Savings Calculator
Estimate how savings grow with contributions and interest.
Projected balance
£38,074.58
After 10 years at 4.5%
Total deposited
£29,000.00
Interest earned
£9,074.58
Final balance
£38,074.58
In-depth explanation
Project how a savings balance grows with a starting amount, regular monthly deposits, and compound interest. Switch between UK (£) and US ($) displays. Everything runs locally in your browser — your inputs are not uploaded to produce the result.
Interest compounds at the frequency you choose (monthly by default). Monthly deposits are spread across those compounding periods. Tax on interest varies (for example UK personal savings allowance). Use the ISA Calculator for tax-free UK wrapping.
This model uses a constant rate for planning. Real savings rates can change. Use Savings Calculator for quick planning; confirm important money, tax, or health decisions with an official source or professional when needed.
Monthly deposits plus compound interest is how most cash savings actually grow if you pay yourself first. A teaser rate that lasts six months is not the rate to project for 20 years — use a rate you believe you can keep.
UK personal savings allowance and US tax on interest are not applied line by line. ISA wrapping is a different page. If inflation is your worry, compare with the Investment Growth real-value output.
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Frequently asked questions
How is interest applied?
Interest compounds at the frequency you choose (monthly by default). Monthly deposits are spread across those compounding periods.
Does this include tax?
No. Tax on interest varies (for example UK personal savings allowance). Use the ISA Calculator for tax-free UK wrapping.
Can rates change over time?
This model uses a constant rate for planning. Real savings rates can change.
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