A high-interest savings account is a bank or building society account that aims to pay more interest on your savings than a standard account. The rate is usually shown as AER, which helps you compare accounts, but it may be variable, introductory or dependent on regular deposits and withdrawal limits. Check whether you can access your money when needed, whether the provider is covered by the FSCS and whether interest could count towards your Personal Savings Allowance. Compare the full terms before applying, as the highest rate may not be the most suitable for your circumstances.