Best For Low-Cost ISA Award 2025

Why We Research ISA Costs

For 9 consecutive years, our Best Buy Awards have helped investors like you make smarter choices. When it comes to ISAs, we know costs matter - they directly impact how much of your money stays invested and working for you.

Our research combines deep technical analysis with insights from over 22,000 real customer reviews. But for this specific award, we stripped everything back to focus on one thing: pure cost comparison.

What Makes Our Cost Analysis Different

We don't just look at headline rates. Our comprehensive analysis examines:

• Platform charges across different portfolio sizes

• Total cost of investing in ready-made portfolios

• Real costs for both small and large investors

This approach revealed some surprising winners for 2025, with newer platforms challenging traditional brokers on cost.

A Peek at Our Top Winners

Let's look at the 2025 winners. They've earned their place by offering:

• Commission-free ETF trading

• Rock-bottom platform charges

• Both growth and income portfolio options