Tax-Free Returns Beyond the ISA
A Qualifying Corporate Bond (QCB) is a sterling-denominated bond that is not convertible into shares and is not denominated in a foreign currency. Many UK gilts also benefit from a similar exemption
* Tax rules and the relative tax rates depend on individual circumstances and may change. This page is general information only. It is not tax advice and should not be relied on as such. Please speak to a qualified tax advisor before making any investment decision.
How the QCB rules work
Read the HMRC guidance: Capital Gains Manual CG33706
Zero capital gains tax on the uplift
If a bond is bought below its £100 face value and held to maturity, the difference between the purchase price and the £100 returned at maturity is a capital gain. Under HMRC rules, capital gains on QCBs are exempt from CGT.
Equally, capital losses arising from the disposal of QCBs are generally not allowable either.
The ISA allowance is £20,000 a year
The ISA wrapper protects income and gains from tax up to that limit. The CGT exemption on QCBs sits outside the ISA wrapper and is an entirely separate piece of tax legislation.
Higher-rate taxpayers
Savings interest above the £500 Personal Savings Allowance is taxed at 40%. Because the QCB exemption applies to the capital-gain portion of a bond's return, the tax treatment of a discounted QCB can differ materially from a savings account.*
* Tax outcomes depend on individual circumstances. Please consult a qualified tax advisor.
Buy below par, keep the gain
When interest rates rise, existing bonds with low coupons trade below £100. Buy at a discount, hold to maturity, and the difference is a capital gain — exempt from CGT on a QCB.
Drag to see the tax-free capital gain on a bond bought at £90 and redeemed at £100 at maturity.*
* Illustrative only — assumes purchase at £90 per £100 face value and held to maturity. The coupon (interest) is still taxable outside an ISA. Not advice; tax outcomes depend on individual circumstances.
You invest (at £90)
You receive at maturity (£100 par)
Tax-free capital gain
£1,111
0% CGT
4Finance
Marks & Spencer
Netflix
United Group
International Personal Finance
Barclays
Grifols
HM Treasury
LendInvest
Stonegate
Do you label which bonds are QCBs on the platform?
WiseAlpha cannot confirm or guarantee QCB status for any individual bond. Whether a specific bond is a QCB depends on its precise legal characteristics and how those interact with HMRC's rules.
We do not label individual bonds as QCBs on our platform, and we cannot provide tax classifications. Investors should do their own research and speak to a qualified tax advisor before relying on the QCB exemption.
What about gilts?
UK government bonds (gilts) are not technically QCBs, but they benefit from a parallel CGT exemption under section 115 of the Taxation of Chargeable Gains Act 1992. The practical result is the same: any capital gain on a gilt is exempt from CGT.
Gilts are available on the WiseAlpha market with 0% Service Fees.
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Direct bond or bond fund? It changes the tax treatment.
The QCB exemption applies to a qualifying bond. It does not automatically pass through a fund simply because the fund holds qualifying bonds.
You own the bond
The exemption follows the eligible security you hold.
Qualifying corporate bonds labelled as QCBs
UK government gilts, which are exempt under separate rules
You own shares or units
Your gain is assessed on the fund holding, not each underlying bond.
Bond ETFs
Bond mutual funds
OEICs and unit trusts
Frequently asked questions
Email our investing team if you have an unanswered question.
Are all bonds on WiseAlpha QCBs?
No. Many of the corporate bonds available on the WiseAlpha market are sterling-denominated and non-convertible, which means they generally meet HMRC's QCB definition. However, WiseAlpha cannot guarantee QCB status for any individual bond. QCB status depends on the precise legal characteristics of each bond and how those interact with HMRC's rules. Investors should do their own research and speak to a qualified tax advisor.
Why don't you tell me which bonds are QCBs?
WiseAlpha is an investment platform, not a tax advisor. Confirming whether a bond is a QCB is a tax classification that depends on the specific legal characteristics of the bond and the investor's circumstances. Providing definitive QCB labels would amount to tax advice, which we are not authorised to give. Investors should do their own research and consult a qualified tax advisor before relying on the QCB exemption.
Do gilts count as QCBs?
Gilts are not technically QCBs but they get the same CGT treatment under a different statute. For practical purposes, capital gains on gilts are exempt from CGT.
Why not just hold bonds in a bond ETF?
Bond ETFs give you exposure to a basket of bonds but you lose the QCB and gilt CGT exemptions because you own units in a fund, not the underlying bonds. Capital gains on your fund units are subject to CGT in the normal way.
What happens if I sell a QCB before it matures?
Any capital gain on the sale is still exempt from CGT, provided the bond met the QCB definition while you held it. Coupon income you received along the way remains taxable outside an ISA.*
* Tax outcomes depend on individual circumstances.
Does the QCB exemption apply to bonds inside my ISA?
Income and gains on any bond inside an ISA are already exempt from income tax and CGT under the ISA wrapper rules. The QCB exemption is a separate piece of tax legislation that applies to bonds held outside an ISA.
Where can I learn more?
The WiseAlpha Bond Academy covers how bonds work, what coupons and yields are, and how to think about credit risk. For tax-specific questions, please speak to a qualified tax advisor.