Why More Construction Companies Are Opting for FAVR

In this guide, we’ll break down why more construction companies are choosing Fixed and Variable Rate Reimbursement (FAVR), how it stacks up against fleets and cents-per-mile programs, and the steps you can take to cut costs while keeping crews safe on the road.

Life on the Road in Construction

Project managers, superintendents, site inspectors, and estimators spend a lot of time behind the wheel. It’s not unusual for these crews to log more than 15,000 business miles a year driving between dispersed job sites in half-ton pickups and light vans (https://cardata.co/blog/financial-monitoring-construction-industry/). With all that time on the road, safety has to be front and center. Motor vehicle crashes are still the leading cause of work-related deaths in construction, so any program that reimburses employees for using their own trucks also needs to take driver safety seriously (https://cardata.co/blog/tips-improve-fleet-management/).

Why FAVR Beats the Old Models

There are three main reasons FAVR has pulled ahead of fleets, flat allowances, and the IRS cents-per-mile rate.

First, FAVR lines up payments with the real business required costs of owning and operating a vehicle. It covers both fixed costs like depreciation, insurance, and registration, and variable ones like fuel, tires, and maintenance. That balance cuts out the guesswork and helps stop overpaying. Construction organizations that move to FAVR often see vehicle costs drop 30% compared to taxable allowances, which lose around 37.65% to employee and employer payroll taxes under IRS regulations (https://cardata.co/blog/the-employers-guide-to-favr-car-allowances/).

Also, mileage-tracking apps do the logging automatically. Drivers no longer waste hours filling out spreadsheets, and the time saved adds up—about 42 hours a year, which is basically a full work week (https://cardata.co/blog/drivers-benefit-mileage-reimbursements/).

Third, FAVR meets the rigid reimbursement and compensation laws in states like California, Illinois, and Massachusetts. That gives companies peace of mind knowing their programs will hold up under legal review (https://cardata.co/blog/the-true-cost-of-a-car-allowance/).

Where Construction Companies Are Heading Now

Roughly 60 to 65% of mid- and large-size construction companies now default to FAVR, especially in the Sunbelt and Mountain West, where job sites are often 60–80 miles apart and diesel prices swing wildly from week to week (https://cardata.co/blog/impact-of-inflation-on-car-allowances/). About a quarter of firms—usually smaller outfits or those with only occasional drivers—stick with the IRS cents-per-mile rate, which the Service raised to $0.70 in 2025 (https://cardata.co/blog/mileage-rate/). Fewer than one in ten companies still cut a flat allowance, and that share is shrinking fast as finance chiefs notice the tax leakage (https://cardata.co/blog/the-true-cost-of-a-car-allowance/). Mixed policies are growing, letting companies place high-milers on FAVR while reimbursing infrequent drivers at the CPM rate to preserve equity and administrative simplicity (https://cardata.co/blog/taxation-vehicle-reimbursement-favr-cpm-allowance/).

Unmasking the True Cost of a Company Fleet

Running a company fleet is expensive. Once you add up depreciation, insurance, and the cost of vehicles sitting idle, it ends up costing about 30% more than a FAVR program (https://cardata.co/blog/are-fleets-of-company-vehicles-a-good-option/). On top of that, commercial auto insurance can be nearly twice as expensive as a personal policy, and even then the company is usually still on the hook if there’s a crash (https://cardata.co/blog/fleet-vehicles-real-cost/). A different approach is to reimburse employees for using their own trucks, as long as they carry the right level of personal insurance. That way, construction companies shift the first layer of liability without sacrificing coverage. Some firms also pair this with defensive-driving courses, and the results are striking—participating organizations have reduced accident rates by more than 50% (https://cardata.co/blog/fleet-safety/).

Designing a Compliant, Low-Risk FAVR Program

The IRS sets straightforward rules for running a compliant FAVR plan. Each participating driver needs to log at least 5,000 business miles a year. The vehicle you use for rate calculations can’t have a sticker price higher than $60,800. And the company has to keep mileage logs that are up to date and ready in case of an audit (https://cardata.co/blog/the-employers-guide-to-favr-car-allowances/). Construction companies typically segment usage so that employees driving fewer than 5,000 miles remain on CPM, while those who drive over 5,000 annual business miles default to the FAVR model (https://cardata.co/blog/taxation-vehicle-reimbursement-favr-cpm-allowance/). Doing a twice-yearly verification of insurance, with minimum limits of $100k/$300k/$100k, and sticking to OEM maintenance schedules goes a long way toward protecting the company if there’s ever an accident on the road (https://cardata.co/blog/tips-improve-fleet-management/).

What the Numbers Look Like in Real Life

For a typical construction driver, the numbers add up quickly. Most make 60 to 80 work trips a month, which comes out to around 1,400 to 1,800 miles monthly. Now put that into dollars. A flat car allowance of $750 a month sounds simple, but once payroll taxes are applied, the true cost to the employer is much higher when you include sunk taxes. A FAVR plan, on the other hand, might set a fixed payment around, for example, $485 and then add a variable rate of about $0.29 per mile. Quarterly updates to fuel and maintenance data keep reimbursements fair, even when diesel prices jump or used-truck values slide (https://cardata.co/blog/impact-of-inflation-on-car-allowances/). And outsourcing FAVR administration often costs half as much as hiring another HR staffer, while giving companies better controls and real-time dashboards that flag mileage issues before they become budget problems. (https://cardata.co/blog/should-hr-outsource-their-car-allowance-program-four-considerations/).

Practical Steps You Can Put in Place Now

First, default full-time employees who exceed 5,000 business miles to a fully compliant FAVR program; the savings and tax advantages are too large to ignore. Second, retain the cents-per-mile rate for genuine low-milers so reimbursement remains equitable without drowning the finance team in exceptions. However, pair this with GPS-powered accountable mileage tracking tools to ensure no over or underpayment, and save a week of admin work per year. Third, insist on defensive-driving certification within 90 days of hire and verify licenses and insurance every six months to keep liability in check. Finally, work with a trusted FAVR partner to refresh fixed and variable rates to stay ahead of inflationary swings.

The Bottom Line for Contractors

FAVR has emerged as the gold standard for construction vehicle reimbursement because it mirrors real ownership costs, slashes payroll tax waste, and embeds safety and compliance into the process by design. Contractors that make the shift not only protect their margins; they also protect their people. The data are clear—moving to FAVR is no longer a nice-to-have efficiency play but a competitive necessity for 2025 and beyond.

Disclaimer: Nothing in this blog post is legal, accounting, or insurance advice. Consult your lawyer, accountant, or insurance agent, and do not rely on the information contained herein for any business or personal financial or legal decision-making. While we strive to be as reliable as possible, we are neither lawyers nor accountants nor agents. For several citations of IRS publications on which we base our blog content ideas, please always consult this article: https://www.cardata.co/blog/irs-rules-for-mileage-reimbursements. For Cardata’s terms of service, go here: https://www.cardata.co/terms.