Inflation-Adjusted SIP CalculatorWhat ₹1 crore in 20 years actually buys
₹1 crore sounds impressive — but with 6% inflation, it'll have the buying power of about ₹31 lakh today. See your SIP's nominal and real corpus side-by-side.
Investment Inputs
Nominal vs Real
Nominal Corpus
₹99.91 L
What the statement will show
Real Purchasing Power
₹31.15 L
In today's money
Erosion from inflation
- ₹68.76 L
Real return: 5.66% (vs nominal 12%)
Why inflation matters more than you think
At 6% inflation, prices double every ~12 years. Something costing ₹1 lakh today will cost roughly ₹3.2 lakh in 20 years. If your SIP returns 12% nominal but inflation runs at 6%, your real return is only ~5.66% — the Fisher equation, not simple subtraction.
Real return formula: (1 + nominal) / (1 + inflation) − 1.
How to plan in real terms
- Set goals in today's money, then inflate them to the goal date.
- Use a real return assumption (typically 5–7% for equity) when sizing your SIP.
- For goals more than 20 years out, use education/healthcare inflation (8–10%), not headline CPI.
How to Use the Inflation-Adjusted SIP Calculator
The trick to inflation planning is honesty — about both returns and the inflation rate that actually applies to your specific goal. Headline CPI rarely matches what you\'ll actually pay.
Enter your monthly SIP and horizon
Use the contribution you already make (or plan to start). The horizon should match a real goal date — retirement at 60, child's undergrad at 18, etc.
Set a nominal return you can defend
For Indian equity diversified funds, 12% is standard; 10% is conservative; 14% only if you're heavy in mid/small-cap. The lower you set this, the bigger your real shortfall will look.
Pick the inflation rate that matches your goal
Use 6% for general lifestyle, 8% for school/college fees, 10% for private healthcare, 4% only for very conservative planning. Use one rate per goal, not a blanket number.
Read the real corpus, not the nominal one
The nominal number is what your statement will display. The real number is what your future self can actually buy with it — that's the figure that should drive every plan adjustment.
Adjust SIP, step-up, or horizon until real value meets the goal
If real corpus is short of your target (in today's money), increase the monthly SIP, add a step-up via our Step-up calculator, or extend by 2–5 years. Do not just hope returns will beat the assumption.
Priya, 32 — Product Manager in Hyderabad
Priya earns ₹22 LPA and starts a ₹25,000/month SIP for retirement at 60. The fund returns 12% nominal and she assumes 6% headline inflation. On paper her corpus will look enormous — but how much will it actually buy in 2052?
Nominal Corpus (28 yrs)
₹6.27 Cr
Invested: ₹84 L
Real Value in Today\'s ₹
₹1.22 Cr
Real return ~5.66%
Erosion to inflation
- ₹5.05 Cr
80% of headline value
What Priya learns: her ₹6.27 Cr will only buy what ₹1.22 Cr buys today — about a 2BHK in HSR Layout, not the lifestyle she imagined. To actually retire at her current standard, she needs to either double the SIP, add a 10% annual step-up, or push retirement to 62. The chart shows it bluntly: the nominal line and real line diverge dramatically after year 15.
Common Inflation Planning Mistakes
Most investors plan in nominal numbers and get a rude shock at goal date. These are the specific errors that cause the gap.
Setting a goal in future rupees by accident
When you say "I need ₹5 Cr at retirement", you're probably picturing today's lifestyle. ₹5 Cr in 2052 buys roughly what ₹97 lakh buys today at 6% inflation — a massive lifestyle downgrade.
Using headline CPI for medical expenses
Indian private healthcare inflates at 10–14% — bypass surgery costing ₹3.5 L today will run ₹25 L in 20 years. If you're planning a health corpus, do not use 6%.
Ignoring education inflation for kid's college
IIT/IIM/private engineering fees have grown 8–10% annually. A ₹40 L MBA today may cost ₹2 Cr+ in 18 years. Plan child's education at 8%, not 6%.
Subtracting inflation from returns directly
12% nominal − 6% inflation ≠ 6% real. The correct math is (1.12/1.06) − 1 = 5.66%. Small difference per year, big difference over 25 years — overstating your real return by even 0.5% can leave you ₹50 L+ short.
Parking long-term money in FDs
FDs paying 6.5–7% in a 6% inflation world give ~0.5–1% real return. Over 20 years that's a corpus less than half what a 12% equity SIP delivers. FDs are for emergencies and goals under 3 years, not retirement.
Pro Strategies for Inflation-Proof Goals
Inflation isn\'t a single number — it\'s different for retirement, education, healthcare, and lifestyle. These tactics keep your real corpus on track.
Use category-specific inflation per goal
Run separate SIPs with separate inflation assumptions: 8% for child's education, 10% for healthcare corpus, 6% for general retirement. Aggregating into one assumption almost always under-provisions the high-inflation goal.
Pair a step-up SIP with inflation planning
A 10% annual SIP step-up roughly matches India's nominal salary growth and offsets inflation drag automatically. Without it, the real value of your monthly contribution shrinks every year.
Build a small inflation hedge sleeve
Allocate 5–10% of your SIP to gold ETFs/SGBs or an infrastructure fund. These don't outperform equity, but they hedge against unexpected inflation spikes (which equity sometimes does badly in for 2–3 years).
Recompute real value every 2 years
Inflation regimes shift — India saw 2.5% inflation in 2017 and 7.5% in 2022. Re-run this calculator with refreshed assumptions every couple of years and adjust SIPs before your plan diverges from reality.
Use tax-efficient vehicles in the old regime
ELSS (under 80C) gives an immediate 30% tax shield, effectively boosting your real return by 1–1.5% per year for the first ₹1.5 L invested. Combine with equity LTCG of 12.5% above ₹1.25 L/year — still the lowest long-term tax bracket among investment options.
Inflation-Adjusted SIP FAQ
QWhat's the difference between nominal and real returns?
Nominal return is the headline rate (e.g., 12% from your SIP). Real return is what's left after stripping out inflation. If nominal is 12% and inflation is 6%, real return is about 5.66%, not 6%. Use real returns for goal planning.
QWhat inflation rate should I assume for India?
Headline CPI averages 5–6% long-term. Use 4% for conservative planning, 6% for general goals, 8% for education costs, and 10% for private healthcare. The right number depends on what your future money will buy.
QHow do I plan a goal in inflation-adjusted terms?
Decide the cost in today's money. Multiply by (1 + inflation)^years to get the future cost. Then use a goal-based SIP calculator to find the monthly contribution at your expected nominal return.
QDoes inflation affect every asset the same way?
No. Cash and bonds get hurt most. Equities have historically beaten inflation by 6–8% per year. Gold and real estate roughly track inflation over very long periods. That's why long-horizon goals favour equity-heavy SIPs.
QIs the real-return formula just subtraction?
Approximately, but technically wrong. Use the Fisher equation: real = (1 + nominal) / (1 + inflation) − 1. The difference is small at low rates but grows when both are high.
QWhy is CPI so different from my actual cost-of-living increase?
CPI weights rural and urban India together and includes regulated items like fuel and food grains. Urban middle-class spending (rent, schooling, healthcare, eating out, travel) often inflates at 8–10% — well above the 5–6% headline. Use your own basket as the benchmark.
QShould I increase my SIP every year just to keep up with inflation?
Yes — that's exactly what a Step-up SIP does. A 6–8% annual top-up preserves the real purchasing power of your monthly contribution. Without it, year-15 ₹10,000 only buys what year-1 ₹4,200 bought.
QHow does inflation affect SWP withdrawals in retirement?
If you withdraw a flat ₹50,000/month from age 60, it will only buy what ₹15,500 buys today by age 80 (at 6% inflation). Always size SWP withdrawals to grow ~6% annually, and pair this calculator with our SWP Calculator for retirement modelling.
QDoes tax further reduce real return?
Yes. Equity LTCG of 12.5% above ₹1.25 L/year typically trims your effective real return by another 0.5–1%. Debt funds are taxed at your slab rate (potentially 30%), so post-tax real returns there can be near zero or negative in high-inflation years.
QWhy does the gap widen so dramatically after year 15 on the chart?
Compounding works in both directions. The nominal corpus grows exponentially, but so does the inflation drag. After 15 years the gap between the two lines starts diverging visually because the absolute rupee values are both very large — making the real shortfall easier to see.
QShould I use real return directly in the basic SIP calculator instead?
You can, and it's a useful shortcut. Set the return rate to ~5–6% (instead of 12%) and you get the real corpus directly. The drawback: you lose the ability to see the nominal headline figure your statement will show.
QIs inflation the same in 10-year and 30-year horizons?
Not necessarily. India's 30-year inflation has averaged ~7%, while the last decade averaged closer to 5.5%. For very long horizons, use 6.5–7%; for sub-10-year goals, 5.5–6% reflects current RBI targets better.
Related Calculators
Tools that pair with real-value planning
Basic SIP Calculator
Project your SIP in nominal rupees as a baseline before adjusting for inflation.
Step-up SIP Calculator
Model annual contribution increases that automatically offset inflation drag.
FIRE Calculator
Plan early retirement using real-return assumptions and inflation-adjusted withdrawals.