Asset Briefs

Fuel market volatility affects tax teams

By Freya Mitchell July 27, 2026
Fuel market volatility affects tax teams - fuel market
Fuel market volatility affects tax teams

Tax teams responsible for motor fuel excise compliance face pressure from volatile fuel markets and a loss of institutional knowledge as veteran tax professionals retire. This combination of factors can scramble filings, even when rates haven’t changed.

Challenges in Motor Fuel Excise Compliance

Volatility in fuel markets affects buying behaviors, with operators drawing down storage or topping off tanks when prices dip. This behavioral shift drives changes in gallons, refunds, and payments, making it essential for tax leaders to have standardized filing processes.

A large filing variance may be legitimate, but if not documented, it becomes difficult to explain during an audit. Tax professionals often act as translators, extracting data from multiple systems and reformatting it manually to align with jurisdiction-specific filing requirements.

Automation and Continuous Validation

Automation can provide meaningful value by continuously validating transaction-level data, helping identify anomalies and making variances easier to explain. Software that checks transaction-level data continuously can flag the cause of a swing while it’s still fresh, rather than a year later.

Gas tax holidays add another layer of complexity when filing returns, with retailers holding fuel that was already taxed before the suspension kicked in. Timing can make it worse, with a suspension starting or ending mid-month forcing one filing period to reflect two tax treatments.

The biggest challenge is missing the day a suspension actually expires, resulting in underpayments and wasted time and money on amendments and tax penalties. Giving a tax holiday’s expiration date the same attention as a permanent rate change’s effective date is essential.

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CPI-Linked Rates and Institutional Knowledge

A few states peg their motor fuel tax rate to the Consumer Price Index or average retail prices, with small rate adjustments seeming insignificant until applied across millions of taxable gallons. These indexed rates can be updated with a delay, making it essential to check the state’s published rate schedule before every filing.

The loss of institutional knowledge due to veteran tax professionals retiring threatens compliance, with few accounting programs devoting attention to motor fuel excise tax. Succession planning must be deliberate, with documented processes and intentional systems to preserve knowledge.

They emphasize the importance of standardized processes, documentation, and technology in maintaining compliance and responding to audits efficiently. Partnering new hires with veterans on live work and shifting institutional knowledge from individuals to documented workflows and technology can help maintain compliance.

Tax professionals like Bob Donnellan and Kelly Grace have extensive experience in motor fuel tax compliance and have advised companies on complex state and federal motor fuel tax issues.

In practice, this means that organizations must have the right systems in place to maintain compliance and avoid penalties. Understanding the regulations and having standardized processes is essential for tax teams to handle the challenges of motor fuel excise compliance.

The fuel tax system is complex, with various states having different tax rates and regulations. Organizations need to understand these regulations and have systems in place to maintain compliance. For more information on tax compliance, see the importance of strategic planning in maintaining institutional knowledge.

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