Best Stocks and Shares ISA Providers in 2025 – Ranked by Which?

By: Swarnalata

Published on: Mar 21, 2025

The Best Stocks and Shares ISA Providers in 2025 – Ranked by Which?

As the new financial year approaches, savvy investors are looking for the best ways to grow their savings tax-free. Consumer group Which? has just released its highly anticipated 2025 rankings for stocks and shares individual savings account (ISA) providers. If you’re planning to invest your annual ISA allowance, this guide will help you choose the right provider for your needs.

What is a Stocks and Shares ISA?

A stocks and shares ISA is one of four types of ISAs available in the UK, alongside cash ISAs, lifetime ISAs, and innovative finance ISAs. As the name suggests, this type of ISA allows you to invest your savings in stocks, bonds, and funds, offering the potential for higher returns compared to traditional savings accounts.

The key benefit of a stocks and shares ISA is the tax-free growth on your investments. For the 2024/2025 tax year, the annual ISA allowance is £20,000, meaning you can save or invest up to this amount without paying tax on any interest, dividends, or capital gains. This allowance resets at the start of each new tax year on 6 April.

Which? 2025 Rankings: Top Stocks and Shares ISA Providers

Which? has evaluated and ranked the best stocks and shares ISA providers based on factors such as fees, customer service, investment options, and platform usability. Here are the key takeaways from their 2025 rankings:

1. Low Fees and Competitive Pricing
   Fees can significantly impact your investment returns, so it’s crucial to choose a provider with transparent and affordable charges. Which? highlighted providers that offer low annual management fees and no hidden costs.


2. Wide Range of Investment Options
   The top-ranked providers offer a diverse selection of stocks, bonds, and funds, allowing investors to build a well-rounded portfolio tailored to their financial goals.


3. User-Friendly Platforms
   Whether you’re a seasoned investor or a beginner, a user-friendly platform can make managing your investments much easier. Which? praised providers with intuitive interfaces, robust mobile apps, and helpful educational resources.


4. Excellent Customer Service
   Reliable customer support is essential, especially when dealing with complex financial products. The highest-ranked providers scored well for their responsive and knowledgeable customer service teams.

How to Choose the Right Stocks and Shares ISA Provider

When selecting a stocks and shares ISA provider, consider the following factors:

• Fees: Compare management fees, trading costs, and any additional charges.


• Investment Options: Ensure the provider offers the types of investments you’re interested in.


• Ease of Use: Look for a platform that suits your level of experience.


• Customer Reviews: Check independent reviews and ratings to gauge customer satisfaction.

Maximize Your Tax-Free Savings

With the new tax year starting on 6 April, now is the perfect time to review your savings and investment strategy. By choosing one of the top-ranked stocks and shares ISA providers from Which?’s 2025 list, you can make the most of your £20,000 annual allowance and enjoy tax-free growth on your investments.

Final Thoughts

Investing in a stocks and shares ISA can be a smart way to grow your wealth over the long term. With Which?’s 2025 rankings, you can confidently choose a provider that offers low fees, a wide range of investment options, and excellent customer service. Don’t miss out on the opportunity to maximize your tax-free savings this financial year!