A past NS&I rate may describe a prize fund, a variable account or a fixed-term bond, so compare the exact product, issue date and tax position before using it.
Reading NS&I historical interest rates correctly
A past NS&I percentage matters only when its rate type, meaning the rule behind that percentage, is clear. Premium Bonds use a prize fund rate, Income Bonds pay a variable interest rate, and Guaranteed Growth Bonds use a fixed contractual rate for a stated term.
Is an old NS&I rate still available?
An historic rate is available only if NS&I still sells that exact product or issue. A closed issue is an older version of a bond that existing holders may own but new customers cannot open.
Which date applies to your money?
The effective date, not merely the announcement date, tells you when a new variable rate begins. Premium Bonds are different again: a change takes effect from a named monthly prize draw.
Three labels, three meanings: a prize fund rate funds Premium Bonds prizes; an AER shows the yearly effect of interest on a variable account; a fixed rate is the contractual rate for a stated bond term. They should not be ranked as though they promise the same result.
Which date and rate applies to your NS&I account?
Your account is governed by its own product terms, issue and effective date, not by the highest rate NS&I paid in a previous year.
A variable rate can be announced first and applied later. The account terms set how NS&I tells customers and when interest changes, so the announced figure may not yet apply to your balance.
A fixed-rate savings bond locks the stated interest rate for its term, often between one and five years. In return, access is normally restricted until maturity, unless the terms allow an early exit or the holder dies.
Premium Bonds, Income Bonds and fixed bonds
Premium Bonds, Income Bonds and fixed NS&I bonds pay in different ways, so one headline percentage cannot tell you which is better.
A 4.65% prize fund rate did not mean £10,000 in Premium Bonds earned £465 for every holder. Some people won nothing, while a small number won much more than that amount.
| Product | What the published rate means | Access to money | Tax position |
|---|
| Premium Bonds | Prize fund rate, not individual interest | Usually withdrawable, subject to processing time | Prizes are tax-free |
| Income Bonds | Variable interest rate | Withdrawals normally allowed | Interest may be taxable |
| Guaranteed Growth Bond | Fixed rate for that issue and term | Normally held to maturity | Interest may be taxable |
| Cash ISA | AER, fixed or variable by account | Depends on ISA terms | Interest is tax-free |
Income Bonds and taxable interest
Income Bond interest can be subject to income tax on savings interest. The Personal Savings Allowance lets basic-rate taxpayers earn up to £1,000 of savings interest tax-free, higher-rate taxpayers up to £500, and additional-rate taxpayers receive no allowance.
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A basic financial calculator can help test gross interest, tax due and the return needed from Premium Bonds to match a guaranteed account. It is most useful when comparing several balances and tax bands.
- Shows the cash difference between 3%, 4% and 5% over one to five years
- Helps separate monthly income payments from interest left to compound
- Makes Personal Savings Allowance checks easier before choosing a Cash ISA
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A simple after-tax calculation can change the comparison. If £10,000 earns 4.50% for a full year, the gross interest is £450. A basic-rate taxpayer with enough unused Personal Savings Allowance may keep all £450, whereas a higher-rate taxpayer who has already used their allowance would retain £270 after 40% tax. That is a net return of 2.70% on the original £10,000.
By contrast, a Cash ISA paying 4.00% would produce £400 tax-free. Check whether an AER savings account compounds interest or pays it away, because AER reflects annual compounding only when interest remains in the account.
NS&I rate history: a five-year timeline
A reliable NS&I timeline labels the product and type of percentage rather than pretending every rate is comparable.
| Year | Product and change | Rate and measure | When it applied | Source |
|---|
| 2022 | Premium Bonds prize fund increase | 3.00%, prize fund rate | December 2022 draw | NS&I announcement |
| 2023 | Premium Bonds peak in this period | 4.65%, prize fund rate | September 2023 draw | NS&I announcement |
| 2024 | Premium Bonds rate reduction | 4.40%, prize fund rate | March 2024 draw | NS&I announcement |
| 2025 | Premium Bonds rate reduction | 4.00%, prize fund rate | January 2025 draw | NS&I announcement |
| 2026 | Current products and legacy issues | Check live rate and issue terms | Depends on product date | NS&I product page |
How to read the five-year record
2022
Rising prize rates
2023
4.65% prize-rate peak
2024
4.40% prize rate
2025
4.00% prize rate
2026
Check live terms
Blue blocks show Premium Bonds prize-rate milestones only. They are not a line chart for Income Bonds or fixed bonds, which use different measures.
The 4.65% figure is a historic Premium Bonds prize fund rate, not a promise that the rate will return. It also cannot tell you whether a fixed bond issued in 2023 remains suitable at its next maturity.
The source behind each date
The official source should state both the announcement date and the effective draw or account date. If a table does not show those two dates, treat it as a prompt to verify.
Fixed-rate history needs to be read issue by issue rather than as one continuous NS&I rate. For example, NS&I placed a one-year Guaranteed Growth Bond on sale at 6.20% gross/AER in October 2023, during the period when fixed-rate savings bonds were particularly competitive. That was the contractual return for that specific issue and term, not a rate that every existing NS&I customer received or a permanent benchmark for later bonds.
Once a fixed issue closes, it becomes a closed bond issue for new money; holders should use its issue number, maturity date and renewal notice when comparing it with a current replacement.
Bank of England rate movements provide useful background, but they are not an automatic formula for NS&I savings rates. Bank Rate rose sharply through 2022 and 2023, reaching 5.25% in August 2023, a period that coincided with higher rates across much of the savings market and the 2023 fixed-bond peak. It later began to fall in 2024.
NS&I still sets product rates according to its own funding remit, market conditions and product mix, so a Bank Rate change may be followed by an NS&I change, delayed, or not reflected equally across Premium Bonds, Income Bonds and fixed-rate products.
Check your bond issue and renewal date
Before renewing, find the exact NS&I issue, maturity date and replacement terms shown in your account or correspondence.
A five-point maturity check
- Confirm the issue: match the exact Guaranteed Growth Bond or Guaranteed Income Bond issue number.
- Check the date: note the maturity date and any deadline for instructions.
- Read the renewal offer: it may be a different term and rate from the original bond.
- Compare after tax: apply your Personal Savings Allowance before comparing taxable interest with a Cash ISA.
- Check access: keep emergency cash outside a bond that restricts withdrawals.
A taxable account paying 4.50% does not always beat a Cash ISA paying 4.00%. If a higher-rate taxpayer has already used their £500 Personal Savings Allowance, £1,000 of taxable interest may leave roughly £800 after 40% tax, equivalent to 4.00% on £20,000.
Historic-rate comparisons are not the right starting point if you need immediate access to all your money, have expensive debt, or are investing for long-term growth rather than holding cash. They are also unnecessary if you already know the exact issue and only need to confirm its current rate in your NS&I account.
Your questions answered
Are NS&I historical interest rates still useful?
NS&I historical rates are useful for context, but they do not confirm today’s available rate. Match the product, issue and effective date before acting.
Was the 4.65% Premium Bonds rate guaranteed?
No, the 4.65% Premium Bonds prize fund rate was not guaranteed interest for each holder. It applied to the September 2023 prize draw and individual returns varied.
What is the interest rate on NS&I Income Bonds?
The NS&I Income Bonds rate is variable and must be checked on the current product page. Interest is usually paid monthly and may be taxable above your Personal Savings Allowance.
Can I still get an old NS&I fixed-bond rate?
You can keep an old fixed rate only while your specific bond remains within its original term. Closed issues are normally unavailable to new customers.
Are Premium Bonds better than a Cash ISA?
Premium Bonds can suit people who accept uncertain returns for tax-free prize potential. A Cash ISA usually suits people who want known tax-free interest and have ISA allowance available.
Should I renew an NS&I bond automatically?
Do not renew automatically until you compare the replacement rate, term and access rules. Check your maturity instruction before the stated deadline.
Does NS&I have FSCS protection?
NS&I money is backed by HM Treasury rather than covered by the standard FSCS compensation limit. Commercial bank and building-society savings normally rely on FSCS protection up to its applicable limit.
Choose on today’s terms, not past rates
A historic NS&I rate is evidence of what happened, not a recommendation for what to hold now.
What matters most:- Premium Bonds prize fund rates describe the prize pool, not a guaranteed return on your own balance.
- Income Bonds, fixed bonds and Cash ISAs need separate comparisons because their access, certainty and tax treatment differ.
- Announcement dates are less useful than the date a rate or prize draw actually applies.
- Before maturity, identify your exact issue and compare the renewal offer after tax rather than renewing by habit.
Further reading
If you want to learn more about this topic, these sources may interest you:
