Financing a two-wheeler
Two-wheeler loans are small and short, which changes the shape of the deal. The rate is higher than on a home loan, but the tenure is brief enough that the total interest stays modest.
Dealers often present the EMI without the tenure attached. Two offers with the same monthly figure can differ by a year, and that year is the whole cost difference.
The formula behind the number
An amortising loan is repaid in equal instalments. Each one covers the interest that accrued since the last payment, and whatever is left reduces the balance. The instalment that brings the balance to exactly zero on the final payment is:
Here P is the amount borrowed, i is the monthly rate (the annual rate divided by 12) and n is the number of payments. Nothing else enters the calculation, which is why two lenders quoting the same three inputs must arrive at the same instalment.
Worked example: ₹80,000 at 10% over 3 years
The calculator opens on this scenario, so you can follow every step:
- Amount borrowed: ₹80,000
- Annual rate: 10%, so the monthly rate is 10 ÷ 12 = 0.8333%
- Term: 3 years, so n = 3 × 12 = 36 payments
Paying ₹2,581.37 every month for 36 months comes to ₹92,929. Subtract the ₹80,000 you actually borrowed and the cost of the credit is ₹12,929, or 16% of the sum borrowed.
Where each payment goes
The instalment never changes, but its composition does. The first payment carries ₹666.67 of interest and only ₹1,914.71 of principal. By payment 18 the split has moved to ₹376.56 interest against ₹2,204.82 principal.
| Payment | Instalment | Interest | Principal | Balance |
|---|---|---|---|---|
| 1 | ₹2,581.37 | ₹666.67 | ₹1,914.71 | ₹78,085 |
| 2 | ₹2,581.37 | ₹650.71 | ₹1,930.66 | ₹76,155 |
| 3 | ₹2,581.37 | ₹634.62 | ₹1,946.75 | ₹74,208 |
| 18 | ₹2,581.37 | ₹376.56 | ₹2,204.82 | ₹42,982 |
| 36 | ₹2,581.37 | ₹21.33 | ₹2,560.04 | ₹0.00 |
Over three years the interest share falls quickly. By the final year almost the entire instalment is repaying principal.
What moves the answer most
Two levers change the total, and they do not pull with equal force.
Add one percentage point to the rate and the instalment goes from ₹2,581.37 to ₹2,619.10, which is ₹1,358.01 more over the full term. Cut 1 year off the term instead and the instalment rises to ₹3,691.59, but total interest falls from ₹12,929 to ₹8,598.26. Shortening the tenure on a small loan barely changes the monthly figure but removes a visible share of the interest.
What this calculator leaves out
Insurance, registration, road tax and the dealer handling charge are excluded, and together they are a significant fraction of the on-road price.
On-road price against ex-showroom price
Dealers quote the ex-showroom figure, but the loan is written against the on-road price. Insurance, registration, road tax and handling typically add 10 to 15 percent, so an ₹80,000 machine often needs closer to ₹90,000 of finance unless you pay those costs separately.
Check which figure the quoted EMI is based on before comparing offers. Two dealers quoting the same monthly amount can be financing different totals, and the cheaper-looking EMI may simply exclude costs the other has bundled in.
Related calculators
- EMI calculator — for larger loans and longer tenures
- Auto loan calculator — the four-wheeler equivalent
- Down payment calculator — how the deposit changes the EMI