Fixed Rate Cash ISA

Earn from 4.21% to 4.31% AER

Important Notice

Castle Credit Finance has recently revised its ISA interest rates as published on our website. We would like to inform you that if we have not processed your application as yet, you will still get the same interest rate that you applied for on the date of your application. However, if you have applied after 5:00 PM on 7th April, 2025, you will get the new rate as published on our website.

  • Choose from a 1 to 5-year term to fit your savings plan
  • Minimum balance requirement of £2,000
  • Save up to £20,000 per year as per current HMRC threshold
  • FSCS-protected

 

Fixed Rate Cash ISA

Earn from 4.21% to 4.31% AER

Key Product Information

  • A Fixed Rate Cash ISA in the UK offers a guaranteed, tax-free interest rate for 1-5 years.
  • You can save up to £20,000 per tax year, but early withdrawals incur penalties.
  • You may transfer in an ISA from your existing provider to us.
  • It is ideal for those who can lock away their money and want a fixed interest rate. 
Benefits
  • Competitive interest rates that are tax-free
  • FSCS protection up to £85,000 for each eligible depositor
  • Interest rates are fixed and do not change during the term of the deposit
Limitations
  • Premature withdrawals are subject to penalty

Product Summary

Fixed Rate Cash ISA

Ready to get started? Press the button to find out how.

Apply For: Fixed Rate Cash ISA

Internet Banking

The fastest way to apply is through Internet Banking and selecting 'Register' then follow the on screen instructions.

Apply Using Internet Banking

By Post or Branch
  • Application: Bring your your completed Application Form into the Castle Credit Finance London Branch or return via post. Postal applications can take up to 15 days to be processed.

  • Transfer in: If you need to make a transfer in, use the Transfer in Form below and return it to:

Freepost:

RUEE-STYR-XYKE,

Castle Credit Finance, 2 Brook Street,

London W1S 1BQ

Download the Castle Credit Finance Fixed Rate Cash ISA Application Form.

Download the Castle Credit Finance Fixed Rate Cash ISA Transfer in Form.

Please make sure that read and understand the below documentation before you apply: