Just like the name suggests, moneysupermarkt.com is a website that focuses on money matters. The sites works by providing information about the different cash ISAs offered by different companies in the market. However, it starts by giving information about the companies it can assist you open accounts with and if you are not satisfied, they offer information about ISAs from other companies. Accounts are listed according to their interest rates. That is; from the highest to the lowest. Their guide assists you in determining the best cash ISA rates that can benefit you.