FAVR vs. CPM: Which Vehicle Reimbursement Method Is Right for Your Company?
Choosing between FAVR and CPM is one of the most consequential decisions a finance or HR leader can make for their mobile workforce. We break down the key differences, tax implications, and when each method makes sense.
Published January 12, 2026. Updated January 12, 2026. By Kliks Editorial Team.
The Two Most Common Vehicle Reimbursement Methods
When your employees use their personal vehicles for work, your company has a legal and ethical obligation to reimburse them fairly. The IRS provides two primary frameworks for doing this compliantly: Fixed and Variable Rate (FAVR) and Cents-Per-Mile (CPM). Understanding the difference between them - and choosing the right one - can save your company tens of thousands of dollars annually while keeping your drivers satisfied and your payroll tax-free.
What Is FAVR?
FAVR, or Fixed and Variable Rate reimbursement, is an IRS-approved method (governed by Revenue Procedure 2019-46) that reimburses employees in two components:
- Fixed payment: Covers ownership costs that don't change with mileage - insurance, registration, depreciation, and financing. This is paid monthly regardless of miles driven.
- Variable payment: Covers costs that fluctuate with usage - fuel, oil, maintenance, and tires. This is calculated per mile driven.
The defining feature of FAVR is geographic precision. Because fuel prices, insurance rates, and vehicle depreciation vary dramatically between, say, rural Montana and downtown Los Angeles, FAVR rates are calculated using localized cost data for each driver's home zip code. This means a driver in a high-cost urban area receives a higher reimbursement than a driver in a low-cost rural area - which is both fairer and more defensible to the IRS.
FAVR reimbursements are 100% tax-free for both the employer and the employee, provided the program is administered correctly. No payroll taxes. No income taxes. No W-2 implications.
What Is CPM?
Cents-Per-Mile is the simpler of the two methods. The company sets a rate per mile driven - either the IRS standard mileage rate (72.5 cents/mile in 2026) or a custom rate - and reimburses employees based on the miles they log.
CPM is easy to understand and administer. Drivers log their trips, the system multiplies miles by the rate, and the reimbursement is paid. There's no geographic complexity, no fixed component, and no actuarial calculations required.
The tradeoff is precision. A single rate applied to all drivers ignores the reality that a driver in San Francisco has dramatically higher vehicle ownership costs than a driver in rural Kansas. High-mileage drivers in expensive markets are often under-reimbursed; low-mileage drivers in inexpensive markets may be over-reimbursed.
CPM reimbursements are also tax-free when the IRS standard rate is used and proper mileage documentation is maintained.
FAVR vs. CPM: Side-by-Side Comparison
| Factor | FAVR | CPM |
|---|---|---|
| Tax treatment | 100% tax-free | Tax-free at IRS rate |
| Geographic precision | High (zip-code level) | None |
| Administrative complexity | Moderate | Low |
| Best for | High-mileage, dispersed teams | Occasional or part-time drivers |
| Minimum driver requirement | 5 drivers | No minimum |
| IRS compliance | Rev. Proc. 2019-46 | Standard mileage rate |
| Cost accuracy | Very high | Moderate |
When to Choose FAVR
FAVR is the right choice when your workforce includes employees who drive regularly for work - typically more than 5,000 miles per year - and when those employees are spread across different geographic regions. It's particularly well-suited for:
- Sales teams with large territories spanning multiple states
- Field service organizations with technicians spread across urban and rural markets
- Companies with 50+ drivers where the administrative investment pays off at scale
- Organizations that want to eliminate payroll tax exposure on reimbursements entirely
The precision of FAVR also makes it easier to defend in an IRS audit. Because rates are calculated using published cost data and actuarial methods, the program is inherently documented and defensible.
When to Choose CPM
CPM makes sense for organizations where driving is occasional or supplementary rather than a core job function. It's the right fit for:
- Companies with fewer than 5 drivers (FAVR requires a minimum of 5)
- Employees who drive infrequently - a few hundred miles per month or less
- Organizations that want simplicity over precision
- Companies just starting a reimbursement program who want to get something in place quickly
Many companies use both methods simultaneously: FAVR for their core field sales or service team, and CPM for occasional drivers like managers who sometimes visit client sites.
The Hidden Cost of Getting It Wrong
Choosing the wrong method - or administering the right method incorrectly - creates real financial risk. If your CPM rate exceeds the IRS standard mileage rate, the excess is taxable income to the employee and subject to payroll taxes for the employer. If your FAVR program isn't administered according to Rev. Proc. 2019-46, the entire reimbursement can become taxable.
The good news is that modern platforms like Kliks handle all of this automatically. FAVR rates are calculated using current IRS-approved cost data, updated annually. CPM rates are validated against IRS limits. Compliance documentation is generated automatically. Your finance team doesn't need to become vehicle reimbursement experts - the platform handles it.
Making the Decision
The simplest decision framework: if your drivers average more than 5,000 miles per year for work and you have at least 5 drivers, FAVR will almost certainly save you money and provide better compliance coverage. If your drivers are occasional or you're just getting started, CPM is the faster path to a compliant program.
If you're not sure which is right for your organization, Kliks offers a free savings analysis that models both approaches against your actual driver data. Most companies are surprised by how much they're leaving on the table with a suboptimal reimbursement structure.