Quick answer
Are Interest and Investments From Lottery Winnings Taxable?
They can be. A UK National Lottery prize itself is not subject to Income Tax, but money earned after the win is treated under the normal tax rules.
Interest from ordinary savings can be taxable. Dividends from shares can be taxable. If you sell an investment for more than it cost, Capital Gains Tax can apply to the gain.
The important point is that HMRC is not taxing the lottery win again. It is taxing new income or gains created after the win.
Same money, different tax
What Happens If £1 Million Produces £40,000?
The tax can be very different depending on how the £40,000 was made. This example uses a higher-rate taxpayer and assumes their Personal Allowance is already used.
£40,000 dividends
£14,121 Illustrative dividend tax after the £500 dividend allowance at 35.75%.£40,000 capital gain
£8,880 Illustrative CGT after the £3,000 annual exempt amount at 24%.Illustrative tax on £40,000 of return
This is not saying one type of return is better. Risk, access, investment losses and your wider tax position matter too.
A capital gain is normally taxed when the gain is realised, such as when an investment is sold. Investment growth that has not been sold is not the same as cash interest arriving in your account.
Current tax year
UK Tax Rates That Matter to Lottery Winners in 2026/27
These are the main allowances and rates for ordinary savings interest, dividends and capital gains.
| Type of return | Tax-free amount / allowance | Basic rate | Higher rate | Additional rate |
|---|---|---|---|---|
| Savings interest | Personal Savings Allowance: £1,000 basic, £500 higher, £0 additional | 20% | 40% | 45% |
| Dividends | £500 dividend allowance | 10.75% | 35.75% | 39.35% |
| Capital gains | £3,000 annual exempt amount | 18% | 24% | 24% |
| ISA interest, income & gains | Up to the ISA rules and annual subscription limit | 0% | 0% | 0% |
2026/27 ISA limit: you can subscribe up to £20,000 across ISAs during the tax year. Interest, investment income and capital gains inside an ISA are generally tax-free.
Interactive example
Lottery Winnings Return Tax Explorer
Enter the amount of interest, dividends or realised investment gain — not the size of the lottery prize. This gives a simple 2026/27 estimate based on the tax band you choose.
Allowance used£500
Amount taxed£39,500
Estimated tax£15,800
Savings estimate assumes your Personal Allowance is already used and you do not qualify for the starting rate for savings. Your actual tax can differ if you have little other income.
For a fuller UK lottery tax calculation, including how savings interest fits into the wider tax picture, use the MLL UK tax on lottery winnings guide and calculator.
Cash and bank accounts
Tax on Savings Interest From Lottery Winnings
If you put lottery winnings into a normal savings account, the money you won is still the original tax-free prize. The interest paid by the bank is new savings income.
For 2026/27, a basic-rate taxpayer can usually receive up to £1,000 of savings interest under the Personal Savings Allowance. A higher-rate taxpayer gets £500. Additional-rate taxpayers do not receive a Personal Savings Allowance.
Some people with low other income can also use the starting rate for savings, worth up to £5,000. It reduces as other income rises and is not available once other income reaches £17,570.
How quickly can a large win use the allowance?
At 4% interest, £25,000 produces £1,000 a year. That alone would use the full Personal Savings Allowance of a basic-rate taxpayer.
At the same rate, £1 million produces £40,000 of annual interest before tax.
Does the bank tell HMRC?
Yes. Banks and building societies report savings interest to HMRC. If savings and investment income is over £10,000, HMRC says you need to register for Self Assessment.
Shares and funds
Dividend Tax After Investing Lottery Winnings
If you use lottery winnings to buy shares or funds that pay dividends, those dividends can be taxable. The lottery money used to buy the investment has not become taxable — the dividend income is the new taxable event.
The dividend allowance is £500 in 2026/27. Dividend tax rates are 10.75% for the ordinary rate, 35.75% for the upper rate and 39.35% for the additional rate.
Example: a higher-rate taxpayer receives £20,000 of dividends outside an ISA. After the £500 dividend allowance, £19,500 is taxable. At 35.75%, that is an illustrative £6,971.25 of dividend tax.
The real calculation can change if the dividend income crosses tax bands or if part of the Personal Allowance is still available.
Investment income inside a Stocks and Shares ISA is generally tax-free. But the annual ISA subscription limit means a jackpot winner cannot move millions into an ISA in one go.
Selling investments
Capital Gains Tax on Investments Bought With Lottery Winnings
You do not pay Capital Gains Tax on the lottery winnings themselves. But if you use the money to buy investments and later sell them for more than they cost, the gain can be taxable.
The individual Capital Gains Tax annual exempt amount is £3,000 for 2026/27. The main CGT rates are 18% and 24%, depending on your taxable income and how much of the gain falls into each band.
Example: you invest £500,000 and later sell the investment for £560,000. The £60,000 increase is the gain. The original £500,000 came from lottery winnings, but that does not make the £60,000 gain tax-free.
If you are already a higher-rate taxpayer, a simple illustration would deduct the £3,000 annual exempt amount and apply 24% to the remaining £57,000, giving £13,680 of CGT. Actual calculations can differ if you have other gains, losses or reliefs.
Tax-free wrappers
Can You Put Lottery Winnings Into an ISA?
Yes, but only within the normal annual ISA limits. For 2026/27, the overall ISA subscription limit is £20,000. Interest on cash in an ISA and income or capital gains from investments inside an ISA are generally tax-free.
£20,000 Maximum total ISA subscription for the 2026/27 tax year.
50 years How long it would take to subscribe £1 million at £20,000 a year if the limit never changed. That is why an ISA helps, but is not a complete plan for a jackpot.
Stocks and Shares ISA
Dividends and capital gains inside the ISA are generally tax-free and do not need to be declared on a tax return.
Premium Bonds
Premium Bond prizes are free from UK Income Tax and Capital Gains Tax. The maximum holding is £50,000 per person. Premium Bonds do not pay guaranteed interest; returns come through the prize draw.
Next tax year
What Changes From 6 April 2027?
These changes are not the 2026/27 rates. They start in the following tax year, so they are shown separately.
Savings tax rates rise
From 6 April 2027, savings-income rates are due to rise to 22% for basic-rate taxpayers, 42% for higher-rate taxpayers and 47% for additional-rate taxpayers.
The Personal Savings Allowance is due to remain £1,000 for basic-rate taxpayers and £500 for higher-rate taxpayers.
Cash ISA limit changes for people under 65
From 6 April 2027, the annual Cash ISA limit for people under 65 is due to fall to £12,000. The overall ISA limit remains £20,000, and people aged 65 or over can continue to put up to £20,000 into a Cash ISA.
A better way to think about it
Do Not Choose an Investment Only Because the Tax Looks Lower
Tax matters, but it is only one part of the decision. Cash, shares, bonds, property and other investments have different levels of risk, access and potential return.
A lottery winner with £10 million does not need to chase the highest return just to make the money “work”. The first job is usually to decide how much needs to stay safe and accessible, how much you expect to spend, and how much can genuinely be invested for the long term.
Our Investing & Wealth hub, cash safety guide and financial advice guide cover those decisions in more detail.
Common questions
Lottery Winnings Interest & Investment Tax FAQs
Is interest earned on lottery winnings taxable?
Yes, it can be. Interest from ordinary savings is savings income. The tax-free amount depends on your Personal Allowance, starting rate for savings and Personal Savings Allowance.
Do I pay tax just for keeping lottery winnings in the bank?
No. Holding the original cash does not create Income Tax. The interest the bank pays can be taxable.
Are dividends from investments bought with lottery winnings taxable?
They can be. In 2026/27 the dividend allowance is £500, with tax charged above that depending on your tax band. Dividends inside an ISA are generally tax-free.
Do I pay CGT if my investments go up in value?
Capital Gains Tax normally becomes relevant when you dispose of an asset and realise a gain. Simply seeing the value rise on a statement is not the same as selling it.
Can I put all my lottery winnings into an ISA?
No. You can use an ISA, but new subscriptions are limited each tax year. The overall 2026/27 ISA subscription limit is £20,000.
Are Premium Bond prizes taxable?
No. NS&I states that Premium Bond prizes are free from UK Income Tax and Capital Gains Tax. The maximum holding is £50,000 per person.
Does HMRC know how much savings interest I receive?
Banks and building societies report interest to HMRC. HMRC may collect tax through your tax code or require Self Assessment depending on the amount and your circumstances.
Will savings tax be higher in 2027/28?
Yes. From 6 April 2027, savings-income rates are due to rise to 22%, 42% and 47%. Those are next tax year's rates, not the 2026/27 rates used on this page.
Official sources
Where We Checked the 2026/27 Tax Rules
The figures on this page were checked against current GOV.UK and NS&I information. Tax rules change, so check the official position before acting on a large sum.
- GOV.UK — Tax on savings interest ↗
- GOV.UK — Tax on dividends ↗
- GOV.UK — Capital Gains Tax rates ↗
- GOV.UK — How ISAs work ↗
- GOV.UK — Savings and dividend tax changes ↗
- GOV.UK — Cash ISA changes from April 2027 ↗
- NS&I — Premium Bonds ↗
General information, not personal tax or investment advice. Your actual tax depends on your other income, gains, losses, allowances, residence and investments. Investment values can fall as well as rise. Last checked: 17 September 2026.