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Buying a car three years out gives the goal a clear deadline, which makes the savings plan easier to work backwards from. Instead of deciding on an SIP amount first, start with the amount you're likely to need at the time of purchase.
The calculation gets a lot simpler from there.
Read the full article to understand how much you would need to invest every month for different car budgets, what changes if you already have some savings, and how to think about mutual funds when the goal is just three years away.
Key Takeaways
- Start with the amount required for the car, not with an arbitrary SIP amount.
- A three-year goal needs a more careful approach than a long-term wealth-creation goal.
- The higher the expected return assumed, the lower the calculated SIP, but returns are not guaranteed.
- Existing savings can significantly reduce the monthly amount required.
- A car purchase should account for more than the ex-showroom price.
- A SIP is a method of investing, not a guarantee that the target amount will be reached.
Start With the Target, Not the SIP
Most people do this backwards. They pick an SIP amount that feels affordable and hope it adds up. Better to start with the number you actually need at the end of three years, then work out what monthly investment gets you there.
The assumed return matters more than people expect. Say your target is ₹10 lakh in three years with nothing saved yet:
- At 8% annual return: roughly ₹24,800/month
- At 10%: roughly ₹24,000/month
- At 12%: roughly ₹23,200/month
You can see here how little the required SIP actually drops as the assumed return climbs. A higher return assumption makes the calculator output look better without making the outcome any more certain. Mutual fund returns aren't guaranteed, so don't lean too hard on the optimistic end.
SIP by Car Budget (Illustrative, 36 Months)
| Target after 3 years | SIP at 8% | SIP at 10% | SIP at 12% |
| ₹5 lakh | ₹12,400 | ₹12,000 | ₹11,600 |
| ₹7 lakh | ₹17,400 | ₹16,800 | ₹16,200 |
| ₹10 lakh | ₹24,800 | ₹24,000 | ₹23,200 |
| ₹12 lakh | ₹29,800 | ₹28,800 | ₹27,800 |
| ₹15 lakh | ₹37,200 | ₹36,000 | ₹34,800 |
| ₹20 lakh | ₹49,600 | ₹48,000 | ₹46,400 |
Don't Target the Sticker Price
The showroom price today isn't what you will need three years from now. Registration, insurance, accessories, and the fact that car prices themselves tend to rise all eat into a plan built around today's number.
A simple fix: add a buffer.
- Current estimated cost: ₹10 lakh
- Buffer: ₹1 lakh
- Real target: ₹11 lakh
If You Already Have Savings
Say your target is ₹10 lakh and you've already set aside ₹3 lakh. You only need to build ₹7 lakh, not the full amount. At 8%, that is roughly ₹17,300/month over three years.
The real first question isn't "what should my SIP be?" It's "what do I need, and what do I already have?" The SIP just fills the gap.
If You Are Financing Partially
If the plan is a ₹5 lakh down payment on a ₹12 lakh car, your SIP target is ₹5 lakh, not ₹12 lakh. At 8%, that is around ₹12,400/month.
The loan comes with its own costs: EMI and interest. Make sure future EMI, insurance, and running costs fit your budget before locking in the down payment plan. Building the down payment is only half the picture.
Should You Consider Equity Funds?
Three years is short for equity. Equity-oriented funds generally suit longer horizons because returns can swing significantly over shorter periods, while debt funds tend to be a better fit when the timeline is tighter.
That doesn't rule out market-linked investing entirely. It just means you have very little room to absorb a bad month right before you need the money. A market dip in May, with a car purchase locked in for June, isn't something you can wait out the way you could with a 20-year retirement goal.
Is SIP Like Recurring Deposit?
An SIP is simply a way of investing in a mutual fund at regular intervals. It's a method, not a product in its own right. A recurring deposit is a bank product with its own fixed terms. SIP units are bought at the prevailing NAV, so the value moves with the market. Don't treat it like a fixed-return savings account.
What If Required SIP is More Than You Can Afford?
- Give it more time: An extra year adds both compounding time and more contributions.
- Lower the target: A more modest car directly reduces the number.
- Add a lump sum upfront: Any existing savings reduce what the SIP has to do.
- Step up the SIP: Start lower and increase it on a schedule as income rises, for example, ₹20,000 in year one, ₹22,000 in year two, and ₹25,000 in year three. Base the step-up on income you're actually confident about, not every raise you might get.
What If Markets Fall Right Before You Buy A Car?
This is the real difference between a three-year goal and a long-term one. Rupee cost averaging (buying more units when prices fall) is a real effect of regular SIP investing, but it doesn't guarantee a profit or protect against losses in a falling market.
A long-term investor can wait out a downturn. Someone with a fixed purchase date generally can't. That is why the strategy should become more conservative as the deadline nears, shifting from a pure growth mode to one focused on protecting what has already been built.
There is no fixed date for that shift. It depends on your fund choice and how much risk you are comfortable taking near the finish line. It's worth reviewing well before the final month, not after.
A Simple Plan
- Target: ₹10 lakh car fund.
- Set the real target: Not today's price. Say ₹10 lakh including buffer.
- Subtract existing savings: ₹2 lakh already saved brings the gap to ₹8 lakh.
- Check monthly capacity: ₹20,000/month × 36 months = ₹7.2 lakh in contributions alone.
- Stress-test it: If hitting ₹8 lakh only works assuming a strong return, increase the SIP, add a step-up, or trim the target. Don't rely on the market closing the gap.
Mistakes To Avoid
- Picking the SIP amount first and reverse-engineering a target to match it.
- Assuming a fixed return. 10% or 12% is an illustration, not a promise.
- Anchoring to today's car price instead of what it will likely cost at purchase.
- Ignoring the loan side if you are financing part of the purchase.
- Staying fully invested in growth assets right up to the purchase date.
- Treating SIP as a guarantee rather than a disciplined way to invest toward a goal.
Conclusion
The right SIP for a car is not determined by the car's price alone. Start with the amount likely to be needed when the car is purchased. Subtract whatever is already available, decide how much time remains, and then work backwards to the monthly contribution.
For a three-year goal, the return assumption deserves particular attention. A higher assumed return can reduce the SIP shown by a calculator, but it also creates greater dependence on investment performance. Mutual fund returns are not guaranteed.
