How to prepare a business for sale: a UK owner's checklist.

Why preparation decides the outcome

A buyer prices two things: the profit they believe is repeatable, and the risk that it is not. Preparation barely touches the first and transforms the second. An owner cannot manufacture growth in six months, but they can remove the reasons a buyer discounts: unexplained adjustments, undocumented relationships, concentration presented without context, and a management team that has never made a decision without the owner in the room. Every one of those is a discount, a warranty, a retention or a delay — and often all four.

The negotiating consequence matters as much as the arithmetic. An owner who produces evidence on request is negotiating from a position of competence; an owner producing it from scratch, weeks late, is negotiating from a position where every subsequent assertion is treated as unverified. That shift in tone is worth real money by the time completion accounts are agreed.

1. Financial records a buyer can test

A buyer's accountant works from management accounts, not from the abbreviated accounts filed at Companies House, and will reconcile the two. Anything that cannot be reconciled becomes a discount or a warranty. Before marketing, make sure monthly management accounts exist for at least the last two full years and the current year to date; that they agree to the statutory accounts after known adjustments; that the sales ledger, stock and work in progress have actually been reviewed rather than rolled forward; and that director's expenses, personal costs and related-party transactions are identified and listed rather than discovered.

Filed accounts, the confirmation statement, registered charges, late-filing markers and officer history are all on the public register, so assume a prospective buyer has read them before your first meeting.

2. Adjustments and add-backs that will survive scrutiny

Maintainable earnings are almost always presented after adjustments. Adding back genuine one-off costs, owner remuneration above market rate, and personal expenditure run through the company is ordinary and expected. Adding back deferred maintenance, discretionary marketing the business will need to keep spending, or a family member's salary where the role has to be replaced is not, and attempting it is expensive: once one add-back fails, every other number is treated as advocacy. Prepare a schedule that states the adjustment, the reason and the evidence, and be willing to drop the weakest items before a buyer removes them for you.

3. Reducing owner dependence

Owner dependence is the single most common value problem in owner-managed companies, and it is a real risk rather than a negotiating device: if the customer relationships, pricing decisions, technical judgement and supplier terms all sit with one person who is leaving, the buyer is purchasing a risk rather than a business. The work is unglamorous — put a second name on the main accounts, write down what you actually do each week, delegate quoting and pricing, and give the management team authority in front of customers well before a buyer meets them.

Where dependence cannot be removed in time, it can at least be priced honestly. Buyers respond far better to a seller who says which relationships need a transition period, and proposes one, than to a seller who claims the business runs itself and is then contradicted by the first management meeting.

4. Contracts, intellectual property and property

Verbal arrangements are normal in established businesses and awkward in sales. Customer terms, key supplier arrangements, licences, distribution rights, software agreements, intellectual property assignments from contractors and developers, and the lease on your premises all need to be findable and, where possible, assignable or capable of surviving a change of control. Two recurring problems are worth checking now: intellectual property built by external developers and never formally assigned to the company, and leases where the landlord's consent is required for a transaction nobody has raised with them.

Where the trading premises are owned personally or through a pension scheme, settle the position before a buyer raises it. Whether the property is sold, retained and leased, or excluded entirely changes the shape of the deal, and it is a poor use of exclusivity to be deciding it then.

5. People and employment

Where a business or part of a business transfers as a going concern, employment obligations follow it and bring statutory duties to inform and consult, so employee arrangements are a diligence topic in their own right rather than an afterthought. Practically, that means written contracts for everyone, an accurate view of holiday and bonus liabilities, clarity on who is genuinely self-employed, and a considered position on which individuals the buyer will want retained and on what terms. Retention arrangements for key staff are best designed before a buyer proposes their own.

6. Customer concentration

Concentration is a matter of fact and cannot be prepared away in a few months, but it can be evidenced. Length of relationship, contract cover, the number of individual decision-makers inside a large customer, the share of that customer's spend you hold, and the switching cost they would face are all reasons a concentrated book may be more robust than the raw percentage suggests. Assemble that evidence before it is asked for; presenting it in response to a challenge always reads as defence.

7. Working capital and cash

Most UK company sales are agreed on a cash-free, debt-free basis with a normal level of working capital delivered at completion. That normal level is calculated from your own historic balance sheets, so the twelve months before a sale are the months that define it. Allowing debtor days to drift, running down stock, or stretching creditors to flatter cash all reduce the working-capital target you will later be measured against, and the adjustment lands on the price. See cash-free, debt-free and working capital adjustments.

8. The data room, built before launch

Assemble the evidence pack while there is no deadline: statutory and management accounts, tax returns, the share register and historic transfers, material contracts, the lease, insurance, employment documents, intellectual property assignments, key policies and the adjustment schedule. Sellers who build this in advance answer diligence requests the day they arrive; sellers who do not spend exclusivity manufacturing documents while the buyer's advisers bill by the hour. Due diligence preparation lists what each workstream asks for.

What sophisticated buyers look for first

Experienced acquirers move quickly to a small number of tests: whether management accounts reconcile to filed accounts, what proportion of revenue is contracted rather than repeat-by-habit, how pricing has moved with cost inflation, how concentrated the customer base is at decision-maker level, how much cash the business absorbs as it grows, and how much of the performance leaves with the seller. A business that answers those six questions with documents rather than assertions is materially easier to underwrite, and easier to underwrite means both a better price and a shorter process.

What owners commonly get wrong

Three errors recur. The first is presenting a forecast instead of a track record: buyers underwrite what happened, and an ambitious forecast that is missed during diligence is worse than no forecast at all. The second is tidying the wrong things — refreshing the website while the share register remains incomplete. The third is treating preparation as a project to run after a buyer appears, which converts every remaining defect into a price chip discovered at the worst possible moment.

Where judgement comes in

Deciding how much preparation is worth doing is a commercial judgement, not a rule. A twelve-month tidy-up that costs you a strong buyer who is active now can be a poor trade. The test to apply is whether the specific defect is one a buyer will price, or one that will simply make diligence longer and more irritating. The first is worth delaying for; the second usually is not.

How long before a sale should I start preparing?

Twelve months is comfortable and allows a full financial year to be reported on the corrected basis. Three to six months is enough to reconcile records, document contracts and build a data room. Under three months you will be answering questions rather than presenting evidence. The realistic overall timetable, including the sale itself, is set out in how long it takes to sell a business.

Should I tell my staff I am preparing to sell?

Not at the outset in most cases. Confidentiality is managed deliberately through the process, and the point at which key people are told is a decision to take with your adviser rather than a fixed rule. Preparation work can nearly always be presented internally as ordinary improvement to reporting, contracts and delegation, because that is exactly what it is. See how to sell a business confidentially.

Do my directors' duties change during a sale?

No. The general duties in Part 10 of the Companies Act 2006, including the duty to promote the success of the company, continue to apply while you are negotiating your own exit, and they apply to co-directors who are not selling as well as to those who are.

Will preparation actually increase the price?

It reliably protects the price and shortens the process; whether it raises the headline multiple depends on what the preparation changes. Removing owner dependence, converting habitual revenue into contracted revenue and evidencing a concentrated customer base can move the multiple, because each reduces the buyer's perceived risk. Tidier paperwork alone does not move the multiple, but it very often preserves the agreed one through diligence.

What is the practical next step?

Start with an honest view of value on your own figures and an assessment of which defects a buyer would price. Request a pre-sale valuation, read how a confidential sale is run in selling a business, or read the complete owner's guide to selling a business in the UK. Where the sale is still some years away, the sequencing decisions come first — see exit planning. Further reading on the same subject is collected in the preparing for sale Insights archive, or contact EXITS.co.uk for a confidential conversation about where the business currently stands.

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.