Lease or Buy a Business Vehicle? The Tax and Cash-Flow
A business can deduct lease payments or write off a purchase with Section 179 — but the right call depends on cash flow, the GVWR, and how long you keep the vehicle. Here is the side-by-side so you do not leave tax money on the table.
By The VehCalc Editorial Team · 2026-05-18 · reviewed against official sources
Key takeaways
- Buying unlocks Section 179; leasing deducts the business portion of payments.
- Over-6,000-lb vehicles get a far larger 179 deduction than cars.
- Leasing preserves cash but you never own the equity.
- Lease payments face the luxury-auto lease cap on deductions.
- Run both with the Section 179 calculator.
The two deduction paths
Buy a business vehicle with a loan and you can deduct the full cost up front via Section 179 (capped by GVWR), plus interest and operating costs. Lease it and you deduct the business-use portion of each lease payment instead — simpler, but spread over time and subject to the luxury-auto lease cap. The choice is really about cash flow now versus equity and a big deduction now.
The GVWR lever again
If the vehicle is over 6,000 lb GVWR, buying with Section 179 can deduct roughly $30,500 in year one versus a passenger car's ~$12,400 cap. Leasing that same heavy vehicle still only deducts payments. For heavy work trucks, buying usually wins on tax.
Lease vs. buy, scored
| Factor | Buy + 179 | Lease |
|---|---|---|
| Upfront deduction | Large (GVWR-based) | Per-payment |
| Cash outlay | Down + payments | Lower monthly |
| Equity at end | You own it | Buyout or return |
| Best for | Heavy / keep long | Light / rotate |
Cash flow is the quiet decider
A startup with thin cash may prefer leasing's lower monthly hit even if buying saves more tax — because the deduction only helps if you have profit to offset. A profitable business keeping a truck for ten years usually wins by buying and taking Section 179. Either way track business mileage; see Section 179 guide for the 50% rule.
Model both before you sign
Do not pick on gut feel. Run the purchase deduction in Section 179 calculator and compare to the lease payment math in lease vs buy calculator. For the loan itself, commercial truck loan rates show current terms.
Frequently asked questions
Is it better to lease or buy a business vehicle for taxes?
Can I use Section 179 on a leased vehicle?
Does GVWR change the lease-vs-buy math?
What if my business has little profit?
Calculate Section 179 vehicle depreciation deduction for business vehicles. See limits for SUVs, trucks, and passenger cars in 2026.
Related guides
Section 179 for Vehicles: How Business Owners Write Off
Section 179 can let a business deduct the entire cost of a work vehicle in the year it is bought — but a normal sedan is capped at about $12,400, while a vehicle over 6,000 lbs GVWR can be deducted almost in full. The GVWR number on the door jamb is the whole game.
Commercial Truck Loans: Rates, Down Payments
Commercial truck loans are equipment financing, not car loans: rates run 7–12%, down payments 10–25%, and lenders want business financials plus the truck's VIN and specs. Here is what to expect and how to prepare.
What It Really Costs to Run a Work Truck Monthly in 2026
A work truck's payment is the smallest part of what it costs to own. Diesel maintenance, commercial insurance, and tires dominate the monthly reality — and a truck doing 25,000 miles a year burns real money. Here is the per-mile and per-month math.