Welcome to ISA Interest Calculator. The UK's free ISA interest calculator for stocks & shares ISAs, Cash ISAs and Lifetime ISAs.
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Enter a lump sum, a regular payment, or both. Then choose how many years you plan to invest and set an annual interest rate.
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You can think of ISAs as tax-free ‘wrappers’ protecting and storing your hard-earned pennies and pounds.
You can deposit a certain amount in an ISA per year – normally up to £20,000, and earn tax-free interest at a higher rate (with a Cash ISA), trade stocks and share tax-free (with a Stocks and Shares ISA) and even save for the ultimate payday when you are old and grey (with a Lifetime ISA).
Here are ISA Interest Calculator, we ensure that you can keep accurate tabs on the amount you could potentially be earning with your ISA wrapper and help UK savers keep tabs on their hard-earned savings.
Recognised for innovation and ease of use, ISA Interest Calculator sets the standard for quick and easy calculator tools for UK investors & savers. Join the thousands who trust us for fast and secure calculations.
When you deposit money into a Cash ISA, your bank or provider pays you interest in return for keeping your savings with them. This is great, but not all interest is created equal. Some ISAs offer simple interest, while others provide compound interest—where interest is added to your balance and generates even more interest over time.
The rate at which you earn interest is critical because it dictates how fast your savings grow. A difference of just 0.5% in interest might not seem like much, but over several years, it can add up to hundreds or even thousands of pounds.
Most Cash ISAs calculate interest in one of the following ways:
Daily Interest Calculation – This method works in your favor because interest is calculated on the balance every single day. The more often it’s calculated, the faster your savings grow.
Monthly Interest Payment – Some ISAs pay interest monthly, which can be great if you rely on your savings for income.
Annual Interest Payment – Other ISAs only pay out interest once a year. If your ISA compounds annually rather than daily or monthly, you might be missing out on extra growth.
If you’re trying to figure out how much your ISA could be worth in the future, an ISA Interest Calculator can make things easier. You simply enter your initial deposit, interest rate, and compounding frequency, and the calculator will show you how much you can expect to earn.
A good ISA Interest Calculator will help you compare different accounts side by side, so you can decide which offers the best returns for your savings goals.
Interest in a Cash ISA is typically calculated daily and paid either monthly or annually, depending on your account’s terms. Here’s a simple example:
Understanding the interest calculation method helps you make informed decisions about your savings. For instance, accounts that compound interest can grow your savings faster than those that don’t. Additionally, knowing whether interest is paid monthly or annually can influence your choice, especially if you prefer regular income from your savings.
Join the future of ISA calculations today. With our secure & easy-to-use site, you can quickly calculate your ISA savings and share with friends & family with ease, all from your phone. Sign-up for all the latest ISA deals.
