As the tax year-end fast approaches, parents have a narrow window to maximise their child’s £9,000 annual allowance and harness the power of compound growth over the long term.
We all live busy lives, and so putting additional funds aside to save for your kids’ future can often be an afterthought. But with time on their side, they are in the best position to reap the rewards of investing.
Introduced in 2011 as the successor to Child Trust Funds, a Junior ISA (JISA) provides complete tax exemption on capital growth, dividends, and interest. This tax efficiency, combined with an 18-year investment horizon, creates an ideal environment for families to build substantial wealth for their children’s future needs, whether that’s university funding, a first home deposit, or simply providing financial security as they enter adulthood.
Once invested, funds cannot be accessed by the child until they turn 18. At that point, funds are transferred into a regular ISA in their name and can be withdrawn if need be. They can however, start managing the account once they turn 16. This means that it can be used as a powerful tool to teach the value of consistent, long-term investing as a young adult without the urge of spending.
Chris Rudden, Head of Investment Consultants at Moneyfarm, said: “Starting early with a Junior ISA is one of the most effective ways to give a child a financial head start. The magic of compounding means that even small, regular contributions can grow into a significant sum over 18 years. Investing for the long term helps smooth out the ups and downs of the market and encourages a mindset focused on future goals rather than short-term gains.”
Moneyfarm’s analysis demonstrates the profound impact of starting early with JISA contributions. Parents investing £100 monthly from their child’s birth could see their investment grow to nearly £70,000 by the time their child reaches 18, assuming a 5% annual return. In stark contrast, those who delay until their child is 15 and contribute £600 monthly would accumulate just over £27,000 by the same milestone, highlighting how time in the market significantly outweighs timing the market.
The power of compound growth becomes even more relevant given the current policy environment. The JISA allowance has remained frozen at £9,000 since 2020, making it essential for families to maximise the tax-efficient opportunities available within existing thresholds. Unlike adult ISAs, JISAs offer a unique combination of tax-free growth and enforced long-term discipline.
Chris Rudden added “A JISA isn’t just about saving money; it’s about instilling the principles of patience and consistency that will serve children well throughout their financial lives. By starting early, staying disciplined with regular contributions, and keeping a long-term perspective, parents can instil habits that mean they have not only built a financial safety net for their children but have also helped them develop the confidence and knowledge to manage their own finances as adults.”















