How much of a down payment for a car should I save before purchasing it?
If and only if by coincidence the car you were already considering from your research includes a 0% finance offer, go ahead a take the financing and save your cash. If however you are being tempted to a different car, or would spend more than you initially thought were wanted to, 0% financing is just another trick to get more of you money. Just be honest why you want the car: is it a good price, or does the financing seem like a good deal?  Even if you are not paying interest, you are paying principal. If you're getting 0% on the financing, it's not costing you anything to borrow that money. So its basically free money. If you are comfortable with the monthly payments, consider going with no downpayment at all. Keep that money aside for a rainy day, or invest it somewhere so that you get some return on it. If you need to lower the payments later you can always use that money to pay down part of the loan later (check with the dealer that it is an open loan). If you're not comfortable with the payments at 0 down, put enough down to bring the monthly payment to a level where you are comfortable. "I've run into two lines of thinking on cars when the 0% option is offered.  One is that you should buy the car with cash - always.  Car debt is not usually considered ""good debt,"" as there is no doubt but that your car will depreciate.  Unless something very odd happens or you keep the car to antique status (and it's a good one), you won't make money off of it. On the other hand, with 0% interest - if you qualify, and remember that dealer promotions aren't for everyone, just those who qualify - you can invest that money in a savings account, bonds, a mutual fund, or the stock market and theoretically make a lot more over the 5 years while paying down the car.  In that case, you really only need to make sure you save enough to make the payment low enough for your comfort zone. Personally I prefer to not be making a car payment.  Your personal comfort level may vary. Also, in terms of getting your money's worth a gently used car in good condition is miles better than a new car.  Someone else took the hit on the ""drive it off the lot"" decline in price for you." Do you need the car, or is this an optional purchase for you?  Do you currently have a car that is in good working order? If you can continue to save for the car instead of buying now, you'll be getting interest on what you've saved -- and that's a lot better than 0% financing. "I'd put more money down and avoid financing. I personally don't think car debt is good debt and if you can't afford the car, you are better off with a cheaper car. Also, you should read up on the 0% offer before deciding to commit.   Here's one article that is slightly dated, but discusses some pros and cons of 0% financing. My main point though is that 0% financing is not ""free"" and you need to consider the cost of that financing before making the purchase.  Aside from the normal loan costs of having a monthly payment, possibly buying too much car by looking at monthly cost, etc., a 0% financing offer usually forces you to give the dealer/financing company any rebates that are due to you, in essence making the car cost more." At minimum, put down the sale price less what insurance would pay if you got in an accident when driving home, OR purchase gap insurance. This auto loan calculator is fun to play around with.  The larger the down payment, the smaller your monthly payments will be.  Don't forget to budget insurance and gas!  Insurance on a car you make payments on is more expensive. http://www.bankrate.com/calculators/auto/auto-loan-calculator.aspx A buddy of mine had a string of bad luck and totaled his car a few months after the date of purchase.  He learned what it meant to be 'underwater', insurance paid him a few thousand less than the value of his loan.  What's worse than having no car, having no car and a loan!
Without knowing the terms of the company leased car, it's hard to know if that would be preferable to purchasing a car yourself. So I'll concentrate on the two purchase options - getting a loan or paying in full from savings. If the goal is simply to minimize the amount paid for this car, then paying the full cost up-front is best, because it avoids the financing and interest charges associated with a loan. However, the money you would pay for this car would come out of somewhere (your savings). If your savings were in an investment earning a risk-adjusted return rate of, say, 5% APY and the loan cost 1% APY, you'd have more money in the long run by keeping as much money in your savings as possible, and paying the loan as slowly as possible, because the return rate on your savings is higher. Those numbers are theoretical, of course. You have to make a decision based on your expectation of the performance of your investments, and on the cost of the loan. But depending on your risk tolerance and the loan terms available to you, a loan may well make sense. This is especially true when loans costs are subsidized by manufacturers, who often offer favorable financing on new cars to drive demand. But even bank loans on cars can be pretty inexpensive because the car is a form of collateral with predictable future value. And finally, you should consider tax treatment -- not usually a consideration in purchases of cars by consumers in the US, but can vary due to business use and certainly may be different in India. See also: How smart is it to really be 100% debt free? I'd put the 20% down, close on the house, live in it for a year, and save the difference.  If you find your cash flow is fine, run a calculation and start on a program of prepaying a bit of principal each month as an extra payment. If you study how amortization works, you'll understand that an extra payment of about 1/6 the amount due will knock off a full payment at the end. This is how a 30 year mortgage starts out. Meanwhile, you should keep in mind, it's easy to prepay the mortgage, but there's really no getting it back. So, before letting go of your money, I'd do a few things; I may be stating the obvious, but consider - No matter how low the payment on your mortgage, a payment is due each and every month until it's paid off. You put 80% down, take a 10 year mortgage, you still have payments for 10 years. You want to insure yourself against needing to sell in a hurry if you both lose your jobs, so whatever you put down, I'd recommend a healthy emergency account, 9-12 months worth of expenses. "a link to this article grabbed my Interest as I was browsing the site for something totally unrelated to finance.  Your question is not silly - I'm not a financial expert, but I've been in your situation several times with Carmax Auto Finance (CAF) in particular. A lot of people probably thought you don't understand how financing works - but your Car Loan set up is EXACTLY how CAF Financing works, which I've used several times. Just some background info to anyone else reading this - unlike most other Simple Interest Car Financing, with CAF, they calculate per-diem based on your principal balance, and recalculate it every time you make a payment, regardless of when your actual due date was.  But here's what makes CAF financing particularly fair - when you do make a payment, your per-diem since your last payment accrued X dollars, and that's your interest portion that is subtracted first from your payment (and obviously per-diem goes down faster the more you pay in a payment), and then EVerything else, including Any extra payments you make - goes to Principal. You do not have to specify that the extra payment(S) are principal only. If your payment amount per month is $500 and you give them 11 payments of $500 - the first $500 will have a small portion go to interest accrued since the last payment - depending on the per-diem that was recalculated, and then EVERYTHING ELSE goes to principal and STILL PUSHES YOUR NEXT DUE DATE (I prefer to break up extra payments as precisely the amount due per month, so that my intention is clear - pay the extra as a payment for the next month, and the one after that, etc, and keep pushing my next due date). That last point of pushing your next due date is the key  - not all car financing companies do that. A lot of them will let you pay to principal yes, but you're still due next month. With CAF, you can have your cake, and eat it too. I worked for them in College - I know their financing system in and out, and I've always financed with them for that very reason.  So, back to the question - should you keep the loan alive, albeit for a small amount. My unprofessional answer is yes! Car loans are very powerful in your credit report because they are installment accounts (same as Mortgages, and other accounts that you pay down to 0 and the loan is closed). Credit cards, are revolving accounts, and don't offer as much bang for your money - unless you are savvy in manipulating your card balances - take it up one month, take it down to 0 the next month, etc. I play those games a lot - but I always find mortgage and auto loans make the best impact.  I do exactly what you do myself - I pay off the car down to about $500 (I actually make several small payments each equal to the agreed upon Monthly payment because their system automatically treats that as a payment for the next month due, and the one after that, etc - on top of paying it all to principal as I mentioned).  DO NOT leave a dollar, as another reader mentioned - they have a ""good will"" threshold, I can't remember how much - probably $50, for which they will consider the account paid off, and close it out. So, if your concern is throwing away free money but you still want the account alive, your ""sweet spot"" where you can be sure the loan is not closed, is probably around $100.  BUT....something else important to consider if you decide to go with that strategy of keeping the account alive (which I recommend). In my case, CAF will adjust down your next payment due, if it's less than the principal left. SO, let's say your regular payment is $400 and you only leave a $100, your next payment due is $100 (and it will go up a few cents each month because of the small per-diem), and that is exactly what CAF will report to the credit bureaus as your monthly obligation - which sucks because now your awesome car payment history looks like you've only been paying $100 every month - so, leave something close to one month's payment (yes, the interest accrued will be higher - but I'm not a penny-pincher when the reward is worth it - if you left $400 for 1.5 years at 10% APR - that equates to about $50 interest for that entire time - well worth it in my books. Sorry for rambling a lot, I suck myself into these debates all the time :)" Any way you look at it, this is a terrible idea. Cars lose value.  They are a disposable item that gets used up.  The more expensive the car, the more value they lose. If you spend $100,000 on a new car, in four years it will be worth less than $50,000.*  That is a lot of money to lose in four years. In addition to the loss of value, you will need to buy insurance, which, for a $100,000 car, is incredible. If your heart is set on this kind of car, you should definitely save up the cash and wait to buy the car.  Do not get a loan.  Here is why: Your plan has you saving $1,300 a month ($16,000 a year) for 6.5 years before you will be able to buy this car.  That is a lot of money for a long range goal.  If you faithfully save this money that long, and at the end of the 6.5 years you still want this car, it is your money to spend as you want.  You will have had a long time to reconsider your course of action, but you will have sacrificed for a long time, and you will have the money to lose.  However, you may find out a year into this process that you are spending too much money saving for this car, and reconsider. If, instead, you take out a loan for this car, then by the time you decide the car was too much of a stretch financially, it will be too late.  You will be upside down on the loan, and it will cost you thousands to sell the car. So go ahead and start saving.  If you haven't given up before you reach your goal, you may find that in 6.5 years when it is time to write that check, you will look back at the sacrifices you have made and decide that you don't want to simply blow that money on a car. Consider a different goal.  If you invest this $1300 a month and achieve 8% growth, you will be a millionaire in 23 years. * You don't need to take my word for it.  Look at the car you are interested in, go to kbb.com, select the 2012 version of the car, and look up the private sale value.  You'll most likely see a price that is about half of what a new one costs. If you are looking to build wealth, leasing is a bad idea.  But so is buying a new car.  All cars lose value once you buy them.  New cars lose anywhere between 30-60% of their value in the first 4 years of ownership. Buying a good quality, used car is the way to go if you are looking to build wealth.  And keeping the car for a while is also desirable.  Re-leasing every three years is no way to build wealth. The American Car Payment is probably the biggest factor holding many people back from building wealth.  Don't fall into the trap - buy a used car and drive it for as long as you can until the maintenance gets too pricey.  Then upgrade to a better used car, etc. If you cannot buy a car outright with cash, you cannot afford it.  Period. "Lachlan has $600 cash and a car worth $500. That's $1,100. The new car is priced at $21,800. Lachlan needs a loan for $20,700. However, the finance company insists that the buyer must pay a 10% deposit, which is $2,180. Lachlan only has $1,100, so no loan.  The car dealer wants to make a sale, so suggests some tricks. The car dealer could buy Lachlan's old banger for $1,500 instead of $500, and sell the new car for $22,800 instead of $21,800. Doesn't make a difference to the dealer, he gets the same amount of cash. Now Lachlan has $600 cash and $1,500 for his car or $2,100 in total. He needs 10% of $22,800 as deposit which is $2,280. That's not quite there but you see how the principle works. Lachlan is about $200 short. So the dealer adds $1,200 to both car prices. Lachlan has $600 cash and a car ""worth"" $1,700, total $2,300. The new car is sold for $23,000 requiring a $2,300 deposit which works out exactly.  How could we have found the right amount without guessing?  Lachlan had $1,100. The new car costs $21,800. The dealer increases both prices by x dollars. Lachlan has now $1,100 + x deposit. The car now costs $21,800 + x. The deposit should be 10%, so $1,100 + x = 10% of ($21,800 + x) = $2,180 + 0.1 x.  $1,100 + x = $2,180 + 0.1 x : Subtract $1,100 x = $1,080 + 0.1 x : Subtract 0.1 x 0.9 x = $1,080 : Divide by 0.9 x = $1,080 / 0.9 = $1,200 The dealer inflates the cost of the new car and the value of the old car by $1,200. Now that's the theory. In practice I don't know how the finance company feels about this, and if they would be happy if they found out." The only reason to lend the money in this scenario is cashflow. But considering you buy a $15000 car, your lifestyle is not super luxurious, so $15000 spare cash is enough. "The optimal down payment is 100%. The only way you would do anything else when you have the cash to buy it outright is to invest the remaining money to get a better return.  When you compare investments, you need to take risk into account as well.  When you make loan payments, you are getting a risk free return.  You can't find a risk-free investment that pays as much as your car loan will be.  If you think you can ""game the system"" by taking a 0% loan, then you will end up paying more for the car, since the financing is baked into the sales [price in those cases (there is no such thing as free money).  If you pay cash, you have much more bargaining power.   Buy the car outright (negotiating as hard as you can), start saving what you would have been making as a car payment as an emergency fund, and you'll be ahead of the game. For the inflation hedge - you need to find investments that act as an inflation hedge - taking a loan does not ""hedge"" against inflation since you'll still be paying interest regardless of the inflation rate.  The fact that you'll be paying slightly less interest (in ""real"" terms) does not make it a hedge. To answer the actual question, if your ""reinvestment rate"" (the return you can get from investing the ""borrowed"" cash) is less than the interest rate, then the more you put down, the greater your present value (PV). If your reinvestment rate is less than the interest rate, then the less you put down the better (not including risk).  When you incorporate risk, though, the additional return is probably not worth the risk. So there is no ""optimal"" down payment in between those mathematically - it will depend on how much liquid cash you need (knowing that every dollar that you borrow is costing you interest)."