Think about the person in your business whose loss would cause the most financial damage: the founder, the lead salesperson, the technical expert, or the director who manages your biggest client relationships. What would happen to revenue, your ability to service debt, and your staff if that person died or became seriously ill tomorrow? For many small businesses, the honest answer is uncomfortable: and key person insurance exists precisely for that scenario.

What key person insurance does

A key person policy is taken out by the business on the life (and often the critical illness) of a key individual. If that person dies or is diagnosed with a covered condition during the term, the policy pays a lump sum directly to the business. The funds can cover lost profits, fund recruitment and training of a replacement, repay business loans, reassure customers and lenders, or simply buy time to restructure without panic.

Who counts as a "key person"?

It's anyone whose absence would materially hurt the business: owners and directors, but also a top salesperson, a lead developer, or someone with irreplaceable client relationships or technical knowledge. In a small team, that might be several people. The test isn't job title: it's how much financial damage their sudden loss would cause.

How much cover do you need?

There's no single formula. Some businesses use a multiple of the key person's salary (often around five to ten times). Others model the profit impact: if the individual generates or protects, say, £500,000 of annual revenue, that figure might be the starting point. A third approach is to cover specific exposures, such as an outstanding loan or the cost and time to recruit and train a replacement. Lenders may also require key person cover as a condition of business borrowing.

Tax treatment: get advice on this

The tax position is often misunderstood. Whether premiums are an allowable business expense, and whether any payout is taxable, depends on what are known as the "Anderson principles": broadly, the cover must be on an employee (not a substantial owner), be short-term term assurance, and exist solely to protect against loss of profits. Where premiums qualify for tax relief, any payout is usually treated as taxable; where they don't, the proceeds are typically received tax-free. Because the outcome varies with the circumstances, your accountant and adviser should review it together before the policy is set up.

Key person cover versus other business protection

Key person insurance protects the business against the loss of someone's contribution. It's distinct from share or partnership protection (which funds the buyout of an owner's stake) and from business loan protection (which clears specific debts). Many businesses need a combination, and it's worth mapping your risks rather than assuming one policy covers everything.

Setting it up

The business applies for, owns and pays for the policy, and is the beneficiary. The individual being covered will need to provide medical information as part of underwriting. It's sensible to review the cover regularly: as the business grows, takes on new borrowing, or its reliance on particular people changes, the right level of cover changes too.

What happens at claim time

Because the business owns the policy, it makes the claim and receives the payout directly. There's no probate to wait for, so funds can reach the business relatively quickly: which is the whole point, since the financial pressure of losing a key person often hits immediately. Keeping policy details, beneficiaries and sums assured up to date makes the claims process smoother at an already difficult time.

Common mistakes to avoid

The usual pitfalls are straightforward to avoid: under-insuring because the true profit impact was never modelled; letting cover fall out of date as the business grows; overlooking critical illness, when a serious illness can disrupt a business as much as a death; and assuming the tax treatment without checking it. A periodic review with your adviser keeps the cover aligned with the business.

The bottom line

Most small businesses couldn't easily absorb the sudden loss of a key person, yet relatively few have cover in place. Key person insurance turns a potential existential threat into a manageable financial event, giving the business the cash and the time to recover. Because the tax treatment and the right level of cover depend on your circumstances, it's worth arranging with professional advice.