NS&I has boosted the rates of its British Savings Bonds to up to 4.69% AER and has launched new issues of one, two, three and five year fixed-rate bonds and a new Issue of 3-year fixed-term Green Savings Bonds.
British Savings Bonds are fixed-term Issues of NS&I’s Guaranteed Growth Bonds and Guaranteed Income Bonds.
NS&I said today’s rate increases reflect changes in the wider market and will help it to meet its Net Financing target while continuing to balance the interests of savers, taxpayers and the broader financial services sector.
The interest rate on the 1-year Growth option has climbed to 4.69% gross/AER from 4.5%. The rate on the Income option has been increased to 4.6% gross/4.69% AER from 4.41% gross/4.5% AER.
The new interest rate on the 3-year Growth option is 4.65% gross/AER, and the Income option is 4.56% gross/4.65% AER.
The new interest rate on the 5-year Growth option is 4.55% gross/AER, and the Income option is 4.46% gross/4.55% AER.
Andrew Westhead, NS&I retail director, said: “We regularly review our products to ensure they reflect current market conditions, and today’s increases respond to changes in the fixed-term savings market.
“Our fixed-rate Bonds offer savers the choice of different term lengths with the certainty of knowing the interest rate they will receive over the full term, alongside the reassurance that all money invested with NS&I is 100% secure, backed by HM Treasury.”
British Savings Bonds (GGB and GIB) are available to customers wanting a guaranteed interest rate for fixed terms of 1, 2, 3 or 5 years. Funds cannot be withdrawn early with fixed-term accounts. Savers will need a minimum investment of £500 and can invest a maximum of £1 million per person in each Issue. After the fixed-term period, savers will have the choice to withdraw their cash or reinvest into a new term.
The new Issue of Green Savings Bonds is on sale with immediate effect and pays 4.45% gross/AER fixed-rate over a 3-year fixed-term.
The minimum investment in Green Savings Bonds is £100, with a maximum limit of £100,000 per person for each Issue. Investors need to be aged 16 or over to purchase the Bonds. The full amount deposited will be held for three years and cannot be withdrawn during this time.
Green Savings Bonds are used alongside gilts to raise funds for green projects as part of the UK Government Green Financing Framework, which was updated in November 2025 to include nuclear energy projects.
The amount of annual funding required through Green Savings Bonds is agreed between HM Treasury and NS&I, alongside gilts issued by the Debt Management Office (DMO), as part of the Government’s Green Financing Framework.
New interest rate product summary: source NS&I
British Savings Bonds
Product | Previous interest rate (from 28 April 2026) | New interest rate from 23 June 2026 (on general sale) |
Guaranteed Growth Bonds 1-year (Issue 90) | 4.50% gross/AER | 4.69% gross/AER |
Guaranteed Income Bonds 1-year (Issue 90) | 4.41% gross/4.50% AER | 4.60% gross/4.69% AER |
Guaranteed Growth Bonds 2-year (Issue 78) | 4.48% gross/AER | 4.67% gross/AER |
Guaranteed Income Bonds 2-year (Issue 78) | 4.40% gross/4.48% AER | 4.58% gross/4.67% AER |
Guaranteed Growth Bonds 3-year (Issue 80) | 4.45% gross/AER | 4.65% gross/AER |
Guaranteed Income Bonds 3-year (Issue 80) | 4.37% gross/4.45% AER | 4.56% gross/4.65% AER |
Guaranteed Growth Bonds 5-year (Issue 72) | 4.40% gross/AER | 4.55% gross/AER |
Guaranteed Income Bonds 5-year (Issue 72) | 4.32% gross/4.40% AER | 4.46% gross/4.55% AER |
Green Savings Bonds
Product | Previous interest rate (from 8 April 2026) | New interest rate from 23 June 2026 (on general sale) |
Green Savings Bonds (3-year fixed-term) (Issue 9) | 3.82% gross/AER | 4.45% gross/AER |