Tax Forms
Browse official and fillable tax PDFs. Open a form to fill it online, download a blank copy, or print it for filing.
Find the right tax form
Tax forms are commonly used by taxpayers, payroll teams, bookkeepers, accountants, and small businesses. This hub organizes 1,509 fillable PDFs so you can find the right document, fill it online, download a blank copy, and keep a record for filing.
Filing checklist
- Open the form detail page and verify the agency, year, revision date, and source link.
- Read the official instructions before submitting the completed form.
- Review the official IRS or state instructions for the current filing year.
- Verify recipient, payer, employer, and taxpayer details against source records before filing.
1,509 Tax Forms
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Colorado DR-0112(2023)
C Corporation Income Tax Return
Colorado C corporation income tax return for corporations doing business in Colorado.
Colorado DR-0112 (2024)(2024)
C Corporation Income Tax Return
Colorado C corporation income tax return for the 2024 tax year.
Colorado DR-0158-C(2023)
Extension Payment Voucher for C Corporation
Colorado extension payment voucher for C corporation income tax filers requesting additional time to file.
Colorado DR-0158-I(2023)
Extension Payment Voucher for Individual
Colorado extension payment voucher for individual income tax filers requesting additional time to file.
Colorado DR-0204(2024)
Estimated Income Tax Payment Voucher
Colorado estimated income tax payment voucher for individuals making quarterly estimated payments.
Colorado DR-0900(2023)
Individual Income Tax Payment Voucher
Colorado payment voucher for submitting individual income tax payments.
Colorado DR-0900C(2023)
C Corporation Income Tax Payment Voucher
Colorado payment voucher for submitting C corporation income tax payments.
Colorado DR-0900F(2023)
Fiduciary Income Tax Payment Voucher
Colorado payment voucher for submitting fiduciary (estate/trust) income tax payments.
Colorado Income Tax Return(2025)
Colorado Individual Income Tax Return
Colorado Department of Revenue form for filing annual state income tax returns.
Company tax return and instructions 2024(2025)
Company tax return and instructions 2024
Australian Taxation Office form COMPANY-TR-2024. Official tax form available for free online filling and download.
Completing your FBT return 2026 - all employers(2025)
Completing your FBT return 2026 - all employers
Australian Taxation Office form FBT-2026-COMP. Official tax form available for free online filling and download.
Cotisation minimale d'impôt sur les sociétés(2025)
Cotisation minimale d'impôt sur les sociétés
Cotisation minimale d'impôt sur les sociétés
CT-1040 (Connecticut)(2024)
Connecticut Resident Income Tax Return
Connecticut resident individual income tax return. The primary form for Connecticut residents to file state income taxes.
CT-1040 EXT (Connecticut)(2024)
Application for Extension of Time to File
Connecticut application for extension of time to file individual income tax return.
CT-1040 TCS (Connecticut)(2024)
Tax Calculation Schedule
Connecticut tax calculation schedule used with Form CT-1040 to compute tax liability.
CT-1040NR/PY (Connecticut)(2024)
Nonresident/Part-Year Resident Income Tax Return
Connecticut nonresident and part-year resident income tax return for individuals who moved into or out of Connecticut during the tax year.
CT-1040X (Connecticut)(2024)
Amended Connecticut Income Tax Return
Connecticut amended income tax return for individuals who need to correct a previously filed CT-1040.
CT-400 (New York)(2025)
Estimated Tax for Corporations
New York estimated tax payment form for corporations required to make quarterly estimated tax payments.
CT-W4P (Connecticut)(2024)
Withholding Certificate for Pension or Annuity Payments
Connecticut withholding certificate for pension, annuity, and other retirement distributions.
CT1 (Ireland)(2024)
Corporation Tax Return
Irish Revenue Corporation Tax return form CT1 for companies, covering tax year 2024.
CT600(2025)
Corporation Tax Return
Corporation tax return form for companies and other entities.
CT600 (2021)(2021)
Company Tax Return 2021
HMRC Company Tax Return form CT600 for corporation tax, version 3 (2021 edition).
CT600 Short(2008)
Company Short Tax Return
HMRC simplified Company Tax Return form for smaller companies with straightforward tax affairs.
CT600A(2025)
Corporation Tax Return - Supplementary
Supplementary page for corporation tax return with additional details.
Common mistakes to avoid
- Mixing the wrong tax year or revision with the current filing requirement.
- Entering taxpayer names or identification numbers that do not match official records.
- Forgetting attachments, schedules, recipient copies, signatures, or filing deadlines.