Pay Off Debt vs Invest Calculator
Compare whether using your extra money to prepay debt or invest it instead gives you better financial outcomes and a clearer path to long-term wealth.
Input Details
Min: ₹0•Max: ₹10,00,000
Loan Details
Min: ₹10,000•Max: ₹10,00,00,000
Min: ₹1,000•Max: ₹10,00,000
Investment Assumption
Min: 1%, Max: 30%
Scenario 1: Prepay Loan
Scenario 2: Invest Instead
Recommendation: Invest the Extra Money
Even after adjusting for risk, investing is expected to generate approximately ₹6,357 more than the guaranteed interest saved by prepaying the loan.
This recommendation is based on the inputs provided and general assumptions. It may not suit every individual’s financial situation. For personalized advice, consider consulting a registered financial advisor.
Why Prepay Loan?
- Peace of mind and reduced stress
- Guaranteed “return” equal to your loan interest rate
- Approaching retirement or low risk tolerance
- Short remaining tenure (3-5 years)
- Unstable job or industry
Why Invest Instead?
- Potential for higher long-term wealth creation
- Better liquidity and flexibility
- Long investment horizon (5+ years)
- Low interest rate loan
- Tax benefits on home loan (if applicable)
About Pay Off Loan vs Invest Calculator & Frequently Asked Questions
Should I Pay Off My Loan or Invest?
This calculator settles one of the most critical debates in personal finance about whether to allocate surplus cash (from annual bonuses or monthly savings) toward prepaying low-interest debt or investing it in wealth-building assets. It weighs the guaranteed, risk-free interest savings of prepayment against the expected compounded growth of equity markets. To see pure debt reduction mechanics without an investment comparison, visit our Loan Prepayment Calculator.
Where and Why is it Helping?
- Quantifies Opportunity Cost: Prepaying an 8.5% mortgage delivers peace of mind, but diverting that capital into an equity fund generating 12% to 14% can yield substantially higher net terminal wealth.
- Conservative Risk-Buffer: Incorporates a 4% equity volatility buffer so decisions are not made on overly optimistic market returns.
- Flexible Allocation Scenarios: Evaluate either deploying a one-time windfall or starting a systematic installment in our SIP Calculator versus paying higher monthly EMIs in our EMI Calculator.
How to Use the Calculator
- Select Surplus Type: Choose whether you have a one-time lump sum or an extra monthly cash flow.
- Enter Surplus Amount: Input the cash amount you want to allocate.
- Provide Loan Details: Input your current loan balance, annual interest rate, and remaining tenure.
- Set Expected Returns: Enter what you expect your investments to yield annually.
- Compare the Outputs: The calculator shows the interest saved if you prepay vs. the future value if you invest, followed by a direct financial recommendation.
The Formula & Example
- Interest Saved (Prepayment): Total Interest (without prepayment) - Total Interest (after applying prepayment to principal).
- Future Value of Investment: Lumpsum FV = Surplus * (1 + r)^t; Monthly SIP FV = Surplus * [((1 + i)^n - 1) / i] * (1 + i), where r is expected annual rate and t is the remaining loan tenure in years.
- Recommendation Rule: If (Expected Return - 4% Risk Buffer) is greater than the Loan Interest Rate, the calculator recommends investing the surplus; otherwise, it advises prepaying the loan.
- For example, if you have ₹5,00,000 extra cash and an outstanding home loan at 8.5% with 10 years remaining, prepaying the loan saves you ₹3,40,000 in interest. If you invest the ₹5,00,000 at an expected annual return of 12%, it grows to ₹15,53,000 in 10 years (a net wealth gain of ₹10,53,000). Since the risk-adjusted investment return (12% - 4% = 8%) is higher than the 8.5% loan rate, the calculator recommends investing the surplus.
About Pay Off Loan vs Invest Calculator & Frequently Asked Questions
Should I Pay Off My Loan or Invest?
This calculator settles one of the most critical debates in personal finance about whether to allocate surplus cash (from annual bonuses or monthly savings) toward prepaying low-interest debt or investing it in wealth-building assets. It weighs the guaranteed, risk-free interest savings of prepayment against the expected compounded growth of equity markets. To see pure debt reduction mechanics without an investment comparison, visit our Loan Prepayment Calculator.
Where and Why is it Helping?
- Quantifies Opportunity Cost: Prepaying an 8.5% mortgage delivers peace of mind, but diverting that capital into an equity fund generating 12% to 14% can yield substantially higher net terminal wealth.
- Conservative Risk-Buffer: Incorporates a 4% equity volatility buffer so decisions are not made on overly optimistic market returns.
- Flexible Allocation Scenarios: Evaluate either deploying a one-time windfall or starting a systematic installment in our SIP Calculator versus paying higher monthly EMIs in our EMI Calculator.
How to Use the Calculator
- Select Surplus Type: Choose whether you have a one-time lump sum or an extra monthly cash flow.
- Enter Surplus Amount: Input the cash amount you want to allocate.
- Provide Loan Details: Input your current loan balance, annual interest rate, and remaining tenure.
- Set Expected Returns: Enter what you expect your investments to yield annually.
- Compare the Outputs: The calculator shows the interest saved if you prepay vs. the future value if you invest, followed by a direct financial recommendation.
The Formula & Example
- Interest Saved (Prepayment): Total Interest (without prepayment) - Total Interest (after applying prepayment to principal).
- Future Value of Investment: Lumpsum FV = Surplus * (1 + r)^t; Monthly SIP FV = Surplus * [((1 + i)^n - 1) / i] * (1 + i), where r is expected annual rate and t is the remaining loan tenure in years.
- Recommendation Rule: If (Expected Return - 4% Risk Buffer) is greater than the Loan Interest Rate, the calculator recommends investing the surplus; otherwise, it advises prepaying the loan.
- For example, if you have ₹5,00,000 extra cash and an outstanding home loan at 8.5% with 10 years remaining, prepaying the loan saves you ₹3,40,000 in interest. If you invest the ₹5,00,000 at an expected annual return of 12%, it grows to ₹15,53,000 in 10 years (a net wealth gain of ₹10,53,000). Since the risk-adjusted investment return (12% - 4% = 8%) is higher than the 8.5% loan rate, the calculator recommends investing the surplus.