Inheritance Tax Calculator

Free UK inheritance tax calculator. Estimate IHT on your estate with nil-rate band, RNRB, spouse exemption, charity rate, taper relief on gifts, and transferable allowances. Updated for 2025-26.

£

Included in estate total, for RNRB calculation

£
£

Qualifies for Residence Nil-Rate Band (RNRB)

Exempt from IHT. ≥10% of baseline = 36% rate

£

100% relief on qualifying assets

Enter amount and how many years ago

Inheritance Tax Payable
£0
0.0%effective rate
No IHT Due
£490,000
Beneficiaries · 490K
£0
IHT
Estate 100%
IHT Rate
40%
standard rate
Tax-Free Threshold
£500K
NRB + RNRB
Effective Rate
0.0%
of gross estate

Allowances & Thresholds

How your tax-free threshold is calculated

AllowanceAmount
Nil-Rate Band (NRB)£325,000
Residence NRB (RNRB)£175,000
Threshold for Estate£500,000

Estate Breakdown

Step-by-step calculation from gross estate to IHT payable

ItemAmount
Gross Estate£500,000
Less: Debts & Funeral Costs£10,000
Net Estate£490,000
Tax-Free Threshold£500,000
Taxable Estate£0
IHT at 40%£0

What Is Inheritance Tax?

UK tax on the estate of someone who has died — charged at 40% above the tax-free threshold

Inheritance Tax (IHT) is charged on the total value of someone's estate — including property, savings, investments, and possessions — when they die. Only the portion above the tax-free threshold is taxed.

Standard Rate

40%

On everything above the nil-rate band

Charity Rate

36%

If ≥10% of baseline left to charity

Did you know? Only around 4% of UK deaths result in an IHT charge. However, rising property prices are pulling more estates above the threshold each year — HMRC collected a record £7.5 billion in IHT in 2023-24.

Nil-Rate Band & Residence Nil-Rate Band

The two tax-free allowances that determine your IHT threshold — up to £500,000 per person

Nil-Rate Band (NRB)

£325,000

Basic tax-free allowance. Frozen since 2009, expected to remain until April 2028. Everyone gets this regardless of circumstances.

Residence NRB (RNRB)

£175,000

Additional allowance if your main home is left to direct descendants (children, grandchildren, step-children).

Combined Thresholds:

Single: £325K + £175K = £500,000
Couple: £650K + £350K = £1,000,000

RNRB Taper: For estates over £2,000,000, the RNRB reduces by £1 for every £2 above this threshold. It is completely lost at £2,350,000 (single) or £2,700,000 (with transferred RNRB from a spouse).

Gifts & the 7-Year Rule

How gifts are taxed with taper relief, plus annual exemptions you can use each year

Gifts made more than 7 years before death are completely exempt. Gifts within 7 years are "potentially exempt transfers" (PETs) — if they exceed the nil-rate band, taper relief reduces the tax owed depending on when the gift was made.

Years Before DeathTaper ReliefEffective IHT Rate
0 – 3 years0%40%
3 – 4 years20%32%
4 – 5 years40%24%
5 – 6 years60%16%
6 – 7 years80%8%
7+ years100%0% (exempt)

£3,000

Annual Exemption

Per person, per tax year

£250

Small Gift Limit

Per recipient, per year

£5,000

Wedding Gift

From a parent (£2.5K grandparent)

Spouse Exemption & Transferable Allowances

Unlimited spouse exemption and how unused allowances transfer between married couples

Spouse Exemption

Unlimited

Assets left to a spouse or civil partner who is a long-term UK resident are completely exempt from IHT. No upper limit applies.

Transferable Bands

Up to £1,000,000

Unused NRB and RNRB from a deceased spouse can be transferred — potentially doubling the threshold.

36% Charity Rate

If at least 10% of the baseline amount is left to charity, the IHT rate drops from 40% to 36%. This 4% saving can mean leaving more to charity actually costs beneficiaries less than paying the full 40% tax.

Baseline = Net Estate − NRB (after gifts) − Spouse Exemption − Reliefs
If Charity ≥ 10% × Baseline → IHT rate = 36% instead of 40%

Business Property Relief (BPR)

50% or 100% relief on qualifying business assets — one of the most powerful IHT planning tools

100% Relief
  • Sole trader businesses
  • Partnership interests
  • Unquoted company shares
  • AIM-listed shares (held 2+ years)
50% Relief
  • Controlling interest in a quoted company
  • Land/buildings used by a partnership
  • Machinery used in the business

From April 2026: BPR and Agricultural Property Relief will have a combined allowance of £2.5 million at 100% relief, with 50% relief on the value above £2.5 million. AIM shares will receive 50% relief only.

Common Mistakes to Avoid

Errors that frequently lead to overpaying IHT or unexpected tax bills for beneficiaries

Forgetting life insurance payouts not held in trust — these form part of the taxable estate

Not claiming the transferred NRB/RNRB from a deceased spouse — this can double the threshold to £1M

Assuming the RNRB always applies — it tapers for estates over £2M and requires the home to go to direct descendants

Not accounting for gifts within 7 years — these are added back to the estate for IHT purposes

Overlooking the 36% charity rate — leaving 10% to charity can sometimes save beneficiaries money

Forgetting joint assets — the deceased's share of jointly-owned property is included in their estate

Frequently Asked Questions

Common questions and detailed answers

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Last updated Mar 21, 2026