EMI and Investment Planner: Make Your Loan Interest-Free
Manage your loan with investment — pay your EMI, run a SIP alongside it, and see when your home loan becomes interest-free or fully paid off.
= $5,424/month (EMI $21,696)
Loan EMI
$21,696
Monthly SIP
$5,424
Monthly outflow
$27,120
Loan paid
Principal
$2,500,000
Interest
$2,706,939
Total paid
$5,206,939
SIP
Invested
$1,301,760
Returns
$4,117,618
Total value
$5,419,378
Your SIP's returns ($4,117,618) are more than all the interest you pay on the loan ($2,706,939) — the investment more than pays for the cost of borrowing.
Make this loan interest-free
Invest $3,566/month (16.4% of your EMI) and your SIP's returns will match the full $2,706,939 of interest on this loan — effectively making it interest-free.
Loan + SIP Time Machine
Press play or drag the slider to watch every month's EMI pay down your loan while your SIP grows next to it, year by year.
The day the loan is disbursed
-$2,500,000
SIP value minus loan still owed
Principal repaid
$0
Interest paid
$0
Still owed
$2,500,000
SIP invested
$0
SIP returns
$0
SIP value
$0
You borrow $2,500,000 at 8.5% for 20 years, with an EMI of $21,696/month. Alongside it you start a SIP of $5,424/month, expecting 12% a year, so $27,120/month leaves your wallet every month. Press play to watch both unfold.
Loan vs SIP, Year by Year
Click a point on the chart or a row in the table to jump the Time Machine to that year.
Loan Still Owed vs SIP Value
Yearly Breakdown
| Year | Principal | Interest | Loan Owed | SIP Invested | SIP Value | SIP − Loan |
|---|---|---|---|---|---|---|
| 1 | $49,755 | $210,591 | $2,450,244 | $65,088 | $69,478 | -$2,380,766 |
| 2 | $54,153 | $206,194 | $2,396,091 | $130,176 | $147,767 | -$2,248,324 |
| 3 | $58,942 | $201,407 | $2,337,150 | $195,264 | $235,985 | -$2,101,165 |
| 4 | $64,150 | $196,197 | $2,273,000 | $260,352 | $335,392 | -$1,937,608 |
| 5 | $69,820 | $190,525 | $2,203,180 | $325,440 | $447,406 | -$1,755,774 |
| 6 | $75,990 | $184,353 | $2,127,188 | $390,528 | $573,626 | -$1,553,562 |
| 7 | $82,710 | $177,639 | $2,044,479 | $455,616 | $715,854 | -$1,328,625 |
| 8 | $90,018 | $170,328 | $1,954,459 | $520,704 | $876,120 | -$1,078,339 |
| 9 | $97,976 | $162,368 | $1,856,482 | $585,792 | $1,056,712 | -$799,770 |
| 10 | $106,634 | $153,710 | $1,749,846 | $650,880 | $1,260,207 | -$489,639 |
| 11 | $116,063 | $144,286 | $1,633,783 | $715,968 | $1,489,511 | -$144,272 |
| 12 | $126,323 | $134,027 | $1,507,462 | $781,056 | $1,747,896 | $240,434 |
| 13 | $137,488 | $122,859 | $1,369,974 | $846,144 | $2,039,051 | $669,077 |
| 14 | $149,640 | $110,708 | $1,220,335 | $911,232 | $2,367,131 | $1,146,796 |
| 15 | $162,867 | $97,480 | $1,057,468 | $976,320 | $2,736,820 | $1,679,352 |
| 16 | $177,262 | $83,085 | $880,206 | $1,041,408 | $3,153,395 | $2,273,189 |
| 17 | $192,933 | $67,417 | $687,275 | $1,106,496 | $3,622,803 | $2,935,528 |
| 18 | $209,985 | $50,364 | $477,291 | $1,171,584 | $4,151,742 | $3,674,451 |
| 19 | $228,544 | $31,802 | $248,746 | $1,236,672 | $4,747,765 | $4,499,019 |
| 20 | $248,746 | $11,602 | $0 | $1,301,760 | $5,419,378 | $5,419,378 |
Frequently Asked Questions
1How can I make my home loan interest-free?
Run a SIP alongside your home loan EMI. If the SIP's returns over the loan tenure equal the total interest you pay, you have effectively earned the interest back, so the loan is interest-free in net terms. For a 20-year home loan at 8.5% with a 12% expected SIP return, investing roughly 16% of your EMI every month is enough. The calculator above works out the exact monthly amount for your own loan under "Make this loan interest-free".
2How do I manage a loan with investment, using EMI and SIP together?
Pay your EMI as usual and put a share of it (or a fixed amount) into a monthly SIP for the same tenure. The loan is repaid on schedule while the SIP compounds. This calculator shows both side by side — loan principal, interest and total paid next to SIP invested, returns and value — so you can see how your loan and investment balance out year by year.
3Can a SIP make my loan free by paying it off early?
Potentially, yes. Once your SIP's value grows beyond the loan balance you still owe, you could redeem it and close the loan early, becoming loan-free years ahead of schedule. The Time Machine marks that year as "SIP could clear the loan"; with the default inputs it arrives around year 12 of a 20-year loan.
4Should I invest in a SIP while repaying a loan?
It depends on the loan's interest rate versus the return you expect from investing. If your SIP is expected to earn more than your loan costs (after tax), investing alongside the EMI can leave you better off than putting every spare rupee into prepayments. For expensive debt like credit cards or personal loans, paying the loan down first is usually the better choice.
5Why does the calculator suggest the SIP as a percentage of the EMI?
It's a simple rule of thumb: invest a slice of your EMI every month so that, by the time the loan is closed, you've built up a fund that makes up for some or all of the interest you paid. Linking the SIP to the EMI keeps the plan proportional to the size of the loan. You can switch to a custom amount any time.
6What does "SIP could clear the loan" mean?
It is the first year in which your SIP's value is higher than the loan balance you still owe. From that point you could, in theory, redeem the SIP and close the loan early. Whether you should depends on taxes, exit loads, and whether you'd rather keep the investment growing.
7Is the SIP return guaranteed?
No. The loan interest is a contractual cost, but market-linked SIP returns are not guaranteed and will vary year to year. The calculator assumes a steady expected return to keep the comparison simple — real results may be higher or lower.
8Does this include taxes, fees or loan tax benefits?
No. It compares the loan's interest cost with the SIP's pre-tax returns only. Processing fees, prepayment charges, capital-gains tax on the SIP and any tax deductions on loan interest or principal are not included.
How the Numbers Are Calculated
The loan is a standard reducing-balance loan: the EMI is fixed, interest each month is charged on the balance still outstanding, and the rest of the EMI pays down the principal.
The SIP runs for exactly the same tenure. Each month's installment is invested at the start of the month and compounds monthly at the expected return rate. When the SIP is set as a percentage of the EMI, the monthly SIP is that share of the EMI.
Loan EMI
EMI = P × i × (1 + i)^n / ((1 + i)^n − 1)
SIP amount (% of EMI)
SIP = EMI × p / 100
SIP future value
FV = SIP × [((1 + r)^n − 1) / r] × (1 + r)
- P = loan amount, i = loan interest rate ÷ 12, r = expected SIP return ÷ 12, n = tenure in months, p = SIP as a percentage of the EMI.
- Monthly outflow = EMI + SIP — the total that leaves your wallet every month.
- SIP − Loan (net position) = SIP value minus the loan balance still owed at the end of each year. Once it turns positive, the SIP could pay off the loan.
- Interest-free SIP = the monthly SIP whose total returns over the tenure equal the loan's total interest, i.e. total interest ÷ the returns earned by a SIP of 1 per month.
- All figures are rounded only at the point they are displayed, never mid-calculation.