Investment & Investing

I'm sure Which do a better summary than I can. They do a table showing the fees when you have £x000 invested. but I don't have the subscription to see that

https://www.which.co.uk/money/investing/investment-platforms-and-fund-supermarkets/investment-platforms-reviewed/interactive-investor-investment-platform-review-ahppn5R4m0Pk

Who is Interactive Investor good for?
Interactive Investor offers a cost-effective service for those with portfolios worth £50,000 or more, combining fixed fees with a respectable customer score. However, it's not among the highest-ranking platforms.

If you want to trade funds regularly and have a smaller portfolio, Interactive Investor may prove more expensive than most.

With its cheapest plan, Essentials for portfolios under £30,000, you can pay just £4.99 a month to hold your funds and shares with Interactive Investor, but you get no free trades as you would in their other plans. So, for investors who want to trade regularly, these costs will add up to make this option less worthwhile.

In this scenario, you might want to consider a platform with a percentage-based fee, such as AJ Bell or Vanguard.

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Who is Vanguard good for?
For those with portfolios worth less than £100,000, Vanguard's simple, percentage-based fees are the cheapest option for buying funds. It's also still one of the cheapest platforms for larger portfolios.

However, for portfolios holding more than £100,000, it's actually cheaper to hold Vanguard funds with a fixed-fee broker, like Interactive Investor or Halifax Share Dealing. For Vanguard ETFs, it would always be cheapest to hold them with InvestEngine who charge no fees at all.

As Vanguard only offers around 80 of its own funds, investors looking to buy other funds, investment trusts or company shares will have to look elsewhere.