Taxes are factored into the lease payment, so you're only taxed on the part of the lease you pay for. However, leases have a LOT more restrictions and limit you on what you can do to the car and mileage you can drive. Overall, with a lease, you pay a premium for convenience. If you're willing to pay that premium, then sure, lease it. Same thing as buying new vs used.
The main thing we need to know is Money factor (dealer may quote you "interest rate" or "apr" which is just the money factor * 2400), residual, and lease length and mileage.
Keep in mind that you negotiate the cost of the car FIRST. NEVER mention leasing or buying, even though they ask you. Lease is done through the BANK, not the dealer, so the dealer will have more leverage to try to talk you into a higher selling price if they hear "lease" up front.
Take a look at this calculator.
http://vehicles.automobilemag.com/am...0/leasing.html