Why does self-employment change the case for critical illness cover?

Employees who fall ill have Statutory Sick Pay as a fallback, worth £123.25 a week for up to 28 weeks, paid by the employer. Sole traders and most directors who pay themselves mainly in dividends sit outside that system, so a serious diagnosis can stop income from the day it happens, leaving savings, a partner’s earnings or state benefits as the only immediate support. A critical illness lump sum is designed to bridge exactly that gap, arriving when income has stopped.

How should a self-employed person approach sizing a lump sum?

Start from your own numbers rather than a generic figure: work out monthly household outgoings, estimate how many months savings alone could cover, and decide a realistic recovery period that savings could not fund. The gap between what savings would cover and that recovery period is the sum worth quoting for, and it should be revisited whenever income, savings or outgoings change materially, since self-employment income is often irregular. Sizing it honestly against real figures matters more than guessing a round number.

Can a sole trader treat critical illness premiums as a business expense?

Generally, no. Premiums for a personal critical illness policy are paid from post-tax income, and sole traders cannot treat them as a deductible business expense. HMRC’s manual sets a narrow exception for key-person cover: a deduction is allowed only where the sole purpose is meeting a trading loss of profits and the policy is pure term cover with no investment content. The treatment for directors paying premiums through a company can differ, so directors should confirm the rules with an accountant.

Critical illness

Critical illness cover for the self-employed

The short answer

Self-employed people have no employer sick pay and usually no access to Statutory Sick Pay, so a serious diagnosis can stop income immediately. Critical illness cover pays a tax-free lump sum sized to clear debts and fund a recovery period. Sole traders cannot deduct the premium as a business expense.

Written by Andrew Buscu. Reviewed by Muhammad Junaid.

Published 15 September 2026. Last reviewed 21 September 2026. Next review due 15 December 2026.

What to know about critical illness cover for the self-employed

Statutory Sick Pay is payable to employees only, not to the self-employed. Read more
Sole traders and most dividend-paid directors fall outside it, leaving savings or a partner’s income as fallback. Read more
Sizing cover should start from actual monthly outgoings and a realistic recovery period, not a round number. Read more
HMRC allows a premium deduction only for pure term key-person cover meeting a specific trading-loss purpose. Read more

Thinking about critical illness cover for the self-employed

What works well

A lump sum arrives exactly when self-employment income stops.
Sizing from real outgoings keeps the premium honest.
The pay-out is generally tax-free on a personal policy.

What to watch

Irregular income makes affordability reviews essential.
The premium is a personal, post-tax cost for sole traders.
Stopping premiums ends the cover with nothing returned.

The gap the lump sum is designed to fill

The safety net most employees barely notice is largely absent when you work for yourself. Statutory Sick Pay — £123.25 a week for up to 28 weeks — is payable by employers to eligible employees; sole traders and most company directors paying themselves mainly by dividends sit outside it, leaving savings, a partner’s income or state benefits as the fallback. That gap is precisely what a critical illness lump sum is designed to bridge: one payment, arriving when income has stopped, sized to clear the debts and fund the household through a realistic recovery period. Two practical points deserve attention. First, sizing: work from your actual monthly outgoings and the income-replacement period you could not self-fund, not a round number. Second, tax: premiums for a personal policy are paid from post-tax income and the pay-out is generally tax-free; sole traders cannot treat the premium as a business expense, and the position for directors paying through a company is different and should be confirmed with an accountant. HMRC’s own manual, BIM45525, allows a deduction for key-person premiums only where the sole purpose is meeting a trading loss of profits and the policy is term cover with no investment content — critical illness policies with an investment element are treated as capital and are not deductible (source 2).

Calculate how many months your household could run on savings alone, then size the lump sum to the gap between that figure and a realistic recovery period — and get quotes on a fixed specification in writing. Whatever the specifics of critical illness cover for the self-employed, the discipline that protects you is always the same: get the insurer’s position in writing, keep the documents with the policy, and make sure the people who would help you claim know the policy exists and where the paperwork lives.

Related guides

Common questions

Why does self-employment change the case for critical illness cover?: Employees who fall ill have Statutory Sick Pay as a fallback, worth £123.25 a week for up to 28 weeks, paid by the employer.^[1] Sole traders and most directors who pay themselves mainly in dividends sit outside that system, so a serious diagnosis can stop income from the day it happens, leaving savings, a partner’s earnings or state benefits as the only immediate support. A critical illness lump sum is designed to bridge exactly that gap, arriving when income has stopped.
How should a self-employed person approach sizing a lump sum?: Start from your own numbers rather than a generic figure: work out monthly household outgoings, estimate how many months savings alone could cover, and decide a realistic recovery period that savings could not fund. The gap between what savings would cover and that recovery period is the sum worth quoting for, and it should be revisited whenever income, savings or outgoings change materially, since self-employment income is often irregular. Sizing it honestly against real figures matters more than guessing a round number.
Can a sole trader treat critical illness premiums as a business expense?: Generally, no. Premiums for a personal critical illness policy are paid from post-tax income, and sole traders cannot treat them as a deductible business expense. HMRC’s manual sets a narrow exception for key-person cover: a deduction is allowed only where the sole purpose is meeting a trading loss of profits and the policy is pure term cover with no investment content.^[2] The treatment for directors paying premiums through a company can differ, so directors should confirm the rules with an accountant.

Sources

GOV.UK. Statutory Sick Pay. Accessed 15 September 2026 (primary source)
HM Revenue & Customs. BIM45525: Specific deductions — insurance: employees and other key persons. Accessed 21 September 2026 (primary source)