FAVR Reimbursement Guide
Use this guide when you need a cleaner employer reimbursement policy than a vague car allowance.
At a glance
- FAVR combines a fixed payment for ownership costs with a variable payment for business miles.
- The IRS treats FAVR as a mileage allowance method only if the arrangement satisfies specific reimbursement rules.
- A flat car allowance with no mileage substantiation is not the same thing as FAVR and usually creates taxable wages.
What FAVR is actually solving
FAVR stands for fixed and variable rate reimbursement. It is designed for employers that want something more tailored than a single cents-per-mile rate, especially when vehicle ownership costs and fuel costs vary meaningfully by geography or role.
The practical distinction is that a real FAVR program is still a reimbursement system. It is not just extra salary with the word mileage attached to it, and it still depends on substantiated business mileage.
Where the IRS line is
IRS Publication 463 draws the bigger boundary first: business reimbursements need accountable-plan treatment if an employer wants them excluded from wages. That means there must be a business connection, the employee must adequately account for the expense, and any excess reimbursement must be returned.
IRS mileage guidance then adds the FAVR-specific layer. Revenue Procedure 2019-46 describes FAVR as an allowance that combines periodic fixed and variable rate payments. If a program uses that structure but does not satisfy the FAVR requirements, the employer has to compare what was paid with the standard mileage amount and treat excess amounts as taxable wages.
- Use FAVR when you want reimbursement logic tied to ownership cost plus mileage cost.
- Do not present a monthly car allowance as tax-free reimbursement unless the arrangement truly satisfies accountable-plan rules.
- Keep substantiated business miles by period because quarterly true-up matters when the arrangement is not a simple cents-per-mile method.
How to compare FAVR with simpler options
A standard mileage reimbursement policy is easier to explain, easier to audit, and usually easier for a small team to run. FAVR becomes more defensible when you have higher-mileage field staff, regional cost differences, or a finance team that can manage periodic reviews.
If you are choosing between a flat allowance and a reimbursement model, start by deciding whether you want the payment to track actual business driving. If the answer is yes, a documented mileage method is usually cleaner than a vague stipend.
Official references
See accountable plan rules, standard mileage treatment, and reimbursement examples.
Defines FAVR and explains how fixed and variable payments are treated.
Continue with tools
Move from policy guidance into the calculator, rate page, or template that fits the same workflow.