Fixed Deposit Maturity Calculator
Maturity value of a fixed deposit.
Calculate fixed deposit maturity value by entering your principal, annual interest rate, and term to see total interest earned.
What this tool does
A fixed deposit's maturity value is calculated by compounding your principal at the stated annual rate over your chosen term, using monthly compounding by default. This calculator takes your principal amount, annual interest rate, and deposit term in months, then shows both the final maturity value and the total interest earned. The maturity amount grows primarily based on your initial principal and the annual rate—longer terms and higher rates produce larger returns. A typical scenario might involve comparing maturity values across different term lengths to see how time affects growth. The calculation assumes standard compound interest and monthly compounding frequency; actual products may use different compounding schedules, so it's worth checking your specific terms. The result is for illustration purposes based on the inputs provided.
Enter Values
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Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
10,000 fixed deposit at 5% for 24 months matures at about 11,049 — 1,049 in interest. Fixed deposits offer rate certainty but lock money up. Any need to withdraw early typically costs 0.5-1% of the rate. Useful for money that definitely won't be needed before maturity.
Quick example
With principal of 10,000 and annual rate of 5% (plus term of 24), the result is 11,049.41. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter Principal, Annual Rate, and Term (Months). Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.
What's happening under the hood
Standard compound interest for fixed deposit. Monthly compounding assumed — check product terms for specific compounding frequency. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
How to use this beyond the first run
Re-run the calculation once a year. Life changes — pay rises, new expenses, interest-rate shifts — and the figure that looked right 12 months ago often isn't today. Annual recalibration keeps the plan honest.
What this doesn't capture
The calculation assumes a steady savings rate and a stable interest rate. Real saving journeys include emergencies, windfalls, and rate changes — especially in easy-access products. The figure is a direction of travel, not a guarantee.
Where to go next
This calculation rarely sits alone in a planning exercise. If you're running these numbers, you'll probably also want the compound interest calculator, the recurring deposit calculator, and the fixed deposit rollover calculator — each one answers a different question in the same territory. Treating them as a set rather than in isolation usually produces a more honest picture.
A fixed deposit of £10,000 at 5% annual interest over 24 months matures to 11,049.41.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
This calculator computes the maturity value of a fixed deposit using the compound interest formula. It multiplies the principal by the compound growth factor, which is calculated by raising one plus the periodic interest rate to the power of the number of compounding periods. The annual interest rate is converted to a monthly rate and applied across the term in months, assuming interest compounds monthly. The model treats the interest rate as fixed and constant throughout the deposit term, with no withdrawals, additions, or fee deductions applied. Results represent the theoretical maturity value under these assumptions. The actual maturity amount may differ if the product specifies a different compounding frequency (such as quarterly or annual), applies fees, or adjusts rates during the term. Users should verify the specific terms of their deposit product.
References
Frequently Asked Questions
Monthly vs yearly compounding?
Early withdrawal penalty?
Auto-renewal risk?
FD vs high-interest savings?
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