Compound Interest Calculator
See what your money becomes when interest earns interest. Add a starting amount, an optional recurring deposit, and a rate of return to see the year-by-year growth curve.
Your Inputs
Estimate
Final amount after 10 years
₹10,85,086
Note: This is an estimate for planning purposes. Actual returns depend on the specific product, provider, and any fees or taxes that apply.
Balance by Year
Gold is what you put in, green is what interest added.
Year-by-Year Breakdown
| Year | Deposits | Interest | Balance |
|---|---|---|---|
| 1 | ₹1,60,000 | ₹8,000 | ₹1,68,000 |
| 2 | ₹2,20,000 | ₹21,440 | ₹2,41,440 |
| 3 | ₹2,80,000 | ₹40,755 | ₹3,20,755 |
| 4 | ₹3,40,000 | ₹66,416 | ₹4,06,416 |
| 5 | ₹4,00,000 | ₹98,929 | ₹4,98,929 |
| 6 | ₹4,60,000 | ₹1,38,843 | ₹5,98,843 |
| 7 | ₹5,20,000 | ₹1,86,751 | ₹7,06,751 |
| 8 | ₹5,80,000 | ₹2,43,291 | ₹8,23,291 |
| 9 | ₹6,40,000 | ₹3,09,154 | ₹9,49,154 |
| 10 | ₹7,00,000 | ₹3,85,086 | ₹10,85,086 |
Practical Pro Tips
Start as early as possible
Time in the market matters more than the amount you start with — even small sums compound significantly over decades.
Compounding frequency helps
Monthly compounding beats yearly compounding at the same stated rate — interest starts earning its own interest sooner.
Automate your deposits
Regular monthly contributions tend to grow faster overall than trying to save up for one large lump-sum deposit.
Reinvest, don't withdraw
Pulling out interest early breaks the compounding chain — leave it in so it keeps earning on itself.
Watch fees & taxes
Expense ratios, account charges and tax on interest quietly eat into your effective rate of return — check the net figure.
Review it once a year
Check whether actual returns are tracking your assumptions and adjust your deposits if you're falling behind your goal.
Frequently Asked Questions
What is compound interest?
Compound interest is interest calculated on your original deposit plus all the interest it has already earned. Because the base amount keeps growing, the amount of interest earned each period grows too.
How is it different from simple interest?
Simple interest is paid only on the original principal, so it grows in a straight line. Compound interest is paid on principal plus accumulated interest, so it grows faster the longer you leave it invested.
How do I use this calculator?
Enter a starting amount, an optional recurring deposit and how often you'll make it, an annual rate of return, how often it compounds, and the number of years. The chart and table update automatically.
Does compounding frequency really make a big difference?
It matters more as the rate and time period increase. Over short periods or low rates the gap is small, but over decades, monthly compounding can meaningfully outpace yearly compounding at the same stated rate.
Are the returns from this calculator guaranteed?
No. This tool assumes a constant rate of return for illustration. Real investments fluctuate, and actual returns depend on the specific product, provider, and any fees or taxes that apply.
What Is Compound Interest? (In Simple Words)
Simple interest is paid only on your original deposit. Compound interest is paid on your original deposit plus every bit of interest it has already earned, so the amount it's calculated on keeps growing each period.
Think of it like a snowball rolling downhill: it picks up more snow with every turn, so it grows faster the further it rolls.
Why Compounding Frequency Matters
The same annual rate pays out differently depending on how often it's applied:
| Frequency | Periods per Year | Effect |
|---|---|---|
| Yearly | 1 | Baseline growth |
| Half-yearly | 2 | Slightly faster than yearly |
| Quarterly | 4 | Noticeably faster over long periods |
| Monthly | 12 | Fastest growth for the same stated rate |
Want to turn this into an actual investment plan?
If you'd like help choosing the right instruments, deposit schedule, and tax-efficient structure for your goals, book a 15-minute review with our team.