Published: May 2026
Last Updated: August 5th, 2026
Executive Summary
Many trucking company owners believe per diem must be structured as a reduction in taxable wages. That is the most common setup in trucking payroll, but it is not the only legal option.
A trucking company can also pay per diem as a straight reimbursement on top of wages instead of substituting it for wages. In some situations, that structure may make more sense operationally, culturally, or strategically.
The key is understanding the difference between:
- A wage substitution per diem plan
- A true reimbursement per diem plan
Both can be legal when handled correctly. Both have different implications for payroll taxes, workers’ compensation, recruiting, and driver perception.
The problem is many payroll providers only understand one version and present it as the only option.
Who Is This For?
This article is for:
- Trucking company owners evaluating driver pay structures
- Fleet managers reviewing compensation strategies
- Recruiters trying to understand pay package differences
- Trucking insurance agents dealing with audit confusion
- CPAs and advisors working with transportation clients
- Trucking companies currently offering per diem and wondering if there is another way to structure it
The Biggest Misunderstanding About Truck Driver Per Diem
When most people in trucking hear “per diem,” they immediately think of this:
“We reduce the driver’s taxable wages and replace part of it with non-taxable per diem.”
That is the structure most commonly used in payroll for trucking companies because it creates payroll tax savings for both the company and the driver.
But that is not the legal definition of per diem.
Per diem is fundamentally a reimbursement for travel expenses incurred while away from home for work.
That means a company can legally:
- Pay full wages
- Keep those wages intact
- Then separately reimburse qualifying per diem expenses
In other words, per diem does not have to come out of wages.
That surprises a lot of people in trucking because the industry has normalized the wage-substitution version almost exclusively.
The Two Main Ways Trucking Companies Handle Per Diem
1. Per Diem as a Substitute for Wages
This is the standard trucking model.
Example:
- Driver earns $1,500 gross pay
- Company designates $400 as non-taxable per diem
- Taxable wages become $1,100
The driver pays less payroll tax.
The employer pays less payroll tax.
This is the model most trucking companies use because it lowers tax burden immediately.
But it also:
- Reduces taxable wages
- Can reduce workers’ compensation exposure
- May reduce unemployment calculations
- May affect overtime calculations in certain situations
- Can create confusion for drivers reviewing pay stubs
This structure is common, but it is not mandatory.
2. Per Diem as a Straight Reimbursement
In this structure:
- The driver still earns the full wage amount
- The company separately reimburses qualifying per diem expenses
Example:
- Driver earns $1,500 taxable wages
- Company separately pays $400 per diem reimbursement
In this case:
- Taxable wages stay at $1,500
- The reimbursement is separate
- The company is not substituting wages
This often results in:
- Simpler driver communication
- Cleaner wage reporting
- Higher reported taxable income
- Higher payroll taxes compared to wage substitution
- Different workers’ compensation implications
Some companies intentionally choose this structure because they want:
- Simpler recruiting conversations
- Higher reported wages for drivers
- Less confusion during lending or mortgage applications
- A more traditional compensation structure
Others prefer the traditional trucking model because the tax savings are significant.
Neither structure is automatically right or wrong.
Why This Matters More Than Most Owners Realize
A lot of payroll companies explain per diem like there is only one acceptable method.
That leads trucking owners to believe:
- Per diem must reduce wages
- Drivers must “trade” taxable pay for per diem
- The reimbursement model is not allowed
That is not accurate.
The IRS cares far more about:
- Whether the driver qualifies
- Whether the plan is structured correctly
- Whether documentation exists
- Whether the payments are legitimate reimbursements
The IRS is not requiring trucking companies to use only a wage substitution model.
The issue is compliance and structure.
Why Some Trucking Companies Prefer Straight Reimbursement
Recruiting Simplicity
Drivers often compare gross pay between carriers.
When taxable wages are reduced through per diem substitution, some drivers:
- Think they are being underpaid
- Misunderstand their pay stubs
- Compare only taxable wages
- Get confused during financing or loan applications
Straight reimbursement avoids much of that confusion.
Mortgage and Lending Concerns
Some lenders only look at taxable wages.
Even though per diem increases net take-home pay, a driver may appear to earn less on paper if wages are reduced.
A reimbursement structure may help avoid those conversations.
Culture and Trust
Some owners simply prefer transparency.
They want:
- Wages to remain wages
- Reimbursements to remain reimbursements
- Less complexity in explaining payroll
That can be a legitimate operational choice.
Why Many Trucking Companies Still Choose Wage Substitution
The answer is simple:
Payroll tax savings.
For fleets with many drivers, the tax savings can become substantial over time.
That is why the wage substitution model became dominant in trucking payroll.
But owners should understand:
- It is a strategic choice
- Not the only legal structure available
Too many companies are making compensation decisions based on incomplete information from providers who only know one approach.
The Important Warning
Just because straight reimbursement is possible does not mean you can casually add non-taxable money to payroll.
Per diem compliance still matters.
The company still needs:
- A compliant plan
- Proper qualification standards
- Correct payroll treatment
- Proper documentation
- Consistent administration
Bad per diem administration can still create:
- Payroll tax exposure
- Audit problems
- Workers’ compensation disputes
- Insurance audit confusion
- Driver disputes
This is why payroll for trucking companies is more specialized than most people realize.
General payroll providers often do not understand:
- DOT travel rules
- Overnight qualification standards
- Per diem documentation requirements
- Trucking compensation structures
- Insurance audit implications
What Trucking Owners Should Actually Ask
Instead of asking:
“What is the per diem rate?”
The better question is:
“What compensation structure makes the most sense for our company?”
Because the right answer depends on:
- Recruiting strategy
- Driver demographics
- Workers’ compensation goals
- Administrative complexity
- Tax strategy
- Driver communication preferences
The mistake is assuming there is only one acceptable model.
There is not.
Final Thoughts
Per diem in trucking is widely misunderstood because the industry tends to present one common structure as the only structure.
A trucking company can legally:
- Use wage substitution per diem
- Use straight reimbursement per diem
- Or decide per diem is not right for their operation at all
The important thing is understanding the tradeoffs and administering the plan correctly.
The companies that get into trouble are usually not the ones asking thoughtful questions about structure.
They are the ones copying what another carrier does without understanding how it actually works.
FAQs
Yes. A trucking company can pay per diem as a separate reimbursement instead of reducing taxable wages. This is less common in trucking but is still a legitimate structure when administered correctly.
Most fleets use wage substitution because it reduces payroll taxes for both the driver and the employer. That tax savings is the primary reason the structure became standard in trucking payroll.
Yes, when structured properly. The key is that the payments must qualify as legitimate per diem reimbursements under applicable IRS rules and be administered consistently.
That depends on the driver population and recruiting strategy. Some companies prefer straight reimbursement because drivers see higher taxable wages and cleaner pay reporting. Others prioritize maximizing take-home pay through wage substitution.
The most important thing is being clear and consistent with drivers so they understand exactly how the pay structure works, what their paycheck will look like, and what to expect from their taxable wages and take-home pay. Confusion around pay creates more recruiting and retention problems than the actual structure itself.
Many payroll providers only understand the most common trucking structure and assume it is the only compliant option. Specialized payroll for trucking companies often requires a deeper understanding of DOT travel rules, reimbursement plans, insurance audits, and trucking compensation models.
Yes. Per diem treatment can affect workers’ compensation payroll calculations depending on the state, policy language, and how the compensation is structured. In many situations, properly structured per diem can lower workers’ compensation premium exposure because part of the driver compensation may be treated differently than taxable wages.
This is one reason trucking companies should coordinate payroll structure decisions carefully and make sure their payroll provider, insurance agent, and advisors all understand how the plan is being administered.
Absolutely. Per diem affects payroll taxes, workers’ compensation, recruiting, driver communication, and compliance. Trucking companies should work with professionals who specifically understand trucking payroll before making major compensation changes.
Written by
Mike Ritzema
Mike Ritzema founded Superior Trucking Payroll Service after years as a trucking CFO — so he knows the industry from the inside out. He writes about payroll, per diem, and driver pay with one goal: making life easier for trucking families. When he’s not solving payroll problems, you’ll find him crossing another MLB stadium off his bucket list.