Knowledge Base Article

IHT Reliefs and Exemptions Claims Guide

How to think about exemptions and reliefs carefully, and what evidence should exist before a claim is relied on.

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Reliefs and exemptions reduce tax, but only if the facts support them

Inheritance-tax reliefs and exemptions are important, but they should never be treated as optimistic assumptions pasted onto the return at the end.

The safer approach is to ask:

  • which relief or exemption is actually being considered?
  • what facts need to be true for it to apply?
  • what document or evidence supports those facts?

That turns the tax position from a hope into a reasoned claim.

The common categories people look at

Depending on the estate, executors may need to review issues such as:

  • spouse or civil-partner exemption
  • charity exemption
  • business or agricultural relief
  • gifts and other lifetime-transfer treatment
  • nil-rate band related claims

These categories are not interchangeable. Each one depends on its own facts and supporting record.

Agricultural and Business Relief changed in April 2026

For deaths on or after 6 April 2026, the combined value of qualifying agricultural and business property that can receive 100% relief is generally limited to £2.5 million.

Qualifying value above the available allowance generally receives 50% relief. Any unused allowance from a spouse or civil partner may also be transferable, subject to the claim conditions and deadlines.

This is a specialist area. The result depends on the date of death, the type and ownership of the property, lifetime transfers, trusts, and whether a transferred allowance is available. Estates containing farms, businesses, unlisted shares, or significant relief claims should not rely on an older assumption that all qualifying value automatically receives 100% relief.

Why evidence matters so much

The existence of an asset or a relationship does not automatically settle the claim.

For example, you may still need to show:

  • what was owned and how
  • who is inheriting and under what route
  • what type of asset is involved
  • why the asset falls within the relief or exemption being considered

The larger or more technical the claim, the stronger the case for documenting the reasoning explicitly.

The most common executor mistakes

Problems usually arise when executors:

  • assume a relief applies because they have heard of it before
  • fail to separate exemptions from reliefs in their own analysis
  • record the tax outcome but not the evidence behind it
  • treat a specialist claim as routine

The right mindset is cautious: if a claim changes the tax bill materially, it deserves a clearly documented basis.

How to keep the claim defensible

Good practice usually means:

  1. identify the claim separately from the rest of the tax route
  2. note the factual conditions that need to be met
  3. collect the relevant supporting documents
  4. record why the claim is being made
  5. flag any point that still depends on specialist advice

That written rationale is often more valuable than a confident assumption.

Using Estate Suite for claims

Estate Suite helps most when:

  • the supporting documents are attached to the relevant tax issue
  • the estate asset record clearly identifies the asset or transfer involved
  • open claim questions are tracked visibly
  • the IHT workflow explains why the claim is included in the overall position

This is especially important where several claims or exemptions interact.

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