I'm new to all of this, so please forgive me if I'm doing it wrong, but...
My understanding of a lease is that you're paying the amount of depreciation the car undergoes while in your care: the lease principal. Plus you pay interest on that amount. The lessor (US Bank in this case) takes a risk on what the residual value of the car will be at the end of three years, but they make money on the principal by charging interest over that period. If the car ends up worth what they predict ($56,000 in my case) they can resell it and bank the interest they made on the loan.
My car is valued at $90,700 (after the $1000 referral discount) and its predicted residual value is $56,100. The bank is paying $90,700 to Tesla, and getting back only $56,100 three years from now, so they are losing $34,500 on the deal. Of course they are going to charge me for this loss, plus interest. They do it like this:
$5,000 up front (cap cost reduction), leaving a $29,500 loss. Then they let me pay that $29,500 over three years. But of course they want interest. My payment (excluding tax) is $1049. Using a calculator like
Determine a loan rate and entering $29,500 principal, $1049 monthly payment, 36 months, the interest is 16.8%
Is that right?