Running your own truck at Port Miami means you're self-employed — and the IRS treats self-employed truckers differently than company drivers. You pay both sides of Social Security and Medicare (the 15.3% self-employment tax), but you also get to deduct nearly every cost of running your operation. Tracking those deductions is the difference between a $12,000 tax bill and a $4,000 one.
Truck and Equipment Deductions
Your truck is your largest asset — and your largest deduction. The IRS gives you two main ways to write it off.
Equipment beyond the truck also qualifies: chassis, reefer units, straps, tarps, load bars, GPS units, dash cams, and tools. Anything used exclusively for the business can be expensed or depreciated.
Repairs and maintenance on the truck are 100% deductible — tires, engine work, brake jobs, oil changes, trailer inspections. Keep all shop receipts. A $4,000 engine rebuild in July reduces your taxable income by $4,000.
Fuel and Operating Costs
Fuel is the biggest recurring deduction for most drayage drivers. Every gallon you buy for the truck — diesel, DEF fluid, reefer fuel — is deductible. This is where a fuel card earns its keep twice: it saves you money at the pump and generates clean records for tax time.
- Diesel and DEF: Full cost deductible. Fuel card statements work as documentation.
- Truck washes: Fully deductible. Port Miami has strict cleanliness requirements for some terminals — those washes are business expenses.
- Parking and tolls: Port fees, SunPass charges, parking near terminals, weigh station fees — all deductible. The SunPass statement at year-end is your documentation.
- Bobtail moves: The fuel burned on empty repositioning runs counts the same as loaded moves for deduction purposes. You're operating the truck for business either way.
- Port fees paid out of pocket: If you pay chassis fees, port gate charges, or hazmat fees directly, those are deductible operating costs.
One expense Miami drayage drivers sometimes miss: the cost of deadhead miles returning from a Port Everglades delivery back to Port Miami, or running to a chassis depot. Those empty miles still burn fuel, and that fuel is deductible.
Per Diem and Meals
Per diem is one of the most debated deductions in trucking. For drayage drivers who work locally — hauling containers between Port Miami, Port Everglades, and Miami-area warehouses — the rules are different than for long-haul drivers who sleep away from home regularly.
The IRS per diem deduction for meals applies when you're away from your tax home overnight. For most Miami drayage drivers making same-day runs and returning home each night, the standard per diem doesn't apply. You can still deduct actual meal expenses incurred during work, but at 50% of the cost, and you need receipts.
If you occasionally do overnight runs — say, a load going to Jacksonville or a run to Tampa — those nights away from home qualify for per diem. The IRS rate for the continental US is $80/day for 2026. You can deduct 80% of that ($64/day) as a meal expense without needing individual receipts.
Insurance and Licenses
Every dollar you spend keeping your operating authority and insurance current is deductible.
- Bobtail insurance: The coverage that protects you when operating without a trailer. Deductible in full.
- Occupational accident insurance: Common for owner-operators who don't qualify for workers' comp. Fully deductible.
- Physical damage insurance: Coverage on your own truck. Deductible.
- TWIC card renewal: The $125.25 renewal fee is a business license expense — deductible.
- CDL renewal and endorsements: The cost of renewing your CDL, adding a hazmat endorsement, or getting a tanker endorsement is deductible as a professional license expense.
- DOT medical exam: Required to maintain your CDL — deductible as a business expense.
- Drug testing (DOT): Consortium fees and individual test costs are deductible.
- Florida Commercial Vehicle Registration: Annual registration fees for your truck and trailer.
- UCR (Unified Carrier Registration): Annual fee required to operate in interstate commerce.
- IFTA license: If you cross state lines, the IFTA license fee and decal cost are deductible.
Home Office and Phone
If you manage your dispatch, bookkeeping, and paperwork from home — which most one-truck owner-operators do — the home office deduction applies. The IRS requires the space be used regularly and exclusively for business.
Two methods: the simplified method ($5 per square foot, up to 300 sq ft = max $1,500/year) or the actual cost method (calculate the percentage of your home used for business and apply that percentage to rent, utilities, and insurance). The actual cost method yields more for most people but requires better documentation.
Your cell phone is deductible at the percentage you use it for business. For most owner-operators who use the phone for dispatch calls, port status checks, TMS apps, and customer communication, 80–90% business use is reasonable and defensible. Keep call logs or a usage note in your records.
Self-Employment Tax Deduction
This one catches new owner-operators off guard. You pay 15.3% self-employment tax on net earnings — both the employer and employee halves of FICA. That's a significant hit. The IRS lets you deduct half of that self-employment tax from your gross income when calculating your adjusted gross income. It doesn't reduce your self-employment tax directly, but it lowers the income that gets taxed at your regular rate.
On $80,000 in net self-employment income, the SE tax is about $11,300. Half of that — roughly $5,650 — comes off your adjusted gross income before you calculate regular income tax. It's not huge, but it's not nothing either.
Also worth noting: self-employed individuals can deduct 100% of health insurance premiums paid for themselves and their family members, as long as you're not eligible for employer-sponsored coverage through a spouse. This goes on Schedule 1, not Schedule C, but it's money back in your pocket the same way.
Record-Keeping the IRS Wants
Deductions without documentation aren't deductions — they're guesses. The IRS requires contemporaneous records, meaning you tracked the expense when it happened, not when you filed your taxes.
- Mileage log: Date, starting point, destination, purpose, odometer start and end. Apps like Truckin GPS or even a notebook in the cab work. Required if you're using actual vehicle expenses (which is almost always better than the standard mileage rate for commercial trucks).
- Fuel receipts or card statements: Monthly fuel card statements are sufficient. Keep them for three years minimum.
- Repair receipts: Every shop ticket, every parts receipt. Date, amount, what was repaired.
- Insurance declarations pages: Annual policy documents showing premium amounts and coverage periods.
- Settlement sheets: If you're leased to a carrier, the weekly settlement shows gross pay, fuel advances, insurance deductions, and other withholdings. These are your income records.
- 1099-NEC forms: Any shipper or broker that paid you more than $600 in a calendar year should issue a 1099. Not all do — your settlement sheets are the backup.
Three years is the standard IRS audit window. Six years if the IRS suspects you underreported income by more than 25%. Seven years for certain fraud-related issues. Most tax advisors recommend keeping trucking records for six years.
What Triggers a Trucking Audit
The IRS knows trucking industry averages. When your numbers fall far outside those norms, their software flags the return.
The best audit defense is a box of well-organized receipts and a clean mileage log. Auditors aren't looking to maximize your refund — but they're also not looking to destroy compliant businesses. If your records match your deductions, audits end quickly.
One final note: hire a CPA or enrolled agent who specializes in trucking and transportation. A general tax preparer often misses deductions that a trucking-focused accountant knows by heart — the Section 179 timing strategy, the correct per diem treatment for your work pattern, state-level deductions Florida offers. The fee for a good trucking CPA runs $400–$800 per year. Most owner-operators save three to five times that in taxes by using one.