Adding your family to your employer's health scheme costs you tax

If your employer pays for private medical cover for your partner or children, that premium counts as your income for tax purposes. This explains what HMRC says, what changes from April 2027, and what to ask HR before you add anyone.

Adding your family to the scheme has a tax cost

Private medical cover through an employer is rarely a pure extra. HMRC treats it as a benefit in kind, a non-cash perk that counts as part of your taxable income.

Your family's cover is taxed as yours

When your employer extends the scheme to cover your partner or children as well as you, the premium paid for those family members is added to your own benefit in kind. It is not treated as a separate charge against them, and it does not depend on how much any one person actually uses the cover. HMRC's Employment Income Manual sets this out at EIM21762 (read 2 October 2026).

Why this is worth knowing before you say yes

It means the decision to add your family is really a decision about your own tax position. The cover itself may be worth having, but it is worth going in understanding that the cost lands on your payslip, through you, whoever in the household ends up seeing a doctor.

How is the taxable value of your family's cover worked out?

The amount that ends up against your name as a taxable benefit isn't the premium you'd see if you went out and bought the same cover yourself. GOV.UK states that the taxable value of employer-paid medical insurance is the cost to the employer of providing it, read 2 October 2026. In other words, HMRC looks at what your employer actually pays to cover you and your family.

What this means for your P11D

Your employer records this figure on your P11D, the form used to tell HMRC about benefits in kind for the tax year. The number against your family's medical cover is drawn from the employer's own cost of providing it, so two people on the same scheme with different family sizes can show different figures, and the figure can differ from any premium you might see quoted for similar cover bought privately.

If you want to understand how employer schemes are structured more broadly, CorporateHealthInsurance.uk sets out how these arrangements work beyond the tax treatment.

The payrolling change

How the tax on family cover reaches you

Adding your family to your employer's health scheme does not change what lands in your bank account straight away. It changes what HMRC asks your employer to report about you, and when.

  1. Your family's premium is treated as a benefit in kind

    Once your employer pays towards cover for your partner or children, the value of what they've paid on your behalf counts as part of your income for tax purposes. HMRC calls this a benefit in kind, and it sits alongside things like a company car or private fuel.

  2. Today, that charge is settled after the tax year ends

    For most employer schemes right now, the benefit is reported once the tax year finishes. Your tax code is adjusted, or you settle the difference through self-assessment, sometimes months after your family was actually covered.

  3. From 6 April 2027, it moves onto each payslip

    HMRC has announced that employer-provided medical benefit will be reported through payroll each pay period from 6 April 2027, rather than left to year-end reporting (HMRC policy paper, read 2 October 2026). In practice, that means the tax on your family's cover becomes a recurring line you can see as it happens.

    This is a change HMRC has announced, so how it lands on your own payslip is worth confirming with your employer nearer the date.

    Before 6 April 2027

    The benefit is reported after the year ends, through a change to your tax code or self-assessment.

    From 6 April 2027

    The benefit is reported through payroll each pay period, showing on your payslip as it happens.

Tax rules can move between now and April 2027. Check the current position with HMRC or your employer before relying on any of this for your own payslip.

What to ask HR before you add your family

Before your family is added to an employer medical scheme, there are three things worth asking HR directly, because the answers change what the cover actually costs you and when you will see that cost.

What premium figure has HR used to value the benefit?

The taxable benefit in kind is based on what the cover costs your employer to provide. HR or the scheme provider should be able to tell you that figure for your family members specifically, since it is the number that eventually reaches your tax return or your payslip.

Does the employer pay National Insurance on top of the premium?

Employers pay Class 1A National Insurance on benefits such as medical insurance (GOV.UK, read 4 October 2026). That charge falls on the employer, but it is worth asking HR how the scheme is structured, because an employer absorbing that cost may price or design family cover differently.

How will the benefit show up once payrolling begins?

Ask whether your employer already reports medical benefits through payroll or still does so after the tax year ends. HMRC has set out a move toward reporting these benefits through payroll, which would bring the tax on your family's cover onto your payslip. Whether and when that applies to your scheme is a question for HR.

  • The premium figure used to value your family's cover
  • Whether Class 1A National Insurance is paid by the employer on that premium
  • Whether the benefit is reported through payroll now or only at year-end

Where you want to understand how employer schemes are put together in the first place, CorporateHealthInsurance.uk sets that out. Where HR cannot answer one of these questions, that is itself worth noting before you decide to add your family.

Questions about family cover through your employer

Can you say no to family cover if your employer's scheme includes it automatically?

Many employer schemes cover the employee as standard and treat family members as something you add separately, so there is often nothing to opt out of until you ask for it. Where a scheme does enrol dependants by default, ask your HR or benefits team whether you can decline cover for them. Doing so matters because the benefit in kind charge under HMRC's Employment Income Manual (EIM21762) applies to the cover you actually receive, so family members who are not covered are not part of your tax charge.

What happens to the tax if you leave the company partway through the tax year?

The benefit in kind is normally worked out for the period your family was actually covered, so leaving partway through should mean the figure reported is apportioned to that period. The exact calculation and how it appears on your P45 or P60 is set by your employer's payroll process, so it is worth asking payroll directly how they handle a mid-year leaver. Where the amount still looks wrong once you have left, HMRC or a qualified tax adviser can check it against what was actually reported.

How do you find out whether your employer's scheme already includes your family, or just you?

Default employer medical cover is often for the employee alone, with family members added as a separate step. The clearest way to check is to ask HR or your benefits team directly, since the scheme booklet or intranet page will say whether dependants are already part of the cover and at what level. If your family is already included, that should show up as a benefit in kind value on your P11D or payslip, which is a useful second check alongside asking HR.

Is there a National Insurance cost as well as the income tax on family cover?

Class 1A National Insurance on a medical benefit is paid by the employer, so it does not add to the tax you see on your own payslip or P11D. What you are taxed on is the value of the cover itself, as set out in HMRC's Employment Income Manual (EIM21762). It is still worth asking HR to confirm this is how your scheme is set up, since the way a benefit is structured can vary between employers.

Once you know the tax cost, the next question is what your family actually needs

Adding your family to a scheme is also a decision about cover level for each person.