Archive · 24 Aug 2026
₹10 Crore in 15 Years: SIP Math, Returns and Inflation
Aman wants to save ₹10 crore over the next 15 years.
He plans to invest money every month through a mutual fund SIP.
If he invests the same amount each month and earns about 12% annually, he may need nearly ₹2 lakh per month.
He could instead start with about ₹1.15 lakh per month and increase the investment by 10% every year.
Under that plan, his monthly investment could reach about ₹4.37 lakh in the final year.
The result depends heavily on how much the investments earn.
Lower returns mean he must invest more, while higher returns mean he may invest less.
Inflation also means that ₹10 crore in 2041 will buy much less than ₹10 crore buys today.
A 30-year-old corporate employee named Aman wants to build a ₹10-crore corpus in 15 years.
At an assumed 12% annual return, a flat SIP would require about ₹1.98 lakh to ₹2 lakh monthly.
A 10% annual step-up SIP could begin at ₹1.15 lakh monthly and reach about ₹4.37 lakh by year 15.
At 8% returns, the required monthly SIP rises to about ₹2.87 lakh, while 15% returns reduce it to about ₹1.48 lakh.
With 6% annual inflation, ₹10 crore in 2041 would have purchasing power of roughly ₹4.2 crore today, requiring an estimated ₹24-crore target for equivalent value.
- Who
- Aman, a 30-year-old corporate employee with a high salary.
- What
- He is planning how much to invest through SIPs to build a ₹10-crore corpus in 15 years.
- When
- The example begins in 2026 and targets 2041, after 15 years.
- Why
- To determine the monthly investment needed for a future ₹10-crore goal while accounting for returns and inflation.
- Target corpus
- ₹10 crore after 15 years
- Flat SIP at 12%
- Approximately ₹1.98 lakh to ₹2 lakh per month
- Step-up SIP
- Starts at about ₹1.15 lakh monthly and rises 10% annually
- Final-year step-up amount
- Approximately ₹4.37 lakh per month
- Return sensitivity
- Required monthly SIP ranges from about ₹2.87 lakh at 8% returns to ₹1.48 lakh at 15% returns
- Inflation assumption
- At 6% inflation, ₹10 crore in 15 years would have purchasing power of roughly ₹4.2 crore today
- Inflation-adjusted target
- Approximately ₹24 crore would be needed to match ₹10 crore's current purchasing power