Methodology & Sources

Calculator status

The calculator is suspended. Its former model and state-credit assumptions did not provide a reliable basis for estimating eligibility or savings. No formulas or state rebate estimates are currently applied. Do not rely on earlier results.

Sources used for the guides

The federal guidance was reviewed against these primary sources on November 7, 2026. Historical rules are described only in the context of qualifying earlier acquisitions; the applicable rules depend on the transaction and year.

• IRS clean vehicle tax credits overview and acquisition deadline FAQ
• IRS new clean vehicle credit and used clean vehicle credit
• IRS transfer FAQ and Form 8936
• U.S. Department of Energy state laws and incentives directory

Limits

These summaries are not a substitute for the law, IRS instructions for the relevant tax year, program administrator guidance, or individualized tax advice. The site does not verify a vehicle, transaction, filing status or state incentive for you. Sources may change after the review date.

See the guides or consult a qualified tax professional.