Can I deduct more with leasing or buying over 3 years?

It depends on the vehicle price and your tax situation. For vehicles under 6,000 lbs, leasing often provides more total deductions over three years because the passenger car depreciation caps limit annual write-offs on purchased vehicles. For heavy vehicles over 6,000 lbs, buying with Section 179 and bonus depreciation can front-load most of the deduction into year one.