🚗 Car Affordability
Find out exactly how much car you can afford without straining your monthly budget using the golden 20/4/10 financial rule.
Your average monthly income after taxes and deductions.
Loan Amount
₹0
Monthly EMI
₹0
Total Interest
₹0
How this calculation works
• The 20% Down Payment: Putting down at least 20% prevents you from being "underwater" (owing more on the loan than the car is worth) as the car depreciates sharply in its first year.
• The 4-Year Cap (Tenure): Keeping the loan to 48 months or less minimizes the total interest you pay and ensures you aren't paying for a car long after its prime.
• The 10% EMI Limit: Your monthly EMI should not exceed 10% of your monthly take-home income. This leaves enough room in your budget for living expenses, investing, and car running costs (fuel, insurance, maintenance).
• The Target Budget: The calculator reverses the 10% EMI rule over 4 years to find your maximum safe loan, then assumes that loan is 80% of the car price so the remaining 20% can be paid upfront.
Worked example
Setup: You want a ₹12 L car and have ₹2 L for a down payment. You take a 9% loan for 5 years. Your take-home income is ₹80,000/mo.
The Reality Check: The calculator shows you fail all three rules.
- Your ₹2 L down payment is only ~16.7% (target is 20% or ₹2.4 L).
- Your 5-year tenure exceeds the 4-year limit.
- Your EMI is ~₹20,758, which is ~26% of your ₹80,000 income (target is ≤10% or ₹8,000).
The Solution: The calculator suggests a safe Target Budget of ~₹4.01 L based on a 4-year loan and a ₹8,000 max EMI.
When is this tool useful?
• You are planning to buy a new or used car and want an objective financial reality check.
• You want to know exactly how much car you can afford without sacrificing your long-term investing goals.
• You want to understand the interest impact of stretching your loan tenure to 7 years just to lower the EMI.
Assumptions & exclusions
• The 10% limit in this calculator applies strictly to the EMI. Some stricter definitions of the rule include running costs (fuel, maintenance, insurance) within the 10%. We use the EMI-only approach as it is more practical for the Indian market, but you must still budget separately for running costs.
• The calculator assumes the down payment is cash you already have saved, not borrowed from another source (like a personal loan), which would defeat the purpose of the rule.
• It models a standard reducing-balance loan, which is standard for car loans in India.
Frequently asked questions
Is the 20/4/10 rule too strict for India?
It is extremely conservative. Because car prices are high relative to average incomes in India, many buyers stretch to a 20% EMI limit or 7-year loans. The rule represents an ideal financial state that protects your wealth building. If you stretch the rule, do it consciously, knowing it will reduce your monthly investing capacity.
Why a 4-year limit when banks offer 7-year loans?
Cars are depreciating assets. A 7-year loan significantly increases the total interest you pay and keeps you in debt while the car rapidly loses value. If you need 7 years to afford the monthly payment, the math suggests the car is too expensive for your current income.
How should I interpret the result?
Use the "Target Budget" as your anchor. If the car you want is much more expensive than the target budget, consider delaying the purchase to save a larger down payment (which reduces the loan amount and EMI), increasing your income, or choosing a reliable used car instead.
Compare another money decision
Check a standard EMI, compare prepayment with investing, or test the SIP tradeoff.