Savings
Whether you’re looking for instant access, annual bonuses or tax-free savings, we have an account that will help you achieve your savings goals.
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Mortgages
Whether you’re looking to buy your first home, move somewhere bigger, or simply get a better deal, we can offer a mortgage that suits you.
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Help
Need help? Take a look at our FAQs section for some guidance.
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About Us
Established in Newport in 1869 to help local people build homes, we now help people across Wales and England buy properties and save for their future.
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Cash ISAs for 2025/2026 Tax Year
Instant Access Cash ISAs
Account Name Interest Rate
(AER/Tax-free)		 Ways to Open
Instant ISA 2.60% - 2.85% Online Branch or Agency, or via the App
Member Exclusive Cash ISAs
You must be an existing member for this ISA
Click on the account name in the table below for more information
Account Name Interest Rate
(AER/Tax-free)		 Ways to Open
Exclusive One Access Cash ISA 3.35% Online Branch or Agency, or via the App
Limited Access Cash ISAs
Account Name Interest Rate
(AER/Tax-free)		 Ways to Open
Limited Access
Cash ISA		 3.03% Online Branch or Agency, or via the App
Notice Cash ISAs
Account Name Interest Rate
(AER/Tax-free)		 Ways to Open
35 Day Notice Cash ISA 3.95% Online Branch or Agency, or via the App
Fixed Term Cash ISAs
Account Name Interest Rate
(AER/Tax-free)		 Ways to Open
1 Year Fixed Rate
Cash ISA		 4.00% Online Branch or Agency, or via the App
18 Month Fixed Rate Cash ISA

3.80%

 Online Branch or Agency, or via the App
2 Year Fixed Rate
Cash ISA		 3.80% Online Branch or Agency, or via the App

3 Year Fixed Rate
Cash ISA

3.75%

 Online Branch or Agency, or via the App
5 Year Fixed Rate
Cash ISA

3.85%

 Online Branch or Agency, or via the App

Further information and T&Cs for each of our ISAs can be found by clicking the account name in the tables above

Unsure on what an ISA is?
Click here for our Guide to ISAs
Click here to view our ISA comparison document

More detailed information about ISAs is contained in the ISA Factsheet available from any tax office or online at www.hmrc.gov.uk

Looking for the rate on a closed savings account?
Simply click on the links below to view:

Withdrawn Fixed Rate Accounts
Withdrawn Variable Rate Accounts

View our other savings products

Bonds
General Savings

FSCS Protected

Your home may be repossessed if you do not keep up repayments on your mortgage. Think carefully before securing other debts against your home.

Useful Resources

About Us

Mortgages

Mortgage Calculators

Savings

Monmouthshire Building Society is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority. Financial Services Register Number: 206052. FCA register address www.fca.org.uk/register/. We are members of the Financial Services Compensation Scheme. We are members of the Building Societies Association and Council of Mortgage Lenders. Details of our Customer Satisfaction and Complaints procedures are available and complaints that we cannot resolve may be referred to the Financial Ombudsman Service (http://www.financial-ombudsman.org.uk/). By accessing any part of this website, you shall be deemed to have accepted our Website Terms of Use.
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