Quick examples
Interest Saved (Prepay)
$386,266
Investment Gain
$2.24M
EMI Before
$24,618
EMI After Prepay
$19,695
EMI Reduction
$4,924
Investment Future Value
$2.74M
Current loan payment schedule
Full amortization on your outstanding balance today
Total EMI
$4.43M
Principal
$2.50M
Interest
$1.93M
Closing balance
$0
| Period | Span | Total EMI | Principal | Interest | Balance |
|---|---|---|---|---|---|
| 2026 | 5 payments | $123,092 | $35,044 | $88,049 | $2.46M |
| 2027 | 12 payments | $295,422 | $89,327 | $206,094 | $2.38M |
| 2028 | 12 payments | $295,422 | $97,223 | $198,199 | $2.28M |
| 2029 | 12 payments | $295,422 | $105,817 | $189,605 | $2.17M |
| 2030 | 12 payments | $295,422 | $115,170 | $180,252 | $2.06M |
| 2031 | 12 payments | $295,422 | $125,350 | $170,072 | $1.93M |
| 2032 | 12 payments | $295,422 | $136,430 | $158,992 | $1.80M |
| 2033 | 12 payments | $295,422 | $148,489 | $146,933 | $1.65M |
| 2034 | 12 payments | $295,422 | $161,614 | $133,808 | $1.49M |
| 2035 | 12 payments | $295,422 | $175,899 | $119,523 | $1.31M |
| 2036 | 12 payments | $295,422 | $191,447 | $103,975 | $1.12M |
| 2037 | 12 payments | $295,422 | $208,369 | $87,053 | $909,820 |
| 2038 | 12 payments | $295,422 | $226,787 | $68,635 | $683,033 |
| 2039 | 12 payments | $295,422 | $246,833 | $48,589 | $436,200 |
| 2040 | 12 payments | $295,422 | $268,651 | $26,771 | $167,549 |
| 2041 | 7 payments | $172,329 | $167,549 | $4,781 | $0 |
| Total | $4.43M | $2.50M | $1.93M | $0 | |
Prepay Loan vs Invest (SIP) Calculator — Quick Reference
The Prepay Loan vs Invest (SIP) Calculator is an online tool that should you prepay your home loan or invest the lump sum in mutual funds? Compare interest saved vs investment returns. Everything for the Prepay Loan vs Invest (SIP) Calculator is on this page: the interactive calculator, the formula, a worked example, step-by-step guidance, and frequently asked questions — no other pages required.
At a glance
- Main inputs
- Loan principal
- Annual interest rate
- Tenure (years or months)
- Main outputs
- Monthly EMI or payment
- Total interest
- Total amount repaid
Direct answers
What is the Prepay Loan vs Invest (SIP) Calculator?
The Prepay Loan vs Invest (SIP) Calculator is an online tool that should you prepay your home loan or invest the lump sum in mutual funds? Compare interest saved vs investment returns.
What formula does the Prepay Loan vs Invest (SIP) Calculator use?
Interest saved = reduced EMI schedule vs original
How does the Prepay Loan vs Invest (SIP) Calculator work?
Enter outstanding loan balance, rate, remaining tenure, prepayment amount, and expected investment return. We compare total interest saved from prepayment against lump-sum investment gains over the same period.
Formula Used
The equation below is what this calculator applies. Variable definitions follow when symbols are used.
Equation
Interest saved = reduced EMI schedule vs original
Additional rules
- investment gain = FV of prepay amount at assumed return
Worked Example: $500,000 prepayment on $2,500,000 loan @ 8.5%, 15 years left, 12% investment return
Sample inputs and the results this calculator produces for the scenario below.
Inputs
- Outstanding Loan
- $2,500,000
- Prepay Amount
- $500,000
- Investment Return
- 12% p.a.
Results
- Interest Saved
- ~$680,000
- Investment Gain
- ~$820,000
- Recommendation
- Invest (pre-tax)
When expected investment return exceeds loan rate, investing may beat prepayment — but consider risk, tax on gains, and peace of mind from being debt-free.
How Prepay Loan vs Invest (SIP) Calculator Works
Enter outstanding loan balance, rate, remaining tenure, prepayment amount, and expected investment return. We compare total interest saved from prepayment against lump-sum investment gains over the same period.
What to enter
Use the calculator above to set your amounts, rates, and tenure. Results update as you move sliders or type values — switch currency if you are planning in USD, INR, or another supported unit.
Step-by-step
- Open the Prepay Loan vs Invest (SIP) Calculator and enter your amounts, rates, and time period in the input fields.
- Review the results panel — totals update instantly when you change any value.
- Compare the worked example and formula below to verify the math matches your scenario.
- Read the FAQs for common edge cases, tax notes, and planning tips specific to this calculator.
Prepay vs Invest — Frequently Asked Questions
Each question is answered directly below. Expand any item for the full response.
What is this calculator comparing?
It compares the guaranteed interest saved by prepaying a loan against the market-linked growth you might earn by investing the same extra money through SIP. The better option depends on loan rate, tax position, risk tolerance, and investing discipline.
Why is loan prepayment often attractive even if expected SIP returns look higher?
Prepayment gives a known reduction in future interest, while SIP returns are uncertain and can arrive unevenly. For people who value certainty or carry a high-rate loan, that guaranteed saving can be very compelling.
When can SIP investing beat prepayment?
It can beat prepayment when the loan rate is moderate, the investment horizon is long, and you can tolerate market volatility without stopping the plan midway. Tax on investment gains and the loss of loan-related deductions can change the comparison.
What is a sensible real-world approach?
Keep an emergency fund first, then consider a split strategy where part of the surplus goes to prepayment and part to long-term investing. That avoids overcommitting to one path before your cash flow is stable.
Disclaimer
- This calculator gives you an estimate only. It is not a promise of exact results.
- This is general information, not personal financial, tax, or legal advice.
- You are responsible for your own decisions. Talk to a qualified professional when it matters.
- Banks and lenders may add fees, insurance, or a different interest method. Your real EMI can differ.
Related Calculators
EMI Calculator
Calculate your Equated Monthly Installment for any loan amount, interest rate, and tenure.
Home Loan Calculator
Plan your home purchase with accurate EMI, interest, and amortization breakdown.
Personal Loan Calculator
Estimate EMI and total cost for unsecured personal loans.
Car Loan Calculator
Calculate car loan EMI and total financing cost for your new or used vehicle.
Bike Loan Calculator
Calculate two-wheeler loan EMI and total financing cost for your new or used bike or scooter.
Mortgage Calculator
Comprehensive mortgage calculator with property tax and insurance estimates.