We bought a Tesla. In the process, they’re offering a 0% APR promotion. They let you see how your credit rating affects your monthly payment (through different APRs). The final column in the table below shows the increase each level adds from the previous level.

This is based on a 60 month term. So, ignoring the promotional option available, between the ‘>720’ and ‘680-720’ would cost you $39 per month. That’s a total of $2,340 over the loan term. By using the promotional rate, that’s $88 per month “saved,” which is $5,280. Don’t let it be lost that working on your credit history and credit worthiness is something that pays off into the future.

When we look into a large sum of money leaving our account, we consider the “net present value” of the dollars. The net present value is the difference between the present value of cash inflows and the present value of cash outflows over a period of time. Investopedia uses the following over-simplified example. “An investor could receive $100 today or a year from now. Most investors would not be willing to postpone receiving $100 today. However, what if an investor could choose to receive $100 today or $105 in one year? The 5% rate of return might be worthwhile if comparable investments of equal risk offered less over the same period.”

The 0% interest loan through Tesla is for about $40,000. Mr. ODA calculated that our net present value of money, based on our approximately 4% savings interest rate, is $36,017. Taking nearly $40k out of our savings account wouldn’t be a financial problem, but it’s not the smartest financial move in our portfolio. Instead, we’re going to pay about $580 per month, while the “balance” of that $40k earns interest. At 4% interest, the balance of $40k earns nearly $1,000 in a year. That balance will continue to dwindle, therefore lowering the interest earned each year, but it’s still a significant sum of money. In the first few years, the interest earned is essentially paying a couple of months worth of the car payment.

By being conscious of our financial standing in the world, we’ve set ourselves up for earning these promotions. Had our credit worthiness been below a score of 720, it would have cost us over $5k more over those 5 years of the loan. While I understand that purchasing a Tesla may be considered a luxury, this concept and awareness can be applied across all financial decisions, which is why I wanted to highlight it here.