Power of Compounding (time-based)

See the dramatic impact of starting early vs late with the power of compounding. Compare wealth of two investors with different start ages on the same monthly SIP.

Power of Compounding Calculator

Early vs late investor — the dramatic rupee cost of starting later

Monthly SIP amount Rs 5,000
Rs 500Rs 1L
Rs
Expected CAGR 12%
6%20%
%
Early starter age Age 25
yrs
Late starter age Age 35
yrs
Retirement age Age 60
yrs
Early starter corpus
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starting earlier wins
Late starter corpus
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starting later
Extra wealth from starting early
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the time advantage
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Late starter investment---
Late starter corpus at retirement---
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Early vs late starter corpus
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Late starter: ---

Estimates for personal financial planning. Consult a financial advisor for personalised advice.

Corpus growth over time — early vs late investor
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ThriftRupee Insight

Ramesh starts SIP of Rs 5,000/month at age 25 and stops at 35 (10 years, Rs 6 lakh invested). Suresh starts SIP of Rs 5,000/month at 35 and continues till 60 (25 years, Rs 15 lakh invested). At 60 at 12% returns: Ramesh has Rs 1.76 crore. Suresh has Rs 94 lakh. Ramesh invested Rs 9 lakh LESS but ends up with Rs 82 lakh MORE — purely because of compounding time.

Power of Compounding — Why Starting Early Matters So Much

Starting a SIP 10 years earlier can double your retirement corpus — even if you invest the same monthly amount. The early years of a SIP are not the most productive in absolute terms, but they provide the longest compounding runway for the final years when growth is exponential.

Frequently asked questions

How does starting age affect wealth at retirement?▼
Starting 10 years earlier roughly doubles your final corpus due to compounding. Starting at 25 vs 35 with the same monthly SIP of Rs 10,000 at 12% CAGR: 25-year-old accumulates Rs 3.5 crore by 60; 35-year-old accumulates Rs 94 lakh by 60. The 25-year-old invested Rs 12 lakh more but ends up with Rs 2.56 crore more — the time difference does the heavy lifting.
What is the relationship between time, rate, and final corpus?▼
Final corpus is exponentially sensitive to time and rate: doubling time = 72/rate. At 12%: doubles every 6 years. At 6%: doubles every 12 years. For a 30-year investment: 12% turns Rs 1 lakh into Rs 29.96 lakh. 6% turns Rs 1 lakh into Rs 5.74 lakh — a 5× difference for a 2× rate difference. Time amplifies return differences dramatically.
Is it too late to start investing at 40?▼
It is never too late to start — but the strategy changes. At 40, you have 20 years to retirement (assuming 60). Rs 15,000/month SIP at 12% for 20 years = Rs 1.5 crore. That is a meaningful corpus, though less than what starting at 25 would yield. At 40, increase savings rate aggressively, cut unnecessary expenses, and consider working longer (till 65) to maximise compounding time.

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