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Tax forms cover a broad range of documents used to report income, claim credits, pay taxes, and stay compliant with federal, state, and local tax authorities. Whether you're filing a personal income tax return, reporting payroll taxes as an employer, managing the finances of an estate or trust, or appealing a property tax assessment, there's a specific form designed for each situation. This category includes 60 forms spanning everything from foundational documents like Form 1040 and Form W-2 to more specialized filings such as Form 1041 for estates and trusts, Form 941 for quarterly payroll reporting, and state-specific returns for California, Arizona, and Texas.

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IRS Form W-9 · Filled by Instafill.ai in 34 sec

IRS Form W-9 filled by Instafill.ai

About tax forms

These forms are used by a wide range of people and organizations — individual employees, self-employed workers and freelancers, small business owners, S corporations, partnerships, nonprofits, and foreign nationals earning U.S.-sourced income. Situations that commonly trigger a tax form include starting a new job, receiving gambling winnings, taking an early retirement distribution, correcting a prior-year return, or requesting an extension. Property owners and dealers in Texas, for example, may need state-specific forms to handle local tax obligations, while nonresident aliens have their own dedicated filing requirements under the IRS.

Filling out tax forms correctly matters — errors can lead to penalties, delayed refunds, or compliance issues. Tools like Instafill.ai use AI to help complete these forms accurately in under 30 seconds, making it a practical option for anyone who wants to get through the paperwork quickly and securely.

Forms in This Category

Form Name Pages
1. W-9, Request for Taxpayer Identification Number and Certification 6
2. Form W-2, Wage and Tax Statement 11
3. Form 130, Taxpayer's Notice to Initiate an Appeal 3
4. Form 5329, Additional Taxes on Qualified Plans 2
5. Form 1040-X, Amended U.S. Individual Income Tax Return 2
6. Form 940, Employer’s Annual FUTA Tax Return 4
7. Form 720, Quarterly Federal Excise Tax Return 8
8. Form 982, Reduction of Tax Attributes 1
9. Form 8959, Additional Medicare Tax 1
10. Form 1041, U.S. Income Tax Return for Estates and Trusts 3
11. Form 8801, Credit for Prior Year Minimum Tax 4
12. Form 5330, Return of Excise Taxes 6
13. Form 540, California Resident Income Tax Return 6
14. Form FTB 3514, California Earned Income Tax Credit 4
15. Form 540NR, California Nonresident Tax Return 6
16. Form 8288, U.S. Withholding Tax Return 2
17. Form 540 2EZ, California Resident Tax Return 5
18. Form 8613, Return of Excise Tax 3
19. Form 2438, Undistributed Capital Gains Tax Return 3
20. Form 1040-C, U.S. Departing Alien Income Tax Return 4
21. Form 4137, Social Security and Medicare Tax on Unreported Tip Income 2
22. Form 911, Request for Taxpayer Advocate Service Assistance 4
23. Form 990, Return of Organization Exempt From Income Tax 12
24. Form 8960, Net Investment Income Tax 1
25. Form 8919, Uncollected Social Security and Medicare Tax 2
26. Form 990-T, Exempt Org Business Income Tax Return 2
27. Form 945, Annual Return of Withheld Federal Income Tax 2
28. Form 100, CA Corp Tax Return 6
29. Form 3911, Taxpayer Statement Regarding Refund 2
30. Form 8038, Information Return for Tax-Exempt Private Activity Bond Issues 3
31. Form 540NR, California Nonresident Tax Return 5
32. Form 8821, Tax Information Authorization 1
33. Form 8885, Health Coverage Tax Credit 1
34. Form 1127, Application for Extension of Time for Payment of Tax Due to Undue Hardship 4
35. Form 4868, Application for Automatic Extension of Time To File U.S. Individual Income Tax Return 4
36. Form 1040-ES, Estimated Tax for Individuals 12
37. Form 1120-S, U.S. Income Tax Return for an S Corporation 5
38. Form 941, Employer’s Quarterly Federal Tax Return 3
39. Form 5329, Additional Taxes on Qualified Plans 3
40. Form 1040-NR, U.S. Nonresident Alien Income Tax Return 2
41. Form 1040-SR, U.S. Tax Return for Seniors 4
42. Form 1099-PATR, Taxable Distributions from Cooperatives 6
43. Form 8962, Premium Tax Credit (PTC) 2
44. Form 1040, U.S. Individual Income Tax Return 2
45. Form 5329, Additional Taxes on Qualified Plans 3
46. Arizona Form 285-I, Individual Income Tax Disclosure/Representation Authorization Form 1
47. WestRock Credit Application and Uniform Sales & Use Tax Exemption/Resale Certificate — Multijurisdiction 8
48. Form W-8IMY (Rev. October 2021), Certificate of Foreign Intermediary, Foreign Flow-Through Entity, or Certain U.S. Branches for United States Tax Withholding and Reporting 8
49. Form W-2, Wage and Tax Statement (2025) 11
50. Form 941-X (Rev. April 2023), Adjusted Employer’s QUARTERLY Federal Tax Return or Claim for Refund 6
51. Dealer’s Heavy Equipment Inventory Tax Statement (Form 50-266) 4
52. Schedule E (Form 1120-S), Shareholder’s Stock and Debt Basis Limitations 2
53. Schedule C (Form 1040), Profit or Loss From Business (Sole Proprietorship) (2017) 2
54. Form 8919, Uncollected Social Security and Medicare Tax on Wages 1
55. Form W-2G, Certain Gambling Winnings (Rev. January 2026) 7
56. Form 8822-B, Change of Address or Responsible Party — Business 1
57. 2026 Form 1040-ES, Estimated Tax for Individuals 15
58. Form W-2G (Rev. January 2026), Certain Gambling Winnings 7
59. Form 8822-B (Rev. December 2019), Change of Address or Responsible Party — Business 1
60. Form 1065, U.S. Return of Partnership Income 6
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