The residual is determined by the leaseholder--usually the manufacturer's finance arm. The higher the residual, the lower the depreciation over the term. Lower depreciation, all things equal, means lower payment.
The money factor is easy: If you already have APR interest rate, simply divide by 2400 to get money factor. Or if you have money factory and want APR interest rate, multiply by 2400. (Yes, it’s always 2400).
Example 1 – If you have APR interest rate: 4.5%. Divide by 2400. Money Factor = .001875
Example 2 – If you have Money Factor: .001875. Multiply by 2400. APR Interest Rate = 4.5%
Cars with high residuals and low money factors are bargains, payment-wise.