Crorepati Calculator

What is a Crorepati Calculator?

A crorepati calculator works in reverse: you tell it how much money you want and by when, and it tells you the exact monthly SIP you need to start today.

Most people know the forward calculation — "I'll invest ₹10,000/month, what will I get?" — but that's a guess. The reverse SIP approach starts with the goal and works backwards, giving you a concrete action plan instead of a vague aspiration.

This calculator has three modes:

1. How much to invest? — Enter your target (₹1 crore, ₹2 crore, etc.), years, and return assumption. Get the monthly SIP.
2. When will I get there? — Enter what you already invest. See when you'll cross each milestone.
3. Step-up vs Flat — Compare a flat SIP with a step-up SIP (10% higher each year). Same goal, different monthly burdens.

Reverse SIP calculator: the formula explained

SIP uses the future value of an annuity-due (start-of-month payments):

Where P is the monthly SIP, r = annual rate ÷ 12, and n = years × 12.

Flip it to find the monthly SIP for a given FV:

A common error is dividing the annual rate by 12 (e.g. treating 12% p.a. as 1%/month). The correct monthly rate is (1 + 0.12)^(1/12) − 1 ≈ 0.949%. This calculator uses the mathematically correct conversion throughout.

Why ₹1 crore might not be enough — the inflation trap

Most crorepati calculators ignore inflation. That's a significant blind spot.

At India's average CPI inflation of roughly 6% per year, ₹1 crore in 15 years is worth only about ₹42 lakh in today's money. If your current monthly expenses are ₹60,000, then ₹42 lakh is less than six years of living expenses.

The right framing: don't target a number, target a purchasing power. If you want ₹1 crore worth of purchasing power 15 years from now, your nominal target is:

The inflation reality check in Tab 1 of the calculator does this conversion automatically. Toggle it on to see both the nominal and real targets side by side.

Step-up SIP: invest less today, more tomorrow

A step-up SIP increases your monthly investment by a fixed percentage each year — typically 10%, tracking the average annual salary increment in India.

For reaching ₹1 crore in 15 years at 12% return:

• Flat SIP: ₹20,020/month for all 180 months. Total invested: ₹36 lakh.
• Step-up SIP at 10%/yr: Starts at ₹12,950/month (Year 1), rises to ₹51,000/month by Year 15. Total invested: ~₹30 lakh.

The step-up approach invests about ₹6 lakh less in total while reaching the same corpus. The trade-off: your SIP burden in Year 15 is 4× what it was in Year 1. If your salary grows at 10% annually (as most corporate jobs in India do), this is very manageable — your SIP grows in lockstep with your pay.

₹1 crore — how many years of expenses does it cover?

The number alone means nothing without context. How long ₹1 crore lasts depends entirely on your monthly spending. The table below uses simple division (no investment returns during the withdrawal phase) to show the raw picture:

The "25-yr retirement" column uses the 300× monthly spend rule (25 years × 12 months). In practice, if your corpus earns 7–8% during retirement, the same corpus lasts significantly longer — use the SWP Calculator to model your exact drawdown with returns.

The key insight: for most urban Indian households spending ₹75,000–₹1,50,000/month, ₹1 crore is a starting point, not a finish line. The Lump sum + SIP tab above lets you model a hybrid strategy once you have an existing corpus and want to top it up.

Direct plan vs regular plan: the hidden return killer

Every mutual fund in India offers two variants: a direct plan (bought directly from the AMC or through a direct platform) and a regular plan (bought through a broker or distributor who earns a trail commission baked into the expense ratio). That commission — typically 0.75–1.5% per year — comes straight off your annual return.

On the same ₹20,000/month SIP over 15 years (fund generates 12.25% gross):

The same SIP, the same fund, the same years — ₹13 lakh less at 15 years, ₹32 lakh less at 20 years. The gap compounds with time. Use a direct-only platform (Groww, Zerodha Coin, MF Central, or directly on AMC websites) to capture the full return the fund generates.

ELSS SIP: build ₹1 crore while saving tax

Equity Linked Savings Schemes (ELSS) are a sub-category of equity mutual funds with a 3-year lock-in period. They qualify for Section 80C deductions — up to ₹1.5 lakh per year — making them the only investment that simultaneously builds wealth and reduces your tax bill.

• ₹12,500/month ELSS SIP = ₹1,50,000/year — fully utilises the 80C limit.
• Tax saved per year: ₹45,000 at the 30% slab; ₹30,000 at the 20% slab. Over a 15-year horizon that is ₹6.75 lakh in tax savings at the 30% bracket alone.
• Lock-in: Each monthly instalment is locked for 3 years from its own investment date. After the 3-year window, units can be redeemed — but the overall SIP keeps running until you choose to stop.
• Tax on gains: After lock-in, LTCG rules apply — 12.5% on equity gains above ₹1.25 lakh per financial year (Finance Act 2024). This is the same as any other equity fund; the 80C deduction is a bonus on top.

For investors in the 20–30% tax bracket who haven't fully used their 80C limit, starting with an ELSS SIP before moving to a broader equity fund is often the optimal sequencing.

What to do when you're close to the goal: the glide path

Reaching ₹90 lakh in Year 14 of a 15-year plan feels like a win. But if markets fall 30% that year, your corpus drops to ₹63 lakh — and you need 5 more years to recover. This is sequence of returns risk, and it is the single biggest threat to a long equity SIP near its finish line.

The solution is a glide path: gradually reducing equity exposure as you approach the goal.

• 3–5 years before goal: Start a Systematic Transfer Plan (STP) from your equity fund to a short-duration or balanced fund. Transfer 5–10% of the equity corpus per year to reduce concentration.
• 1 year before goal: Keep 6–12 months of planned withdrawals in a liquid or ultra-short duration fund. The rest can remain in a conservative hybrid fund.
• After goal: Use an SWP (Systematic Withdrawal Plan) from a balanced or debt fund for monthly income rather than redeeming all at once. This keeps the remaining corpus working while you draw down.

The SWP Calculator can model how long your corpus lasts at various withdrawal rates and return assumptions, helping you calibrate the size of your SWP.

Related calculators

• SIP Calculator — forward mode: enter a monthly SIP, see what corpus it builds over time.
• Step-Up SIP Calculator — dedicated step-up mode with year-by-year growth table and corpus vs flat comparison.
• SWP Calculator — once you reach your target corpus, plan your systematic withdrawals and see how long the money lasts.
• CAGR Calculator — if you already have a start and end value, compute the implied annual return.
• Prepay vs Invest Calculator — should you use your bonus or monthly surplus to prepay a loan or invest for your crore goal? Side-by-side post-tax comparison.
• Cost of Delay Calculator — see the exact corpus you give up for every year you wait to start investing. SIP, lump sum, step-up, and hybrid modes.
• Capital Gains Tax Calculator — plan your exit strategy: understand LTCG on equity (12.5% above ₹1.25L) and how it affects your final corpus.

Common mistakes when planning for ₹1 crore

Treating ₹1 crore as a fixed, inflation-free number

₹1 crore 20 years from now is worth ₹31 lakh in today's money at 6% inflation. Always state goals in real terms.

Using simple monthly rate (annual ÷ 12)

12% ÷ 12 = 1%/month implies 12.68% annually (compounding effect). The correct monthly rate for 12% p.a. is 0.949%.

Ignoring taxes on withdrawal

Equity MF gains over ₹1.25 lakh/year are taxed at 12.5% LTCG (Finance Act 2024). Worked example: ₹20,020/month SIP for 15 years at 12% p.a. → ₹1 crore corpus; total invested ≈ ₹36 lakh; taxable gain ≈ ₹64 lakh. After the ₹1.25L annual exemption, LTCG = ₹62.75L × 12.5% = ~₹7,844 in tax. Net proceeds ≈ ₹92.2 lakh, not ₹1 crore. To net ₹1 crore after tax, set your nominal target to approximately ₹1.09 crore.

Assuming constant returns

Markets don't return 12% every year. There will be bad years (−20% to −40%) during your accumulation phase. A 15-year SIP historically still captures 12%+ CAGR for Indian equity indices, but with volatility along the way.

Stopping SIP during a market crash

The worst time to stop is exactly when markets are down. Rupee Cost Averaging (RCA) makes crashes work in your favour. Example: Month 1, NAV = ₹100, SIP = ₹10,000 → 100 units. Market falls 50%. Month 2, NAV = ₹50, SIP = ₹10,000 → 200 units. Average cost = ₹20,000 ÷ 300 units = ₹66.67/unit. When NAV recovers to ₹100, your portfolio = ₹30,000 on ₹20,000 invested — a 50% return. Had you paused Month 2, only 100 units at breakeven. Crashes are not a reason to pause; they are the mechanism that makes SIP work.

Frequently asked questions