Tax Planning
Maximizing Fuel Refunds Under the One, Big, Beautiful Bill: A Guide to § 6435 Claims
New law gives taxpayers the ability to recover excise taxes paid on fuel later dyed for non-taxable use—if you meet certain terminal removal and tax-paid requirements.
By NomadicTax Research Team • 5-8 min read • April 24, 2026
## What is § 6435 and Why It Matters
Section 6435 was added by the **One, Big, Beautiful Bill Act (OBBBA)**. It allows for recovery of excise tax under § 4081 for clean diesel or kerosene fuel taxed initially but subsequently removed as **indelibly dyed fuel for nontaxable use** as of **December 31, 2025**. ([irs.gov](https://www.irs.gov/irb/2026-04_IRB?utm_source=openai))
Until recently, such fuel users had no statutory remedy to recover the tax imposed at terminal removal even when fuel was retasked for nontaxable usage. § 6435 closes that gap. ([irs.gov](https://www.irs.gov/irb/2026-04_IRB?utm_source=openai))
## Key Eligibility Criteria
To successfully file a § 6435 claim, you must satisfy ALL the following:
- The fuel must have been taxed under § 4081 initially (no credit or refund at that time).
- Later removed from an IRS-approved terminal as dyed fuel.
- The dyed fuel must be indelibly dyed by **mechanical injection** and removed for **nontaxable use**.
- The removal must occur on or after **December 31, 2025**. ([irs.gov](https://www.irs.gov/irb/2026-04_IRB?utm_source=openai))
## Timing and Process (What’s Next)
- The IRS is preparing **guidance** to explain how to claim, verification required, forms to file, and processing timelines. ([irs.gov](https://www.irs.gov/irb/2026-04_IRB?utm_source=openai))
- Do **not file any § 6435 claims** until the guidance is released. The IRS will **not process claims** until then. ([irs.gov](https://www.irs.gov/irb/2026-04_IRB?utm_source=openai))
## Practical Example
**Example:** A transport company buys clear diesel fuel and pays the § 4081 excise tax when removed from an approved terminal on January 15, 2026. They then later remove that fuel from a terminal specifying it as dyed diesel for agricultural use (a nontaxable use), with mechanical dye injection in place.
This company meets all criteria and may file a § 6435 claim once IRS issues process guidance. If the tax paid was 24.4 cents per gallon, and they used 10,000 gallons, they may recover the full amount of § 4081 tax under § 6435 (assuming removal qualifies).
## What To Do Now
- Keep meticulous **records**: invoices showing terminal removal, dyed fuel status, proof of mechanical dye, quantities involved, date of removal.
- Monitor IRS releases, especially guidance via the Internal Revenue Bulletin.
- Speak with your tax advisor to prepare, particularly as fuel prices and tax rates vary and might affect refund amounts.
## Impact for Industry
Farmers, transport companies, generators, and anyone using dyed diesel or kerosene are likely beneficiaries. The change provides cash flow relief, reduces costs for nontaxable users, and may encourage more accurate fuel classification and terminal operations.
## Risks and Considerations
- Misclassified fuel or missing documentation can disqualify a claim.
- If the person filing wasn’t the original taxpayer who paid § 4081 tax, the law as currently written **may not allow** payment unless changed.
- Watch for potential IRS rules about who qualifies as “the person who paid”.
**Bottom Line:** If you handle dyed fuel and pay excise tax initially, § 6435 could unlock tax recovery opportunities—but only if you meet the specific requirements and file once IRS releases formal guidance. Acting preemptively by gathering records will set you up for success.