Fixed Term Saver

Lock in your funds, sit back, and watch them grow.

Up to
4.20
% AER
No withdrawals during the term
14 days to fund your account
Guaranteed return over time
Unlocked
2 days left to deposit
Brian's Saver
Guaranteed return
1 Year Fixed Term Saver
£1,000.00
Locked
Until 10 Nov 2025
Moneyfacts
Best App-Only
Savings Provider
2025
Moneyfacts
Voted Best
Customer Service
2025
Account Overview

Compare our Savers

Already used your tax-free allowance in an ISA? Compare our flexible Instant Access Saver account next to our Fixed Term Saver accounts.

Account type
Term
Interest rate
Access funds
Summary box
Fixed Term Saver
1 year
18 months
2 years
3 years
5 years
4.20
% AER
4.10
% AER
4.10
% AER
4.10
% AER
4.10
% AER
At term end
No term
3.65
% AER variable
24/7 access

Helpful tip!

AER stands for Annual Equivalent Rate and illustrates what the interest rate would be if interest was paid and compounded each year. This allows you to compare easily what return you can expect from your savings over time.

Fancy a tax-free Cash ISA instead?

Earn up to 
4.10
% AER, tax-free.
ACCOUNT FEATURES

Why choose this Fixed Term Saver?

Our Fixed Term Saver offers a guaranteed return, ideal for locking away savings and growing your money over time.

Competitive fixed rate

Your rate won't change, giving you guaranteed return over an agreed term and you have 14 days to fund your account.

Perfect for lump sums

Earn interest on a sum of money you're happy to lock away for some time.

Savings locked in

Once your money is locked in, it stays put for the full term, helping you stay focused on your goals without temptation.

Choose a term that suits

Starting from 1 year. The more you lock away, the more interest you'll earn.

Morgana's Car Fund
1 Year Fixed Term Saver
£1,280.00
Unlocked
2 days left to deposit
Morgana's Saver
1 Year Fixed Term Saver
£4,000.00
Locked
Until 10 Nov 2025
Apply Online

Prefer to apply online?

If you're opening a Fixed Term Saver, you can apply in the Tandem app or online. Just know, you'll still need the app to manage your account once it's set up.

You're in safe hands

We’re a fully regulated UK bank so you can rest easy knowing that your money is protected, up to £85,000 by the Financial Services Compensation Scheme (FSCS), the UK’s deposit guarantee scheme.

AWards and Reviews

That's enough from us, hear it from those who matter

See what others have to say
Join 150,000+ on the app
Moneyfacts
Best App-Only
Savings Provider
2025
Best app-based savings provider
FAQs

Got a question?

We’ve got answers! Explore our most common savings questions, or head to our full FAQ page to find more.

What happens when my Fixed Term Saver reaches the end of its term? 

If you don’t give us instructions before your Fixed Saver unlocks, it will automatically move to a Matured Funds Saver, earning a variable interest rate instead of a fixed rate – until you decide what to do with your funds.

Here are your options:

  • Reinvest – Open a new Fixed Saver and lock in a fresh rate for a set term.
  • Transfer – Move your savings to an Instant Access Saver for 24/7 access.
  • Withdraw – Take out your full balance and close the account.
  • Do nothing – Your money stays in the Matured Funds Saver at the new variable rate.

The easiest way to give your instruction is through the Tandem app:

  1. Open the app
  2. Go to Banking and select your Matured Funds Saver
  3. Manage your payout preferences

Prefer to chat? Give our customer support team a call.

Can I add more money or take money out of my Fixed Saver once the funds are locked in?

Once you’ve finished funding your account and it’s locked in, you will no longer be able to add or withdraw funds for the duration of your term, until your account matures. Once your account matures you will have the option to either reinvest or withdraw your funds.

Any deposits that you make that exceed the maximum balance of £2,500,000, or deposits made after the funding window has ended, will be returned to the account you made payments from.

What should I do when I’ve finished adding funds to my Fixed Saver?

Once your 14-day funding window expires, your account will automatically lock and you will no longer be able to add funds. If you finish adding funds before your window expires, you can also choose to manually lock your account early. Once you’ve locked the account in your app, this cannot be undone.

How long do I have to fund my Fixed Saver, once I’ve opened an account?

Once you have opened your new Fixed Saver, you will have 14 days to fund your account, during which time you can add funds as many times as you like. Once your 14-day window has passed, your account will be locked and you will no longer be able to add or withdraw funds, until your term has ended.

Why can’t I fund my Fixed Saver from an overseas current account?

We are only able to accept money transferred from a verified UK bank account. This provides fraud protection for both Tandem and you.

Is there a limit to how many Fixed Saver accounts I can have?

There is no limit to the number of Fixed Saver accounts that you can open, or have open, at any one time.

Where do I find the sort code and account number of my Fixed Saver account?

Simply open the app, tap on your Fixed Saver account and then select the ‘Info’ icon to access your account details.

How will I be notified when my Fixed Saver is maturing?

We’ll notify you by email or letter 14 days before your Fixed Saver matures, depending on your contact preferences. You’ll be asked to decide what to do with your savings – whether to reinvest, withdraw, or transfer them. You can share your instructions via the Tandem app.

Five days before maturity, we’ll send a mandatory reminder – even if you’ve already told us your plans.

Can I transfer money in from a bank account other than my connected account?

No, we can only accept money from a bank account that we have verified as belonging to you. We will return any money sent from accounts that haven’t been verified.

If you wish to transfer funds from a different account, select ‘Connect a new current account’ through the ‘Pay in via Open Banking’ screen in the app. Once we’ve verified this new account, you can then transfer money.

If you need more assistance with connecting another account, feel free to use our in-app chat or call 020 3370 0970 and we’d be happy to help.

Remember, any deposits from additional current accounts must be made within your 14 day funding window, before your account is locked.

How does a Fixed Saver account work?

A Fixed Saver is an account that you open for a certain period of time (the “term” of the account) where you can’t take your money out, or add any more money in, until the end of the term.

You have a 14-day window to fund your account after opening, during which you will be able to make as many deposits as you like.After the 14-day window, your account will be locked, and you will not be able to access your funds until your account reaches the end of its term.

In return, we offer competitive interest rates that reflect that you can’t take your money out during the term. Your interest rate will be fixed for the term of the account and interest is paid annually, and at the end of the term, into your connected bank account.

Ready to make your money do more?

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Open an account
Start growing your money

Can't find what you're after?

Check out our FAQs for answers to your burning questions, or give our friendly support teams a shout.

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