A UK tax story about bonds, annuities and life cover (hypothetical)

Alex is 46, UK-resident, busy, and financially organised (or so he thinks). One Saturday morning he opens a thick envelope from an insurer. The headline is bland:

“Chargeable Event Certificate.”

Inside: a gain of £150,000.

Alex’s first thought is exactly what I hear all the time on LinkedIn: “That’s capital gains, right? I’ll use my annual exemption.”

No. Chargeable event gains are income, not capital gains—so you cannot offset them with CGT losses or the annual exempt amount.

Let’s walk through what happened to Alex—because this is where insurance products become tax products.

Scene 1 “It’s just an investment bond. 

I only took 5% a year.”

In 2016, Alex invests £200,000 into a UK onshore investment bond (a non-qualifying life policy in most real-world cases, but the mechanics below are what catches people out).

From 2016 to 2023 he withdraws £10,000 each policy year. He’s been told this is “tax-free”.

That phrase is the trap.

HMRC’s language is much more precise:

• you can withdraw up to 5% per insurance year without a gain arising in that year;
• unused 5% can be carried forward;
• but it’s not tax-free—it’s a deferral mechanism, and withdrawals feed into the final gain calculation when the policy ends. (GOV.UK)

So Alex’s withdrawals didn’t “escape” tax. They merely didn’t trigger an annual chargeable event gain at the time.

Scene 2 —  The year Alex “overdraws” 

(and accidentally manufactures a gain)

In 2024 (still holding the bond), Alex needs cash for a house purchase and takes an additional £60,000 withdrawal.

Here’s the core idea:

• The policy has a cumulative 5% allowance per insurance year (5% × premium).
• Once total withdrawals exceed cumulative allowances, the excess is treated as a chargeable event gain.

With Alex’s figures:

• Premium: £200,000
• 5% allowance per year: £10,000
• After 9 policy years (2016–2024): cumulative allowance = £90,000
• Total withdrawals by then = £10,000 × 8 years + £60,000 = £140,000
• Excess = £140,000 − £90,000 = £50,000 → taxable gain (in that year)

This is consistent with HMRC’s “part surrender” logic (a gain arises when value surrendered exceeds the allowable premium element). (GOV.UK)

So now Alex has already triggered a £50,000 income tax problem—without selling the bond.

Scene 3 — The bond ends (and the 

“sleeping tax” wakes up)

In November 2025 (tax year 2025/26), Alex fully surrenders the bond and receives £260,000.

HMRC’s simplified approach for maturity/full surrender is:

Gain = Total Benefits (TB) − (Total Deductions (TD) + Previous Gains (PG))

Let’s apply that (hypothetical, but mechanically faithful):

• TB = everything Alex has received over the life of the policy:
  £260,000 (final surrender) + £140,000 (all earlier withdrawals) = £400,000  
• TD = premiums paid = £200,000  
• PG = gains already taxed in earlier years = £50,000  

So the 2025/26 gain is:

£400,000 − (£200,000 + £50,000) = £150,000

This is why the certificate looks so brutal: withdrawals you thought were “safe” come back into the final computation.  

Scene 4 — Why Alex’s accountant

starts talking about “Top-slicing”

If Alex’s other income is, say, £70,000, adding a one-off £150,000 gain can push him into higher/additional rate bands.

HMRC recognises this cliff-edge and provides Top-slicing relief, generally aimed at situations where:

• you wouldn’t pay higher/additional rate on your other income, but you do once the gain is added. 

In plain English: it tries to tax the gain more like it arose over the years the bond was held, rather than in one spike.

Top-slicing is powerful—but it’s also where mistakes happen, because it interacts with bands, allowances, and the way the gain is treated as income.

Scene 5 — The offshore twist (foreign

policies, time apportionment, and

PPBs)

Now imagine Alex’s bond wasn’t UK onshore, but issued by a non-UK insurer (a “foreign policy”).

Three extra complications tend to appear:

1) It’s still income, not capital gains

Same trap: income tax rules, not CGT.  

2) There may be a time-apportioned reduction

If Alex was non-UK resident for part of the ownership period, the gain can be reduced under time apportionment rules. HMRC states the gain is reduced where the relevant person “was not resident in the UK for any part of the period since the policy was taken out,” with different rules pre-6 April 2013.  

3) Watch for Personal Portfolio Bonds (PPBs)

PPBs can create an annual charge, broadly where the policyholder can effectively choose the underlying assets beyond permitted categories.
This is one of the nastiest “surprise taxes” in the insurance space because it can bite even without withdrawals.

Also note: HMRC flags that foreign policy gains “normally… do not attract a non-repayable basic rate tax credit” (a key practical difference versus many UK onshore situations).  

Scene 6 — When markets fall:

“Deficiency relief” (rare, but real)

Suppose Alex had earlier chargeable event gains taxed, then markets crashed, and on final surrender the computation is negative because prior gains are dragged into the final formula.

HMRC says there’s generally no relief for a loss, but deficiency relief may apply where:

• event is death/full surrender/maturity,
• prior gains were included,
• and the result is negative—relief can reduce tax on other income liable to higher rate tax (and it’s not available to trustees/personal representatives in the foreign policy context). 

It’s not common, but if you’re in that fact pattern, ignoring it is leaving money on the table.

Scene 7 — Purchased

Life Annuities (PLA) are taxed

differently

Later in life, Alex uses taxed savings (not a pension) to buy a Purchased Life Annuity.

This is where many people overpay tax because they don’t realise the payment contains two components:

• a return of capital (potentially exempt), and
• an income element (taxable).

HMRC’s IPTM manual is explicit: legislation prescribes the part of each annuity payment treated as exempt after a claim, and no tax is charged on the exempt capital amount. 

HMRC also explains the concept: the “capital element” (exempt sum/proportion) broadly comes from dividing purchase price by life expectancy using prescribed mortality tables. 

Operationally, this often means completing PLA6, so the provider can calculate and pay the exempt capital element tax-free. 

Scene 8 — The “insurance payout isn’t

taxable” myth: Income tax vs

Inheritance Tax

One more envelope. This time it’s after death.

Alex had a life policy intended to provide liquidity for his family. The payout itself is not usually an income tax event for the recipient in the way bond gains are—but Inheritance Tax is where ownership becomes decisive.

HMRC’s IHT manual states that where the deceased is the life assured, policy proceeds form part of their free estate and are taxable on death.

And HMRC confirms a life policy is property that can be assigned or placed in trust (so structure matters). 

This is why “written in trust” is so widely discussed right now: HMRC describes that writing a policy into trust means the policy is held as an asset by a trust, often for estate planning and easier distribution. 

But there’s a technical nuance many miss: HMRC also highlights that investment bonds inside trusts can behave differently for Trust Registration Service purposes because withdrawals/part surrenders can be “pay outs” by design. 

Practical checklist 

(the one Alex wishes he had in 2016)

If you (or your client) hold insurance products, these are the questions I’d ask before tax year end:

1. What is it, legally? qualifying vs non-qualifying; UK vs foreign; PLA vs bond; PPB risk. 
2. Have there been “chargeable events”? part surrenders, maturity, assignments for value.  
3. Are withdrawals within 5%? And remember: 5% is not tax-free, it’s deferral. 
4. If surrendering, have you modelled the TB/TD/PG computation? 
5. Does top-slicing help?  
6. Any non-UK residence period? consider time apportionment (especially for foreign policies).  
7. For PLAs: has the exempt capital element been claimed/implemented? (GOV.UK)
8. For life cover: who owns the policy, and is it in trust? IHT and administration can turn on that.  
9. If you’ve received a “Chargeable Event Certificate”, or you hold investment bonds / foreign policies / purchased life annuities, it’s worth sanity-checking the tax position before you file—because these gains are income, not capital gains, and the timing can be counter-intuitive (policy years, 5% withdrawals, top-slicing, time apportionment, deficiency relief).  

Any questions? Email me at angelo@vectigalistax.co.uk with (i) the certificate(s), (ii) policy start date, (iii) premium(s), (iv) withdrawals history, (v) surrender/maturity date, and (vi) your UK residence history if there were any overseas years—so I can tell you what the real exposure is (and whether reliefs may apply

This article is general UK tax commentary based on a hypothetical scenario. It is not tax advice and should not be relied upon to take (or refrain from taking) action. The tax treatment of insurance products depends heavily on policy terms, residence history, ownership, assignments, and timing—always review the documentation and facts before filing or restructuring.