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Tandem: Cash ISA reviews

Name: Cash ISA
Rating: 4.91 (69 reviews)

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4.91

Based on 69 reviews, last reviewed 16th Apr 2026

6300% increase in 5 star reviews

in the past 90 days

No new 1 star reviews

in the past 90 days

91%

3 star

2 star

1 star

Latest highest rating:

5

Tandem are great to deal with, interest rates are up... Tandem are great to deal with, interest rates are up with the best and the app is fantastic. Happy customer here! Reviewed on: 16th April 2026

Latest lowest rating:

N/A

This product has not received a review of either 1 or 2 stars.

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About this product

Tandem offer fixed rate cash ISAs and easy access cash ISAs.

Tandem cash ISAs can be opened online. If you withdraw money from a fixed rate cash ISA, you’ll pay a penalty. You get unlimited withdrawals and deposits with an easy access cash ISA.

Tandem cash ISA reviews help you find out what it’s really like to be a customer. If you’ve used Tandem before, you can also leave a review and share your experience.

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Tandem Cash ISA reviews (69)

Tandem are great to deal with, interest rates are up...

Tandem are great to deal with, interest rates are up with the best and the app is fantastic. Happy customer here! Reviewed on: 16th April 2026

Great Cash ISA, easy and simple to transfer money

I've had a Tandem savings account for a few years and so when they launched the Cash ISA it was great news. I can now save Tax Free! Great App and easy to use and transfer money. Reviewed on: 14th April 2026

Excellent servive and great savings rates

Excellent servive and great savings rates Reviewed on: 3rd April 2026

ISA transfer in.

Verbal help provided by Heather during ISA fixed term transfer. Features and time frames clearly explained. Assistance given over the telephone to open new fixed ISA. Reviewed on: 31st March 2026

Easy access to all our accounts app is easy to...

Easy access to all our accounts app is easy to use Reviewed on: 30th March 2026

Very friendly and helpful staff, I had an issue when...

Very friendly and helpful staff, I had an issue when opening my account but soon fixed by the on line staff Reviewed on: 30th March 2026

I have just begun with Tandem and any communication...

I have just begun with Tandem and any communication has been easy. I also like where they invest their money. Reviewed on: 29th March 2026

All round excellent company

I have had an account with Tandem for a number of years now. They offer competitive prices and an easy to navigate website. Reviewed on: 29th March 2026

Great product and service, love the app layout easy...

Great product and service, love the app layout easy to use Reviewed on: 29th March 2026

Simple and Refreshingly Hassle-Free Savings

I’ve had a really positive experience with the Tandem Cash ISA so far. The whole process—from opening the account to managing it day-to-day—has been straightforward and intuitive. What stands out most is the competitive interest rate, especially compared to some of the more traditional banks. It feels like my savings are actually working for me without needing to constantly switch accounts or chase better deals. The app experience is also a big plus—clean, easy to navigate, and quick to check balances or manage deposits. Everything feels transparent, with no hidden complications. Overall, it’s a great option if you’re looking for a simple, flexible, and rewarding way to save tax-free without the usual friction. Reviewed on: 28th March 2026

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