Gross vs AER Explained: What Do They Mean? Explained
When comparing savings accounts, the interest rate is one of the first things most people look at.
However, savings rates are often shown using terms such as Gross, AER and tax-free. Understanding what these terms mean can make it easier to compare accounts properly and choose the right option for your savings.
This guide explains the difference between Gross and AER, how they are used, and what to check before opening a savings account.
What does Gross mean on a savings account?
Gross is the interest rate paid before any income tax is deducted.
For most UK savings accounts, interest is usually paid gross. This means the provider does not deduct any income tax before paying the interest into the account.
Whether income tax is due depends on the saver’s personal circumstances, the amount of interest earned and any allowances that apply.
For example, if a savings account pays 4.00% Gross, this means the account pays interest at a rate of 4.00% a year before any tax position is considered.
Gross is useful because it shows the underlying interest rate being paid by the account.
What does AER mean?
AER stands for Annual Equivalent Rate.
It shows what the interest rate would be if interest was paid and compounded once each year.
Compounding means earning interest on interest that has already been added to the account. This can happen when interest is paid into the account and then starts earning interest itself.
AER is designed to make it easier to compare savings accounts, even when interest is paid in different ways.
As every advertisement for a savings product which quotes an interest rate will contain an AER, you will be able to compare more easily what return you can expect from your savings over time.
For example: one account may pay interest annually, while another may pay interest monthly. AER shows the equivalent yearly rate for each account, allowing you to compare accounts even where interest is calculated or paid differently.
Gross vs AER: What is the difference?
The main difference between Gross and AER is that Gross is the interest rate before tax, while AER is a standardised annual rate that helps you compare savings accounts.
If an account pays interest once a year, the Gross rate and AER may be the same.
If an account pays interest more frequently, such as monthly, the AER may be slightly higher than the Gross rate. This is because interest added during the year may itself earn interest.
Savings accounts often show both Gross and AER because each figure is useful. Gross shows the rate before any tax position is considered. AER helps savers compare accounts on a like-for-like annual basis.
In simple terms:
- Gross shows the interest rate before tax.
- AER shows the yearly rate including compounding.
- AER is usually the better figure for comparing savings accounts.
- Gross helps explain the rate before any tax position is considered.
What does tax-free mean?
Some savings accounts, such as Cash ISAs, show interest as tax-free.
Tax-free means the interest earned within the account is exempt from Income Tax, subject to ISA rules and annual subscription limits.
This is different from Gross. Gross means interest is paid before tax, but tax may still be due depending on the saver’s circumstances. Tax-free means the interest is not subject to Income Tax within the account, provided the account follows the relevant ISA rules.
This is why Cash ISA rates are often shown as AER / Tax-Free, rather than AER / Gross.
Is AER the same as the interest you will receive?
AER is a useful comparison figure, but it does not always show the exact amount of interest a saver will receive.
The actual interest earned can depend on:
- How much money is held in the account.
- How long the money stays in the account.
- Whether the rate is fixed or variable.
- Whether interest is paid annually, monthly or at maturity.
- Whether money is added or withdrawn.
- Whether the account has any restrictions or conditions.
For example, a regular saver may show a higher AER, but the account may limit how much can be paid in each month. This means the total interest earned may be different from what someone might expect if they only look at the rate.
AER helps compare rates, but the account terms still matter.
How to compare savings accounts using Gross and AER
When comparing savings accounts interest rates, AER provides a useful starting point because it allows rates to be compared on a consistent annual basis.
However, the rate should not be considered on its own. Savers should also check the Gross rate, tax treatment, access rules and account conditions.
Before choosing a savings account, consider:
- What is the AER?
- What is the Gross rate?
- Is the interest taxable or tax-free?
- Is the rate fixed or variable?
- When is interest paid?
- Can money be withdrawn?
- Is there a minimum or maximum balance?
- Are there limits on deposits?
- How long does the money need to stay in the account?
This gives a more complete picture than looking at the headline rate alone.
Understanding rates on Monmouthshire Building Society savings accounts
Monmouthshire Building Society savings products clearly show the interest rate and whether it is Gross, tax-free, fixed or variable.
Understanding these terms can make it easier to compare the different savings options available before applying.
It is also important to read the account summary box and terms and conditions carefully. These explain the interest rate, access rules, deposit limits and how the account works.
Gross vs AER: key takeaway
Gross and AER are both used to explain savings interest rates, but they do different jobs.
Gross shows the interest rate before tax. AER shows the annual equivalent rate, including the effect of compounding.
When comparing savings accounts, AER is often the most useful figure for comparing rates fairly. However, savers should also consider whether the rate is fixed or variable, whether interest is taxable or tax-free, and whether the account gives the access they need.
Understanding Gross and AER can help make savings decisions clearer and more informed.
Explore and compare Monmouthshire Building Society savings accounts today.