When a savings provider changes your rate

Savings rates move, and when they move downwards the first question most savers have is simple: did my provider have to warn me, and can I take my money somewhere else without being penalised? The short answer is that on a variable rate account your provider can cut your rate, but it must tell you first, and the notice period is set by a mix of regulatory rules and your own account's terms. If you have at least £500 saved, you must be given 14 days' notice of any material reduction in your rate, or of the end of a bonus or introductory rate¹.

The notice period itself varies widely between providers and products. Some give 14 days, some give 30 days, and some give two months. Notice accounts can require the longest warning of all, because the notice period for a rate reduction can be tied to the notice period for withdrawing money. Fixed rate accounts sit outside all of this: the rate is locked for the term and cannot be cut before maturity.

What a rate rise or a rate cut does to your savings

A rate cut reduces the interest your balance earns from the date the change takes effect, and on a variable rate account it applies to the whole balance, not just new deposits. A rate rise does the opposite. Either way, the amount of interest you receive changes even though the money you saved stays the same, which is why the notice rules matter: they exist to give you time to check whether the new rate is still competitive and, if it is not, to move your money.

Providers handle the two directions differently. NS&I, for example, states that if the interest rate on its Direct Saver goes down it will contact you personally at least 14 days before it takes effect, but that it will not contact you personally if the rate goes up². thisbank gives 14 days' notice of a reduction and will update you within 14 days of an increase³. So a rise can arrive quietly, and the first sign of it may simply be a larger interest payment. A cut, by contrast, must always be announced in advance.

The practical effect of a cut depends on the size of your balance and how long you leave the money in place. A cut of a fraction of a percentage point on a small balance changes the interest by only a few pounds a year, but the same cut on a large balance held for years compounds into a more noticeable sum. The compound interest page explains how that works. What matters after any cut is whether the new rate still matches what you could get elsewhere, and the switching accounts page sets out how to move.

Notice of a rate change: it depends on the product terms

There is no single statutory notice period for savings rate changes. What exists instead is a floor set by the regulator, which is that savers with at least £500 must be given 14 days' notice of any material reduction in rates or of the end of a bonus or introductory rate¹. On top of that floor, each provider sets its own terms, and those terms are what actually govern your account.

The range across the market is wide. Virgin Money's easy access E-Saver Issue 42 and Saver Issue 42 both promise at least two months' notice before a rate reduces⁷. Reliance Bank's notice savings account gives at least 14 calendar days' written notice of a rate decrease⁹. Monument gives at least 14 days' notice of any rate reduction on its Easy Access Savings account¹⁰, and Monmouthshire Building Society gives at least 14 days' notice on its Save And Support Account¹¹. Birmingham Bank goes further for notice accounts: it gives advance notice of at least the account's notice period, for example 95 days, plus an additional 14 days before a rate reduction takes effect¹².

AJ Bell's guidance on notice accounts notes the general principle behind the longer warnings: the notice period for a reduction in the rate will be as long as the notice period for terminating the savings account⁴. That is also why notice accounts, explained on the notice accounts page, tend to carry the longest notice rules in the market.

It is worth knowing that the statutory duty to spell out rate variations applies to borrowing, not saving. Under the Consumer Credit Act, a notice of variation must state the variation in the rate of interest, the amount of any payments after the variation, and any change in the number or frequency of payments¹³. For credit agreements, notice of a variation must be provided before the change takes effect, and the old seven day minimum was dropped in 2010 in favour of a requirement that notice simply precede the change¹⁴. Savings accounts are governed instead by the FCA's conduct rules and by the account's own terms, which is why the notice periods differ so much from provider to provider.

Can a provider lower your rate without telling you?

No, not on a variable rate account. Every provider's terms reviewed for this page commit to telling savers before a reduction takes effect. NS&I states plainly on its Direct Saver page: "If the rate goes down we'll also contact you personally in advance to let you know"¹⁶. Its Direct ISA and Junior ISA carry the same promise, with the rate variable and changeable up or down, for example when the Bank of England base rate changes or when rates in the general savings market change¹⁷.

The one asymmetry is on increases. Virgin Money's M Saver, M Plus Saver, M Power Saver and Club M Saver all state that a decrease brings at least two months' notice, but that the rate may be increased without notice¹⁹. So a provider can raise your rate silently, and some do. The protection runs in one direction: you will always hear about a cut before it bites, but you may need to check your account or statements to notice a rise.

Where to find your own account's rule is the summary box, the standardised panel of key information every savings provider must give you. The summary box page explains how to read one. If your provider has cut your rate without the notice its terms promise, that is a matter to raise with it directly and, if unresolved, with the Financial Ombudsman Service, covered in the final section of this page.

Fixed or variable: how each one behaves when rates move

A variable rate is, in StepChange's definition, "An interest rate that can go up or down. The amount is decided by the lender."⁵ A fixed rate is the opposite: it is locked for a set term and cannot be cut during it. That single difference drives most of the choice between the two.

The trade-off is access. MoneyHelper notes that fixed rate savings bonds usually pay a higher interest rate than instant access savings accounts, and that the longer you lock your money in, the higher the rate is likely to be²³. Which? reported a difference of more than a percentage point between the best easy access and top fixed rate deals²⁴. In exchange, your money is tied up: the fixed rate bonds page explains the terms and the fixed bond early withdrawal page covers what happens if you need the money sooner.

Which type tends to suit which circumstance is a matter of certainty versus flexibility. A fixed rate suits money you are confident you will not need for the term, and anyone who wants to know exactly what the return will be. A variable rate suits money that may be needed at short notice, and anyone willing to watch the rate and move if it falls behind. The easy access vs fixed rate comparison sets the two side by side.

Bonus and promotional rates that end on a set date

Many savings accounts attract customers with a bonus or promotional rate added to a lower standard rate for a set period. When that period ends, the bonus drops away and the account reverts to its standard variable rate, which can be far lower. This is not a rate cut in the ordinary sense, and it does not need a cut notice: the end date was fixed from the day you opened the account.

The rules still give you warning. The 14 day notice requirement for savers with at least £500 covers the end of a bonus or introductory rate as well as material rate reductions¹. Providers must also show you the effect in advance: where a rate reduction follows the expiry of an introductory, promotional or preferential rate, the FCA's rules require a projection of the account balance on the date the rate expires and a second projection on the first anniversary of that date²⁵. So the summary box should tell you both when the bonus ends and what the balance is projected to be at that point and a year later.

Promotional rates are common across the market. Which? reported a Revolut Instant Access Savings boosted rate for new customers running only until 4 December 2026²⁶. The FCA has also worked on making promotional rate expiry clearer across financial products, with implementation of promotional rate expiry remedies dating from April 2018²⁷. The dedicated bonus rates and savings promotions page covers how these offers work in detail.

When a fixed-rate account or ISA matures into easy access

A fixed rate account ends at maturity, and what happens next is where many savers lose money without noticing. Providers do not usually hold your money hostage: they move it into a follow on account, typically easy access, paying a variable rate that may be much lower than the fixed rate you had.

Providers state this in their maturity terms. Harrogate Building Society says that Fixed Rate ISAs opened from 10 October 2024 onwards, excluding one issue, will change to an Easy Access Cash ISA account at maturity²⁸. RBS automatically changes a 1 year or 2 year Fixed Rate ISA into an Instant Access ISA once the fix ends²⁹. Gatehouse Bank's Easy Access Cash ISA, available only to maturing ISAs, gives 30 days' notice of any reduction to the expected profit rate³⁰. Virgin Money's Easy Access Cash ISA Issue 32 gives at least two months' notice before the rate reduces³¹.

Once matured, the account behaves like any other variable rate account, and the notice rules in the earlier sections apply from then on. The fixed rate maturity page covers the whole process, including how to compare the follow on rate with the market before the term ends rather than after.

Moving a Cash ISA after a rate cut without losing the tax benefit

A rate cut on a Cash ISA raises a question an ordinary savings account does not: moving the money the wrong way destroys its tax free status. The rule is that money withdrawn from a Cash ISA loses that status unless it is transferred directly between ISA managers⁶. M&S Bank warns that if you withdraw the transfer amount yourself you lose the tax benefits of saving in an ISA, and putting the money back into another ISA counts towards your current year ISA allowance³². Nationwide says the same: do not just withdraw the money, because it will lose its tax free status; apply with the other provider instead³³. Skipton Building Society gives advance notice of rate reductions on its Cash ISA Saver where there is at least £100 in the account³⁴.

The transfer route is straightforward: you open the new Cash ISA and ask the new provider to arrange the transfer from the old one. The old provider may charge or require notice for a fixed rate ISA, although Virgin Money allowed transfers from a Fixed Rate ISA without notice or charges between 24 February 2026 and 1 June 2026⁶. The ISAs section page and the cash ISA vs ordinary savings page cover the wider choice.

The wider ISA landscape is also changing. The Building Societies Association has responded to government consultation on ISA reform, including anti circumvention rules around a reduced Cash ISA limit³⁵, and has argued that cutting the Cash ISA allowance is "all downside", undermining savings habits rather than encouraging investment³⁶. If the allowance is reduced further, the value of keeping existing ISA money inside the ISA wrapper by transferring, rather than withdrawing, only increases.

What protects you, and where it stops

Your protections around rate changes come in layers. The first is notice: the 14 day floor for savers with £500 or more¹, and whatever longer period your account's terms promise. The second is information: the summary box rules that require projections around expiring promotional rates²⁵, and the requirement that providers tell you what rate your account pays. The third is the right to move: on an easy access account you can withdraw and switch at any time, and the cooling off period page covers the short window after opening in which you can cancel outright.

Where protection stops is just as important. A fixed rate protects you from cuts but not from your own need for the money early. A bonus rate ending on schedule is not a breach of any rule. A maturing fixed account moving to a low variable rate is the provider doing what its terms said it would. And a rate cut that was properly notified, however unwelcome, gives you no grounds for complaint in itself.

One further rule with teeth concerns the Help to Save scheme. The government bonus on those accounts is paid at the end of the first 24 month bonus period and at the end of the maturity period, but the amount of a bonus is nil if the account is closed, or otherwise ceases to be a Help to Save account, before the end of a period in respect of which a bonus would otherwise be payable³⁷. Early closure can forfeit the bonus entirely, which the Help to Save and withdrawing from Help to Save pages cover in detail.

If a provider has broken its own rules, for example cutting a rate without the promised notice, complain to it first and then to the Financial Ombudsman Service, which can order redress. Free, impartial guidance is available from MoneyHelper. And whatever the rate, check that your money is within the FSCS deposit protection limit, explained on the FSCS protection page: any amount held above the limit is not protected if the provider fails.