How ISA Allowances Work in the UK (2024 Guide)
The 2024-2025 ISA allowance is £20,000 across all ISA types. Here's how the mechanics work:
Annual Limits Breakdown
- Cash ISA: Up to £20,000 total ISA allowance
- Stocks & Shares ISA: Part of the £20,000 limit
- LISA: Separate £1,000 annual limit + 50% government bonus
- IFISA: Uses main £20,000 allowance
Flexible ISA Rules
Flexible ISAs let you:
- Withdraw and redeposit funds within the same tax year
- Reallocate amounts up to your remaining allowance
- Maximize contributions through strategic timing
Carryover & Penalties
| Scenario | Rules |
|---|---|
| Unused allowance | Does NOT carry over to next tax year |
| Excess contributions | 25% tax charge on overpayments |
| LISA overpayments | Loss of government bonus + 25% tax |
Use our ISA Allowance Calculator to track your usage and avoid penalties. Check remaining limits for Cash, Stocks & Shares, LISA, and IFISA accounts.