Inheritance Tax: How Much Will Your Estate Actually Owe?

If you have ever typed “inheritance tax calculator” into a search engine, you are probably not doing it out of idle curiosity. You are likely sitting with a number in your head, a figure that represents everything you have worked for over a lifetime, and wondering how much of it will actually make it to the people you love. That is a very human thing to wonder about, and it deserves a proper answer.

So let us walk through how inheritance tax actually works, how to get a rough sense of what your estate might owe, and what options exist to reduce that bill before it ever becomes a problem.

What Is Inheritance Tax, and Who Actually Pays It?

Inheritance tax is a tax on the estate of someone who has died. The estate includes everything they owned: property, savings, investments, personal possessions, and in some cases gifts made in the years before death.

The important thing to understand straight away is that inheritance tax is not paid by the person who has died. It is paid by the estate itself, usually before any assets are distributed to beneficiaries. So if you are expecting to inherit from a parent or partner, the tax is settled first and you receive what remains.

In the UK, inheritance tax is currently charged at a flat rate of 40% on everything above the tax-free threshold, which is known as the nil rate band.

The Nil Rate Band: Your Starting Point

Every individual in the UK has a nil rate band of £325,000. This means the first £325,000 of an estate is completely free from inheritance tax. Only the value above that threshold is taxed at 40%.

So if someone dies with an estate worth £500,000, the calculation looks roughly like this:

£500,000 minus £325,000 leaves £175,000 taxable. At 40%, that produces an inheritance tax bill of £70,000.

That is a significant sum. And for anyone who owns property in Surrey or London, where house prices have risen substantially over the past two decades, it is a sum that catches many families completely off guard.

The Residence Nil Rate Band: Extra Relief for Family Homes

In 2017 the government introduced an additional allowance specifically for people passing on a family home to direct descendants, meaning children or grandchildren. This is called the residence nil rate band, and it is currently set at £175,000.

This means that a single person who leaves their home to their children could potentially pass on up to £500,000 completely free of inheritance tax: the £325,000 nil rate band plus the £175,000 residence nil rate band.

For a married couple or civil partners, the allowances can be combined. If one spouse dies and leaves everything to the other, no inheritance tax is due at that point. The surviving spouse then inherits both sets of allowances. This means a couple could potentially pass on up to £1,000,000 to their children without a penny of inheritance tax, provided the estate includes a family home and its total value does not significantly exceed that figure.

It is worth knowing, however, that the residence nil rate band tapers away for estates worth more than £2,000,000. For every £2 above that threshold, £1 of the residence nil rate band is lost. Larger estates therefore need more careful planning.

How to Calculate Your Own Inheritance Tax Exposure

There is no single official inheritance tax calculator, but working out a rough figure yourself is not as complicated as it might seem. Here is a straightforward way to approach it.

Start by adding up the total value of everything you own. Include your property at its current market value, all savings and current accounts, ISAs and investments, pension lump sums that sit outside your estate (most modern pensions do, which is worth knowing for now, though this is changing in 2027 — more on that shortly), life insurance policies not written in trust, vehicles, jewellery, art, and any other valuable possessions.

Then subtract any debts. Mortgages, loans, credit card balances, and funeral expenses can all be deducted from the gross estate value.

The figure you are left with is your net estate.

From that net estate, subtract your nil rate band of £325,000. If you are passing your home to children or grandchildren, subtract the residence nil rate band too, up to £175,000. If you are a surviving spouse inheriting unused allowances from a late partner, you may be able to double both figures.

Whatever remains above those thresholds is your taxable estate. Multiply it by 40% and that is your approximate inheritance tax liability.

For example, a widow living in Surrey with a house worth £650,000, savings of £150,000, and investments worth £100,000 has a gross estate of £900,000. With a combined nil rate band of £500,000 available, the taxable estate is £400,000. The inheritance tax bill would be £160,000.

That is a substantial amount of money. It is also not inevitable.

What Has Just Changed: The Latest UK Updates You Need to Know

Inheritance tax has rarely been as active a policy area as it is right now. Several significant changes have either just come into effect or are on the immediate horizon, and they affect a much wider range of people than many realise.

Thresholds frozen until 2031. The nil rate band has been fixed at £325,000 since 2009, and following the Autumn Budget of November 2025, both the nil rate band and the residence nil rate band will remain frozen until April 2031. Westminster Law As property values and investment portfolios continue to grow in the meantime, more and more estates will be pulled into inheritance tax territory without their owners ever feeling particularly wealthy. The Office for Budget Responsibility expects annual inheritance tax receipts to rise from £9 billion in 2025/26 to £14.5 billion by 2030/31 Apexaccountants — a striking figure that illustrates just how many more families will be affected over the coming years.

Business and agricultural relief tightened from April 2026. This is one of the most significant changes in a generation for business owners and farmers. Previously, qualifying business and agricultural assets could be passed on entirely free of inheritance tax. From 6 April 2026, individuals will be subject to a cap on the combined value of assets eligible for agricultural property relief and business property relief. Assets within the allowance continue to benefit from 100% relief, but assets exceeding the threshold will only qualify for relief at 50%. RSM UK Following industry feedback, the cap was increased to £2.5 million per individual, and any unused portion of that allowance will be transferable between spouses or civil partners. RSM UK This means a married couple could shelter up to £5 million of qualifying business or agricultural assets from inheritance tax. For estates above that level, however, careful planning has become essential and urgent. This is one of the most significant changes in a generation for business owners and farmers. Previously, qualifying business and agricultural assets could be passed on entirely free of inheritance tax. From 6 April 2026, individuals will be subject to a cap on the combined value of assets eligible for agricultural property relief and business property relief. Assets within the allowance continue to benefit from 100% relief, but assets exceeding the threshold will only qualify for relief at 50%. RSM UK Following industry feedback, the cap was increased to £2.5 million per individual, and any unused portion of that allowance will be transferable between spouses or civil partners. RSM UK This means a married couple could shelter up to £5 million of qualifying business or agricultural assets from inheritance tax. For estates above that level, however, careful planning has become essential and urgent.

Pensions will enter the inheritance tax net from April 2027. This is the change that surprises people most. For decades, defined contribution pensions have sat outside a person’s estate for inheritance tax purposes, making them one of the most powerful wealth transfer tools available. From April 2027, unused pension funds and death benefits payable from a pension will be brought into a person’s estate for inheritance tax purposes. Office for Budget Responsibility This does not mean pensions become a bad vehicle for retirement saving — they remain highly tax-efficient during your lifetime. But it does mean the estate planning calculation around them changes significantly, and anyone who has deliberately preserved their pension as a legacy for their children needs to revisit that strategy now. This is the change that surprises people most. For decades, defined contribution pensions have sat outside a person’s estate for inheritance tax purposes, making them one of the most powerful wealth transfer tools available. From April 2027, unused pension funds and death benefits payable from a pension will be brought into a person’s estate for inheritance tax purposes. Office for Budget Responsibility This does not mean pensions become a bad vehicle for retirement saving — they remain highly tax-efficient during your lifetime. But it does mean the estate planning calculation around them changes significantly, and anyone who has deliberately preserved their pension as a legacy for their children needs to revisit that strategy now.

The charitable exemption has been narrowed. A smaller but important change: the inheritance tax exemption for charitable gifts made on death has been narrowed. Gifts left to trusts for charitable purposes will no longer qualify for the exemption unless the trust meets a broader definition of charity, including specific requirements for jurisdiction, registration, and management. Baker McKenzie If charitable giving forms part of your estate plan, it is worth reviewing the structure of those arrangements with an advisor.

Taken together, these changes represent the most consequential shift in inheritance tax policy in many years. The window for acting ahead of the April 2026 and April 2027 changes is narrowing, and the value of doing so is considerable.

Seven Ways to Legally Reduce an Inheritance Tax Bill

This is where good financial planning makes a real difference, and where speaking to a qualified advisor pays for itself many times over.

Gifts made during your lifetime. You can give away up to £3,000 per year completely free of inheritance tax. This is called the annual exemption. You can also give unlimited gifts to individuals, but if you die within seven years of making the gift, it may still be counted as part of your estate on a sliding scale. After seven years it falls outside your estate entirely.

Gifts from surplus income. If you can demonstrate that you regularly give money away from your income rather than your capital, and that doing so does not affect your standard of living, those gifts can be immediately exempt from inheritance tax. This is a valuable and underused relief.

Spousal and civil partner exemptions. Transfers between spouses and civil partners are entirely free of inheritance tax, both during life and on death. Leaving assets to a spouse first is often a sensible strategy, though it requires proper planning to ensure the full benefit is not lost on second death.

Charitable giving. Any amount left to a registered charity is free of inheritance tax. Better still, if you leave at least 10% of your net estate to charity, the inheritance tax rate on the remainder drops from 40% to 36%. Given the recent narrowing of the charitable exemption for certain trust structures, it is more important than ever to ensure your giving arrangements are correctly set up.

Pension planning — act before 2027. As noted above, pensions are currently one of the most effective estate planning tools available. Making the most of pension contributions now, before the April 2027 changes take effect, is a sensible step for anyone with meaningful pension savings they had hoped to pass on. As noted above, pensions are currently one of the most effective estate planning tools available. Making the most of pension contributions now, before the April 2027 changes take effect, is a sensible step for anyone with meaningful pension savings they had hoped to pass on.

Life insurance written in trust. A life insurance policy written in trust pays out directly to your beneficiaries and does not form part of your estate. This means no inheritance tax on the payout and no waiting for probate. It is a practical way to ensure your family has immediate access to funds when they need them most.

Business and agricultural relief — review now. If you own a business or qualifying farmland, the changes coming in April 2026 make a review essential. The new £2.5 million per person allowance is transferable between spouses, which creates meaningful planning opportunities for couples. But for larger business estates, a clear strategy for the assets above that threshold needs to be in place before the deadline arrives.

The Seven Year Rule Explained Simply

The seven year rule comes up frequently in conversations about inheritance tax, and it is worth understanding clearly.

If you make a gift to another individual (not to a spouse or a charity), it is known as a potentially exempt transfer. If you survive for seven years after making that gift, it leaves your estate completely and no inheritance tax is due on it.

If you die within seven years, the gift may be brought back into your estate. However, the amount of tax due reduces over time on a sliding scale called taper relief. Gifts made between three and four years before death are taxed at 32% rather than 40%. Between four and five years it is 24%. Between five and six years it is 16%. Between six and seven years it is 8%. After seven years it is zero.

The key takeaway is that the sooner you begin planning, the more options are available to you. Given the scale of the changes currently working their way through UK tax law, that has never been more true.

Why So Many Families Are Caught Out

Inheritance tax was originally designed to affect only the wealthiest estates. For much of the twentieth century, that was largely true. But the nil rate band has been frozen at £325,000 since 2009, while property values across London and the South East have risen dramatically in the same period.

Many ordinary families who would never have considered themselves wealthy enough to worry about inheritance tax now find themselves facing substantial bills simply because the home they bought decades ago has appreciated significantly in value. With the threshold now confirmed as frozen all the way to 2031, and with the pension changes arriving in 2027, the number of estates affected will continue to grow year on year.

It is not a problem reserved for the exceptionally wealthy. It is increasingly a reality for middle-income homeowners, and it responds well to early, thoughtful planning.

When to Speak to a Financial Advisor

If your estate is likely to exceed £325,000, or if you own business assets, a pension you had planned to leave to your children, or farmland, it is worth having a conversation sooner rather than later. The changes arriving in April 2026 and April 2027 are real deadlines, not distant possibilities, and the most effective planning strategies take time to put in place properly.

At Capel Alley Wealth Management we work with individuals and families across Surrey and London who want to understand their inheritance tax position clearly and take sensible steps to protect what they have built. Our initial meeting is at our cost and comes with no obligation. We will talk you through your situation honestly, explain what the new rules mean for your estate specifically, and help you decide whether and how to act.

Your estate represents a lifetime of work. Getting the right advice now means more of it reaches the people you care about most.

Capel Alley Wealth Management is authorised and regulated by the Financial Conduct Authority. Estate and inheritance tax planning is not regulated by the Financial Conduct Authority. This article is for informational purposes only and does not constitute personal financial advice. Tax rules are subject to change and their effects depend on individual circumstances.