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Save up to £20,000, tax-free every year with a Tembo Cash ISA, and earn 2.9x more interest than if you were to save with one of the Big 4 banks! That's over £500 more in interest over 5 years. Plus, unlimited withdrawals, fee-free mortgage advice, and monthly paid interest. Open with as little as £10!
Research shows that 52% of people with a Cash ISA use the same provider they use for their current account, but this isn’t always a good idea! The big high-street banks don’t necessarily offer the most competitive rates. To see how another provider could help you reach your savings goals faster, take a look at our guide to the Best Cash ISAs in the UK.
Coventry Building Society currently offers eight Cash ISA saving products, with the most competitive rates available for under 18s or adults willing to lock their cash savings away for a set time period. Their rates range from 2.45% (variable) AER with their Easy Access ISA to 4.32% (variable) AER with their Fixed Rate Cash ISA.
Source: https://www.coventrybuildingsociety.co.uk/member/savings/cash-isas.html/. Current Coventry Building Society Cash ISA rates are accurate as of March 2025.
Coventry Building Society’s current best Cash ISA rate is 4.32% (variable) AER which you can get with their 1 Year Fixed Rate Cash ISA. If you withdraw your funds during that time, the account will automatically be closed and you'll be charged the equivalent to 90 days’ interest on the account balance. The next best rate available is their Online Access ISA, which offers 4.30% (variable) AER, which allows you to make up to 6 withdrawals per year. After the 6th withdrawal, you’ll receive a charge equal to 50 days’ interest.
Take a look at our guide to the best Cash ISAs on the market to compare different accounts today.
Coventry Building Society does have some competitive interest rates, but its best Cash ISA rates are reserved for junior savers or those who are willing to lock away their money for a set time period. If you want an easy-access account, Coventry Building Society might not be the best option as you may get better interest rates with a different provider.
Not only that, other providers may offer better customer service too. Here at Tembo, for example, we’ve helped thousands of people save for the future and even get on the property ladder with our award-winning savings app. We’re also rated Excellent on Trustpilot, so you can be sure that we’re the real deal!
Learn more: Should I get an ISA?
You can open and pay into multiple Cash ISAs in the same tax year, but only one of them can be with Coventry Building Society. If you’ve already got a Cash ISA with Coventry or another provider and you’re looking for a more competitive rate, it’s up to you whether you keep multiple accounts or transfer your current ISA to a new provider.
If you’re saving a deposit for your first home, it may make sense to have a Cash ISA and a Lifetime ISA (LISA). Save up to £4,000 of your total ISA allowance in a Lifetime ISA each year and you’ll get a 25% bonus from the government - up to £1,000 each tax year! This means that if you max out your LISA for 3 years in a row, you’ll have a £15,000 deposit towards your first home. Choose a LISA with a competitive interest rate and you’ll have even more than this!
Buying a house with another first-time buyer? You can have a LISA each, potentially giving you double the savings, double the bonuses, and even more interest!
If you withdraw money from your Lifetime ISA for anything other than an eligible home purchase or retirement, you’ll be charged a 25% fee on the amount you withdraw. This could leave you with less than you put in. So, if you’re looking for a tax-free savings account for short term goals or emergencies, stick to a regular Cash ISA!
Take a look at our guide to the Lifetime ISA withdrawal penalty for more information.
Learn more: Cash ISA or Lifetime ISA. Which one should I pick?
Coventry Building Society could increase its ISA rates, but it could lower them instead. Banks and building societies tend to use the Bank of England’s base rate as a guide when setting their own rates. If the base rate rises, banks and building societies often increase their mortgage and savings rates too. If the base rate falls, mortgage and savings rates often follow. But it’s impossible to know exactly what will happen to interest rates in future.
If you already have a fixed rate Cash ISA with Coventry Building Society, your interest rate will stay the same for the remainder of your fixed term, even if the Bank of England’s base rate drops or your provider changes its current ISA offering.
Learn more: Cash ISA or Lifetime ISA. Which one should I pick?
With so many providers to choose from, don’t just compare interest rates. Compare customer service quality, how easy it is to access your money and whether the provider offers bonuses or rewards too! The right Cash ISA can make a huge difference to your savings progress in both the short and long term. For example, by saving with a Tembo Cash ISA, over 5 years you'll earn hundreds more in interest than if you were to save in a similar account with one of the four biggest banks!
Take a look at our guide to the best Cash ISA rates for a handy breakdown of the most competitive accounts.
Transfer your Coventry Building Society ISA to another provider by simply opening a new ISA and asking your new provider to move the money for you. Don’t try to complete the switch yourself, as this can impact your savings’ tax-free status and this year’s ISA allowance!
Let’s imagine you’ve saved £35,000 in a Cash ISA over a number of years and you’d like to transfer your savings. If you try to move the money yourself, this could use up your full £20,000 ISA allowance for this tax year. You’ll also have to wait until the following tax year to move the remaining £15,000 into your new Cash ISA. Until then, you’d need to keep the money in a traditional savings account, where your interest would be taxed.
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