TL;DR: Permanent health insurance (PHI) is the older UK industry name for what is now commonly called income protection insurance. It pays a monthly tax-free benefit if the insured person is unable to work because of illness or injury, normally after a chosen "deferred period" of 4, 13, 26 or 52 weeks. "Permanent" in the original sense meant the insurer could not cancel the policy as long as the premium was paid - not that the benefit was paid permanently. Modern income protection / PHI policies offer monthly benefit of typically 50 to 65 percent of pre-incapacity gross earnings (insurers cap the percentage so benefit plus State and other income protection does not exceed pre-incapacity net income). Benefits run until the policyholder returns to work, the policy term ends, or the policyholder dies. Group income protection arranged through an employer is usually cheaper but is owned by the employer and ends if the job ends. Individual policies are personal and portable.
Last reviewed May 2026
"Permanent health insurance" (PHI) is the long-standing UK industry term for what most consumers now buy under the name "income protection insurance". The two terms describe the same product: a long-term insurance contract that replaces a proportion of income if the insured person becomes unable to work because of illness or injury. The "permanent" label refers to the insurer's commitment to keep the policy in force while premiums are paid; it does not promise the benefit will keep paying forever in every case.
This guide explains how PHI / income protection works in the UK: the structure of the policy (deferred period, benefit period, definition of incapacity), the limits on benefit levels, the difference between own-occupation and any-occupation definitions, the tax treatment of premiums and benefits, the difference between individual and group policies, and the practical decisions a buyer faces when choosing cover.
What PHI / income protection actually pays
An income protection policy pays a monthly benefit during a period of incapacity. The benefit is a stated proportion of pre-incapacity earnings - usually 50 to 65 percent of gross income, capped at a maximum (often around 60 percent net to ensure the policyholder still has an incentive to return to work). Some policies offer higher percentages on lower income tranches and lower percentages on higher tranches.
The benefit starts after a "deferred period" of typically 4, 13, 26 or 52 weeks from the date of incapacity. The deferred period is chosen at the point of buying the policy and is the main driver of premium cost: a longer deferred period means a lower premium because the insurer pays less often and for less long.
The benefit continues until one of several events: the policyholder is able to return to work; the policy term expires (normally selected pension age, e.g. 60, 65 or 68); the policyholder dies; or the maximum benefit period under a short-term variant policy is reached. Full PHI policies (the traditional structure) pay until policy term end; short-term income protection policies pay for a maximum 12 or 24 months per claim.
The definition of "incapacity"
The single most important policy term is the definition of incapacity. Three definitions are common in the UK market.
Own occupation: benefit is payable if the policyholder cannot perform the duties of their own occupation. This is the most comprehensive definition and the most expensive. It is most relevant to professionals (surgeons, dentists, pilots, musicians) whose income depends on a specific skill set.
Suited occupation: benefit is payable if the policyholder cannot perform any occupation for which they are reasonably suited by training, education or experience. A common compromise between cost and comprehensiveness.
Any occupation: benefit is payable only if the policyholder cannot perform any occupation at all. The most restrictive definition and the cheapest. Activities-of-daily-work tests (similar to the State benefit work capability assessment) are sometimes used as the threshold.
Group income protection schemes (provided through an employer) typically use "own occupation" for the first one or two years of a claim and then switch to "suited occupation" for the remainder. Individual policies more commonly retain "own occupation" throughout. The policy document is the authoritative source.
Tax treatment of premiums and benefits
An individual policy paid from after-tax personal income has a clear tax position: premiums are not tax-deductible (income protection is not on the list of allowable expenses), and benefits paid out are tax-free in the policyholder's hands. The income from the policy does not enter the income tax calculation at all.
A group income protection scheme paid for by the employer is treated as a benefit in kind that is exempt from income tax for the employee (under section 325 ITEPA 2003). The employer takes a corporation tax deduction for the premium as a business expense. Benefits paid out are usually channelled through the employer's payroll and treated as taxable employment income at the time of payment, with PAYE deducted.
The net-tax outcome can therefore be different between an individual policy (lower benefit cap but tax-free) and a group policy (higher gross benefit but taxable through PAYE). Buyers comparing the two need to compare net after-tax benefit, not just headline cover percentage.
"Permanent" health insurance versus other protection products
PHI is sometimes confused with private medical insurance (PMI). They are different products. PMI pays the cost of private medical treatment (consultant fees, diagnostics, surgery, in-patient stays) so the policyholder can avoid NHS waiting lists. PHI pays a monthly income to replace lost earnings while the policyholder is unable to work. The two are complementary, not substitutes.
Critical illness cover (CIC) pays a single lump sum on diagnosis of a specified serious illness from the policy's defined list. The benefit is paid once and the policy then terminates (or, on multi-claim policies, the cover for that illness category ends). CIC and PHI cover different risks: a heart attack might qualify for both CIC (lump sum) and PHI (monthly benefit) if the recovery period prevents work.
Life insurance pays a lump sum on death. PHI / income protection pays during life if incapacity prevents work. A serious illness policy in the broader sense often combines life cover, CIC and income protection in a single contract, but each component runs on its own definitions.
State benefits as a comparison
For a UK resident unable to work because of illness or injury, the State support is limited. Statutory Sick Pay (SSP) is paid by the employer for up to 28 weeks at a flat rate (116.75 pounds a week from April 2024, subject to annual uprating).
After SSP, the main state benefits are Universal Credit (means-tested, with a limited capability for work element if the person is assessed as unable to work) and "new style" Employment and Support Allowance (contribution-based, for people with sufficient National Insurance record but not in work). Both benefits are subject to a work capability assessment by the DWP and are paid at modest rates that are typically a small fraction of a working income.
PHI / income protection is the main private-sector replacement for working income during long-term incapacity. State benefits are a floor, not a meaningful substitute, for most middle-income earners.
Choosing the right policy structure
Five practical questions drive the policy choice. How much benefit is needed (subtract State benefits and any employer sick pay continuation from take-home income to calculate the gap). What deferred period can be self-funded from savings (longer deferred period = lower premium). What benefit period is needed (full term to selected pension age = traditional PHI; 12 or 24 months per claim = short-term cheaper alternative). What incapacity definition is acceptable (own occupation, suited, any). And whether a group employer-provided scheme already covers part of the need.
Premiums vary significantly with age, occupation (manual workers and high-risk professions are charged more), smoking status, health history, deferred period, benefit period and benefit amount. A 35-year-old non-smoker office worker buying 50 percent benefit with a 13-week deferred period to age 65 typically pays 30 to 80 pounds a month, depending on insurer and underwriting.
Policies are sold through FCA-authorised intermediaries (brokers and IFAs) and direct-to-consumer through insurers. The FCA Insurance Conduct of Business sourcebook (ICOBS) regulates the sale.
How we verified this
The product structure of UK permanent health insurance and income protection reflects FCA Insurance Conduct of Business (ICOBS) rules and the Association of British Insurers' consumer guidance. The tax treatment of individual and group policies reflects sections 325 and 660 of the Income Tax (Earnings and Pensions) Act 2003 and HMRC guidance on group income protection. Statutory Sick Pay rates reflect the current GOV.UK published rates. The state benefits position (Universal Credit, new style ESA) reflects current DWP guidance. No specific insurer names, products, premium quotes or claim ratios have been invented; premium ranges are stated as ranges drawn from published industry guidance.
Disclaimer: This article is general information about UK permanent health insurance and income protection insurance. It is not personal insurance, financial or tax advice. The right product, benefit level, deferred period and incapacity definition for any individual depend on their occupation, health, dependants, savings, employer sick pay continuation, and other protection. A regulated insurance broker or independent financial adviser can match the product to the need.
Frequently asked questions
What is permanent health insurance?
Permanent health insurance (PHI) is the older industry name for income protection insurance: a long-term policy that pays a monthly tax-free benefit if the insured person is unable to work because of illness or injury. "Permanent" refers to the insurer's commitment to keep the policy in force while the premium is paid, not to a guarantee that the benefit pays forever in every case.
Is permanent health insurance the same as income protection?
Yes. They are two names for the same product. The UK industry historically used "permanent health insurance" and "PHI"; the modern consumer term is "income protection insurance" or "IP". Some older policies still use the PHI label.
How much does income protection insurance cost in the UK?
Premiums depend on age, occupation, smoking status, health, the deferred period, the benefit period, the benefit amount and the incapacity definition. A 35-year-old non-smoker office worker buying 50 percent benefit to age 65 with a 13-week deferred period typically pays 30 to 80 pounds a month. Manual workers and high-risk occupations pay more.
Are income protection benefits taxable?
For an individual policy paid from after-tax personal income, benefits are tax-free in the policyholder's hands. For a group income protection scheme paid by the employer, the premium is a tax-exempt benefit in kind and the benefit is paid through PAYE and taxed as employment income.
How is PHI different from critical illness cover?
Critical illness cover pays a single lump sum on diagnosis of a specified illness from the policy's list. PHI pays a monthly income during a period of incapacity. The two cover different risks: a serious illness might trigger both a CIC lump-sum payout and a PHI monthly benefit if recovery prevents work. They are complementary rather than substitutes.
