Inheritance Tax Planning: How Does Inheritance Tax Work in the UK?

Inheritance tax can feel confusing, but it’s simpler than it seems. It’s a tax that’s paid when someone passes away, and their money, property, or belongings are passed to others. Not everyone has to pay IHT—only if the value of an estate is above a certain limit set by the government. Why does it even exist? The goal is to tax wealth being handed down. But with the right planning, you can lower the tax due, or sometimes avoid it altogether.

What is Inheritance Tax and Who Pays It?

Inheritance tax is a tax on what someone leaves behind when they die. This includes things like money, houses, or other valuables. If the estate on death is worth less than £325,000, it’s exempt from IHT. But if the estate worth is more than that, the extra part is taxed at 40%. Sounds like a lot, right? That’s why many people use plans to lower the tax, like giving exempt gifts, donating to charity, or leaving everything to a surviving spouse or civil partner, which is exempt from IHT.

How Inheritance Tax is Calculated?

First, the person’s total estate is added up. This includes their home (if it was their main residence), bank accounts, belongings, and anything else of value. Then, debts are taken away. What’s left is the value of an estate. If it’s under £325,000, there’s no tax due. If it’s over, that extra part is taxed at 40%. The tax-free threshold, also known as the “nil rate band,” is the first £325,000 of an estate. And in some cases, there’s another £175,000 if the main residence is passed to a direct descendant, like a child or grandchild.

How Much is Inheritance Tax?

Total value of estate	IHT payable if full residence nil rate band of £175,000 claimed	IHT payable if no residence nil rate band applicable
£325,000	None	None
£400,000	None	£30,000
£500,000	None	£70,000
£600,000	£40,000	£110,000
£800,000	£120,000	£190,000
£1m	£200,000	£270,000

The Administration of Inheritance Tax

Sorting out inheritance tax takes steps. The executor (or administrator) first works out the full value of the estate. That includes money, belongings, and property. Debts are subtracted. Then, it’s clear if the estate goes over the tax-free threshold. If inheritance tax needs to be paid, it’s taken from the estate before anything is handed out to family or others. Executors may also work with audit services to ensure all calculations and payments comply with regulations. You must pay IHT within six months of the person’s death. Miss the deadline? Interest gets added. Sometimes, if there’s not enough cash in the estate, you can set up a plan with HMRC or pay in instalments, especially if the estate includes a house.

What is the Inheritance Tax Threshold?

The inheritance tax threshold (also called the nil rate band) is how much you can leave behind before any tax is owed. Right now, it’s £325,000. If you pass your main residence to a direct descendant, you can claim the residence nil rate band, which adds another £175,000. That means up to £500,000 could be tax-free. For couples, the allowance can be combined, doubling it to £1 million.

Exemptions and Reliefs That Can Reduce Inheritance Tax

Let’s look at ways to reduce or avoid paying IHT:

1. Transfers to a Spouse or Civil Partner Anything you leave to your civil partner or spouse is exempt from IHT. You can pass everything to them without a tax bill.
2. Charity Donations Leave money to a charity? That part won’t be taxed. And if you give 10% or more, the tax rate on the rest may drop from 40% to 36%.
3. Business and Agricultural Relief Run a farm or a business? You might not need to pay IHT on all of it. Parts of those assets could be exempt from IHT, depending on how they’re used.
4. Gifts within Annual Exemptions You can give up to £3,000 each year without tax. These are called exempt gifts. Give smart, give early.

How Gifts Work with Inheritance Tax

Gifts made during your lifetime can reduce tax, but timing matters. If you gave a large gift in the last seven years, it may still count toward your estate. The closer the gift was to death, the more likely it is to be taxed. But don’t worry—not all gifts are taxed. Birthday money? Wedding presents under certain limits? These are often exempt gifts. Giving early can help your loved ones and shrink your estate worth.

Using Trusts in Inheritance Tax Planning

Trusts can be helpful, but they need care. A trust is like a box where you place assets, such as money or property. Once inside, the assets may no longer count as part of your estate. That means they might not face IHT. But not all trusts avoid taxes. Some may still be taxed based on how they’re set up and used. Used right, a trust can protect family wealth and reduce the tax due.

Paying Inheritance Tax: When and How?

Inheritance tax must be paid after death, but when? It’s due six months after the end of the tax year in which the person died. For example, if someone died in 2024, the tax needs to be paid by October 2025. If you miss the deadline, interest starts building. Usually, the executor handles it. But if there’s no will, others may need to step in. You can even spread payments over time, especially if the estate includes a home.

Common Mistakes in Inheritance Tax Planning

Don’t wait too long. Here are mistakes that cost people money:

• No Will Without a will, the law decides who gets what. It may not be what you wanted.
• Leaving Property to Non-Exempt People If your estate goes to someone who isn’t a civil partner, spouse, or charity, they may need to pay IHT.
• Not Using Allowances If you ignore the tax-free threshold or the residence nil rate band, your family could lose out.
• Forgetting About Life Insurance That payout adds to your estate. It could push you over the tax limit unless placed in trust.
• Ignoring Shared Assets Shared assets may still count toward the value of an estate. Be careful.

Top Tips for Minimising Inheritance Tax

Planning ahead is important when it comes to managing your estate and reducing inheritance tax. Here are a few simple steps to consider:

• Gift early. Give away money while you’re alive. Use the exempt gifts rule to reduce your estate’s value.
• Use Trusts. Trusts can lower your taxable estate and help younger family members in the future.
• Leave to Charity. Donations don’t just help others—they lower your IHT bill.
• Think About Pensions and ISAs. Pensions are usually outside your estate. That’s a smart way to pass on money.
• Review Your Plan Often. Tax rules change. Your life changes. Talk to a financial adviser regularly.

FAQs

How does inheritance tax apply to property or assets held abroad?

If you lived in the UK when you died, the UK will likely tax your estate on death, even if it includes overseas assets. You might also owe tax in another country, but tax treaties can sometimes stop you from being taxed twice.

Are digital assets (like cryptocurrency or online businesses) subject to inheritance tax?

Yes. Whether it’s Bitcoin or an online shop, if it has value, it counts. It adds to your estate worth and may increase the tax due.

What happens if inheritance tax isn’t paid on time?

You have six months from the end of the tax year when the person died to pay. If they died in 2024, the tax must be paid by October 2025. If you miss it, interest adds up fast.