--- title: "Car allowance" description: "A car allowance is a set payment for the business use of an employee's own car. How the IRS taxes it, how FAVR works and what to settle before you start one." canonical: https://engine.com/glossary/car-allowance updated: 2026-11-02 author: "Engine Editorial" --- # Car allowance A car allowance is an amount an employer pays employees for the business use of their own cars, usually a fixed sum each pay period regardless of miles driven. Also called: vehicle allowance Not to be confused with: mileage reimbursement Updated November 2, 2026 by Engine Editorial ## What is a car allowance? A car allowance is a set payment employees get for using their own cars for work. This cheat sheet covers how to think about one, how to compare it with mileage pay and what to settle before you write the policy. The detail is further down. ### How to think about it - **Fixed, not per mile.** The allowance shows up every pay cycle regardless of miles driven. It is one predictable number meant to offset fuel, insurance, maintenance, wear and tear and registration. - **Without accounting, it's wages.** If employees don't account for business use and return any excess, the allowance is paid under a nonaccountable plan and reported as wages in box 1 of the W-2. - **The IRS has two yardsticks.** An allowance can count as accounted for when it is no more than the federal rate, which for cars means the standard mileage rate or a fixed and variable rate (FAVR). Employees still prove the dates, places and business purpose of their driving. - **FAVR splits the cost.** A FAVR allowance pairs a cents-per-mile rate for gas and other running costs with a flat amount for fixed costs like depreciation and insurance. ### The math Compare the monthly allowance with business miles x the IRS rate. A $400 monthly allowance, against an employee who drives 600 business miles a month at the 76-cent IRS rate. 600 x $0.76 = $456 _Illustrative example. Engine's car allowance guide uses the same break-even comparison. The IRS business rate is 76 cents a mile for July 1 to Dec. 31, 2026._ ### Before you write the policy - **Track mileage first.** Track three months of mileage by role before deciding between an allowance and mileage pay. - **Set amounts from market data.** Survey local competitors or regional salary surveys, and adjust for local vehicle costs and distances. - **Write insurance standards.** Engine's sample policy asks for liability insurance with business-use coverage and annual proof. - **Explain the tax.** Tell employees early that a taxable allowance raises their taxable income. ## Car allowance vs. mileage reimbursement vs. FAVR | Method | How it's paid | How the IRS treats it | | --- | --- | --- | | Flat car allowance | The same amount every pay period | Wages in box 1 when paid without an accountable plan | | Mileage reimbursement | Business miles x a per-mile rate | Not taxable up to the IRS standard rate under an accountable plan | | FAVR allowance | A per-mile amount plus a flat amount for fixed costs | One of the two federal rates the IRS accepts for car allowances | ## Rent when the trip calls for it On Engine, you can book rental cars under the daily rate limits and vehicle rules your admins set. Free to use. [Get started](https://engine.com/sign-up) ## Questions ### Is a car allowance taxable? A flat allowance paid without an accountable plan is added to wages and reported in box 1 of the W-2. An allowance paid under an accountable plan, at or below the federal rate, with the business use proven, isn't reported as wages. ### What's the difference between a car allowance and mileage reimbursement? A car allowance pays the same amount each period no matter how far the employee drives. Mileage reimbursement pays for each business mile, often at the IRS standard rate. ### What is a FAVR allowance? A fixed and variable rate allowance. The employer pays a cents-per-mile amount for running costs like gas and oil, plus a flat amount for fixed costs like depreciation or lease payments and insurance. ### How much is a typical car allowance? Engine's sample policy uses $400 to $600 a month depending on the role. Its guide recommends setting amounts from local market data, vehicle costs and distances. ## Go deeper - [How to write a car allowance policy](https://engine.com/blog/car-allowance-policy) - [Mileage reimbursement](https://engine.com/glossary/mileage-reimbursement) - [Rental car booking on Engine](https://engine.com/features/rental-car-booking) ## Sources 1. Internal Revenue Service, "Publication 463 (2025), Travel, Gift, and Car Expenses," https://www.irs.gov/publications/p463, accessed November 2, 2026. 2. Internal Revenue Service, "Standard mileage rates," https://www.irs.gov/tax-professionals/standard-mileage-rates, accessed November 2, 2026. 3. Engine, "How to Write a Car Allowance Policy for Field and Project-Based Roles," https://engine.com/blog/car-allowance-policy, accessed November 2, 2026. 4. Engine, "Rental Car Booking for Business Travel," https://engine.com/features/rental-car-booking, accessed November 2, 2026.