Joint Savings Accounts UK: Best Rates and the Tax Split Explained
Joint savings accounts split interest 50/50, so a couple can use two Personal Savings Allowances on one pot. Best joint rates checked 20 October 2026, the £40,000 worked example, £240,000 FSCS cover and the traps to avoid.
TL;DR
- Verdict: on our checks on 20 October 2026, the best joint savings account for most couples is the one that uses both tax allowances, not just the highest headline rate. A joint account splits interest 50/50, so two basic-rate taxpayers can earn £2,000 of interest a year with no tax to pay.
- Best joint easy access: cahoot Sunny Day Saver at 5.00% AER, but only on the first £3,000. Best joint fixed rate: Close Brothers 5 Year Fixed Rate Bond at 5.35% AER (minimum £10,000). Best joint regular saver: Co-operative Bank at 7.00% AER (up to £250 a month, current account holders only).
- Cost of doing nothing: £40,000 left in an old joint account paying 1.00% earns £400 a year. The same money at 5.00% earns £2,000. The gap is £1,600 a year.
- Safety: a two-holder joint account is protected up to £240,000 by the FSCS (£120,000 per person).
By Emily Harrington. Published 20 October 2026. Last checked: 20 October 2026. This is general information, not financial advice.
A joint savings account is one account with two names on it. Both of you can pay in. Both of you can take money out. It suits a shared goal: a house deposit, a wedding, a holiday, or a joint emergency fund.
The part most guides skip is the tax. Interest on a joint account is split in half for tax, whoever paid the money in. That split can save a couple real money. This guide covers the best rates we checked today, the tax split with a worked example, and the traps to watch for.
What is the best joint savings account in the UK?
The best joint savings account depends on how you will use the money. For money you may need soon, the cahoot Sunny Day Saver pays 5.00% AER on up to £3,000. For money you can lock away, Close Brothers pays 5.35% AER fixed for five years. For saving month by month, the Co-operative Bank regular saver pays 7.00% AER on up to £250 a month.
Here are the best joint accounts we checked on 20 October 2026. Every rate is from the provider or a checked best-buy table, and any limit on the rate is in the table row itself, not hidden in a footnote.
| Account | Rate (AER) | Minimum | Access | The limit in plain words |
|---|---|---|---|---|
| cahoot Sunny Day Saver (easy access) | 5.00% variable | £1 | Easy access, take money out any time | The 5.00% is paid only on the first £3,000. At most you earn £150 interest a year. The account lasts 12 months, then your money moves to a low-rate cahoot account. |
| Close Brothers 5 Year Fixed Rate Bond | 5.35% fixed | £10,000 | No withdrawals during the 5-year term | Your money is locked for five years. Check the term suits you before you apply. Rate checked on the Close Brothers site on 20 October 2026. |
| GB Bank 150 Day Notice Account | 4.38% variable | £1,000 | Give 150 days notice to take money out | You cannot have the money at once. Plan withdrawals five months ahead. |
| Co-operative Bank Regular Saver | 7.00% variable | £1 | Save monthly for 12 months | Pay in up to £250 a month only, and you must hold a Co-operative Bank current account. The high rate applies to a balance that builds up slowly, so the interest over a year is about £113 if you pay in the full £250 every month. |
Rates checked 20 October 2026. Variable rates can change at any time. Fixed rates are fixed for the term. For the full market, including accounts for one person, see our guide to the best savings accounts in the UK.
One honest note on the fixed rate: some comparison pages still show the Close Brothers five-year bond at 5.34%. The provider’s own page says 5.35%, and that is the figure we use.
How much FSCS protection does a joint account get?
A joint account with two holders is protected up to £240,000 if the bank fails. The FSCS limit is £120,000 per person, per bank or building society, and each joint holder counts in full. The limit rose from £85,000 to £120,000 on 1 December 2025, so any page still quoting £85,000 is out of date.
Two points matter here. First, the limit is per banking licence, not per brand. If you hold money with two brands that share one licence, your £120,000 covers both together. Second, money held in one name at the same bank counts towards that person’s own £120,000, not the joint £240,000.
How is interest on a joint account taxed?
Interest on a joint account is split 50/50 between the two holders for tax, no matter who paid the money in. Each holder is taxed on their half, using their own tax band and their own Personal Savings Allowance. The allowance is £1,000 a year for a basic-rate taxpayer, £500 for a higher-rate taxpayer, and £0 for an additional-rate taxpayer.
That split is the whole point of saving jointly. In one name, one allowance has to cover all the interest. In joint names, two allowances cover it. The GOV.UK guide to tax-free interest on savings sets out the allowances. Try our compound interest calculator to see what a balance earns over time.
Worked example: £40,000 saved by a couple
Take £40,000 earning 5.00% for a year. The interest is £2,000.
| How the money is held | Interest | Tax to pay | You keep |
|---|---|---|---|
| Joint account, both basic-rate taxpayers | £2,000, split £1,000 each | £0. Each £1,000 fits inside one £1,000 allowance. | £2,000 |
| One name only, basic-rate taxpayer | £2,000 for one person | £200. The first £1,000 is covered by the allowance; the other £1,000 is taxed at 20%. | £1,800 |
| Joint account, one basic-rate and one higher-rate taxpayer | £2,000, split £1,000 each | £200. The basic-rate holder pays nothing. The higher-rate holder has a £500 allowance, so £500 is taxed at 40%. | £1,800 |
So for two basic-rate taxpayers, the joint account saves £200 of tax on this one pot in one year. If your savings are bigger, or one of you pays higher-rate tax, compare a joint account with using your ISA allowances first. Our guide to tax-free savings and our ISA vs savings account comparison show when an ISA wins.
Can a couple use two Personal Savings Allowances on one account?
Yes. That is exactly how a joint account works for tax. The interest is split in half, and each half is tested against that holder’s own Personal Savings Allowance. Two basic-rate taxpayers get £1,000 each, so £2,000 of joint interest can be tax-free. Two higher-rate taxpayers get £500 each, so £1,000 can be tax-free.
Married couples and civil partners have one extra option. If you truly own the money in unequal shares, say 70/30, you can tell HMRC with a Form 17 declaration, and the interest is taxed in those shares instead. The rules are strict: per HMRC’s own manual, the declaration must reach HMRC within 60 days of the date it is signed, and it cannot be backdated. It only covers interest from the date of the declaration onwards. If the 50/50 split already suits you, you do not need Form 17 at all.
Joint easy access or joint fixed rate: which suits a shared goal?
Choose easy access if the money is your safety net or the goal is close. You can take money out when you need it, but the rate can fall at any time. Choose a fixed rate if the goal is years away and you will not need the money early. The rate cannot fall, but you cannot take the money out during the term.
A common pattern works well: keep three to six months of joint spending in easy access, and put money for a goal over a year away in a fixed rate or notice account, where it earns more. Our guide to easy access vs fixed rate savings and our round-up of the best fixed rate savings accounts go deeper. Savings rates tend to follow the Bank of England base rate, which is 3.75% at the time of writing.
The trap: the headline rate stops at £3,000
Read this before you chase the top easy access rate. The cahoot Sunny Day Saver pays 5.00%, but only on the first £3,000. Put £10,000 in and you still earn interest on just £3,000: £150 a year, not £500. The rest earns nothing in that account. After 12 months the account ends and your money moves to a low-rate cahoot savings account, so set a diary note for the end date on the day you open it.
There is a second joint trap, and it matters more. Either holder can usually take out all the money in a joint account, without asking the other holder. And opening a joint account links your credit files, which is called a financial association. If one of you has a poor credit record, it can affect the other person’s applications. A joint account is a trust decision first and a savings decision second. If that trust is not there, keep separate accounts and split the goal another way.
What are the risks of a joint savings account?
The main risks are trust, access and tax bands. Both holders can withdraw everything, so only save jointly with someone you trust fully. If you split up, you will need to agree how the money is divided. And if one holder pays a higher rate of tax, half the interest is taxed at their higher rate even if they paid in less of the money, unless a Form 17 declaration is in place for spouses and civil partners.
Your money itself is safe in the FSCS sense set out above: up to £240,000 per joint account is covered if the provider fails. Interest rates are the other risk. A variable rate can be cut at any time, which is why the date you checked the rate is printed at the top of this guide.
Can you have a joint ISA instead?
No. ISAs are individual. There is no joint ISA in the UK. Each person has their own £20,000 ISA allowance a year, and ISA interest is always tax-free and does not use up your Personal Savings Allowance. For many couples the best order is simple: fill your ISAs first, then use a joint savings account for what is left, so both sets of allowances work for you.
Our cash ISA rates guide lists the best cash ISA rates we have checked this week.
What it means for your money
A joint account is not just a shared pot. It is a tax tool. The 50/50 split gives a couple two Personal Savings Allowances on one account, worth up to £2,000 of tax-free interest a year for two basic-rate taxpayers. On £40,000 at 5.00%, that is £200 of tax saved in a year, every year, for the cost of opening the right account.
It also doubles your FSCS cover at one bank to £240,000, which matters if you are holding a house deposit. The price of those gains is shared control: both of you can access all of it, and your credit files become linked. For a couple saving for the same goal, with trust in place, the maths is firmly in favour of joint.
Joint savings accounts: frequently asked questions
Can anyone open a joint savings account?
Most joint savings accounts need both holders to be UK residents aged 18 or over, with a UK bank account for payments in and out. You do not have to be married. Couples, civil partners, and in many cases family members or housemates can open one, but check the provider’s rules before you apply.
Do both holders need to agree to take money out?
Usually not. On most joint savings accounts either holder can withdraw money on their own. That is convenient for a shared goal, but it is also the main risk. Only hold money jointly that you are both happy for either of you to access.
Is a joint account taxed differently from two single accounts?
The total tax can be lower. Joint interest splits 50/50, so two allowances apply to one pot. With two single accounts, each person’s interest is taxed only against their own allowance, which gives the same result only if the money is split evenly between the accounts in the first place.
What happens to a joint account if we split up?
The account stays open until you both agree what to do, or one of you asks the bank to freeze it. The bank will normally need instructions from both holders to close it and split the money. If you cannot agree, you may need legal advice. Keep records of who paid what in.
Does a joint savings account affect my credit score?
Opening a joint account creates a financial association on both credit files. Lenders can then look at both records when either of you applies for credit. Saving itself does not harm a score, but the link means a partner’s poor record can affect your applications, and yours can affect theirs.
How many joint savings accounts can we have?
There is no legal limit. Many couples use one joint account for bills, one for a house deposit and one for holidays. Remember the FSCS limit is per banking licence, so spreading large sums across different licences keeps more of your money covered.
Do this next, in this order
- Add up your joint savings and check the rate you earn today. If it is near 1%, you are losing about £1,600 a year on £40,000 against the best easy access rate we checked.
- Fill your cash ISAs first if you have allowance left. ISA interest is always tax-free. The ISA allowance is £20,000 each per tax year, and the tax year ends on 5 April 2027.
- Open the joint account that fits your goal: easy access for money you may need, fixed or notice for money you can leave alone. Check the balance cap in the table above before you move a large sum.
- Move only money you both agree is joint. Keep a note of who paid in what, in case you ever need it.
- If you are married or in a civil partnership and you own the money in unequal shares, decide now whether a Form 17 declaration helps. It must reach HMRC within 60 days of signing and cannot be backdated, so do not leave it until the tax year ends.
- Set a diary note for any bonus or account end date on the day you open the account, so the money never sits on a dropped rate by accident.
Sources: provider pages and checked best-buy tables, 20 October 2026 (Close Brothers, GB Bank product summary, MoneyfactsCompare). FSCS limits from the FSCS. Tax allowances from GOV.UK. Form 17 timing from HMRC’s Trusts, Settlements and Estates Manual. This page is general information about savings accounts, not personal financial advice. Rates can change or be withdrawn at any time, so check the provider’s page before you apply.
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