Disclaimer: This site is an independent editorial resource providing general information and estimates about new-car buy vs. lease financial decisions. It is not financial, tax, or legal advice. Tax treatment of business vehicle expenses, EV credits, and loan-interest deductions under the One Big Beautiful Bill Act (OBBBA) varies by individual circumstance - consult a licensed tax professional before relying on any figures for a filing decision. Calculator outputs are estimates based on the inputs provided and current market conventions; actual dealer quotes, APRs, money factors, residuals, and residual buyout prices may vary. This site is not affiliated with any manufacturer, captive finance arm, bank, insurance company, or extended warranty provider. All trademarks are property of their respective owners. Tax rules, APR tiers, and lease terms change frequently. Data verified April 2026. Confirm specifics with your lender, dealer, or CPA.

Cohort Guide / April 2026

Buy vs Lease for the Self-Employed

For a self-employed Schedule C filer or single-member LLC, the buy-vs-lease decision is fundamentally different from the personal-buyer comparison. Three tax mechanisms (Section 179, bonus depreciation under IRC 168(k), and the actual-expense lease deduction) all interact with the business-use percentage to change the after-tax cost of either path. The OBBBA loan-interest deduction does not apply to business vehicles. The standard mileage rate is usually simpler but often less generous than the actual-expense method on heavy-business vehicles. This guide walks through the three tax paths, the mileage-log requirements, and the specific scenarios where lease beats buy and where buy beats lease for self-employed taxpayers.

The three tax paths, summarized

Standard mileage rate. The simplest method. The IRS publishes a per-mile rate (for 2025, $0.67 per business mile, per IRS Standard Mileage Rates). The taxpayer keeps a mileage log and multiplies business miles by the rate. No tracking of gas, insurance, or repairs is required. The standard rate already includes a depreciation component. Once chosen on a purchased vehicle in year one, you can switch to actual-expense in later years only with strict limits; on a leased vehicle, you must use the same method for the entire lease term.

Actual-expense method, leased vehicle. The lease payment, fuel, insurance, registration, repairs, and tires are summed and multiplied by the business-use percentage. The IRS adds an inclusion amount for leased vehicles above an annually-published FMV threshold (around $60,000 for 2026), modestly reducing the deduction. Per IRS Publication 463, the inclusion amount tables are in the back of the publication and updated each year.

Actual-expense method, purchased vehicle, with Section 179 and bonus depreciation. The taxpayer claims a portion of the vehicle's purchase price as a Section 179 deduction in year one (capped per IRC 280F), plus a percentage of the remainder under Section 168(k) bonus depreciation (phasing down per the original IRA schedule), plus MACRS depreciation over five years on the remaining basis. This front-loads the deduction heavily into year one for vehicles purchased for predominantly business use. Multiply each year's deduction by the business-use percentage.

Worked example: 80% business use, $48,000 SUV over 6,000 lbs GVWR

A self-employed consultant drives 18,000 business miles per year (4,500 personal). Vehicle: 2026 Toyota Sequoia (GVWR 7,300 lbs, over 6,000 threshold so eligible for the higher Section 179 SUV cap). Negotiated price $48,000. Business use 80%.

Buy path: Section 179 election captures roughly $32,000 of the basis in year one (per the SUV cap). Bonus depreciation at 20% for 2026 captures another $3,200 of the remaining $16,000. MACRS depreciation handles the residual $12,800 over five years. Year one total depreciation: roughly $35,200 multiplied by 80% business use = $28,160 deduction. At a 25% combined marginal federal and SE-tax rate, tax savings in year one: roughly $7,040. Year-two MACRS deduction multiplied by 80%: roughly $1,840. Subsequent years similar. Total year-one tax savings concentrated heavily up front.

Lease path: Lease at $675 per month for 36 months = $24,300 in lease payments. Plus fuel, insurance, repairs, registration at perhaps $4,200 per year = $12,600 over three years. Total actual expenses: $36,900. Multiplied by 80% business use = $29,520 deductible over three years (roughly $9,840 per year). Tax savings at 25% rate: $2,460 per year, or $7,380 over three years.

The buy path yields larger year-one tax savings ($7,040 vs $2,460) but loads them up front. The buyer can then re-depreciate a different vehicle in year four. The lease path yields a smoother three-year tax-saving stream but turns into a re-lease decision at month 36. Over a five-year window with consistent 80% business use, the two paths converge in total tax savings to within $1,500 to $2,500 of each other, with buy slightly ahead. The decision often comes down to cash flow (lease wins) versus tax-deduction concentration (buy wins).

When standard mileage beats actual expense

The standard mileage rate is the simpler and often the better choice for self-employed taxpayers driving high business miles on inexpensive vehicles. At $0.67 per mile, 20,000 business miles per year on a 2020 Toyota Corolla (cost basis $14,000, current value $12,000) generates a $13,400 deduction with no need to track gas, insurance, or repairs. The actual-expense method on the same vehicle would yield depreciation of perhaps $2,200 (year five of MACRS) plus $2,800 in fuel, insurance, and maintenance multiplied by business-use percentage, totaling around $4,500 to $5,500.

The crossover point is roughly: standard mileage wins on inexpensive, high-mileage vehicles; actual expense wins on expensive (above $40,000) or low-mileage (under 10,000 business miles per year) vehicles. The CPA-recommended approach: estimate both methods for the first tax year before committing, since the choice is locked in for the vehicle's service life on a purchase (or for the lease term on a lease).

Audit risk and the mileage log

Vehicle deductions are an IRS audit flag for self-employed filers, particularly when the claimed business-use percentage is high (90%+) on a single household vehicle, when Section 179 is claimed on a near-luxury SUV, or when actual-expense deductions exceed standard-mileage by a wide margin. The IRS does not disallow the deduction simply because it is large; the disallowance happens when the documentation does not support the claim.

The required documentation is a contemporaneous mileage log (date, destination, business purpose, miles) covering every business trip, plus receipts for gas, insurance, repairs, and registration if claiming actual expense. Mileage-tracking apps (MileIQ, TripLog, Everlance, Stride) automate the log and export an IRS-ready PDF at year end. The cost is $5 to $10 per month and the audit defensibility is substantial.

SELF-EMPLOYED: IT DEPENDS, BUT LEAN BUY FOR HEAVY-USE EXPENSIVE VEHICLES

For a self-employed taxpayer with 80%+ business use on a vehicle over $40,000 MSRP, buying with Section 179 plus bonus depreciation typically generates more year-one tax savings than leasing with actual-expense deduction. For inexpensive vehicles (under $25,000) or low business-use percentages (under 60%), the standard mileage method on a purchased vehicle usually wins. Leasing wins when the taxpayer wants smooth cash flow, plans to upgrade every 36 months, and values a fixed-known monthly cost in their P&L.

Self-employed FAQ

Can a self-employed person take Section 179 on a vehicle? ⌄
Yes, if the vehicle is purchased (not leased), placed in service in the tax year, and used more than 50% for business. Single-member LLCs and sole proprietors filing Schedule C are eligible for Section 179. The deduction caps in IRC 280F apply: for 2026, a passenger vehicle has a first-year limit around $12,200 under Section 179 plus a Section 168(k) bonus depreciation amount that has been phasing down (60% for 2024, 40% for 2025, 20% for 2026, per the original IRA schedule though Congress periodically adjusts). SUVs with a GVWR over 6,000 lbs have a higher Section 179 cap, around $32,000 for 2026, before the percentage limit applies.
Is the standard mileage rate or actual expense better for self-employed? ⌄
It depends on the vehicle and business-use percentage. The 2025 IRS standard mileage rate is $0.67 per mile (2026 rate is published in IRS Notice 2025-XX, typically late in the prior year). For a vehicle driven 15,000 business miles per year, the standard mileage deduction is $10,050. The actual-expense method tallies all costs (depreciation or lease payments, gas, insurance, repairs, registration) multiplied by the business-use percentage. For expensive vehicles (over $50,000 MSRP) used heavily for business, actual-expense usually wins because depreciation and lease payments dominate. For inexpensive vehicles used moderately for business, standard mileage usually wins. You must choose one method in the first year the vehicle is in service; you can switch from actual-expense to standard later only for leased vehicles, and from standard to actual-expense only with strict limits.
How does the lease payment deduction work for a self-employed taxpayer? ⌄
Under the actual-expense method, the monthly lease payment is deductible in proportion to the business-use percentage. A vehicle used 80% for business with a $650 monthly lease payment yields $520 per month in deductible expense, or $6,240 per year. Add fuel, insurance, registration, maintenance also at 80%. The IRS requires an 'inclusion amount' add-back for leased luxury vehicles above an annually-published fair-market-value threshold (around $60,000 for 2026), which modestly reduces the lease deduction. The inclusion amount is published in an IRS Revenue Procedure each year; consult your CPA for the exact figure on your vehicle.
Does the OBBBA loan-interest deduction apply to self-employed buyers? ⌄
Only for personal-use vehicles. The One Big Beautiful Bill Act (OBBBA) loan-interest deduction (up to $10,000 per year, above-the-line, for US-assembled new vehicles purchased 2025-2028) explicitly excludes business-use vehicles. A self-employed taxpayer who uses the vehicle 100% for business cannot claim the OBBBA deduction; the interest is already deductible as a business expense on Schedule C. A taxpayer who uses the vehicle 60% for business and 40% personal can claim the OBBBA deduction on the personal-use portion of the interest, subject to the income phase-out (starts at $100,000 MAGI single, $200,000 joint). Talk to a CPA about the allocation.
What mileage log is acceptable to the IRS? ⌄
Per IRS Publication 463, the log must be contemporaneous (recorded at or near the time of each trip) and include date, destination, business purpose, and miles. Acceptable formats include a paper logbook, a spreadsheet maintained throughout the year, or a mileage-tracking app (MileIQ, TripLog, Everlance, Stride). Reconstructing a log at year-end from credit-card statements and calendar entries is risky because the IRS auditor can disallow undocumented miles. The best practice for self-employed is to enable a mileage app's automatic detection at the start of the tax year and review classifications weekly.
Can I deduct the down payment on a purchased business vehicle in year one? ⌄
Not directly. The down payment reduces the loan principal but the deductible expense is the depreciation (Section 179 in year one if elected, or MACRS depreciation thereafter) multiplied by business-use percentage. The down payment becomes part of the vehicle's basis for depreciation. For example: a $40,000 vehicle with a $10,000 down payment has a $40,000 basis. Section 179 (with the 2026 caps) plus bonus depreciation can absorb a large portion of that $40,000 in year one, depending on GVWR. Talk to a CPA before signing, especially for vehicles over $40,000.

Related pages

Business Lease vs BuySection 179 vs Lease DeductionBuy vs Lease SUVBuy vs Lease PickupLease MechanicsBreak-Even Calculator

Updated 2026-04-27