Trucking Glossary
Quick definitions for common terms used in trucking cost analysis, factoring, compliance, and financing. Each term links to the relevant calculator where applicable.
- Cost Per Mile
- The total operating cost divided by the number of miles driven in a given period. It includes both fixed costs (insurance, truck payment) and variable costs (fuel, maintenance). Knowing your cost per mile is essential for setting profitable rates.
- → Cost Per Mile Calculator
- Deadhead Miles
- Miles driven without a paying load — typically when repositioning to pick up the next freight. Deadhead miles still consume fuel and time but generate no revenue, directly reducing your net profit.
- → Deadhead Cost Calculator
- Loaded Miles
- Miles driven with freight on board that is generating revenue. Revenue per loaded mile is a key metric for evaluating whether a load is worth accepting.
- → Load Profit Calculator
- Revenue Per Mile
- Total pay for a load or period divided by the number of miles driven. Often calculated separately as revenue per loaded mile and revenue per total mile (loaded + deadhead combined).
- → Load Profit Calculator
- Gross Revenue
- Total income before any expenses are deducted. For a trucking business, gross revenue includes base load pay, fuel surcharges, detention pay, and any accessorial charges. It does not reflect profitability — an operator grossing $20,000/month but spending $18,500 on expenses nets only $1,500.
- → Monthly Profit Calculator
- Accessorial Charges
- Additional fees beyond the base freight rate. Common examples include fuel surcharges, detention pay, lumper reimbursement, layover pay, and TONU (truck ordered not used). Accessorials can add meaningfully to a load's total pay — always factor them into your revenue per mile calculation, not just the base rate.
- → Load Profit Calculator
- Spot Rate
- The current market price for moving a load on the open spot market, as opposed to a contracted lane rate. Spot rates fluctuate with freight supply and demand — they run higher during peak seasons (produce, holiday retail) and lower during freight downturns. Most owner-operators use a mix of contracted lanes and spot loads depending on market conditions.
- → Load Profit Calculator
- Factoring Fee
- The fee charged by a freight factoring company to advance payment on your invoices. Typically expressed as a percentage of the invoice value (e.g., 2–5%). The factoring company collects from your broker or shipper and keeps the fee.
- → Factoring Fee Calculator
- Advance Rate
- The percentage of an invoice's value that a factoring company pays you upfront, usually within 24–48 hours of submitting the invoice. A 90% advance rate on a $2,000 invoice means you receive $1,800 immediately.
- → Factoring Fee Calculator
- Reserve
- The portion of the invoice held back by the factoring company until the shipper or broker pays. It equals 100% minus the advance rate. For example, a 90% advance rate means a 10% reserve. The reserve is typically released once the invoice is collected, minus the factoring fee.
- → Factoring Fee Calculator
- Recourse Factoring
- A freight factoring arrangement where the factoring company can charge unpaid invoices back to the carrier if a broker or shipper fails to pay. Most trucking factoring contracts are recourse — they cost less than non-recourse but put more payment risk on the carrier. Non-recourse factoring absorbs the credit risk for qualified payment failures, but typically comes with a higher rate.
- → Factoring Fee Calculator
- Fuel Surcharge
- An additional charge added to freight rates to compensate carriers for fluctuating diesel prices. Fuel surcharges are often calculated based on a published index (such as the DOE weekly retail diesel price) and are negotiated as part of the rate agreement.
- → Fuel Cost Calculator
- Fuel Card
- A payment card issued by a fuel card company (such as EFS, Comdata, or TCS) that provides discounts at participating truck stops. Most programs offer $0.05–$0.30 per gallon off retail depending on volume and the network. Some cards also provide cash advances and load board access, which can help manage cash flow between invoice payments.
- → Fuel Cost Calculator
- IFTA
- The International Fuel Tax Agreement (IFTA) is an agreement among U.S. states and Canadian provinces that simplifies fuel tax reporting for motor carriers operating in multiple jurisdictions. Instead of filing separately in each state, carriers file one quarterly return with their base state.
- → IFTA Fuel Tax Estimator
- Base Jurisdiction
- The U.S. state or Canadian province where an IFTA registrant files their quarterly fuel tax return. Base jurisdiction is determined by where the carrier is based — not where they drive most miles. Carriers must register with their base jurisdiction to receive IFTA credentials and are required to file quarterly even in quarters with zero miles driven.
- → IFTA Fuel Tax Estimator
- GVWR
- Gross Vehicle Weight Rating — the maximum operating weight of a vehicle as specified by the manufacturer, including the truck, fuel, driver, and cargo. GVWR is used to determine IFTA applicability (vehicles over 26,000 lbs GVWR that operate in two or more jurisdictions), registration fees, and bridge law compliance. Class 8 trucks typically have GVWRs above 33,000 lbs.
- → IFTA Fuel Tax Estimator
- Owner-Operator
- A commercial truck driver who owns and operates their own truck, either running independently or leased to a carrier. Owner-operators are responsible for all operating costs including fuel, insurance, maintenance, and compliance fees.
- → Monthly Profit Calculator
- Operating Authority
- Federal permission to operate as a for-hire motor carrier, issued by the FMCSA and identified by an MC number. Required to haul freight for compensation as an independent carrier. The process includes filing proof of insurance, registering a process agent under BOC-3, and paying the applicable fees. New authority carriers are subject to FMCSA safety monitoring for the first 18 months of operation.
- → Insurance Cost Estimator
- CSA Score
- Compliance, Safety, Accountability — a safety measurement system used by the FMCSA to identify carriers and drivers with safety violations. CSA scores are based on roadside inspection results, crash records, and out-of-service orders. High CSA scores can lead to higher insurance premiums, reduced broker access, and formal FMCSA intervention. Carriers can challenge inaccurate violations through the DataQs system.
- → Insurance Cost Estimator
- ELD
- Electronic Logging Device — a device that automatically records a driver's Hours of Service (HOS) data by connecting to the vehicle's engine. Required for most commercial drivers under an FMCSA mandate that took full effect in 2019. ELDs record driving time, on-duty time, and rest periods. Violations for failing to use a compliant ELD or manipulating records carry significant civil penalties.
- Fixed Costs
- Operating expenses that remain relatively constant regardless of how many miles you drive. Common examples include truck payments, insurance premiums, permits, and lease fees. Fixed costs must be covered even in low-revenue months.
- → Cost Per Mile Calculator
- Bobtail
- A semi-truck operated without a trailer attached. Bobtail driving typically happens when repositioning between loads or returning equipment to a terminal. Many primary liability policies do not cover a truck while bobtailing, which is why bobtail liability insurance exists as a separate coverage — and why some lease agreements require it.
- → Insurance Cost Estimator
- Variable Costs
- Operating expenses that change based on how many miles you drive. Fuel is the largest variable cost for most truckers. Other examples include tire wear, oil and maintenance, and driver pay per mile.
- → Fuel Cost Calculator
- Net Profit
- The amount left over after subtracting all operating expenses from gross revenue. Net profit is what you actually keep before personal income taxes. A healthy net margin for an owner-operator is typically 10–25% of gross revenue, though it varies widely.
- → Monthly Profit Calculator
- Per Diem
- A daily tax-deductible allowance for meals and incidentals while traveling away from home overnight. The IRS sets a special per diem rate for transportation workers — currently $80/day with 80% deductible. Owner-operators who qualify can deduct a significant amount annually without tracking every receipt. Work with a tax professional familiar with trucking to apply this correctly.
- → Monthly Profit Calculator
- Detention Pay
- Compensation paid to a driver for time spent waiting at a shipper or receiver beyond a standard free-time allowance, typically 2 hours. Rates generally run $25–$75 per hour. Brokers and shippers vary widely on whether they actually pay detention — verify the policy before accepting a load if wait times are common on that lane.
- → Load Profit Calculator
- Lumper Fee
- A fee paid to a third-party worker who unloads freight at a receiver's dock. Lumper fees typically run $75–$200 per stop and are usually paid out-of-pocket by the driver, then reimbursed by the broker or shipper — if negotiated upfront. Some brokers do not reimburse lumpers automatically. Always clarify the lumper policy before accepting a load where unloading assistance is expected.
- → Load Profit Calculator
- Operating Ratio
- Total operating expenses divided by gross revenue, expressed as a percentage. An operating ratio of 85% means $0.85 of every dollar earned goes to expenses, leaving a 15% profit margin. Lower is better — most carriers target below 90%.
- → Monthly Profit Calculator
- APR
- Annual Percentage Rate — the yearly cost of borrowing money, expressed as a percentage of the loan principal. APR includes the interest rate and may include certain fees, making it a more complete cost comparison than the stated interest rate alone.
- → Truck Loan Calculator
- Self-Employment Tax
- A federal tax on net self-employment income covering both the employer and employee portions of Social Security and Medicare — totaling 15.3% on the first $176,100 of net earnings (2025 threshold), then 2.9% above that. Owner-operators pay both sides since there's no employer splitting the cost. It's one of the biggest financial surprises for drivers moving from company driving, where only the employee half (7.65%) came out of your paycheck.
- → Monthly Profit Calculator
- Quarterly Estimated Taxes
- Prepayments of income and self-employment tax that self-employed individuals are required to make four times per year to the IRS. Due dates are generally April 15, June 15, September 15, and January 15. Owner-operators who expect to owe $1,000 or more in federal taxes must pay quarterly estimates or face underpayment penalties. A common rule of thumb: set aside 25–30% of net profit for combined federal and state taxes.
- → Monthly Profit Calculator
- Load Board
- An online marketplace where shippers and freight brokers post available loads for carriers to search and book. The two largest are DAT and Truckstop.com — both charge monthly subscription fees and provide rate data, lane analytics, and broker credit scores. Load boards are the primary source for spot market freight. Most owner-operators use a combination of load boards and contracted lanes to keep the truck moving.
- Rate Confirmation
- A written agreement between a carrier and broker (or shipper) that documents the terms of a load: origin, destination, pickup and delivery dates, rate, and payment terms. The rate con is the contract — if it says $2,100 all-in and the broker tries to deduct a lumper fee later, your recourse starts with what's written. Never move a load without a signed rate confirmation.
- → Load Profit Calculator
- Freight Broker
- A licensed intermediary who arranges transportation between shippers and carriers. Brokers don't own trucks — they match available freight with available capacity and earn a margin on the spread between what the shipper pays and what the carrier receives. Brokers must hold a FMCSA freight broker license and post a $75,000 BMC-84 surety bond. Carrier credit scores (through DAT, Ansonia, or similar) can tell you whether a broker pays on time before you haul their load.
- TONU
- Truck Ordered Not Used — compensation paid to a carrier when a broker or shipper cancels a load after a truck has been dispatched or is already waiting at the facility. TONU rates typically run $100–$400 depending on how far the truck traveled and what was negotiated. It's an accessorial charge and is not guaranteed unless it's written into the rate confirmation before you accept the load.
- → Load Profit Calculator
- Hours of Service
- FMCSA regulations that limit how long a commercial driver can operate before mandatory rest. Key limits for property-carrying drivers: 11 hours of driving after 10 consecutive off-duty hours; 14-hour on-duty window; 30-minute break after 8 hours of driving; 70-hour on-duty limit in any 8 consecutive days. HOS violations result in out-of-service orders, fines, and CSA score points. ELDs automatically track compliance.
- DOT Number
- A unique identifier assigned by the USDOT for safety monitoring and compliance tracking of commercial vehicles. Required for interstate carriers operating above certain weight thresholds. The DOT number links to your safety rating, inspection history, and crash records in the FMCSA's SAFER system. A DOT number alone doesn't authorize for-hire freight — that requires a separate MC number and operating authority.
- MC Number
- Motor Carrier number — the identifier assigned by FMCSA when a carrier obtains operating authority to haul for-hire freight in interstate commerce. Required on all bill of lading paperwork and carrier documents for regulated freight. An MC number indicates a carrier has registered for for-hire authority, not that they have a satisfactory safety record — those are tracked separately under the DOT number.
- Primary Liability Insurance
- The base required trucking coverage protecting against third-party bodily injury and property damage claims from at-fault accidents. FMCSA minimums are $750,000 for most dry van freight and $1,000,000 for hazmat. Most brokers require $1,000,000 regardless of cargo type. This is typically the single largest insurance premium line item for an owner-operator.
- → Insurance Cost Estimator
- Cargo Insurance
- Coverage for loss or damage to the freight being transported. Most brokers require $100,000 in cargo coverage; high-value loads often require more. Standard cargo policies exclude temperature-controlled freight failures, contraband, and certain high-theft commodities unless specifically endorsed. Review the exclusion list carefully if you're hauling electronics, pharmaceuticals, or produce.
- → Insurance Cost Estimator
- Non-Trucking Liability
- Insurance covering a leased owner-operator when the truck is being used for personal, non-business purposes — while not under dispatch and not hauling a trailer. NTL is often required by the motor carrier you're leased to, since their insurance typically only covers you while under their authority. Often called bobtail insurance when it applies specifically to driving without a trailer attached.
- → Insurance Cost Estimator
- Occupational Accident Insurance
- A coverage product designed as an alternative to workers' compensation for independent owner-operators who don't qualify for employer-provided workers' comp. OA policies cover medical expenses and disability income for work-related injuries. Premiums are typically lower than workers' comp, but coverage limits, benefit periods, and exclusions vary significantly — review what's actually covered before buying based on price alone.
- → Insurance Cost Estimator
- Reefer Unit
- A refrigeration system mounted on the nose of a trailer that maintains temperature-controlled cargo within a specified range. Reefer units have their own diesel engine and separate fuel tank — fuel consumption is completely independent of the truck engine. Common brands include Thermo King and Carrier Transicold. Typical consumption runs 0.4–0.8 gal/hr depending on unit age, ambient temperature, and set point. Reefer fuel is a significant cost on refrigerated loads that's frequently missed when calculating load profitability.
- → Reefer Fuel Cost Calculator
- Drop and Hook
- A load type where a driver drops a loaded trailer at a facility and immediately picks up a pre-staged trailer without waiting for loading or unloading. Drop and hook eliminates dock waiting time, which on live loads can run 1–4 hours. Less time at the dock means more miles per day — a load paying $0.10 less per mile than a live load but saving 3 hours at the dock is often the better financial choice.
- → Load Profit Calculator
- All-Miles Rate
- Total load revenue divided by total miles — loaded and deadhead combined. A load paying $2.20/mile on 500 loaded miles but requiring 200 deadhead miles generates $1.57 per all-miles. This is a more complete profitability measure than loaded rate per mile because it accounts for the full cost of repositioning. Two loads with different per-mile rates can produce nearly identical all-miles revenue depending on how much deadhead each requires.
- → Load Profit Calculator
- Freight Lane
- A regular route or corridor between two geographic points that a carrier operates repeatedly. Contract lanes offer predictable freight at negotiated rates — usually below spot market when capacity is tight, but far more reliable during freight downturns when spot rates collapse. Building a network of consistent lanes reduces load board dependence and smooths out monthly revenue volatility.
- Fuel Efficiency
- Miles driven per gallon of diesel consumed. For a loaded Class 8 truck, typical fuel efficiency runs 5.5–7.5 MPG depending on load weight, terrain, speed, and truck spec. Aerodynamic drag increases significantly above 62 mph — going from 65 to 75 mph can cut MPG by 15–20% and add $50–$150 in fuel cost on a single run. It's the biggest operating cost lever an owner-operator controls directly.
- → Fuel Cost Calculator
- Amortization
- The process of paying off a loan through regular equal payments over a set term, with each payment covering both interest and principal. Early in the loan, most of each payment is interest; as the balance decreases, more goes to principal. The full amortization schedule shows exactly how much total interest you pay — which is why comparing a 48-month and a 72-month loan requires looking at total cost, not just the monthly payment.
- → Truck Loan Calculator
- Down Payment
- The upfront cash paid at vehicle purchase that reduces the financed amount. A larger down payment means a smaller loan, lower monthly payment, and less total interest — but it also draws down your cash reserves. Commercial truck lenders typically want 10–20% down from established carriers with solid credit. New authority carriers or those with lower credit scores may be required to put down 20–30% or more.
- → Truck Loan Calculator
- Back Haul
- A load picked up on the return leg of a trip after delivering the primary freight. A well-planned back haul converts what would have been deadhead miles into revenue. The rate per mile is often below average because both the driver and broker know the alternative is running empty — but even a below-average rate on back haul miles almost always beats the all-in cost of deadhead.
- → Deadhead Cost Calculator