Interest from a standard high-interest savings account is taxable, but you may have a Personal Savings Allowance: £1,000 for basic-rate taxpayers, £500 for higher-rate taxpayers and £0 for additional-rate taxpayers. Some non-taxpayers may also qualify for a starting rate for savings, potentially covering up to £5,000 of interest depending on their other income. Banks usually pay interest without deducting tax, and HMRC may collect any tax due through your tax code or Self Assessment. Interest from an ISA is generally tax-free; check GOV.UK or speak to a tax adviser about your circumstances.