How ISA Inheritance Works (APS Guide – UK 2026)

Scope: UK-wide. ISA inheritance rules apply across England, Wales, Scotland, and Northern Ireland. Content reflects confirmed rules following the November 2025 Budget and January 2026 updates.

TL;DR

• ISAs do not vanish when someone dies.
• A surviving spouse or civil partner receives an Additional Permitted Subscription (APS).
• APS is a one-off extra ISA allowance, equal to the value of the deceased’s ISA(s).
• APS is in addition to the normal annual ISA allowance.
• Used correctly, APS preserves decades of tax-free growth.

What Is Additional Permitted Subscription (APS)?

Additional Permitted Subscription (APS) is a special ISA inheritance rule that allows a surviving spouse or civil partner to keep the deceased’s ISA savings tax-free.

Instead of losing the ISA wrapper:

• You receive an extra ISA allowance
• Equal to the value of the deceased’s ISAs at death (or when settled)
• Which you can use to shelter cash or investments again

This is one of the most valuable but least understood estate planning benefits in the UK.

Who Qualifies for APS?

You qualify if you were:

• Married to, or in a civil partnership with, the deceased
• Living together at the time of death (separation can complicate claims)

APS does not apply to:

• Children
• Unmarried partners
• Other beneficiaries

Advisor insight:
APS is a spousal tax privilege, not a general inheritance rule.

How Much APS Do You Get?

Your APS allowance equals:

• The total value of all ISAs held by the deceased

There is no upper limit.

Example

• Deceased held £180,000 across Cash and Stocks & Shares ISAs
• Surviving spouse receives £180,000 APS
• Plus their normal £20,000 annual ISA allowance

Total shelter available that year: £200,000

Timing Rules That Catch People Out

APS is not unlimited in time.

Standard Deadlines

• Cash ISAs: APS must usually be used within 3 years of death
• Stocks & Shares ISAs: Often 180 days after estate completion

Exact deadlines depend on the provider — but missing them can permanently destroy the tax advantage.

Cash ISA vs Investment ISA APS

APS can be used in two ways:

Cash APS

• Use APS to deposit cash into a new or existing Cash ISA
• Suitable if the estate is paid out in cash

In-Specie (Investment) APS

• Transfer investments directly into an ISA
• Avoids selling assets and triggering capital gains

Not all providers support in-specie transfers — choosing the wrong provider can force a taxable sale.

A Crucial 2026 Context: Why APS Matters More Now

With the Cash ISA allowance cut for under-65s from April 2027, APS has become even more valuable.

APS:

• Bypasses future allowance cuts
• Protects historic tax-free shelter
• Cannot be recreated once lost

In practice, APS often matters more than a decade of annual allowances.

Common APS Mistakes (And How to Avoid Them)

Withdrawing ISA funds too early

Once ISA money is withdrawn incorrectly, the tax-free status can be lost.

Missing provider deadlines

APS is time-limited and provider-specific.

Using the wrong ISA type

Cash-only providers may block in-specie investment transfers.

Assuming APS is automatic

It is not — you must actively apply.

Step-by-Step: How to Use APS Correctly

1. Obtain the death certificate
2. Ask the ISA provider for an APS valuation letter
3. Choose a provider that supports your intended ISA type
4. Open the APS ISA account
5. Transfer or contribute funds within the deadline

Advisor note:
Always confirm APS procedures before withdrawing any money.

Tax Position During Estate Administration

While the estate is being settled:

• ISA tax protection ends at death
• Interest or gains earned before APS is used may be taxable
• APS restores the tax shelter from the point of subscription

This is why delays quietly erode value.

Is APS Financially Worth Using?

• Small ISAs (£10k–£20k): Still worth doing
• Medium ISAs (£50k–£150k): Very valuable
• Large ISAs (£150k+): One of the biggest tax-saving tools available

Main risk: not knowing APS exists until it is too late.

People Also Ask (PAA) & FAQs

What is Additional Permitted Subscription?

APS is a one-off extra ISA allowance for a surviving spouse, equal to the value of the deceased’s ISAs.

Does APS replace my annual ISA allowance?

No. APS is on top of your normal annual allowance.

Can APS be used for Cash and Stocks & Shares ISAs?

Yes, depending on provider capability and whether investments are transferred in-specie.

Is APS affected by the 2027 ISA allowance cut?

No. APS sits outside annual allowance limits.

What happens if I miss the APS deadline?

The allowance is lost permanently and cannot be reinstated.

Do I need a solicitor to use APS?

No, but complex estates may benefit from professional guidance.

APS is one of the most powerful ISA rules available, but it works best when combined with wider planning. To decide where inherited cash should actually be held, our cash ISA vs savings account for retirees guide explains when tax-free wrappers materially outperform taxable accounts. To understand why APS has become even more valuable, the ISA allowance cut explained April 2027 sets out how future limits no longer apply to inherited ISAs. Once those rules are clear, our review of the best Cash ISAs for estate planning helps ensure inherited funds are not left earning poor default rates. Together, these guides protect both the money and the tax-free status.