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Federal Corporation Application for Quick Refund of Overpayment of Estimated Tax
Extracted from PDF file 2025-federal-form-4466.pdf, last modified January 2026Corporation Application for Quick Refund of Overpayment of Estimated Tax
Form 4466 Corporation Application for Quick Refund of Overpayment of Estimated Tax (Rev. December 2025) OMB No. 1545-0123 Go to www.irs.gov/Form4466 for instructions and the latest information. Department of the Treasury Internal Revenue Service For calendar year 20 Name or tax year beginning , 20 , and ending Number and street. If a P.O. box, see instructions. , 20 Employer identification number Room or suite no. City or town State Telephone number (optional) ZIP code Check type of return to be filed (see instructions): Form 1120 Form 1120-C Form 1120-F Form 1120-L Form 1120-PC Other 1 Estimated income tax paid during the tax year . . . . . . . . 1 2 Overpayment of income tax from prior year credited to this year’s estimated tax . . . . . . . 2 3 Total. Add lines 1 and 2 . . . . . . . . 3 4 Enter total tax from the appropriate line of your tax return. See instructions . 5a Personal holding company tax, if any, included on line 4 . . . . . . 7 . . . . . . . . . . . . . b Estimated refundable tax credit for federal tax on fuels . . . . . . . . . . . . . . . 4 5a 5b 6 6 Total. Add lines 5a and 5b . . 7 Expected income tax liability for the tax year. Subtract line 6 from line 4 . . 8a Overpayment of estimated tax. Subtract line 7 from line 3. If this amount is at least 10% of line 7 and at least $500, the corporation is eligible for a quick refund. Otherwise, do not file this form. See instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b Routing number . . . . . . c Type: . . Checking 8a Savings d Account number Record of Estimated Tax Deposits Date of deposit Amount Amount Date of deposit Under penalties of perjury, I declare that I have examined this application, including any accompanying schedules and statements, and to the best of my knowledge and belief, it is true, correct, and complete. Sign Here Signature For Paperwork Reduction Act Notice, see separate instructions. Date Cat. No. 12836A Title Form 4466 (Rev. 12-2025) Created 11/20/25
Form 4466 (Rev. December 2025)
More about the Federal Form 4466 Corporate Income Tax Estimated TY 2025
We last updated the Corporation Application for Quick Refund of Overpayment of Estimated Tax in January 2026, so this is the latest version of Form 4466, fully updated for tax year 2025. You can download or print current or past-year PDFs of Form 4466 directly from TaxFormFinder. You can print other Federal tax forms here.
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TaxFormFinder has an additional 774 Federal income tax forms that you may need, plus all federal income tax forms.
| Form Code | Form Name |
|---|---|
| Form W-9 | Request for Taxpayer Identification Number and Certification |
| Form 941 | Employer's Quarterly Federal Tax Return |
| 1040 (Schedule B) | Interest and Ordinary Dividends |
| Form 943 | Employer's Annual Federal Tax Return for Agricultural Employees |
| Form 1095-A | Health Insurance Marketplace Statement |
View all 775 Federal Income Tax Forms
Form Sources:
The Internal Revenue Service usually releases income tax forms for the current tax year between October and January, although changes to some forms can come even later. We last updated Federal Form 4466 from the Internal Revenue Service in January 2026.
Form 4466 is a Federal Corporate Income Tax form. While most taxpayers have income taxes automatically withheld every pay period by their employer, taxpayers who earn money that is not subject to withholding (such as self employed income, investment returns, etc) are often required to make estimated tax payments on a quarterly basis. Failure to make correct estimated payments can result in interest or penalties.
About the Corporate Income Tax
The IRS and most states require corporations to file an income tax return, with the exact filing requirements depending on the type of company.
Sole proprietorships or disregarded entities like LLCs are filed on Schedule C (or the state equivalent) of the owner's personal income tax return, flow-through entities like S Corporations or Partnerships are generally required to file an informational return equivilent to the IRS Form 1120S or Form 1065, and full corporations must file the equivalent of federal Form 1120 (and, unlike flow-through corporations, are often subject to a corporate tax liability).
Additional forms are available for a wide variety of specific entities and transactions including fiduciaries, nonprofits, and companies involved in other specific types of business.
Historical Past-Year Versions of Federal Form 4466
We have a total of thirteen past-year versions of Form 4466 in the TaxFormFinder archives, including for the previous tax year. Download past year versions of this tax form as PDFs here:
2025 Form 4466
Form 4466 (Rev. December 2025)
2024 Form 4466
Form 4466 (Rev. October 2018)
2023 Form 4466
Form 4466 (Rev. October 2018)
2022 Form 4466
Form 4466 (Rev. October 2018)
2021 Form 4466
Form 4466 (Rev. October 2018)
2020 Form 4466
Form 4466 (Rev. October 2018)
2019 Form 4466
Form 4466 (Rev. October 2018)
2018 Form 4466
Form 4466 (Rev. October 2018)
2017 Form 4466
Form 4466 (Rev. October 2016)
2016 Form 4466
Form 4466 (Rev. October 2016)
2015 Form 4466
Form 4466 (Rev. December 2012)
2012 Form 4466
Form 4466 (Rev. December 2012)
2011 Form 4466
Form 4466 (Rev. December 2009)
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