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Cynergy Bank: Cash ISA reviews

View other Cynergy Bank products
4.85
Based on 302 reviews, last reviewed 19th Apr 2026
27900% increase in 5 star reviews
in the past 90 days
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Latest highest rating:

5

Easy to navigate site. Friendly , helpful staff. Easy to navigate online banking. Keeps me updated about offers. Reviewed on: 19th April 2026
SGS's avatar
SGS

Latest lowest rating:

1

Cynergy Bank complaint team has been very difficult... Cynergy Bank complaint team has been very difficult to get through to as they do not have an option to speak to them and have never listened to my iss... Read more Reviewed on: 18th April 2026
Kieran G's avatar
Kieran G
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About this product

Cynergy Bank have a range of cash ISAs.

You can choose from fixed rate cash ISAs or easy access cash ISAs. Cynergy Bank cash ISAs can be opened with a minimum of £500. You can open and manage a Cynergy Bank cash ISA online.

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

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Cynergy Bank Cash ISA reviews (302)

Cynergy provides good rates for cash ISAs.

5
Cynergy provides good rates for cash ISAs. It’s easy to open an account online. If there are any issues, telephone support staff are very helpful. Reviewed on: 23rd March 2026
Patricia M's avatar
Patricia M

Great options and good interest on cashbisa

5
Great options and good interest on cashbisa Reviewed on: 23rd March 2026
Brian Conibere's avatar
Brian Conibere

Excellent service

5
Good product and good service simple process and efficient App Reviewed on: 23rd March 2026
Jacqueline O's avatar
Jacqueline O

Rates have been good and service has always been ver...

5
Rates have been good and service has always been very good. Reviewed on: 23rd March 2026
Elaine V's avatar
Elaine V

Good interest rates paid and simple to operate on line.

5
Good interest rates paid and simple to operate on line. Reviewed on: 23rd March 2026
Graham J's avatar
Graham J

Cynergy Bank tops for a Cash Isa.

5
Opened a Cash Isa with Cynergy Bank in August 2025 with a great rate. The process was extremely efficient with clear instructions from their informative web site which allows informed decision-making. Communication was excellent at all stages. I honestly would have no hesitation in using Cynergy Bank again when my Cash Isa reaches the end of its term. Reviewed on: 23rd March 2026
MB's avatar
MB

What’s not to like?

5
Simple efficient and secure processes and easy access to information. Reviewed on: 23rd March 2026
Rani W's avatar
Rani W

Had an issue on renewal 2 years ago and it was sorte...

5
Had an issue on renewal 2 years ago and it was sorted after a few emails. Reviewed on: 23rd March 2026
Scot S's avatar
Scot S

fast efficient setup.

5
fast efficient setup. good communication. Reviewed on: 23rd March 2026
ian b's avatar
ian b

terrible telephone customer service at ISA maturity.

1
terrible telephone customer service at ISA maturity. apparent new online system that was not functional 11 days before maturity. no workaround. had apparently posted the renewal notice 18 days before maturity, arrived 11 days before maturity date. Multiple telephone security questions (8 in total!) akin to data harvesting. 50 minute call left me in a worse position than when I made the call. I had requested that the call transcript be processed as a complaint but received no confirmation that this was being done. Reviewed on: 23rd March 2026
R M's avatar
R M

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