Can I only choose from over 60s accounts if I am over 60?

No. Over 60s can open the same savings accounts as other savers in the wider market.

Do I need to pay tax on the interest I earn?

This will depend on the type of account and your personal savings allowance (PSA). If you're a basic rate taxpayer, the personal savings allowance means you can earn up to £1,000 a year in savings income, tax-free. If you're a higher-rate taxpayer, you can earn up to £500 a year. You'll need to pay tax on anything over this. However, if you save in an ISA, any interest you earn is completely tax-free – it doesn't count towards your PSA allowance.

How many savings accounts can I have?

You can have as many savings accounts as you wish, which means you can have different types of savings accounts for different purposes. You can compare a range of savings accounts here.