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Fixed Interest Savings Certificates

Maximise your tax-free savings opportunities

Fixed Interest Savings Certificates are lump sum investments that earn guaranteed rates of interest over set periods of time, called 'terms'. They're free of UK Income Tax and Capital Gains Tax, whatever rate you normally pay. You don't even need to declare the interest on your tax return.

As part of our commitment to the Banking Code, we’ve included a summary box below to help you compare this investment with those from other providers.

Summary box: key product information

Account name

NS&I Fixed Interest Savings Certificates

Interest rates (AERs)

Fixed for set terms – see interest rates

Tax status 

Tax-free

Conditions for bonus payment

Not applicable

Withdrawal arrangements

Can be cashed in early, but no interest paid if cashed in within first year

Access

Apply online, by phone, at a Post Office® or by post; cash in by post

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Benefits

  • Tax-free
  • Guaranteed returns
  • Choice of terms

Investor’s guide

Security