Inflation-Adjusted SIP Calculator (Real Purchasing Power)

See what your future SIP corpus is worth in today’s purchasing power after discounting for CPI inflation.

Inflation-Adjusted Maturity Value (Today’s Rupees)
₹62,30,781
₹62.31 L in today’s purchasing power (Nominal: ₹2 Cr)
Nominal Future Balance ₹1,99,82,958
Fisher Real Annual Return 5.66% p.a.
Inflation Purchasing-Power Drag ₹1,37,52,178
Total Nominal Capital Invested ₹48,00,000
Inputs
₹ / mo
Monthly mutual fund SIP deposit.
% p.a.
Nominal market return before inflation.
% p.a.
Long-term consumer price inflation rate.
years
Total investment years.
% / yr
Step up your SIP by at least the inflation rate to preserve contribution purchasing power.
Results & Graph
Inflation-Adjusted Maturity Value (Today’s Rupees)
₹62,30,781
₹62.31 L in today’s purchasing power (Nominal: ₹2 Cr)
Nominal Future Balance
₹1,99,82,958
₹2 Cr
Fisher Real Annual Return
5.66% p.a.
12% nominal vs 6% CPI
Inflation Purchasing-Power Drag
₹1,37,52,178
68.8% discount factor
Total Nominal Capital Invested
₹48,00,000

Real Purchasing Power vs. Inflation Erosion by Year

Decomposition of nominal maturity balance into real value and inflation discount
Graph 1 • Real Purchasing Power vs. Inflation Erosion by Year Decomposition of nominal maturity balance into real value and inflation discount
0 5.00M 9.99M 15.0M 20.0M Yr 1Yr 5Yr 9Yr 13Yr 17Yr 20
Graph 2 • Latest Period Component Values Values retain their calculator-defined labels and units.
Real Value in Today’s ₹ 6,230,781 INR Inflation Erosion (₹) 13,752,178 INR
Graph 3 • Inflation-Adjusted Balance Under Return Assumptions Uses the entered 20-year horizon, discounted at 6% inflation.
0 5.89M 11.8M 8.0%: 3,697,675 3.70M 8.0% 10.0%: 4,774,958 4.77M 10.0% 12.0%: 6,230,781 6.23M 12.0% 14.0%: 8,208,860 8.21M 14.0% 16.0%: 10,909,803 10.9M 16.0%
Summary: Nominal balance is ₹1,99,82,958 and inflation-adjusted real balance is ₹62,30,781.
Summary: At 12% nominal return and 6% annual inflation, your Fisher real rate of return is 5.66% p.a. Over 20 years, your SIP grows to a nominal statement balance of ₹1,99,82,958 (₹2 Cr), which has the real purchasing power of ₹62,30,781 (₹62.31 L) in today’s prices.

Nominal vs. Inflation-Adjusted SIP Schedule

YearCumulative InvestedNominal BalanceReal Purchasing Power (Today’s ₹)
Year 1₹2,40,000₹2,56,187₹2,41,685
Year 2₹4,80,000₹5,44,864₹4,84,927
Year 3₹7,20,000₹8,70,153₹7,30,597
Year 4₹9,60,000₹12,36,697₹9,79,580
Year 5₹12,00,000₹16,49,727₹12,32,772
Year 6₹14,40,000₹21,15,141₹14,91,091
Year 7₹16,80,000₹26,39,580₹17,55,471
Year 8₹19,20,000₹32,30,531₹20,26,875
Year 9₹21,60,000₹38,96,430₹23,06,291
Year 10₹24,00,000₹46,46,782₹25,94,739
Year 11₹26,40,000₹54,92,296₹28,93,273
Year 12₹28,80,000₹64,45,043₹32,02,989
Year 13₹31,20,000₹75,18,623₹35,25,024
Year 14₹33,60,000₹87,28,359₹38,60,562
Year 15₹36,00,000₹1,00,91,520₹42,10,839
Year 16₹38,40,000₹1,16,27,564₹45,77,147
Year 17₹40,80,000₹1,33,58,417₹49,60,841
Year 18₹43,20,000₹1,53,08,785₹53,63,338
Year 19₹45,60,000₹1,75,06,508₹57,86,129
Year 20₹48,00,000₹1,99,82,958₹62,30,781

Formula & Mathematical Methodology: Present-Value Purchasing Power Deflator & Fisher Real Rate

FVreal = FVnominal(1 + π)Y,   rreal = 1 + r1 + π − 1
FV_real = FV_nominal / (1 + π)^Y; r_real = [ (1 + r) / (1 + π) ] − 1
  • FVnominal: Unadjusted future rupee balance at year Y
  • π: Annual inflation rate (decimal)
  • rreal: Exact Fisher inflation-adjusted annual return rate

Rounding: Rounded to nearest rupee; Fisher real rate rounded to 2 decimal places.

Worked Example: ₹20,000/Month SIP for 20 Years at 12% Nominal Return and 6% Inflation

Evaluate both nominal and today’s purchasing-power value of a 20-year ₹20,000/month SIP.

  1. Over 20 years (240 months), ₹48,00,000 invested grows nominally to ₹1,99,82,958 (~₹2.00 Cr).
  2. Discounting by (1.06)^20 = 3.207135 gives a real value of ₹62,30,781 in today’s purchasing power.
  3. Fisher real annual return = (1.12 ÷ 1.06) − 1 = 5.66% p.a.
Result: Nominal balance is ₹2.00 Cr, worth ₹62.31 Lakhs in today’s rupees.

Frequently Asked Questions

How do I protect my SIP from inflation erosion?

Combine an equity return that beats inflation with an Annual Step-Up SIP equal to or greater than the inflation rate (e.g., 6%–10% annual step-up).

Finance & Investing • Mutual Funds & India Investing Guide

How to Use the Inflation-Adjusted SIP Calculator (Real Purchasing Power): Practical Guide & Visual Analysis

Translate future nominal crore figures into today’s real rupees by discounting each year’s SIP balance by expected CPI inflation and computing the exact Fisher real return. Whether you are researching real value sip calculator, sip with inflation calculator, purchasing power sip, fisher real return sip, this interactive tool helps you calculate the inflation-adjusted real value of a SIP maturity corpus in today’s rupees along with the Fisher real annual rate of return.

Interpreting the 3 Custom Visual Graphs & Key Outputs

As you adjust Monthly SIP Amount, Expected Nominal Annual Return, Expected Annual CPI Inflation, Investment Horizon, the calculator immediately computes Real Purchasing-Power Corpus (Today’s ₹), Nominal Maturity Balance (₹), Fisher Real Return Rate (% p.a.), Inflation Purchasing-Power Drag (₹) and updates all three domain-specific SVG charts in real time. Instead of relying on a single static figure, you can inspect the primary domain diagram, component breakdown, and multi-point trajectory curve to see how changing your inputs shifts the final result. Use the Compare (up to 3 scenarios) button to evaluate side-by-side variations before making a decision.

Real-World Benchmark & Planning Tips (India & Global)

In our benchmark scenario (₹20,000/Month SIP for 20 Years at 12% Nominal Return and 6% Inflation), Nominal balance is ₹2.00 Cr, worth ₹62.31 Lakhs in today’s rupees. Keep in mind that inflation compounds annually at a constant rate π over the investment horizon. For related calculations in Finance & Investing, explore SIP Calculator (Systematic Investment Plan), Step-Up SIP Calculator (% & Fixed ₹ Top-Up), Target Goal SIP Calculator (Reverse SIP Solver), All-in-One Real Wealth SIP Calculator (Step-Up + Lump Sum + TER + Tax + Inflation).