Inheritance Tax on Property: How It Applies to Your Home & Rentals

Property is usually the single largest asset in a UK estate, which makes it central to most Inheritance Tax (IHT) calculations. Here’s how the rules apply to a main home, and how they differ for rental and second properties.

Property is part of the taxable estate

There’s a common misconception that a main home is automatically exempt from Inheritance Tax. It isn’t. The value of your home forms part of your estate just like savings, investments, and other possessions, and is added up alongside everything else to work out if, and how much, Inheritance Tax is due. Rising house prices mean more families now have to pay Inheritance Tax on an estate built mainly around a home than would have been the case when the current nil-rate band was set. Any outstanding mortgage or other debt secured against the property is deducted first, so it’s the net equity, not the gross value, that counts towards the estate.

Pensions are treated differently. Most pension pots sit outside the estate for Inheritance Tax purposes, which is why property so often ends up as the largest taxable asset even in estates with substantial retirement savings.

What changes the outcome for a main home is the residence nil-rate band, a tax allowance specifically built around housing, on top of the general Inheritance Tax allowance every estate already gets.

The residence nil-rate band (RNRB)

On top of the standard £325,000 nil-rate band, an extra £175,000 allowance is available when a main residence (or its sale proceeds) is left to direct descendants, children, stepchildren, adopted children, or grandchildren, as set out in GOV.UK’s guidance on passing on a home.

Combined, this gives:

This combined figure, whether reached through marriage or civil partnership, is often what people mean when they ask about the inheritance tax threshold for a couple leaving a family home to their children.

The RNRB tapers away for larger estates. It reduces by £1 for every £2 the value of your estate exceeds £2 million, and disappears entirely once the estate is worth around £2.35 million (for one person). This taper is a common trap for estates that look comfortably under the general nil-rate band thresholds but are pushed over £2 million once property values are added in.

Importantly, the RNRB only applies to a property that was lived in as a residence at some point, it does not apply to a buy-to-let that was never the deceased’s home.

Both the standard nil-rate band and the RNRB can be transferred between spouses or civil partners. Any unused allowance from a first death carries over to the surviving spouse or civil partner’s estate, which is how a married couple can reach the combined £1 million threshold. Transfers between spouses and civil partners are also exempt from Inheritance Tax in their own right, regardless of value, so a property left entirely to a surviving spouse doesn’t trigger a tax charge at that point, the allowances simply carry forward to be used later.

A worked example

Say a single person’s estate, including their home, is worth £600,000 and everything passes to their children. The standard nil-rate band covers the first £325,000 tax-free, and the residence nil-rate band covers a further £175,000, leaving £500,000 of the estate free of Inheritance Tax. Tax at the standard 40% rate is then charged on the remaining £100,000, giving a tax bill of £40,000.

If the same estate had instead passed to a spouse or civil partner, no tax would be due at that point, thanks to the spouse exemption, and both the nil-rate band and the residence nil-rate band would carry forward unused to the survivor’s own estate.

Rental and second properties

A second home or rental property is included in the estate at its full market value and taxed in exactly the same way as any other asset, at the standard Inheritance Tax rate of 40% above the available nil-rate band(s). There’s no reduced inheritance tax rate for a rental property simply because it’s let out rather than lived in. There’s no residence nil-rate band relief for it, and no special Inheritance Tax exemption simply because it’s a rental business. Both the nil-rate band and the residence nil-rate band have been frozen at their current levels for several tax years running, which means rising property values alone can pull more estates into an Inheritance Tax charge even without any change in the tax rates themselves.

Landlords with a portfolio should be aware that property values, especially across several properties, can push an estate well above the combined nil-rate bands even where cash and savings are modest. This is a common reason landlords look at estate and succession planning earlier than other people would. Our guidance for landlords covers the wider tax picture, including how Capital Gains Tax on inherited property interacts with property held during someone’s lifetime.

When the estate can’t pay without selling

Inheritance Tax is normally due before probate is granted, which can be a problem when most of an estate’s value is tied up in a house that hasn’t yet been sold. HMRC allows the tax attributable to property (and some other qualifying assets) to be paid in instalments over up to 10 years, rather than as one lump sum upfront.

Key points on the instalment option:

• Interest is charged on the outstanding balance
• If the property is sold before the instalments finish, the remaining tax becomes due immediately in full
• It applies to the property itself, other assets in the estate may still need tax paid upfront

This can ease the immediate cash-flow problem, but it doesn’t reduce the total bill, and it needs to be arranged correctly with HMRC as part of the estate’s Inheritance Tax return. The executor, or the administrator if there’s no will, is responsible for electing the instalment option on the return and keeping HMRC updated if the property is sold before the instalments are paid off. Beneficiaries don’t deal with HMRC directly on this, the executor handles it on behalf of the estate.

Getting the figures right

Property valuations, the residence nil-rate band taper, and the split between a main home and rental assets all affect the final Inheritance Tax bill differently, and the tax rates and inheritance tax allowance figures involved rarely apply in isolation once a mix of assets is involved. Our free Inheritance Tax calculator gives a starting estimate, but where property forms a large part of an estate, it’s worth having the calculation checked properly before probate is applied for.