Overview & Core Concept
Prepaying a loan provides a guaranteed, risk-free return equal to your effective interest rate (e.g. 8.5% post-tax). Investing in equities historically yields 12%–14% CAGR, but with market volatility and capital gains taxation.
Many borrowers make an all-or-nothing choice, whereas a balanced hybrid approach yields the highest net worth and preserves liquidity.
Step-by-Step: How to Use the Calculator
Model Your Current Loan Baseline
Input your principal, interest rate, and remaining tenure into the EMI calculator.
Simulate Tenure Reduction
Increase monthly payment by your surplus cash to see how many years are eliminated.
Cross-Check Opportunity Cost in the SIP Calculator
Input that exact monthly surplus into our SIP Calculator at a 12% CAGR over the same time horizon.
Mathematical Formula & Derivation
Variables & Parameters:
| Symbol | Variable Name | Description & Role in Calculation |
|---|---|---|
| R_loan | Loan Interest Rate | Guaranteed risk-free savings rate. |
| R_equity | Equity Mutual Fund CAGR | Expected long-term market appreciation (~12-13%). |
| T_LTCG | Long Term Capital Gains Tax | 12.5% on equity gains above ₹1.25 Lakhs. |
Why Our Visual Calculator Outperforms Generic Tools
Make objective decisions using math and personal risk tolerance, not sales pitches.
| Evaluation Metric | Generic Market Calculators | RV Anveshana Visual Suite |
|---|---|---|
| Unbiased Opportunity Cost | ❌ Biased towards their product | ✅ Objective math across both debt & equity |
| Cross-Tool Integration | ❌ Disconnected calculators | ✅ Seamless linking between EMI & SIP engines |
- Most loan calculators only tell you what your EMI is, with no way to compare the opportunity cost of investing.
- Investment portals discourage loan prepayments to collect investment commissions.
- Unbiased, objective analytical toolkits across both loan payoff and wealth generation.
- Side-by-side scenario comparison table.
- Direct navigation between our EMI Amortization Suite and SIP Compounding Suite.
Practical Case Study & Real Numbers
Case Study: The ₹20,000 Monthly Surplus Decision
Pro Tips & Critical Pitfalls
- Never prepay your loan with your emergency cash fund; money locked in real estate cannot be accessed during sudden medical or job crises.
- Prepay aggressively in Years 1–5 when the interest portion of your EMI is at its highest.
- Liquidating high-return equity investments to pay off a low-interest tax-deductible home loan.
Frequently Asked Questions
Sources & Methodology
We use calculator formulas together with guidance from primary public authorities. Review the linked source for current rules, rates, and eligibility details.
- Financial education and consumer information Reserve Bank of India
- Investor education and mutual fund guidance SEBI Investor
- Income tax rules, filing, and taxpayer services Income Tax Department, Government of India
Published March 3, 2026 · Last reviewed September 13, 2026
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