How a savings account works

A savings account is a place to put money aside rather than spend it. People use savings accounts to put away money for the future, for emergencies, or to buy expensive purchases. The core offer is simple. You deposit money with a bank, building society, credit union or the government's own savings provider, and in return the provider pays you interest on the balance.

Savings accounts come in many forms, and the differences between them matter more than many people realise. Some let you take money out at any moment, some require notice, and some lock your money away for a fixed period in exchange for a rate that will not change. Credit union savings accounts either pay interest or a share of any profits¹. Whatever the type, every savings account sold in the UK must come with a summary box setting out its key terms, so you can compare accounts on the same information.

Money held with a regulated provider is protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per person, per authorised firm². That limit, and how it works across accounts and institutions, is covered in full below.

What a savings account is and what it offers

A savings account does one job: it holds money you do not need to spend right now and pays you something for holding it. The distinction from a current account is the practical starting point. A current account is for everyday money, while a savings account keeps money you are setting aside separate from your spending money⁷. Keeping the two apart is one of the simplest habits that helps people build savings, because money in a current account is easy to spend without noticing.

What a savings account offers depends on the type. An easy access account lets you withdraw whenever you like, which is why debt advisers recommend instant access accounts for emergency savings: money for a broken boiler or a sudden bill needs to be reachable immediately⁸. At the other end, fixed-term accounts pay a rate that is locked in, but the money is committed for a set period. In between sit notice accounts, which require you to give a set period of notice before withdrawing.

Savings accounts are offered by several kinds of provider. Banks and building societies are the most familiar, and the differences between them are explained in what a building society is. Credit unions also offer savings accounts, which either pay interest or a share of any profits, and money in a credit union account is protected in the same way as bank deposits, up to £120,000 per person¹. The government's own savings provider, NS&I, offers accounts backed by the Treasury, described in NS&I accounts and bonds.

There are also accounts designed for particular circumstances. Help to Save is a government-backed savings account for people on certain benefits, which pays a bonus on savings, and is covered in Help to Save. Child Trust Funds were long-term tax-free savings accounts for children born between 1 September 2002 and 2 January 2011⁹. For children saving today, children's savings accounts work in much the same way as adult ones, with some tax rules of their own.

How interest is earned, calculated and paid

Interest is the payment you receive for letting the provider hold your money. The provider uses deposits to lend and invest, and passes part of the return to savers as interest. How that interest is worked out and when it lands in your account varies between accounts, and both things affect what you actually earn.

On a monthly interest savings account, interest is worked out each day¹⁰. The account then pays interest on your balance at regular monthly intervals instead of once a year¹⁰. Monthly interest suits people who want the interest as income, for example to supplement a pension, while annual interest, paid once a year, is the default on many accounts. Where interest is paid into the same account, it adds to the balance and then earns interest itself, which is compound interest.

UK rules require every savings account to come with a summary box, and that box must state the rate or rates of interest that apply, an explanation of the circumstances in which different rates apply, details of any reference rate the account tracks, and the times at which interest payments are calculated and credited¹¹. If an account pays a bonus rate for a limited period, or a different rate above a balance threshold, the summary box must say so. Reading the summary box before opening an account is the quickest way to see what you will actually be paid: see reading a savings summary box.

Rates themselves are described in standard ways: gross, AER, fixed or variable. These terms are explained in AER, gross and fixed or variable rates. Variable rates can change, and providers must tell you when they do, which is covered in when a savings provider changes your rate. Rates across the market also move in response to the Bank of England's base rate, explained in how the base rate affects savings.

Easy access, notice or fixed term: how each one behaves

The three main shapes of savings account differ on one question: when can you get your money back? The answer drives both the rate you are offered and what the account is sensible to use for.

Easy access accounts are the standard choice for an emergency fund. StepChange, the debt charity, advises using an instant access account for emergency savings so the money is there when an unexpected cost arrives⁸. NS&I's Direct Saver is an example of the type: an easy access savings account that pays interest yearly, to top up your savings¹³. Some easy access accounts carry conditions in the small print, such as limits on the number of withdrawals or temporary bonus rates that fall away after an introductory period, so the headline rate is not always the rate you keep¹².

Notice accounts sit between the two. You can withdraw, but only after giving the notice period the account requires, such as 60 or 120 days. The trade-off is a rate that is often higher than easy access, without locking the money away entirely. The rules on early withdrawal are covered in the penalty for withdrawing early from a notice account.

Fixed-term accounts, often called fixed-rate bonds, pay a rate that does not change for the term. The catch is access: money is normally committed until maturity, and early withdrawal is usually not allowed at all, as explained in can you take money out of a fixed-rate bond early?. Because the rate is fixed, these accounts protect you from rate falls, but not from rate rises. The comparison is drawn out in easy access vs fixed-rate savings.

Whatever the type, the summary box must explain how money may be withdrawn from the savings account, including any conditions or consequences for making withdrawals, and, for fixed-term savings accounts, an explanation of what happens at the end of the fixed term¹¹. Regular savings accounts, which require a deposit each month up to a limit, are another variant, covered in regular savings accounts and compared in regular saver vs easy access.

Cash ISAs: savings interest free of tax

A cash ISA is a savings account with one special feature: the interest it pays is free of income tax. ISAs, or Individual Savings Accounts, are a way to save money tax free¹⁴, and a cash ISA works like a tax-free savings account¹⁴. The legal basis is that individuals can save through ISA accounts without being taxed on any income or gains arising from those savings¹⁵. ISAs were introduced in 1999¹⁵, and the range now includes cash ISAs, stocks and shares ISAs, the Lifetime ISA, introduced from 6 April 2017¹⁶, and the Innovative Finance ISA, established from 6 April 2016¹⁷.

The headline rule is the allowance. You can deposit up to £20,000 each tax year across your ISAs, and you can split that £20,000 allowance across multiple types of ISA¹⁸. The annual subscription limit will remain at £20,000 until April 2031⁴. Two rules catch people out. You cannot carry over unused ISA allowance into the next tax year, and your allowance resets every 6 April¹⁹. You can open as many different adult ISA accounts as you like, as long as you keep within the ISA allowance rules¹⁹.

Whether a cash ISA is worth using depends on your tax position. Most people pay no tax on their savings interest at all, because of the allowances covered in the next section, in which case an ordinary savings account paying a higher rate may leave them better off. The comparison is set out in cash ISA vs ordinary savings. For people with larger savings, or whose interest exceeds their allowances, the tax-free wrapper has real value, and fixing a cash ISA rate before the April 2027 change is one option savers with larger balances have been considering²¹.

Tax on savings interest and the Personal Savings Allowance

Interest earned in an ordinary savings account counts as income for tax purposes, but most savers pay nothing. The Personal Savings Allowance lets basic rate taxpayers earn a set amount of savings interest each year tax free, with a smaller allowance for higher rate taxpayers, and the starting rate for savings adds further tax-free room for people on low incomes. How these allowances stack up, and how they interact with the personal allowance, is covered in how tax on savings interest works, the personal savings allowance and the starting rate for savings.

If interest does exceed your allowances, you pay tax on any interest over your allowance at your usual rate of Income Tax²². How the tax is collected depends on how you pay tax generally. For people who are employed or get a pension, HMRC will usually collect the tax through your tax code²². If you are registered for Self Assessment, you report any interest earned on savings there instead²². Scottish taxpayers have different income tax bands, which is covered in tax on savings interest for Scottish taxpayers.

Interest earned inside a cash ISA never counts for these purposes, which is the whole point of the wrapper. Interest earned by children has its own rule, the £100 rule, where interest above £100 from money given by a parent is taxed as the parent's income: see tax on children's savings. If you think you have overpaid tax on savings interest, you can reclaim it, as explained in reclaiming tax paid on savings interest, and certificates of interest and savings tax statements explains how to get a record of what you have been paid.

How to open a savings account and move your money

Opening a savings account is usually straightforward: many providers run the whole process through an app or online, while others take applications in a branch or over the phone. What you need to open an account, document by document, is set out in how to open a savings account.

Once the account is open, the habit that builds savings is moving money into it regularly. Independent advice organisations suggest two steps: open a savings account so you keep savings separate from your spending money, and set up a standing order to move money into your savings account each month⁷. National Debtline gives the same advice in practical terms: set up a standing order with your bank, so that your money can be transferred automatically every month from your current account to your savings account²³. Saving a small amount regularly, even a few pounds a week, is what credit unions and support charities encourage, because the habit matters more than the size of the deposit.

Moving money between savings accounts is not always automatic. Savings accounts cannot usually be moved automatically, and you may need to speak with your bank to arrange this²⁴. Unlike current accounts, there is no seven-day switching guarantee for savings, so moving savings means opening the new account, transferring the money and closing the old one yourself. The steps are set out in how to move savings to a new account.

Two things are worth checking before moving money. First, whether the old account has a withdrawal condition, such as a notice period or a fixed term, that could delay the transfer or trigger a penalty. Second, whether the new provider shares a banking licence with one you already use, because that affects FSCS protection, as the next section explains. Some accounts also come with a cooling-off period, covered in cooling-off periods on savings accounts.

FSCS protection: up to £120,000 per person

Money held with a UK-regulated bank, building society or credit union is protected by the Financial Services Compensation Scheme. FSCS gives you automatic protection up to £120,000 if your bank, building society or credit union fails³. The limit is per person, per authorised firm: it applies to the total of your eligible deposits across all the accounts you hold with that one institution, not to each account separately²⁵. Before 1 December 2025 the limit was £85,000²⁶.

The limit rose from £85,000 to £120,000 on 1 December 2025²⁶. NS&I describes the protection as normally up to the value of £120,000 per person²⁷, and the Consumer Council for Northern Ireland states the same figure: savings and current accounts are protected up to £120,000 per person, per institution²⁸.

Joint accounts are treated differently, and better. Each account holder is protected in their own right. FSCS protects each of you, whatever the number of account holders, up to £120,000 in total across all accounts you hold with that institution²⁵. For a two-person joint savings account, that means coverage of £240,000 in total²⁶. Joint accounts are covered in more detail in joint savings accounts and FSCS cover on joint savings accounts.

Where protection stops matters as much as where it applies. The limit is per authorised firm, so two brands that share one banking licence share one £120,000 limit between them. If you hold £80,000 with one brand and £80,000 with another brand owned by the same licensed firm, only £120,000 of the £160,000 is protected. You can check which providers share a licence using FSCS's own protection checker²⁹, and the rules are explained in how FSCS protection works for savings, what happens to money above the FSCS limit and who is not covered by FSCS deposit protection. Money temporarily above the limit, for example after a house sale, may have separate protection for a limited period: see temporary high balance protection.

Credit union savings are protected on the same terms: FSCS protects up to £120,000 in total across all accounts you hold with the credit union³⁰. NS&I is different again, because its products are backed by the Treasury rather than FSCS, which is explained in NS&I accounts and bonds. If a provider does fail, FSCS aims to return protected money quickly, and the steps to expect are described in what to do if your bank goes out of business²⁶.

Where to get help if something goes wrong

Several kinds of problem have several kinds of remedy, and knowing which door to knock on saves time.

Complaints about a provider. If a savings provider has treated you badly, for example by applying a charge incorrectly or giving wrong information about a rate, complain to the provider first. It must respond within a set time. If you are not satisfied with the answer, you can take the complaint to the Financial Ombudsman Service, which is free and rules on individual savings accounts as well as other products¹⁴. The general process is covered in consumer protection in UK financial services.

Problems with an ISA. The Financial Ombudsman Service can help with complaints about individual savings accounts, including cash ISAs¹⁴. If an ISA has been badly administered, for example a transfer between providers went wrong, the ombudsman can look at whether you lost out as a result.

Lost and unclaimed accounts. Accounts can be forgotten, especially those opened for children. Child Trust Funds are the biggest example: around 2,333,000 accounts matured between September 2020 and April 2024 as the oldest children turned 18, of which around 1,662,000 were claimed or automatically transferred³¹. Around a further 415,000 accounts matured during the tax year 2025 to 2026 and were claimed or automatically transferred³². People aged between 16 and 18 can visit MoneyHelper for information about their Child Trust Fund³³. For lost NS&I savings and Premium Bonds, see how to trace lost NS&I savings.

Help with saving on a low income. If money is tight, free help exists. Help to Save is a government scheme paying a bonus on savings for people on certain benefits, and withdrawals are flexible: you can withdraw the money from your savings at any time and it will be paid into your bank account³⁴. The scheme is explained in Help to Save, with withdrawals in withdrawing from Help to Save and the end of the account in when a Help to Save account ends. Debt charities such as StepChange and National Debtline give free advice on building an emergency fund alongside debt repayments⁸, and the comparison between saving and clearing debt is set out in paying off debt or building savings first.

Scams. Fake savings accounts and bogus bonds are a known scam pattern, where fraudsters impersonate real providers to take deposits. How these scams work, and what chance you have of getting money back, is covered in savings and fake bond scams and the wider scams and fraud guide.

Free, impartial guidance. MoneyHelper, the government-backed money guidance service, provides free help on banking and savings questions, including tracing accounts and understanding protection³³. It does not sell anything, and it is the right first stop for a question that does not need regulated financial advice.