Best Junior ISA UK 2026
A Junior ISA is a tax-free savings account for children under 18. With a £9,000 annual allowance and decades of compound growth, a JISA opened at birth can build into a life-changing sum.
How Much Could You Build?
Investing £200 per month from birth at 7% average annual return:
| Child Age | Total Invested | Estimated Value |
|---|---|---|
| 5 | £12,000 | approximately £14,200 |
| 10 | £24,000 | approximately £34,800 |
| 18 | £43,200 | approximately £87,000 |
Even £50 per month from birth builds to approximately £20,000 by age 18.
Best Stocks and Shares JISAs
| Provider | Annual Fee | Notes |
|---|---|---|
| Vanguard | 0.15% | Very low cost, simple |
| Hargreaves Lansdown | 0.45% | Widest fund range |
| Fidelity | 0.35% | Wide selection |
| Wealthify | 0.22–0.7% | Ethical options available |
Best Cash JISAs
| Provider | Rate |
|---|---|
| Coventry Building Society | 4.95% AER |
| Nationwide | 4.25% AER |
| Santander | 4.0% AER |
Cash vs Stocks and Shares JISA
For a child with 10 or more years until access, a stocks and shares JISA almost always makes more sense. If the child is approaching 18, consider moving to a cash JISA to protect against a market downturn just before access.
Junior ISA allowances are reviewed annually. Check GOV.UK for the latest figures.