement for an agreed number of days is the most flexible and the easiest to end. An employment contract gives a defined role, remuneration and notice, and brings the seller inside the new owner's management structure. A board or non-executive position keeps the seller involved in direction without day-to-day responsibility. Retained equity, common in partial sales, aligns the seller with a later exit. Earn-out participation ties involvement to the payment of part of the price.

Whichever applies, establish four things in writing before signing: what you are responsible for, what authority you actually hold, how much time it requires, and what you are paid. Sellers most often regret arrangements where responsibility survives but authority does not — accountability for results in a business now managed by someone else. Where involvement is linked to an earn-out, the authority question is not a matter of comfort; it is the difference between a payment you can influence and one you can only hope for.

Records, claims and keeping your own file

Keep a complete personal set of the transaction documents: the purchase agreement and its schedules, the disclosure letter and all disclosure bundles, the tax covenant, escrow and retention documentation, any consultancy or employment agreement, and an index or export of the due diligence data room as it stood at completion. If a question arises two years later about what was disclosed, that file is the evidence, and access to the buyer's copies is no longer within your control.

Two practical points follow. First, agree in the documents what continuing access the seller has to the company's records where it is needed to deal with a claim, a tax enquiry or the seller's own tax return. Second, keep the relationship with the solicitor and accountant who acted on the sale open until the last obligation has expired; they hold the context, and the cost of re-establishing it elsewhere is significant. Retention periods for particular categories of record are set by law and by the terms of the agreement, and should be confirmed with your advisers rather than assumed.

The transition itself

For an owner-manager of long standing, the weeks after completion are frequently stranger than expected. The proceeds arrive, the responsibility ends, and the structure that organised the working week disappears at the same time. That is worth planning for with the same deliberation as the deal, particularly where the sale funds retirement.

Some sellers move directly into a defined next phase: another venture, an investment portfolio to manage, non-executive or advisory work in the same sector, or a genuine retirement with commitments already in place. Others use an agreed consultancy period as a bridge, which works well where it has a stated end date and less well where it does not. Where the sale is part of a retirement plan, the wider considerations are covered in selling a business to retire. Decisions about how the proceeds are invested or drawn are for a regulated financial adviser.

Where sellers lose value after the price is agreed

Sellers often stop negotiating once the headline price is agreed. The terms that determine what is actually received — the retention, the adjustment mechanic, the warranty cap and limitation periods, the covenant scope, the handover commitment — are typically settled after that point, when attention has moved on. That is the most expensive lapse in concentration in a business sale.

Post-completion terms can change the real deal materially. A price with a substantial retention, a long warranty tail and an uncapped indemnity is a different transaction from the same price paid in full at completion, and the two should not be compared as though the number were the point of comparison.

Quantify handover obligations before completion. Available as required, reasonable assistance and support with the transition are phrases that read as courtesies and behave as commitments. Days, dates and a defined scope prevent an amicable arrangement from becoming a grievance.

Vague involvement during an earn-out is the most reliable source of post-completion conflict. Where the seller's contribution is expected but undefined, both parties end up feeling let down, and the disagreement arrives attached to a payment.

Restrictive covenants matter most to the sellers least likely to read them. An entrepreneurial owner who has already thought about what comes next should test the drafting against that plan before signing, not afterwards.

Legal completion is not economic completion. The deal finishes when the last retention has been released, the warranty periods have expired and the final instalment or earn-out has been paid — which is often a year or more after the day everyone shook hands.

Can a buyer make a claim after completion?

It can, within the limits agreed in the purchase agreement. Those limits normally include a financial cap, a minimum size for individual and aggregate claims, and time limits by which a claim must be notified, with tax matters usually running for longer than general warranty matters. Accurate and specific disclosure before signing is the seller's principal protection, and the disclosure letter is the document that determines it.

Where this fits

Most of what a seller owes after completion is decided much earlier: at heads of terms, and during diligence. If you are still at that stage, see heads of terms and deal structure and due diligence preparation, read further in the deal structure Insights archive, or start with selling a business.

This page is general information about the law and tax treatment of business sales in the United Kingdom as at 9 August 2026. It is not personal advice, and the treatment of any particular transaction depends on how the deal is structured, the shareholders' own circumstances, the status of the company, the legislation in force at completion and the interpretation of your own accountant and solicitor. Take advice on your own facts before acting.