Savings, ISAs and keeping your money safe

When you move to the UK, securing your savings safely and understanding tax-efficient ways to grow them are essential steps. This guide covers Individual Savings Accounts (ISAs), FSCS protection for your money, and how interest on your deposits is taxed—everything you need to make informed decisions about where to keep your money.

Understanding ISA Allowances

An ISA is a tax-wrapped savings or investment account that allows you to earn money completely tax-free. The government sets an annual limit on how much you can pay into ISAs each tax year (which runs from 6 April to 5 April). For 2026/27, that limit is £20,000. This allowance applies to your total savings across all ISA types combined, not to each one separately.

You can split your £20,000 allowance however you wish between a Cash ISA, Stocks and Shares ISA, Innovative Finance ISA, or Lifetime ISA (which has its own £4,000 cap that counts within the overall limit). For example, you might save £10,000 in a cash ISA and £10,000 in a stocks and shares ISA. Once you exhaust your allowance, you cannot save any more into ISAs until the next tax year begins on 6 April.

Only UK residents aged 18 or over can open an adult ISA. You must be a UK resident for tax purposes, though Crown employees and armed forces personnel serving overseas (and their spouses) can also open one. Each ISA must be held in your own name alone—you cannot have a joint ISA with a partner.

Who Can Open an ISA

• Age 18 or older
• UK resident for tax purposes (or qualifying Crown employee or armed forces member)
• Account must be in your name alone

Cash ISAs: Tax-Free Interest on Your Savings

A Cash ISA is a straightforward savings account where all the interest you earn is free from UK income tax. You can pay in up to £20,000 in the current tax year (or up to £12,000 from 6 April 2027 if you are under 65). Interest is earned on your balance and paid to you either monthly or annually, depending on the provider. Unlike some fixed savings accounts, many Cash ISAs offer instant or easy access to your money.

When you open a Cash ISA, you will be asked to provide your National Insurance number. This is a nine-digit reference number unique to you that HMRC (Her Majesty's Revenue and Customs) uses to track your tax and benefits. If you do not yet have a National Insurance number, you can apply for one at the UK government website. The bank will verify this information to ensure you meet the ISA eligibility criteria.

Easy-Access vs. Fixed-Rate Cash ISAs

Easy-access Cash ISAs let you withdraw your money at any time without penalty. Interest rates are typically variable, meaning they may go up or down depending on what the bank offers. Fixed-rate Cash ISAs lock your interest rate for a set period (usually one to three years) but often penalise early withdrawal with reduced interest or fees. Choose easy-access if you might need your money in an emergency; choose fixed-rate if you can commit your savings and want certainty.

The Lifetime ISA: A 25% Government Bonus for First-Time Buyers

The Lifetime ISA (LISA) is a special savings account designed to help you buy your first home or save for later life. If you open one, the government will add a 25% bonus to every pound you pay in, up to a maximum bonus of £1,000 per year. To earn this bonus, you can contribute up to £4,000 per year, which also counts toward your overall £20,000 ISA allowance.

To open a Lifetime ISA, you must be between 18 and 39 years old. You can continue to pay into it until you turn 50, at which point contributions and bonus payments stop (though your account stays open and can earn interest or investment returns). You can hold the money as cash or invest it in stocks and shares, depending on your provider.

Using Your Lifetime ISA for a First Home

Once your account has been open for at least 12 months, you can withdraw your savings and government bonus penalty-free to buy your first home, provided the property costs no more than £450,000 and you are buying with a mortgage. Both members of a couple can open a separate Lifetime ISA and use both bonuses toward the same property purchase.

If you withdraw for any other reason—such as an unexpected expense or if you decide to buy a more expensive property—the government will take a 25% charge on the full amount you withdraw (including your own contributions and the bonus). This penalty is applied to both your own money and the government bonus, which means you could receive less than you originally paid in.

FSCS Protection: Keeping Your Money Safe

The Financial Services Compensation Scheme (FSCS) is a UK government-backed safety net that protects your savings if your bank, building society, or credit union fails. As of 1 December 2025, the FSCS protects up to £120,000 per person per banking licence. This protection covers current accounts, savings accounts, and Cash ISAs.

The key phrase here is 'per banking licence', not 'per bank'. Many banking brands operate under a single shared licence, which means your protection is limited across all of them combined. For example, HSBC and First Direct share the same banking licence, so if you have £80,000 with HSBC and £50,000 with First Direct, only £120,000 of your combined £130,000 is protected—you would lose the extra £10,000.

Checking Which Banks Share a Licence

To find out which banks share a licence, you can search the Financial Conduct Authority's (FCA's) Financial Services Register or use the FSCS protection checker on the FSCS website. Some common shared licences include Halifax and Bank of Scotland (Lloyds Banking Group); HSBC, First Direct, and M&S Bank; and several others. By spreading your savings across genuinely separate banking groups, you can increase your overall protection.

Joint Accounts and Temporary High Balances

Joint accounts are treated differently for FSCS purposes. If you hold a joint account with a partner, you are each protected up to £120,000, meaning a couple can have up to £240,000 protected in a single joint account with one bank. There is also special protection for temporary high balances. If you receive a one-off large payment—such as proceeds from selling a home, an inheritance, a redundancy lump sum, or an insurance payout—the FSCS protects up to £1.4 million for six months from the date the money is credited to your account.

If a bank fails, the FSCS contacts you automatically using the contact details the bank has on file. Compensation is normally paid within seven working days. You do not need to register for protection or pay any fees; it is funded by a levy on regulated financial firms. Protection is automatic.

Personal Savings Allowance and Tax on Interest

Savings account interest is usually subject to UK income tax. However, the government provides a Personal Savings Allowance (PSA) that lets you earn a certain amount of interest each tax year without paying any tax on it. The size of your allowance depends on which income tax band you fall into.

• Basic-rate taxpayers: up to £1,000 tax-free interest
• Higher-rate taxpayers: up to £500 tax-free interest
• Additional-rate taxpayers: no allowance (all interest is taxed)

To work out which tax band you fall into, you add up all your income for the tax year (salary, pension, self-employed profit, etc.). If your total income is below £12,570 (the personal allowance), you pay no income tax at all. If it is between £12,570 and £50,270, you are a basic-rate taxpayer and receive a £1,000 PSA. Income between £50,270 and £125,140 makes you a higher-rate taxpayer with a £500 allowance. Income above £125,140 means you are an additional-rate taxpayer with no allowance.

Any interest above your Personal Savings Allowance is taxed at your marginal income tax rate: 20% for basic-rate, 40% for higher-rate, or 45% for additional-rate taxpayers. HMRC normally collects this tax by adjusting your PAYE tax code, so you do not need to file a Self Assessment return unless you are already self-employed or have other reason to do so.

The Starting Rate for Savings

If your total income (excluding savings) is less than £17,570, you may also qualify for a Starting Rate for Savings. This allows your first £5,000 of savings interest to be taxed at 0% (before your Personal Savings Allowance kicks in). This applies mainly to very low earners, pensioners, or those returning to work after time out of employment. The £5,000 starting rate is separate from your PSA, so a basic-rate taxpayer with no earned income could potentially earn up to £6,000 in savings interest tax-free (£5,000 at 0% plus £1,000 PSA).

How ISAs Interact with Tax

This is the crucial difference: interest earned inside an ISA is completely tax-free and sits entirely outside the tax system. It does not use up your Personal Savings Allowance, and you do not need to report it to HMRC. If you have £20,000 in a Cash ISA earning 4% interest (£800 per year), all £800 is yours to keep. In a standard savings account, that £800 would be reduced by tax.

For those with higher income or larger savings balances, an ISA becomes increasingly valuable. Higher-rate taxpayers in particular should prioritize ISAs, since they only get £500 of tax-free interest in regular savings accounts but unlimited tax-free growth in an ISA.

Getting Started: Opening Your Accounts

To open a Cash ISA or Lifetime ISA, you will need to be a UK resident (or meet the armed forces exception), be aged 18 or over, and have a National Insurance number. You can apply online with most banks and building societies; the application typically takes 10–15 minutes. You will need to provide your name, date of birth, National Insurance number, and UK address. Some providers ask for a minimum opening deposit (often £500), though many now allow you to start with as little as £1.

Once your account is open, you can add money whenever you like (up to your annual allowance). Many providers offer flexibility, allowing you to withdraw and replace money without losing your current-year allowance—but always check the terms, as some restrict this feature. Fixed-rate ISAs typically do not allow flexible withdrawals.

You can hold multiple ISAs with different providers, but your total contributions across all of them in a single tax year cannot exceed £20,000. It is your responsibility to track this limit; the banks do not enforce it centrally, so you could accidentally breach it if you are not careful.

Avoiding Scams and Protecting Your Savings

As a newcomer to the UK, be cautious of unsolicited offers promising unusually high interest rates on savings. Scammers sometimes create fake bank websites or send phishing emails asking you to 'confirm' your details. Never share your passwords or National Insurance number via email or text. If you receive a suspicious message claiming to be from your bank, do not click any links; instead, log in to your real bank account directly or call the number on the back of your bank card.

Stick to banks and building societies regulated by the Financial Conduct Authority (FCA). You can check a provider's regulation status on the FCA register. Remember that FSCS protection only applies to FCA-regulated firms. If you invest money with an unregulated provider and something goes wrong, you have no government safety net.

Review your account statements regularly and set up alerts for large transactions. Many banks offer two-factor authentication (using an app, text message, or security key) to add an extra layer of protection to your online banking login.

Key Takeaways

1. ISAs are tax-free savings or investment accounts with an annual allowance of £20,000 (dropping to £12,000 for cash ISAs for under-65s from April 2027).
2. Cash ISAs pay tax-free interest on your savings with flexible access; compare rates before you choose a provider.
3. The Lifetime ISA offers a 25% government bonus for first-time homebuyers and savers aged 18–39, but has strict withdrawal penalties.
4. Your savings are protected up to £120,000 per banking licence by the FSCS if your bank fails.
5. All ISA interest is tax-free and does not count toward your Personal Savings Allowance.
6. Interest above your Personal Savings Allowance is taxed at your marginal income tax rate (20%, 40%, or 45%).
7. Use the FSCS protection checker to verify which banks share a licence before spreading large savings.