Tools
See how deposits and a constant AER could grow a savings balance over time. Illustrative only — rates can change.
Calculator mode
Amount you plan to add each month. £0 is allowed for a lump-sum-only illustration.
AER shows the annual rate you'd earn if interest were compounded and the rate stayed the same for a year.
Estimated savings balance
£7,322.27
Based on a constant 4.5% AER over 5 years
Savings rates can change over time.
Total deposited
£6,500.00
Interest earned
£822.27
AER
4.5%
£6,500.00
Total deposited
+
£822.27
Interest earned
=
£7,322.27
Estimated savings balance
These scenarios are illustrations only. Savings rates can rise or fall.
Lower rate
3.5% AER
£7,131.39
Current assumption
4.5% AER
£7,322.27
Higher rate
5.5% AER
£7,517.99
Educational comparisons only — not recommendations.
Save £25 more each month
Increase the regular monthly deposit by £25
£8,997.06
Difference: +£1,674.79
Extra deposits £1,500.00 · Extra interest £174.79
Save for 1 year longer
Extend the period to 6 years
£8,876.32
Difference: +£1,554.06
1% lower AER
Assume 3.5% AER instead
£7,131.39
Difference: -£190.88
Money deposited earlier generally has longer to earn interest. This compares depositing your planned regular total at the start versus monthly over the same period (same starting balance).
All deposits earlier
£8,072.81
Gradual monthly deposits
£7,322.27
Chart view
Year 2
£2,067.49
Year 3
£3,723.64
Year 4
£5,473.46
Year 5
£7,322.27
Save different deposit, rate or time assumptions and compare them side by side.
This calculator provides illustrative estimates only. Actual savings rates can change, and interest may be calculated or paid differently depending on the account. It does not guarantee the rate or return available from any savings provider.
Learn more about building your savings
Explore guides on emergency funds, saving regularly and choosing savings accounts.
Explore Build Your Savings guides →Your entered AER is an illustration and may not match rates currently available.
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