Fuel Tax Trends in 2026: IFTA, Diesel Taxes & Trucking Compliance

Fuel tax compliance is becoming more complicated for trucking companies in 2026.

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Key Takeaways for Trucking Companies

• Fuel tax compliance is changing in 2026 because of state tax reductions, temporary fuel tax suspensions, and fluctuating diesel costs.
• IFTA reporting still requires accurate mileage, fuel purchase, and jurisdiction records, even when a state temporarily reduces or suspends fuel taxes.
• The federal diesel fuel tax remains 24.4 cents per gallon, including the Leaking Underground Storage Tank tax.
• IFTA tax rates can change by quarter, so carriers must use current jurisdiction rates when filing.
• Poor fuel tax records can lead to penalties, interest, audit findings, and possible IFTA credential issues.
• CNS helps trucking companies manage IFTA filings, fuel tax reporting, recordkeeping, and audit preparation.

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As diesel prices continue to fluctuate and lawmakers debate fuel tax relief measures, trucking companies across the country are paying closer attention to fuel tax compliance and International Fuel Tax Agreement (IFTA) reporting.

For owner-operators, small fleets, and growing trucking companies, fuel tax is not just an accounting issue. It directly affects compliance, cash flow, audit risk, and operating costs.

Here is what carriers need to know about fuel tax trends in 2026 and how to stay compliant.

What Is IFTA Fuel Tax Reporting?

IFTA fuel tax reporting is the quarterly process motor carriers use to report fuel purchased and miles traveled across participating U.S. states and Canadian provinces.

Instead of filing separate fuel tax returns in every jurisdiction, an IFTA-licensed carrier files one quarterly return through its base jurisdiction. That return reconciles fuel taxes based on where the carrier traveled, where fuel was purchased, and the applicable tax rates for each jurisdiction.

What Is Fuel Tax and Why Does It Matter to Trucking Companies?

Fuel taxes are taxes imposed on diesel and gasoline purchases at the federal and state levels. For trucking companies operating across multiple states, these taxes are reconciled through the International Fuel Tax Agreement (IFTA), which simplifies fuel tax reporting between participating jurisdictions.

Instead of filing separate fuel tax reports in every state, carriers file one quarterly IFTA return through their base jurisdiction.

However, that does not mean fuel tax compliance is simple.

Fuel tax obligations depend on:

• Miles traveled in each state
• Fuel purchased in each jurisdiction
• Quarterly fuel tax rates
• Temporary exemptions or tax suspensions
• Accurate mileage and fuel records
• Timely quarterly filing

As fuel tax policies continue changing, accurate reporting is becoming more important than ever.

What Records Are Needed for IFTA Reporting?

Carriers need mileage records, fuel receipts, trip reports, vehicle information, jurisdiction miles, fuel card data, and quarterly tax filings for IFTA reporting.

The most important records are accurate miles traveled in each jurisdiction and fuel purchased in each jurisdiction. These records help determine whether the carrier owes additional fuel tax or receives a credit.

Trend #1: States Are Temporarily Reducing Fuel Taxes

Several states have explored fuel tax relief measures in response to rising fuel prices and inflation pressures.

Kentucky recently reduced state fuel taxes by 10 cents per gallon while freezing an anticipated tax increase. The diesel tax reduction lowered Kentucky’s diesel fuel tax to 12 cents per gallon.

Georgia also previously suspended its state fuel tax temporarily to help motorists and trucking companies offset rising diesel costs. During the suspension period, Georgia issued guidance stating that IFTA-licensed motor carriers operating in the state were exempt from the motor fuel excise tax.

While these temporary reductions may provide short-term relief, they also create additional compliance complexity for fleets operating across state lines.

Why This Matters for IFTA Reporting

When states temporarily reduce or suspend fuel taxes, carriers still need to:

• Track fuel purchases accurately
• Document miles traveled in each jurisdiction
• Apply correct tax rates during filing periods
• Maintain proper records for audits

Even a temporary fuel tax exemption can affect quarterly IFTA calculations.

Trend #2: Federal Diesel Tax Suspension Proposals Are Gaining Attention

Federal lawmakers have also discussed suspending federal fuel taxes as diesel prices remain elevated.

Currently, the federal diesel tax is 24.4 cents per gallon, while gasoline is taxed at 18.4 cents per gallon federally. (FHWA)

Supporters argue that suspending the federal fuel tax could lower costs for consumers and trucking companies. However, trucking industry groups have expressed concerns about the long-term impact.

According to the trucking associations cited in the source material, suspending federal fuel taxes without replacement funding could significantly reduce Highway Trust Fund revenue used for infrastructure projects and highway maintenance.

The concern is especially important for the trucking industry because commercial vehicles rely heavily on safe roads, bridges, and interstate infrastructure.

Trend #3: Fuel Tax Compliance Is Becoming More Complicated

Fuel tax rates can change quarterly, and every jurisdiction has different reporting requirements.

IFTA regularly updates jurisdiction tax rates, making it essential for carriers to use current data during quarterly reporting. (IFTA, Inc.)

For trucking companies operating in multiple states, this creates several compliance challenges:

Common Fuel Tax Compliance Issues

• Missing or incomplete fuel receipts
• Incorrect mileage reporting
• Misapplied state tax rates
• Unreported jurisdiction travel
• Late IFTA filings
• Poor recordkeeping during audits

Even small reporting errors can result in:

• Penalties
• Interest charges
• Audit findings
• Suspended IFTA credentials
• Increased administrative costs

Trend #4: Diesel Prices Continue to Impact Carrier Profitability

Diesel fuel remains one of the largest operating expenses for trucking companies.

According to the U.S. Energy Information Administration (EIA), diesel prices are influenced by several factors, including:

• Crude oil prices
• Refining costs
• Distribution and marketing
• Federal and state taxes
• Global supply disruptions

As diesel prices rise, accurate fuel tax management becomes even more important because every gallon purchased affects quarterly IFTA calculations and operational costs.

For many fleets, inefficient fuel tax reporting processes can quietly increase overhead and create avoidable financial exposure.

Trend #5: Accurate Recordkeeping Is Critical for IFTA Audits

With changing fuel tax policies and increased enforcement attention, carriers should expect continued scrutiny around IFTA reporting accuracy.

To stay compliant, trucking companies should maintain organized records for:

• Fuel receipts
• Trip reports
• Mileage by jurisdiction
• Vehicle identification numbers
• Fuel card reports
• Quarterly tax filings
• Driver logs
• Supporting documentation

Strong recordkeeping not only helps reduce audit risk but also improves operational visibility and reporting accuracy.

Common IFTA Compliance Problems

Compliance Problem	Why It Matters
Missing fuel receipts	Fuel purchases may be disallowed during an audit
Incorrect jurisdiction miles	Tax may be calculated incorrectly
Outdated tax rates	Returns may underreport or overreport tax
Late quarterly filings	Penalties and interest may apply
Poor trip documentation	Mileage totals may not be defensible
Unreported states	Jurisdiction tax obligations may be missed
No process for tax changes	Temporary reductions or suspensions may be mishandled

What Should Trucking Companies Do in 2026?

Carriers should take a proactive approach to fuel tax compliance in 2026.

1. Review Your IFTA Filing Process

Make sure your team knows who is responsible for collecting records, reviewing mileage, applying tax rates, and filing returns.

2. Use Current Quarterly Tax Rates

Do not reuse old rates. IFTA rates can change each quarter, and temporary state actions can affect specific reporting periods.

3. Keep Fuel Receipts Organized

Fuel receipts should clearly show the date, seller, location, gallons purchased, fuel type, vehicle, and payment details.

4. Reconcile Mileage and Fuel Data

Compare ELD, GPS, dispatch, fuel card, and trip report data before filing.

5. Watch for State-Level Fuel Tax Changes

Temporary reductions or suspensions can affect how fuel purchases and miles are reported.

6. Prepare for Audits Before They Happen

Keep records organized throughout the year instead of trying to reconstruct them after receiving an audit notice.

How CNS Helps Trucking Companies Manage Fuel Tax Compliance

Fuel tax reporting can quickly become overwhelming for trucking companies operating across multiple jurisdictions.

Between changing tax rates, quarterly filing deadlines, IFTA requirements, and audit preparation, many fleets struggle to keep up with the administrative workload.

That is where CNS can help.

CNS provides fuel tax and IFTA support designed to help trucking companies:

• Simplify quarterly fuel tax reporting
• Maintain accurate jurisdiction records
• Reduce filing errors
• Stay compliant with IFTA requirements
• Prepare for audits
• Save time on administrative tasks

Whether you are an owner-operator, small fleet, or growing carrier, our team can help you stay ahead of changing fuel tax regulations while reducing compliance headaches.

If your company needs support managing IFTA filings, fuel tax reporting, or compliance documentation, CNS is here to help.

Contact CNS today to learn more about our Fuel Tax Services and how we can help your fleet stay compliant, organized, and audit-ready.