Fuel Card vs Mileage

If you’re an owner-operator or small fleet owner, you’ve likely wondered whether to use a fuel card or track mileage for fuel expenses. The short answer: fuel cards are almost always the better choice for business use, because they offer discounts, control, and tax documentation. Mileage tracking is useful for personal vehicles or as a backup, but it doesn’t give you the same financial benefits. This guide breaks down the differences, costs, and how to decide.

What Is a Fuel Card?

A fuel card is a payment card specifically for fuel and truck-related expenses. Major providers like Fleet One, Comdata, and WEX issue cards that work at truck stops and fuel stations. You get a discount per gallon, typically $0.10 to $0.50 off the cash price, depending on the network and volume. Many cards also offer features like fuel price management, IFTA reporting, and expense tracking.

What Is Mileage Tracking?

Mileage tracking means recording every mile you drive and calculating fuel cost based on your vehicle’s miles per gallon (MPG) and current fuel prices. You can do this manually with a logbook or use apps like TruckLogics or Everlance. For tax purposes, the IRS standard mileage rate (for 2026, it’s projected to be around $0.70 per mile, but check the IRS website) can be used to deduct vehicle expenses. However, for a commercial truck, the actual expense method (fuel, maintenance, etc.) is usually more accurate.

Key Differences: Costs, Benefits, and Drawbacks

Fuel Card Benefits

• Discounts: Save $0.10 to $0.50 per gallon. If you use 20,000 gallons a year, that’s $2,000 to $10,000 in savings.
• Control: Set spending limits, restrict purchases to fuel only, and monitor driver activity.
• Simplified Accounting: Get itemized statements that make IFTA and tax reporting easier.
• Cash Flow: Some cards offer fuel advances or factoring, but watch for fees.

Fuel Card Drawbacks

• Fees: Some cards have monthly fees ($5 to $15) or transaction fees (up to $0.50 per transaction).
• Network Restrictions: You may be limited to certain truck stops, which can be inconvenient.
• Interest Charges: If you carry a balance, interest rates can be high (15% to 25% APR).

Mileage Tracking Benefits

• No Fees: It’s free if you use a simple logbook or a low-cost app.
• Flexibility: You can buy fuel anywhere, not just at network stations.
• Tax Deduction: The IRS mileage rate can be used for business miles, but for heavy trucks, actual expenses often yield a bigger deduction.

Mileage Tracking Drawbacks

• Time-Consuming: You must log every mile and calculate costs manually.
• Inaccurate: MPG varies with load, terrain, and idling, so your fuel cost estimate can be off.
• No Discounts: You pay full price for fuel.

Comparison Table: Fuel Card vs Mileage Options

Here’s a quick comparison of typical options for owner-operators in 2026. Prices are ranges based on current market data.

Option	Cost	Fuel Discount	Best For
Fleet One Fuel Card	$0 monthly fee (with volume)	$0.10-$0.30/gal	Owner-operators with steady routes
Comdata Fuel Card	$5-$10 monthly fee	$0.15-$0.40/gal	Fleets needing advanced controls
WEX Fuel Card	$0-$15 monthly fee	$0.10-$0.50/gal	Small fleets with mixed needs
Manual Mileage Log	Free (logbook)	None	Personal use or backup
Mileage App (e.g., Everlance)	$8-$20/month	None	Independent drivers who want tracking
IRS Mileage Rate (for tax)	N/A (rate per mile)	N/A	Tax deduction for business miles

How to Choose: Practical Steps

1. Calculate Your Annual Fuel Usage: Look at your last 12 months of fuel receipts. How many gallons did you buy? Multiply by the average discount you could get with a fuel card (e.g., $0.25). That’s your potential savings.

2. Compare Fees: Add up any monthly fees and transaction fees for the fuel card. Subtract that from your savings. If the net is positive, a fuel card makes sense.

3. Check Network Coverage: Look at the card’s truck stop network. Do they cover the routes you run? If you often fuel at small independent stations, a network card might not work.

4. Evaluate Features: Do you need IFTA reporting? Fuel price management? Driver controls? Choose a card that offers the features you’ll actually use.

5. Test with a Small Fleet: If you have multiple trucks, try one card on one truck for a month. Track your savings and see if it’s worth switching.

6. For Mileage Tracking: If you decide to track mileage, use an app that records GPS automatically. That saves time and improves accuracy. But remember, you won’t get discounts.

FAQ

Can I use a fuel card for personal expenses?

No. Fuel cards are for business use only. Using them for personal purchases can violate the card agreement and create tax problems. Some cards allow cash advances, but they come with high fees.

Is mileage tracking more accurate than a fuel card for tax deductions?

For commercial trucks, the actual expense method (fuel, maintenance, etc.) is usually more accurate and gives a bigger deduction. The IRS mileage rate is simpler but often lower for heavy trucks. A fuel card provides exact fuel costs, which helps with actual expense reporting.

Are there fuel cards with no monthly fees?

Yes, some cards like Fleet One have no monthly fee if you meet a minimum volume (e.g., 1,000 gallons per month). Others charge $5 to $15. Always read the fee schedule before signing up.

Can I use a fuel card for IFTA reporting?

Yes, most fuel cards provide detailed reports that break down fuel purchases by state, which is exactly what you need for IFTA. This saves hours of paperwork.

The Bottom Line

For most owner-operators and small fleets, a fuel card is the better choice. The discounts alone can save you thousands of dollars a year, and the reporting features simplify your bookkeeping. Mileage tracking is fine for personal vehicles or as a backup, but it doesn’t offer the same financial benefits. Start by calculating your potential savings, compare a few cards, and test one on a single truck. That way, you’ll see the real numbers before you commit.