Buying a business: what due diligence really uncovers

Corporate & Commercial22 April 20256 min read

Buying a business is one of the largest bets a person can make, and it is usually made on someone else’s account of how the business is doing. Due diligence is the disciplined process of testing that account before your money is committed, not because the seller is dishonest, but because what a business looks like from the outside and what it is actually worth are rarely the same thing. Done well, it either confirms your decision or gives you the leverage to change the price, the terms, or your mind. Here is what it is designed to uncover.

Whether the numbers are real

The first job is to confirm the business actually earns what it claims to. That means going behind the summary figures to the tax returns, bank statements, and management accounts, and asking whether the profit is sustainable or propped up by one-off events, a single large customer, or the seller working unpaid hours no buyer would replicate. A business that makes its money from three clients is a different, and riskier, proposition from one with three hundred, whatever the headline profit says.

What you are actually buying

A deal can be structured as a purchase of the company’s shares or a purchase of its assets, and the difference is fundamental. Buy the shares and you inherit the company whole, its history, its contracts, and its liabilities, including ones nobody has mentioned. Buy the assets and you can often leave the unwanted risks behind with the seller. Which structure suits you is one of the earliest questions worth a lawyer’s eye, because it shapes your tax, your risk, and the whole shape of the contract.

The liabilities that travel with it

Due diligence looks hard for obligations that come attached to the business: unpaid tax, employee entitlements accrued over years, warranty claims, environmental exposure, litigation on foot or on the horizon, and personal guarantees the owner has given. It also checks whether key contracts, with customers, suppliers, and landlords, survive a change of ownership at all, or whether they let the other side walk away the moment you take over. A contract that terminates on sale can hollow out the very thing you are paying for.

Whether the value walks out the door

In many businesses the real asset is people and relationships. It is worth understanding whether the customers are loyal to the business or to the departing owner, whether key staff will stay, and whether the seller is restrained from opening a competing business next door the week after settlement. A sensible non-compete and a proper handover period are often as valuable as anything on the balance sheet. If the business shares owners, the shareholders’ agreement and how they exit deserves equally close reading.

Turning findings into terms

Due diligence is not just fact-finding; it is the raw material for the contract. What you uncover becomes the warranties the seller gives you, the indemnities that protect you if something hidden surfaces later, the adjustments to the price, and sometimes the conditions that must be satisfied before completion. A concern found early is a term you can negotiate; the same concern found after settlement is a dispute. This article is general information only and is not legal advice, engage a lawyer and accountant to conduct due diligence tailored to the specific business before you commit.