About this tool
Plan the down payment, test the EMI against the 20/4/10 rule and see the full cost of owning the car after resale.
This planner answers the three questions a car purchase actually turns on: what to save each month for the down payment, whether the EMI is affordable, and what the car costs across the years you keep it. Affordability is tested against the 20/4/10 rule — at least 20% down, a loan of no more than four years, and total car costs including fuel, insurance and servicing under 10% of gross monthly income. Ownership cost is down payment plus EMIs plus running costs, less a resale value estimated from the India Motor Tariff depreciation schedule used to fix Insured Declared Value.
Open Car Purchase Savings Planner on AltFTool — it loads instantly in your browser.
Enter the values you already know.
Fine-tune the options to match your scenario.
Read the result and use it in your planning or reporting.
Each leg of the 20/4/10 rule is checked separately, so you can see exactly which one the purchase fails.
Depreciation follows the motor-tariff IDV table rather than a made-up percentage.
Fuel derived from your annual kilometres and mileage, plus insurance and servicing, is where most of the surprise lives.
Put down at least 20% of the price, keep the loan to four years or less, and keep all car costs — EMI plus fuel, insurance and maintenance — under 10% of your gross monthly income. It is a budgeting guideline rather than a lending rule, and a longer loan usually means the car is more expensive than the budget supports.
The India Motor Tariff depreciation schedule used to fix Insured Declared Value writes down the ex-showroom price by 5% under six months, 15% at six months to a year, 20% in years one to two, 30% in years two to three, 40% in years three to four and 50% at four to five years. Past five years there is no tariff figure and the value is agreed between insurer and owner.
It lowers the monthly payment but raises total interest and keeps you in negative equity for longer, because a car depreciates faster than the loan amortises. On a ₹10 lakh loan at 9.5%, stretching from four to five years cuts the EMI by roughly ₹4,000 but adds well over ₹50,000 of interest.
No. On-road price is ex-showroom plus road tax, registration, insurance and handling, typically adding 10–20% depending on the state and the vehicle. Road tax and registration have no resale value, which is why the depreciation schedule is applied to the ex-showroom share rather than the full on-road figure.
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