What interest rate does the NS&I Green Savings Bonds pay?

The NS&I Green Savings Bonds pays 4.45% AER, fixed for 3 years.

How much interest could I earn?

Saving £10,000 for 3 years would earn about £1,395 at 4.45% AER. This assumes the rate stays the same and interest stays in the account.

How much can I pay in?

You can deposit at least £100 and up to £100,000.

Can I withdraw my money?

No. Your money is locked in until the fixed term ends, so only put in what you won't need before then.

When is interest paid?

Interest is paid at the end of the term.

Who can open this account?

New and existing NS&I customers can open it. You can open it online.

Is my money protected?

Yes. NS&I is backed by HM Treasury, so every penny is guaranteed. It isn't part of the FSCS, so the £120,000 FSCS limit doesn't apply.

How does it compare with other three-year fixed rate bonds?

At 4.45% AER it ranks 34th of 48 three-year fixed rate bonds we track. The best pays 5.18% and the average is 4.68%.

Dashboard

Fixed Rate

NS&I Green Savings Bonds Review

A three-year fixed rate bond from NS&I. It ranks 34th of 48 three-year fixed rate bonds we track.

Rate checked Oct 2026Got this account? Leave a review

Fixed rate · 3 years

4.45%AER

Rate checked Oct 2026Got this account? Leave a review

Protection

100% backedby HM Treasury

Min balance

£100

Max balance

£100,000

Access

At maturity only

Interest paid

On maturity

How It Stacks Up

Ranks 34th of 48

3-year fixed bonds we track

Below average

This account 4.45%

UK CPI (Aug 2026): 3.10%; Pays 1.35% more
Average 3-year fixed: 4.68%; Pays 0.23% less
Best 3-year fixed: 5.18%; Pays 0.73% less

Inflation: ONS. Averages and best rates: accounts on DepositScout.

Compare fixed bonds

Pros and cons

Pro: New and existing savers
Con: Your money is locked in for 3 years

Please verify all details with the provider – see our Disclaimer

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Estimated returns with NS&I's Fixed Rate

What you could earn with NS&I's Green Savings Bonds.

Estimated interest

£1,000 saved

£140

At 4.45% AER

£5,000 saved

£698

At 4.45% AER

£10,000 saved

£1,395

At 4.45% AER

£100,000 saved

£13,953

At 4.45% AER

Estimated over the 36-month term, if the rate stays the same and interest is left in. Amounts outside the account's minimum or maximum aren't shown.

Work out the tax on your interestSee how much of this interest could be taxed.

Our Expert Opinion on NS&I Green Savings Bonds

Jonny PeaseCo-Founder, DepositScout

NS&I Green Savings Bonds pay 4.45% fixed over three years, which beats August 2026 CPI of 3.1% by 1.35%, but the rate sits below the market average for fixed-rate bonds and trails the category leader by 0.90%. The green label appeals to savers who want their money funding environmentally focused projects and value NS&I's government backing, but the rate is not the draw. The hard catch is no access until maturity, and if rate is your priority, Afin Bank's 3-Year Fixed Term Account offers 4.86%.

Compare Fixed Rate Bonds

2 alternatives to NS&I's Green Savings Bonds3 alternatives to NS&I's Green Savings Bonds

Same type of account, closest on rate.

Common questions about the Green Savings Bonds

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