Build one monthly operating-cost estimate
Monthly Trucking Expense combines recurring fixed expenses with a mileage-based variable allowance. It answers how much the modeled month costs at the mileage level entered.
The variable CPM must be deliberately defined. If it represents fuel, maintenance, tires and other mileage costs, include each once. If it represents only maintenance, the result is not a complete monthly operating expense.
When this calculation is useful
- Turning a per-mile variable plan into a monthly dollar budget.
- Testing how monthly mileage changes total expense.
- Preparing a cost input for monthly revenue planning.
Add fixed overhead to mileage-driven cost
- Fixed expenses
- Monthly expenses that do not change directly with miles in this model.
- Monthly miles
- Expected total business miles for the modeled month.
- Variable CPM
- Combined variable expense incurred for each mile, based on the categories the user chooses to include.
Formula
Monthly fixed expenses + (monthly miles × variable cost per mile)
Multiplying miles by variable CPM converts the per-mile assumption into monthly dollars. Fixed expense is then added once. The result does not separately gross up for dispatch or factoring fees.
Example: a $12,210 operating month
Assume $4,800 fixed expense, 9,500 miles and $0.78 variable CPM.
- 9,500 × $0.78 = $7,410 variable expense.
- $4,800 + $7,410 = $12,210.
Result: Estimated monthly trucking expense is $12,210.
Decision use: Use the result as a cost input for monthly revenue requirements, then add owner pay and business profit goals separately.
Mileage changes both activity and cost
Higher mileage increases modeled variable dollars, but lower mileage can make fixed cost per mile worse. Review monthly totals and CPM together rather than minimizing one in isolation.
Common mistakes
- Adding equipment payments to both fixed expense and variable CPM.
- Using loaded miles instead of total operating miles.
- Assuming every repair occurs smoothly at the reserve CPM.
Limits and assumptions
- The tool does not itemize expense categories or distinguish cash expense from non-cash reserve allocation.
- Revenue fees, owner pay, taxes and desired profit are excluded.
Review the broader calculation and sourcing principles on the Torz Freight methodology page.
Related calculators and guides
Torz Freight connects My Truck assumptions to Load Desk, Load Compare, negotiation, Trip Desk actuals and Money Desk. A quick calculation is most useful when its assumptions are checked against completed work.