What is the ACB Car Loan Calculator?
The ACB Car Loan Calculator estimates the fixed monthly installment (EMI) you would pay on a car loan, along with the total interest and total amount repaid over the full term. It uses the standard amortizing loan formula, so it works for any fixed-rate auto loan regardless of currency.
How to use it
Enter three values: the loan amount (the financed principal), the annual interest rate as a percentage, and the loan term in years. The calculator converts the annual rate to a monthly rate and the term to months, then returns your monthly EMI, the total interest you will pay, and the total of all payments.
The formula explained
The EMI is calculated as $$\text{EMI} = \frac{P \cdot r \cdot (1+r)^n}{(1+r)^n - 1}$$ where \(P\) is the principal, \(r\) is the monthly interest rate (annual rate \(\div 1200\)), and \(n\) is the number of monthly payments (years \(\times 12\)). Each payment covers the interest accrued that month plus a portion of the principal, so the balance steadily falls to zero by the final payment.
Worked example
Suppose you borrow 20,000 at 7% annual interest over 5 years. Then \(r = 7 \div 1200 = 0.0058333\), \(n = 60\). The factor \((1+r)^{60} \approx 1.41763\), giving $$\text{EMI} \approx \frac{20{,}000 \times 0.0058333 \times 1.41763}{0.41763} \approx 396.02$$ per month. Over 60 months you pay about 23,761.44 in total, of which roughly 3,761.44 is interest.
EMI Across Loan Scenarios
The table below shows how the monthly EMI, total interest, and total repayment change when you vary the loan amount, annual interest rate, and term. EMI is calculated with the standard reducing-balance formula \(\text{EMI} = P \cdot \dfrac{r(1+r)^n}{(1+r)^n - 1}\), where \(r\) is the monthly rate and \(n\) the number of months. Total repayment is \(\text{EMI} \times n\), and total interest is total repayment minus the principal.
| Loan Amount | Annual Rate | Term | Monthly EMI | Total Interest | Total Repayment |
|---|---|---|---|---|---|
| 20,000 | 7% | 3 yrs | 617.54 | 2,231.44 | 22,231.44 |
| 20,000 | 7% | 5 yrs | 396.02 | 3,761.44 | 23,761.44 |
| 20,000 | 7% | 7 yrs | 301.77 | 5,348.70 | 25,348.70 |
| 20,000 | 9% | 5 yrs | 415.17 | 4,910.06 | 24,910.06 |
| 30,000 | 8% | 5 yrs | 608.29 | 6,497.51 | 36,497.51 |
| 30,000 | 8% | 7 yrs | 467.49 | 9,269.27 | 39,269.27 |
| 40,000 | 10% | 5 yrs | 849.88 | 10,992.99 | 50,992.99 |
Notice that lengthening the term lowers the monthly EMI but raises the total interest paid, while a higher rate raises both the EMI and total interest.
Key Terms Explained
- EMI (Equated Monthly Installment)
- The fixed amount you pay each month, combining both interest and principal, so the loan is fully repaid by the end of the term.
- Principal (P)
- The original loan amount borrowed before any interest is added.
- Annual interest rate
- The yearly nominal rate quoted on the loan, expressed as a percentage.
- Monthly interest rate (r)
- The annual rate converted to a per-month decimal: \(r = \dfrac{\text{Annual Rate (\%)}}{1200}\). For example, 7% per year becomes \(0.07/12 \approx 0.005833\) per month.
- Term (n)
- The total number of monthly payments, equal to \(12 \times \text{years}\). A 5-year loan has \(n = 60\) payments.
- Amortization
- The process of repaying a loan through scheduled equal payments, where each EMI gradually reduces the outstanding balance.
- Total interest
- The full cost of borrowing over the life of the loan: \(\text{Total Interest} = (\text{EMI} \times n) - P\).
- Total repayment
- The sum of all EMIs paid over the term: \(\text{EMI} \times n\), equal to principal plus total interest.
Understanding Your Result
Your calculated EMI stays the same every month for the entire term of the loan. Although the payment amount is fixed, its internal makeup changes over time. In the early months, a large share of each EMI goes toward interest because the outstanding balance is high. As the balance falls, the interest portion shrinks and a growing share of each payment goes toward repaying the principal.
For example, on a 20,000 loan at 7% over 5 years, the EMI is about 396.02 per month. The first payment includes roughly 116.67 of interest (20,000 \(\times\) 0.07/12) and the rest reduces principal; by the final payment almost the entire amount is principal. To see this month-by-month, view the full breakdown in the ACB Loan Amortization Schedule Calculator.
The total interest figure represents the true cost of borrowing — the extra you pay beyond the original loan amount. A longer term lowers your monthly EMI but increases total interest, while a shorter term does the opposite.
Note: These figures cover only loan principal and interest. They exclude registration fees, insurance, processing charges, sales tax, and any other costs your lender or dealer may add. Always confirm the final terms with ACB before signing. This is general information, not professional financial advice.
FAQ
Does this include taxes or fees? No. It models pure principal and interest. Registration, insurance, and origination fees are not included.
What if my rate is 0%? The calculator divides the principal evenly across all months, so \(\text{EMI} = P \div n\).
Can I use a fractional term? Yes — for example 4.5 years equals 54 months, and the calculator handles non-integer years.
