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RupeeCase Education Hub · Free Tools

Financial Planning Toolkit

10 interactive calculators with educational guides. All free, no sign-up, built for Indian investors. Indian number formatting (Lakhs/Crores), real financial formulas, instant results.

5
Calculators
5
Quick Tools
10
Guides
Calculator

SIP Calculator

Calculate how a monthly Systematic Investment Plan compounds over time. Compare your expected return against RupeeCase systematic strategies (21% CAGR benchmark).

What is SIP?

A Systematic Investment Plan lets you invest a fixed amount monthly into mutual funds or stocks. Instead of timing the market, you invest consistently, this is called rupee cost averaging. When prices drop, you buy more units; when they rise, you buy fewer. Over time, this averages your cost basis.

The Formula

FV = SIP × ((1+r)^n − 1) / r + Corpus × (1+r)^n

Where r = monthly return rate (annual rate converted), n = total months. The first term is the future value of your SIP stream; the second is your existing corpus compounding.

Monthly SIP
Existing Corpus
Expected Return
Investment Period

Pro Tips

  • Start early, even ₹5,000/month grows to ₹1 Cr+ in 25 years at 15%.
  • Increase SIP with salary hikes (see Step-Up SIP below).
  • Don’t stop SIP during market dips, that’s when you buy cheap units.
Calculator

Step-Up SIP Calculator

See the massive difference when you increase your SIP annually. A 10% step-up can generate 40 to 60% more wealth over 20 years.

Why Step-Up?

Most people’s income grows 8 to 15% annually. If your SIP stays flat, you’re investing a smaller percentage of income each year. Step-Up SIP increases your investment annually, matching income growth and accelerating wealth creation.

The Impact

Year 1: ₹10K/month. Year 2: ₹11K (at 10% step-up). Year 3: ₹12.1K. Over 20 years, the step-up version invests significantly more, and each extra rupee compounds for the remaining years.

Monthly SIP
Annual Step-Up
Existing Corpus
Expected Return
Investment Period

Pro Tips

  • Match step-up to expected salary growth (8 to 12% for most salaried Indians).
  • Even 5% step-up makes a massive difference over 15+ years.
  • Review and increase every April when increments come through.
Calculator

Retirement Planner

Calculate the corpus you need to sustain expenses for 25 to 30 years post-retirement, adjusted for inflation. Find the monthly SIP required starting today.

Key Concepts

Inflation erodes purchasing power, ₹50K/month today equals ₹1.6L/month in 20 years at 6% inflation. Post-retirement, a conservative 8% return (debt + equity mix) is assumed. The calculator uses the present value of annuity formula.

The 4% Rule

Withdraw 4% of your corpus annually. If your corpus is ₹3 Cr, you can spend ₹12L/year (₹1L/month). This rule originated from US research (the Trinity Study) but works as a conservative guide for India too.

Current Age
Retirement Age
Monthly Expenses (today)
Current Savings
Inflation
Expected Return (pre-retire)
Life Expectancy

Pro Tips

  • Start retirement planning in your 20s, compounding rewards the early bird.
  • Account for healthcare costs separately (healthcare inflation runs 10 to 12% in India).
  • NPS + PPF can complement equity returns for the retirement corpus.
Calculator

FIRE Calculator

Financial Independence, Retire Early. Calculate your FIRE number using the 25x rule and compare three investment scenarios.

The 25x Rule

Your FIRE number = Annual Expenses × 25 (based on 4% safe withdrawal rate). If you spend ₹6L/year, you need ₹1.5 Cr. But don’t forget inflation, expenses at FIRE age will be much higher than today.

Three Scenarios

This calculator compares growth at 21% (RupeeCase systematic), 14% (Nifty 50 index), and 7% (Fixed Deposit) to show how strategy choice dramatically affects your FIRE timeline and passive income.

Monthly SIP
Current Age
FIRE Target Age
Current Corpus
Monthly Expenses
Inflation

Pro Tips

  • Cut expenses AND increase income for the fastest path to FIRE.
  • Healthcare is the biggest wildcard post-FIRE, budget for it separately.
  • Consider Lean FIRE (basic expenses only) vs Fat FIRE (comfortable lifestyle).
  • In India, rental income can serve as a passive income pillar alongside portfolio returns.
Calculator

Goal Planner

Set a financial goal, house, car, education, wedding, and find the monthly SIP needed to reach it. Includes an affordability check against your income.

Goal-Based Investing

Every financial goal needs a plan: a target amount, a timeline, and a monthly commitment. This calculator works backwards from your goal to find the SIP needed, accounting for existing savings that will compound.

Affordability Check

If the required SIP exceeds 30% of your income, consider extending the timeline or starting smaller. Under 20% is comfortable. The calculator shows SIP as a percentage of income and colour-codes it.

Goal Amount
Years to Goal
Expected Return
Existing Savings
Monthly Income

Pro Tips

  • Break large goals into smaller milestones for motivation.
  • Use separate SIPs for separate goals, don’t mix them.
  • Equity for 5+ year goals, debt/hybrid for shorter horizons.
Quick Tool

Capital Gains Tax Calculator

Calculate LTCG and STCG tax on equity investments using the post-July 2024 Union Budget rules.

Post-2024 Budget Rules

LTCG (held >12 months): taxed at 12.5% above ₹1.25L annual exemption (up from 10%/₹1L). STCG (held ≤12 months): taxed at 20% (up from 15%). Applies to listed equities and equity-oriented mutual funds.

Tax-Loss Harvesting

You can book losses to offset gains. If you have ₹2L LTCG and ₹75K LTCL, net taxable LTCG = ₹1.25L, which falls within the exemption. Zero tax. Review your portfolio in March for harvesting opportunities.

Buy Price (per unit)
Sell Price (per unit)
Quantity
Holding Period

Pro Tips

  • Hold winners past 12 months when possible to get LTCG rates.
  • Use the ₹1.25L LTCG exemption every year, don’t let it lapse.
  • Surcharge and cess are additional (not included here), consult a CA for exact liability.
Quick Tool

Expense Ratio Impact Calculator

See how even a small difference in fund fees compounds into a massive wealth gap over decades.

What is Expense Ratio?

The annual fee charged by mutual funds, expressed as a % of assets. A 1.5% ER means ₹1,500/year for every ₹1L invested. Direct plans have 0.5 to 1% lower ERs than regular plans.

The Compounding Drag

A fund earning 12% gross with 1.5% ER gives 10.5% net. Over 20 years, ₹10L at 12% = ₹96.5L, but at 10.5% = ₹73.7L. That’s ₹22.8L lost to fees alone.

Investment Amount
Fund A Expense Ratio
Fund B Expense Ratio
Gross Return (both funds)
Investment Period

Pro Tips

  • Always choose Direct plans (available on AMC websites, Coin, Kuvera, MFCentral).
  • Index funds have the lowest ERs: 0.1 to 0.3%.
  • Compare ERs before investing, even 0.3% difference matters over decades.
Quick Tool

Lump Sum vs SIP Comparison

Should you invest a large sum all at once, or spread it via SIP? Compare both approaches over your chosen holding period.

When Lump Sum Wins

In consistently rising markets, investing everything immediately gives maximum time in the market. Academic research (Vanguard, 2012) shows lump sum outperforms SIP ~67% of the time. “Time in market beats timing the market.”

When SIP Wins

In volatile or declining markets, SIP averages your cost basis. If markets drop 20% then recover, SIP buys more units at lower prices. For uncertain times, a 50/50 split (half lump sum + half SIP) can be a pragmatic compromise.

Total Amount
Expected Return
SIP Spread Period
Total Holding Period

Pro Tips

  • For inheritance or bonus: consider 50% lump sum + 50% via 6 to 12 month SIP.
  • For regular salary income, SIP is the natural choice.
  • Don’t let perfect be the enemy of good, invest, don’t wait.
Quick Tool

Inflation Eroder

See how inflation silently destroys your purchasing power over time. A wake-up call for anyone keeping money in savings accounts.

What is Inflation?

The gradual increase in prices over time. India’s long-term CPI inflation averages 5 to 7%. This means ₹1L today buys only ₹31K worth of goods in 20 years at 6% inflation.

India-Specific

Food inflation can be higher than headline CPI. Healthcare inflation runs at 10 to 12%. Education inflation is 8 to 10%. Real estate varies by city. Plan for category-specific inflation, not just the CPI number.

Amount Today
Inflation Rate
Years Ahead

Pro Tips

  • Never keep large sums in savings accounts (3.5% < inflation = guaranteed loss).
  • Equity is the only asset class that consistently beats inflation over long periods.
  • Real estate rent typically grows with inflation, factor that into retirement planning.
Quick Tool

Rule of 72

The quickest mental math trick in investing: divide 72 by the annual return to estimate doubling time. Works for returns, inflation, and debt.

How It Works

72 ÷ Annual Return = Years to Double. At 12%, money doubles in ~6 years. At 8%, in ~9 years. It’s an approximation of ln(2)/ln(1+r), most accurate for rates between 6 to 20%.

Beyond Investing

Works for inflation too: at 6% inflation, prices double every 12 years. For debt: at 18% credit card interest, your debt doubles in 4 years. Use Rule of 114 for tripling, Rule of 144 for quadrupling.

Annual Return
Starting Amount

Pro Tips

  • FD at 7% doubles in 10.3 yrs. Nifty at 14% in 5.1 yrs. RupeeCase at 21% in 3.4 yrs.
  • Over 30 years: that’s 3 doublings vs 6 vs 9, the difference is astronomical.
  • Use it at dinner parties to impress people (or not).
Put what you learn into practice
Every calculator here maps to a concept in the RupeeCase curriculum. Learn the theory, test with these tools, then deploy real strategies on the terminal.
Start free on RupeeCase →
Module Calculators

38 more interactive calculators across the Learn library

Each calculator sits inside the module that teaches the underlying concept. Click any tool below to land directly on it. Free, no sign up.

Tax and compliance | 5 tools
Investing math | 8 tools
Equity analysis | 8 tools
Macro and markets | 4 tools
Trading and execution | 7 tools
Behavioural | 4 tools
Quant methods | 2 tools
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