I was having a private conversation on here with a friend of mine on here discussing this balloon payment program. I worked up some numbers comparing the balloon payment plan to a 6 year loan at 3% interest (and you can probably get less than that right now). The sales tax in my county is 8.625%. I'm going to assume the residual percentage on the GT-Line is 52% (instead of the higher 53% or 54%). From what I read online about the Ford Mach E balloon payment plan you have to pay sales tax on the full MSRP of the vehicle.
The following calculations are for a GT-Line in yacht blue with MSRP $57,640 which includes suede seats ($295), carpeted floor mats ($170) and wheel locks ($60).
Tax on full MSRP $57.640.00 * 8.625% = $4,971.45
Monthly payment calculation for the balloon payment plan
52% of MSRP = balloon payment amount (i.e. residual) = $29,972.80
48% of MSRP (financed amount) = $27,667.20
$27,667.20 (48% of MSRP) + $4,971.45 (sales tax on full MSRP) - $8,000 ($7500 federal + $500 NY state tax credits) = $24,638.65
Monthly payment on loan amount of $24,638.65 with 4.25% interest rate for 3 years = $730.17
Monthly payment calculation for a regular purchase using a 3% loan for 6 years assuming your down payment amount is the tax credits
$57.640.00 (MSRP) + $4,971.45 (sales tax) - $8,000 ($7500 federal + $500 NY state tax credits) = $54,611.45
Monthly payment on loan amount with 3% interest rate for 6 years = $829.75
The balloon payment plan saves about $100/month or $1200/year over a 6 year purchase loan and after 3 years if it's worth significantly less than the residual then I can turn it in and walk away. However, I have 2 issues with the balloon payment plan. First, if you turn in the car after 3 years then you've effectively paid extra sales tax on a vehicle that you don't own so you can't use it as a trade in to reduce the sales tax on the next car you buy. The second issue is with the interest rate of 4.25% in the balloon payment plan. That's high right now but maybe it won't be in a few months with interest rates rising.