Whether an excise tax is deductible turns on who paid it and why, not on the word excise. Paid in carrying on a trade or business it is generally deductible. Paid personally it is generally not, unless it happens to satisfy a narrow three-part test that has nothing to do with being called an excise tax. And a short list of excise taxes is never deductible by anyone.
What an excise tax is, and how it differs from a sales tax, is set out in excise tax vs sales tax. What follows is only the deduction question.
The Business Route
Two different sections do the work, and which one applies depends on who levied the tax.
A state, local or foreign excise tax paid in business. Section 164 allows a deduction, beyond the four categories it lists by name, for State and local, and foreign, taxes not described in that first sentence which are paid or accrued within the taxable year in carrying on a trade or business or an activity described in section 212, relating to expenses for production of income (26 U.S.C. 164(a)). An excise tax is not one of the four named categories, so this is the sentence that reaches it.
A federal excise tax paid in business. Section 164(a) does not reach it, because every category in that subsection is a State, local or foreign tax apart from the GST tax on income distributions (26 U.S.C. 164(a)). The deduction comes instead from the general rule that there shall be allowed as a deduction all the ordinary and necessary expenses paid or incurred during the taxable year in carrying on any trade or business (26 U.S.C. 162(a)). The IRS states the same thing for the filer: you can deduct on Schedule C (Form 1040) all excise taxes that are ordinary and necessary expenses of carrying on your business (IRS, Publication 334 (2025), Tax Guide for Small Business).
The IRS applies that to a real case. A business may deduct Heavy Vehicle Use Taxes, which the federal government imposes on an annual basis on the use of heavy highway motor vehicles with a taxable gross weight of at least 55,000 pounds, reported on Form 2290 (IRS, Income and Expenses 6, reviewed 21 January 2026).
The Rule That Turns a Deduction Into Basis
This is where the answer most often flips, and the statute states it in one sentence.
Notwithstanding the trade or business sentence above, any tax not described in the first sentence of section 164(a) which is paid or accrued by the taxpayer in connection with an acquisition or disposition of property is treated as part of the cost of the acquired property or, in the case of a disposition, as a reduction in the amount realized on the disposition (26 U.S.C. 164(a)).
So an excise tax charged on buying an asset is not deducted at all in the ordinary sense. It goes into basis, and it comes back through cost recovery. The IRS says the same thing in plain terms: state and local governments may impose taxes and fees in connection with the acquisition of a vehicle, such as initial registration charges and excise or sales taxes, and those amounts paid to purchase a vehicle used in a business should be capitalized, then recovered once the vehicle is placed in service through a section 179 deduction or through annual depreciation deductions under section 168 (IRS, Income and Expenses 6, reviewed 21 January 2026). Where that recovered cost then goes is depreciable basis.
A recurring tax on owning the same asset behaves differently. Under the 12-month rule the IRS allows a deduction for these recurring taxes and fees as long as the right or benefit created by the payment does not extend beyond the earlier of 12 months after the first date the taxpayer realizes the right or benefit, or the end of the taxable year following the taxable year the payment is made, and its own example is that annually paid vehicle excise or personal property taxes are deductible while pre-paid multi-year vehicle excise or personal property taxes are deductible only in the year to which they apply (IRS, Income and Expenses 6, reviewed 21 January 2026).
The Personal Route Is a Three-Part Test
Outside a trade or business, an excise tax is deductible only if it is a personal property tax, and that term is defined rather than descriptive. A personal property tax means an ad valorem tax which is imposed on an annual basis in respect of personal property (26 U.S.C. 164(b)(1)).
The regulation breaks that into three tests, and a tax must meet all of them (26 CFR 1.164-3(c)).
It must be ad valorem, that is, substantially in proportion to the value of the personal property. A tax based on criteria other than value does not qualify, and the regulation’s example is a motor vehicle tax based on weight, model year and horsepower, or any of those characteristics. A tax partly based on value and partly on other criteria may qualify in part, and the regulation’s illustration is a motor vehicle tax of 1 percent of value plus 40 cents per hundredweight, where the part equal to 1 percent of value qualifies and the balance does not (26 CFR 1.164-3(c)(1)).
It must be imposed on an annual basis, even if collected more frequently or less frequently.
It must be imposed in respect of personal property, and a tax may be considered imposed in respect of personal property even if in form it is imposed on the exercise of a privilege. So state and local taxes on the registration or licensing of highway motor vehicles are not deductible as personal property taxes unless and to the extent the three tests are met, while an annual ad valorem tax does qualify even though it is denominated a registration fee imposed for the privilege of registering motor vehicles or of using them on the highways.
A separate limitation then sits over the personal deduction. In the case of an individual and a taxable year beginning after December 31, 2017, the aggregate amount of taxes taken into account under paragraphs (1), (2) and (3) of section 164(a), together with the general sales taxes a taxpayer may elect under section 164(b)(5), may not exceed an applicable limitation amount, or half that amount for a married individual filing a separate return. The statute sets the applicable limitation amount year by year in section 164(b)(7). That limitation does not apply to foreign taxes described in section 164(a)(3), nor to taxes described in paragraphs (1) and (2) of section 164(a) which are paid or accrued in carrying on a trade or business or an activity described in section 212 (26 U.S.C. 164(b)(5), (b)(6) and (b)(7)). The business route above is outside it.
The Excise Taxes Nobody Deducts
Some taxes are barred outright, and nine chapters of the Code are named. No deduction is allowed for taxes imposed by chapters 37, 41, 42, 43, 44, 45, 46, 50A and 54 (26 U.S.C. 275(a)(6)). Eight of those nine chapters sit in Subtitle D of the Code, headed Miscellaneous Excise Taxes, and they include the tax on repurchase of corporate stock, the public charities and private foundations chapters, the qualified pension plan chapter and the golden parachute payments chapter (26 U.S.C. Subtitle D). So a taxpayer reasoning from “excise taxes paid in business are ordinary and necessary” straight to a deduction can land on one of them.
The same section blocks several other taxes for everyone, among them federal income taxes including the employee share of FICA and tax withheld at source on wages, estate, inheritance, legacy, succession and gift taxes, and income, war profits and excess profits taxes imposed by a foreign country or a possession of the United States where the taxpayer chooses to take to any extent the benefits of section 901 (26 U.S.C. 275(a)).
Common Questions
If it was paid in carrying on a trade or business, generally yes, under section 162 for a federal excise tax or under the trade or business sentence of section 164(a) for a state, local or foreign one, unless it was paid in connection with acquiring property, in which case it becomes basis, or unless it is imposed by one of the chapters section 275(a)(6) names. If it was paid personally, only if it passes all three of the personal property tax tests.
Only where it is genuinely ad valorem and annual. Many state vehicle charges are not, because they are computed on weight, model year or horsepower, and the regulation says a tax based on criteria other than value does not qualify (26 CFR 1.164-3(c)). Where a charge is part value based and part not, only the value based part counts. A business using the vehicle solely for business has the easier route, because the recurring tax is then an operating cost rather than an itemized deduction (IRS, Income and Expenses 6, reviewed 21 January 2026).
Not as a separate deduction. Taxes on gasoline, diesel fuel and other motor fuels used in a business are usually included as part of the cost of the fuel, and the IRS instruction is not to deduct these taxes as a separate item. A taxpayer may instead be entitled to a credit or refund for federal excise tax paid on fuels used for certain purposes (IRS, Publication 334 (2025), Tax Guide for Small Business). That is a claim rather than a deduction, and it is filed accordingly.
For a business, on the operating expense line of the entity’s return, alongside the other taxes and licenses. For an individual it is an itemized deduction subject to the section 164(b)(6) limitation, which means it produces nothing at all for a client who takes the standard deduction. For an acquisition tax it shows up nowhere as a deduction and instead raises the basis carried on the fixed asset schedule, which is the ground fixed assets covers.
Accountably places trained offshore accountants and tax preparers inside US CPA and EA firms, and a firm can run a real block of its own return preparation and fixed-asset work through a trial task before anything client facing depends on it.
