eisbock
Member
Let's say I want to buy a brand new $50000 Model 3. I happen to have $50000 cash sitting in my bank account and I'm debating taking a loan and investing the cash or just paying cash.Waitasec... Are you guys saying there is a Money Market, SPDR ETF, REIT, trust fund, Stock, Bond, or other investment vehicle that pays a guaranteed 8% amortized compound interest rate over time? Awesome! What's it's name, and how do I get in...?
Because really? If you are talking about flat rate interest, it just ain't the same thing. Amortization be da DEBiL! Yes, even at 'low interest rates' -- especially over longer loan periods.
If I take a 5 year loan at 5% APR, I'm looking at roughly $6614 in interest.
If I invest that $50k cash into something with a 5% APR return, I'm looking at $14168 in interest, which means after 5 years, I walk away with $7554, which also means I just reduced my $50k Model 3 to the modest sum of $42.5k. Not a bad deal. So how low can my investment rate go until I break even with my loan? Roughly 2.5%.
So if you can guarantee a return of 3% or better on your $50k cash, it makes sense to take a loan out on the car and invest the cash. Plus, this gives you a nice chunk of change to keep earning money on, as opposed to slowly building up that $50k nest egg again over several years after buying your Model 3. You'd be losing out on thousands of dollars by doing that even if your investments just broke even over your loan, because now you have those few thousand more to earn compound interest later on after the car is payed off.
Now, if I can get a sweet amortized loan at 3%, I only need a 1.5% return on my investments. All of a sudden, that's looking pretty doable without a lot of effort or risk. Online 5-year CDs can get you up to 2%.
The only upside to forking over the $50k cash in full is if you don't want to deal with the hassle of monthly payments or worrying about ensuring that your investments pay off. For some people, this is worth the few thousand dollars they could save.
What is the best approach?
Please, somebody correct me if I'm way off base here. My new year's resolution is to be more proactive in learning about investments, loans, and financing for what will surely be the largest purchase of my life so far.