Understand health insurance tax relief and reduce what you pay

Health insurance tax relief refers to the tax savings available when paying for private medical insurance in the UK. The relief you can access depends entirely on whether you are paying personally, receiving cover from an employer, or providing it as a business.

For individuals paying their own premiums, there is no tax relief available. HMRC does not allow personal income tax deductions for private medical insurance. You pay premiums from income that has already been taxed, with no way to reclaim any of that tax.

Businesses have a different position. Companies providing health insurance for employees can deduct the premiums as an allowable business expense, reducing their Corporation Tax bill. At the main rate of 25%, every £1,000 spent on employee health insurance saves £250 in Corporation Tax.

Employees who receive health insurance from their employer do benefit from the arrangement, but they also face a tax charge. HMRC treats employer-paid health cover as a benefit in kind, meaning income tax is due on the premium value. Despite this, the arrangement is still more tax-efficient than buying cover privately in most cases.

The answer depends on who is paying and how the policy is structured. Here is the position for each group.

Individuals and employees

If you buy private health insurance yourself, you cannot claim tax relief on the premiums. HMRC treats personal health cover as a private expense, not a deductible one. This applies whether you are employed, retired, or not working. There is no equivalent of pension tax relief for health insurance in the UK.

Employers and limited companies

Businesses can claim Corporation Tax relief on premiums paid for employees. The full cost of the premiums counts as an allowable business expense, reducing taxable profits. At the 25% main Corporation Tax rate, a company paying £10,000 in annual health insurance premiums saves £2,500 in tax. The employer National Insurance cost (Class 1A at 15%) is also deductible.

Self-employed and sole traders

Sole traders and self-employed individuals generally cannot claim personal health insurance as a business expense. HMRC applies the \"wholly and exclusively for business\" test, and private medical cover is treated as providing personal benefit regardless of your work. Limited exceptions exist for genuinely work-specific cover, such as mandatory overseas health requirements or occupational injury insurance.

Directors of limited companies

If you run your own limited company, you can arrange for the company to pay your health insurance premium. The company claims Corporation Tax relief on the cost, and you pay benefit in kind tax on the premium value through your tax code. This is typically more tax-efficient than paying from personal income.

Employer-paid private medical insurance is classified as a benefit in kind (BIK) by HMRC. This means you pay income tax on the premium value at your marginal rate. You do not pay National Insurance on the benefit. The tax is typically collected through an adjustment to your PAYE tax code, spreading the cost across your monthly pay.

A benefit in kind is any non-cash perk your employer provides that has a monetary value. For health insurance, the taxable amount is the premium your employer pays on your behalf. If your employer covers your family as well, the full family premium forms the taxable benefit.

If you contribute towards the premium directly, that contribution reduces the taxable benefit pound for pound. Insurance Premium Tax (IPT), currently at 12%, is already included in the premium the insurer charges, so it is not an additional cost for the employee.

Premiums rise with age because older people are statistically more likely to claim. A 35-year-old might have a premium of around £600, while a 55-year-old on comparable cover could see £1,400, and a 65-year-old £2,200 or more. Older employees are also more likely to be higher-rate taxpayers at the peak of their careers, which means a larger premium taxed at 40% rather than 20% can add several hundred pounds to the annual bill.

Despite the tax, employer-provided health insurance represents strong value. A higher-rate taxpayer on a £1,200 policy pays £480 a year in tax, which works out at around £40 a month for cover that could fund thousands of pounds of private treatment.

Companies providing health insurance for employees can claim the full cost of premiums against Corporation Tax. The premiums are treated as an allowable business expense, reducing taxable profits. This applies whether you cover employees, directors, or both.

At the main Corporation Tax rate of 25% (for profits over £250,000), every £1,000 of health insurance premiums saves £250 in tax. At the small profits rate of 19% (for profits up to £50,000), the saving is £190 per £1,000.

Against this saving, employers must pay Class 1A National Insurance on the benefit value. The Class 1A rate is 15% from 6 April 2025. So a £1,200 premium generates £180 of Class 1A NIC for the employer. This NIC cost is itself deductible against Corporation Tax.

Not every employer-provided health benefit triggers a tax charge. Several health-related perks are genuinely tax-free, which can be a useful way for employers to support staff without adding to their tax bill.

Usually tax-free

• Eye tests and corrective glasses: required for employees using computer screens (VDU users), under health and safety rules
• Annual health checks: one medical screening per employee per year
• Employee Assistance Programmes: offering counselling and mental health support
• Return-to-work treatment: medical treatment up to £500 per tax year to help an employee return to work after 28 or more consecutive days of absence
• Occupational health services: provided specifically for work-related purposes
• Trivial benefits: under £50, provided they are not cash or a cash voucher

Taxable as a benefit in kind

• Private medical insurance premiums: always taxable when employer-paid
• Dental and optical insurance: taxable when provided as a general perk
• Health cash plans: taxable in most cases when employer-funded
• Gym memberships: taxable when paid for by the employer

Employers looking to provide health support without adding to the employee tax burden can combine tax-exempt benefits with a core private medical insurance policy to create a well-rounded package.

Employer-provided health insurance must be reported to HMRC. The reporting method is changing significantly, so it is worth understanding both the traditional system and the new requirements.

P11D reporting (traditional method)

Traditionally, employers report each employee\u2019s benefits on a form P11D after the tax year ends. Health insurance is shown in Section I (medical benefits). A separate P11D(b) form declares the total Class 1A National Insurance due. The deadline for filing is 6 July following the tax year, and Class 1A NIC must be paid by 22 July (electronic) or 19 July (post).

Mandatory payrolling from April 2026

From 6 April 2026, most employers must payroll benefits in kind, reporting and taxing them in real time through PAYE each pay period rather than once a year on a P11D. For payrolled benefits, the P11D form is no longer required. Class 1A National Insurance continues to apply.

For employees, this means the tax on health cover is spread across payslips through the year, instead of arriving as a tax-code adjustment later. For employers, it means ensuring payroll software can handle benefits before the deadline.

What employers need to do

• Check that payroll software supports benefits in kind
• Register to payroll benefits with HMRC before the start of the 2026/27 tax year
• Inform employees how the change affects their take-home pay
• Keep records of all premium payments, policy documents, and employee contributions for at least six years

For most employees and company directors, having the company pay for health insurance is more tax-efficient than buying it personally. The Corporation Tax saving typically outweighs the additional income tax and National Insurance costs.

When you pay personally, you fund the full premium from income that has already been taxed. There is no relief to offset the cost. When the company pays, it saves Corporation Tax on the premium, and you only pay income tax on the benefit value at your marginal rate.

A salary sacrifice arrangement does not remove the tax on health insurance. Since April 2017, health insurance has been caught by the Optional Remuneration Arrangements (OpRA) rules. Under OpRA, the taxable value is the higher of the salary given up or the normal benefit value. In practice, salary sacrifice does not reduce the income tax on private medical insurance, unlike genuinely exempt arrangements such as pension contributions or cycle-to-work schemes.

For impartial help weighing up the costs, MoneyHelper (0800 138 7777) offers free guidance on financial decisions including health insurance.