Compound Interest Calculator 2026
Calculate power of compound interest across daily, monthly, quarterly, and annual compounding frequencies
Your money becomes
2.6×
of what you put in over 10 years.
Invested vs Interest
₹1.00 L
₹1.59 L
Interest is 61.4% of final value
Year-by-year breakdown
| Year | Total contributed | Interest earned | Value |
|---|---|---|---|
| 1 | ₹1.00 L | ₹10,000 | ₹1.10 L |
| 2 | ₹1.00 L | ₹11,000 | ₹1.21 L |
| 3 | ₹1.00 L | ₹12,100 | ₹1.33 L |
| 4 | ₹1.00 L | ₹13,310 | ₹1.46 L |
| 5 | ₹1.00 L | ₹14,641 | ₹1.61 L |
| 6 | ₹1.00 L | ₹16,105 | ₹1.77 L |
| 7 | ₹1.00 L | ₹17,716 | ₹1.95 L |
| 8 | ₹1.00 L | ₹19,487 | ₹2.14 L |
| 9 | ₹1.00 L | ₹21,436 | ₹2.36 L |
| 10 | ₹1.00 L | ₹23,579 | ₹2.59 L |
Growth over time
The gap between the two lines is the interest earned — and it widens every year.
The Mathematics of Exponential Compounding: Why Linear Thinking Misses Wealth Creation
Compound interest represents earning interest upon previously accumulated interest. In simple interest, returns scale linearly; in compound interest, growth scales geometrically along an exponential curve where the slope steepens dramatically after the 10th and 15th year marks.
Where n represents compounding frequency (n=12 for monthly, n=4 for quarterly, n=365 for daily), and t is total investment tenure.
Compound Interest FAQs
Deep mathematical insights into geometric compounding.
How does compounding frequency impact terminal wealth?
More frequent compounding intervals (e.g. daily or monthly vs annual) result in slightly higher effective annual yields (APY) because earned interest is reinvested into the principal balance sooner.
What is the "Rule of 72" in personal finance?
The Rule of 72 is a mental shortcut to determine how many years it takes for your investment capital to double: Years to Double ≈ 72 ÷ Annual Interest Rate.
Investment
Compare calculations across closely related financial tools in this category.
Direct Peer & Companion Calculators
6 tools availableGoal Protection & Long-Term Compounding
Protect your family goals against 10%+ inflation with structured assets.
Safe Withdrawal Rate (SWR) for Indian Retirement, Explained
Why lower SWR requires a bigger corpus, the water tank analogy, inflation-adjusted retirement models, and a worked ₹12L cash-flow example.
Quick 1-Click Goal & Amount Presets
Long-Tail pSEO Target PresetsInvestment
Compare calculations across closely related financial tools in this category.
Direct Peer & Companion Calculators
6 tools availableGoal Protection & Long-Term Compounding
Protect your family goals against 10%+ inflation with structured assets.
Safe Withdrawal Rate (SWR) for Indian Retirement, Explained
Why lower SWR requires a bigger corpus, the water tank analogy, inflation-adjusted retirement models, and a worked ₹12L cash-flow example.