The end of the tax year on 5 April is your last chance to use this year’s £20,000 ISA allowance. Here is how to make the most of it, even if you are leaving it late.
Key Dates for ISA Season 2026
| Date | What happens |
|---|---|
| Now – 5 April 2026 | Last chance to use 2025/26 ISA allowance |
| 2–3 days before 5 April | Cut-off for some S&S ISA providers |
| 5 April 2026 (Sunday) | Final day of 2025/26 tax year — unused allowance expires |
| 6 April 2026 (Monday) | New 2026/27 tax year starts — fresh £20,000 allowance |
The 2025/26 ISA Allowance
| ISA type | Maximum contribution | Notes |
|---|---|---|
| Cash ISA | Up to £20,000 | Across one or multiple providers |
| Stocks and Shares ISA | Up to £20,000 | Across one or multiple providers |
| Innovative Finance ISA | Up to £20,000 | Peer-to-peer lending |
| Lifetime ISA | Up to £4,000 | Counts towards £20,000 total |
| Total across all | £20,000 | Combined maximum |
Since April 2024, you can pay into multiple ISAs of the same type. You could split money across several Cash ISAs, for example.
Where to Put Your Money — Quick Decision
| Your situation | Best option |
|---|---|
| Money you might need this year | Easy access Cash ISA or savings account (whichever pays more) |
| Saving for 3+ years | Stocks and Shares ISA |
| Saving for first home (under 40) | Lifetime ISA (£4,000 max, 25% bonus) |
| Higher/additional rate taxpayer | Cash ISA or S&S ISA (protects interest/gains from tax permanently) |
| Basic rate taxpayer with under ~£22,000 savings | Whichever pays the best rate — Cash ISA or savings account |
| Want to invest but don’t know what | Stocks and Shares ISA in a global index fund |
Last-Minute Cash ISA
If you just want to use your allowance quickly and safely:
| Step | Action |
|---|---|
| 1 | Compare best easy-access Cash ISA rates (look for 4%+ AER) |
| 2 | Open online (takes minutes) |
| 3 | Transfer money in (instant by debit card at most providers) |
| 4 | Done — you have used your allowance |
You can always transfer to a better ISA later without losing the tax-free status.
Last-Minute Stocks and Shares ISA
| Step | Action |
|---|---|
| 1 | Choose a platform (Vanguard, AJ Bell, Hargreaves Lansdown, InvestEngine, etc.) |
| 2 | Open a S&S ISA online |
| 3 | Deposit money (check provider’s cut-off date) |
| 4 | If unsure what to invest in, the money can sit as cash inside the ISA until you decide |
| 5 | When ready, invest in a diversified fund (e.g. global index tracker) |
Key tip: Money deposited into a Stocks and Shares ISA but held as cash still counts as using your allowance. You can invest it later.
Using Both Tax Years
If you have money to save, you can maximise two tax years’ worth of allowance around the April deadline.
| Action | Timeline |
|---|---|
| Use remaining 2025/26 allowance | Before 5 April 2026 |
| Use 2026/27 allowance | From 6 April 2026 |
| Total potential ISA investment | Up to £40,000 (£20,000 × 2) |
This is particularly useful for a lump sum — perhaps from a bonus, property sale, or inheritance.
Common ISA Mistakes to Avoid
| Mistake | Why it matters |
|---|---|
| Leaving it too late | Some providers need 2–3 days to process deposits |
| Exceeding the £20,000 limit | HMRC will require the excess to be removed and tax benefits lost |
| Forgetting the LISA counts | £4,000 into a LISA uses £4,000 of your £20,000 total |
| Withdrawing and re-depositing (non-flexible ISA) | The deposit counts as a new subscription |
| Transferring incorrectly | Always use the ISA transfer process, not withdraw-and-deposit |
| Choosing a bad rate just to use the allowance | Compare rates — even a last-minute ISA should pay well |
| Not using both partners’ allowances | Each person has £20,000 — couples can shelter £40,000 per year |
ISA Allowance for Couples
| Individual | Annual ISA allowance | Total per couple |
|---|---|---|
| Person 1 | £20,000 | |
| Person 2 | £20,000 | |
| Combined | £40,000 |
Each person manages their own ISA — you cannot contribute to a partner’s ISA, but you can gift them money to fund it.
Do You Need a Cash ISA or Savings Account?
| Tax band | PSA | Cash ISA useful if… |
|---|---|---|
| Basic rate (20%) | £1,000 | Savings interest exceeds £1,000/year (~£22,000+ at 4.5%) |
| Higher rate (40%) | £500 | Savings interest exceeds £500/year (~£11,000+ at 4.5%) |
| Additional rate (45%) | £0 | Any amount — all interest is taxable |
If you are well within your PSA, pick whichever pays the highest rate. If you are close to or over your PSA, a Cash ISA permanently shelters interest from tax.
Lifetime ISA Reminder
| Detail | Information |
|---|---|
| Annual limit | £4,000 (counts towards £20,000 ISA total) |
| Government bonus | 25% (paid monthly, up to £1,000/year) |
| Who can contribute | Age 18–49 |
| Use for | First home purchase (under £450,000) or retirement (from age 60) |
| Early withdrawal penalty | 25% — you lose some of your own money |
| Deadline to maximise bonus | Must pay in before 5 April |
If you are eligible and saving for a home or retirement, the 25% bonus is one of the best deals available.
Transfer Existing ISAs Without Using New Allowance
| Transfer type | Uses this year’s allowance? |
|---|---|
| Previous years’ ISA savings to a new provider | No |
| This year’s subscriptions to a new provider | No (but must transfer the full amount for current year) |
| Withdraw and deposit into new ISA | Yes — this is a new subscription |
Always use the ISA transfer form, not a withdrawal and deposit.
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