What is an ISA?

An ISA is an Individual Savings Account that allows UK residents to earn interest on their savings tax free. 

This can include income, dividends or capital growth within the ISA, helping your savings grow without it being reduced by tax

How Do ISAs Work?

Within each tax year, you are given a maximum ISA allowance you can invest. For the 2026/27 tax year, the allowance is £20,000. 

You may be able to spread your allowance across different types of ISAs during that tax year, as long as the total amount you invest stays within the limit. The allowance doesn’t roll over to the next tax year and resets every April. 

Some providers may have their own rules on how many ISAs you can open with them. For example, at Dudley Building Society, you can only open one Cash ISA per tax year with us.

Types of ISAs

There are several types of ISA available in the UK. While Dudley Building Society offers Cash ISAs and Junior ISAs, understanding the different types can help you make more informed decisions to suit you and your savings goals.

Cash ISA

Cash ISAs work like a traditional savings account, but any savings held in the account are tax-free. The current allowance for Cash ISAs is £20,000. 

This is due to change to £12,000 from April 2027 for savers under 65 in line with the new ISA 2027 rules, the remaining £8,000 will be required to go into Stocks and Shares ISAs for these savers. 

The £20,000 allowance will remain for savers over 65. With Cash ISAs, you can choose from different options depending on how quickly you want to access your funds and how much interest you want to earn. The most common options are Easy-Access, Fixed-Rate or Notice ISAs. 

For more information on how Cash ISAs work, contact one of our specialists, who can talk through your options and how a Cash ISA could work for you.

Stocks & Shares ISA

Stocks & Shares ISAs allow you to invest your money into the stock market while keeping any returns tax free. This differs from a Cash ISA, as any money invested goes into assets like shares, bonds or other investments. 

Therefore, the value of the money you’re investing will depend solely on market performance, which can rise or fall.

Lifetime ISA

A Lifetime ISA (LISA) is designed to help you save for your first home or prepare for later life. Each tax year, you can invest up to £4,000 into a Lifetime ISA, which includes a 25% government bonus. 

The funds in the account can only be used to purchase your first home or accessed once you turn 60. 

Any withdrawals not used for a first-home purchase and made before 60 may result in a penalty, depending on your product terms.

Innovative Finance ISA

An Innovative Finance ISA is where your money is loaned out to other people or businesses instead of being kept in a traditional savings account. 

Interest is earned when borrowers repay their loans with added interest and these returns are kept tax-free. 

However, this is subject to risk, as the capital invested is not guaranteed and any returns are dependent on borrowers repaying their loans.

Junior ISA

A Junior ISA (JISA) is an individual savings account designed for children under the age of 18 to save tax free up to the value of £9,000 per tax year. It allows parents or guardians to save on behalf of a child. 

The money invested belongs to the child but is managed by an adult (the account operator) until they turn 18. 

Once the child turns 18, the account will automatically change into an adult ISA. You can’t withdraw money from a Junior ISA until the child turns 18.

Benefits of an ISA

ISAs that we offer

Frequently asked questions about ISAs

How many ISAs can I have?

As a general rule, you can have multiple ISAs open at the same time, as long as the total amount you pay into an ISA each tax year stays within the annual allowance.

Some providers may have their own rules on how many ISAs you can open with them. At Dudley Building Society, you can open one Cash ISA per tax year. You may also open Cash ISAs with other providers, provided the total amount you pay in each year stays within the £20,000 ISA allowance.

Can I transfer an ISA to another provider?

Yes, you can transfer an ISA to another provider without losing its tax-free status. However, some providers may charge a fee to transfer, so it is important to check the product terms first and to use the official ISA transfer process.

At Dudley Building Society, we accept ISA transfers from other providers across our ISA range. To learn more, check out our ISA transfer process
 

What happens to my ISA at the end of the tax year?

Once the tax year ends, your account stays open and you can continue contributing until you reach the maximum allowance for the new tax year. At Dudley Building Society, you may be able to transfer your existing ISA into aa new ISA product., depending on your account terms. 

For fixed-rate products, transfers or changes are only available at the end of the fixed term. Its important you check your product terms first before making a transfer. 

Can I withdraw money from an ISA at any time?

This depends on the type of ISA you have: 

  • Instant Access ISAs: You can usually withdraw your money at any time without penalty. However, it is important to check the product terms first. 
  • Notice Accounts ISAs: You can withdraw money, but you’ll need to get in touch with your provider and give them notice in advance. For example, if you have a 30-day notice account, you must give your provider 30 days’ notice before withdrawing. If you withdraw without giving the required notice, you may face a penalty. It is important you refer to the product terms for full details.  
  • Fixed Rate ISAs: Withdrawals from Fixed Rate accounts are restricted until the end of the fixed term period. Early withdrawals are not allowed and could result in a penalty. Please refer to the product terms for more information. 

Any withdrawals from ISAs at Dudley Building Society, are subject to losing their tax-free status. You will not be able to make this money back up and can only use your remaining allowance you had at the time of the withdrawal. The best way to keep your allowance would be by doing an ISA transfer.

What happens if I exceed the ISA allowance?

Any amount you invest into an ISA above the £20,000 limit will not qualify for tax-free status and won’t be protected from tax. 

All contributions are reported to HMRC and they will identify any excess contributions, which could lead to account closures and funds being returned to you