Calculate how a one-time investment grows over time. Toggle inflation adjustment and choose compounding frequency to see real vs nominal returns.
$10,000 invested at 10% return for 20 years (monthly compounding) grows to $73,281 nominally. Adjusted for 3% inflation, the real purchasing power is about $40,580. Your money doubles every ~7.2 years at 10% (Rule of 72).
| Return Rate | Nominal Value | Real Value (3% infl.) | Total Gain | Doubles In |
|---|---|---|---|---|
| 5% | $27,015 | $14,963 | $17,015 | 14.4 yrs |
| 7% | $40,387 | $22,371 | $30,387 | 10.3 yrs |
| 10% | $73,281 | $40,580 | $63,281 | 7.2 yrs |
| 12% | $107,652 | $59,624 | $97,652 | 6.0 yrs |
| 15% | $190,435 | $105,465 | $180,435 | 4.8 yrs |
| Years | Nominal Value | Real Value (3% infl.) | Total Return |
|---|---|---|---|
| 5 | $16,453 | $14,190 | 64.5% |
| 10 | $27,070 | $20,137 | 170.7% |
| 15 | $44,539 | $28,570 | 345.4% |
| 20 | $73,281 | $40,580 | 632.8% |
| 30 | $198,374 | $81,738 | 1883.7% |
Nominal return is the raw number your investment grows to without considering inflation. If you invest $10,000 at 10% for 20 years, you get ~$73,281 nominally. But real return adjusts for inflation — at 3% inflation, that $73,281 is only worth ~$40,580 in today's purchasing power. The gap is your purchasing power loss ($32,701). This is why real returns matter more than headline numbers for long-term planning.
The Rule of 72 provides a quick doubling estimate: divide 72 by your return rate. At 10%, money doubles every ~7.2 years. At 7%, every ~10.3 years. Compare this with our SIP Calculator for regular investment scenarios or Compound Interest Calculator for more detail.
Investing a large amount all at once rather than spreading over time (SIP/DCA). Historically outperforms DCA ~65-70% of the time because markets trend upward.
At 10% with monthly compounding: ~$73,281 nominal, ~$40,580 real (3% inflation). At 7%: ~$40,387 nominal, ~$22,371 real.
Marginally. At 10% over 20 years on $10,000: daily = $73,891 vs monthly = $73,281 — only $610 difference. Return rate and time matter far more than compounding frequency.
Lump sum wins ~65-70% of the time statistically. SIP reduces timing risk and is emotionally easier. With a large sum and long horizon, lump sum usually wins.
Divide 72 by your annual return to estimate doubling time. At 10% = ~7.2 years. At 7% = ~10.3 years. Quick mental shortcut for compound growth.
Nominal = raw growth. Real = adjusted for inflation (actual purchasing power). $73,281 nominal at 3% inflation = only $40,580 real value in today's money.
Compound Annual Growth Rate — the smoothed annual return. $10,000 growing to $73,281 over 20 years = 10% CAGR. Best way to compare investments across different periods.
Investing a lump sum immediately outperforms waiting for a "better" time ~65-70% of the time. If your horizon is 10+ years, invest now rather than trying to time the market.
A 10% nominal return at 3% inflation is really ~6.8% real return. Toggle the inflation switch above to see what your money is actually worth in today's purchasing power.
Divide 72 by your return rate. At 10%, money doubles every ~7.2 years. At 7%, every ~10.3 years. Three doublings = 8× your money over ~21.6 years at 10%.
Monthly vs daily compounding makes only a marginal difference. Focus on maximizing your return rate and investment horizon — those two factors dominate.
Higher returns (10%+) come with higher volatility. Use 7% for balanced portfolios and 10% for equity-heavy allocations. For guaranteed returns, use the actual rate (FD, bond, etc).
Capital gains tax reduces your effective return. In a 15% LTCG tax environment, a 10% return becomes ~8.5% after tax. Factor this in for accurate planning.