Forms Library

French supplementary tax return form.

French supplementary income tax return form.

Irish Revenue helpsheet providing guidance on completing the CG1 Capital Gains Tax Return.

CIS Return and Payment Form

CIS return form for Construction Industry Scheme participants.

Colorado retail sales tax return for businesses collecting and remitting state sales tax.

Colorado individual income tax return for full-year and part-year residents. The primary form for filing Colorado state income taxes.

Colorado schedule for making voluntary contributions to qualifying charitable organizations through the tax return.

Colorado amended individual income tax return for correcting previously filed DR-0104 returns.

Colorado fiduciary income tax return for estates and trusts required to file in Colorado.

Colorado partnership and S corporation income tax return, also used for composite filing.

Colorado C corporation income tax return for corporations doing business in Colorado.

Colorado C corporation income tax return for the 2024 tax year.

Colorado Department of Revenue form for filing annual state income tax returns.

Australian Taxation Office form COMPANY-TR-2024. Official tax form available for free online filling and download.

Australian Taxation Office form FBT-2026-COMP. Official tax form available for free online filling and download.

Connecticut resident individual income tax return. The primary form for Connecticut residents to file state income taxes.

Connecticut application for extension of time to file individual 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.

Connecticut amended income tax return for individuals who need to correct a previously filed CT-1040.

Irish Revenue Corporation Tax return form CT1 for companies, covering tax year 2024.

Corporation tax return form for companies and other entities.

HMRC Company Tax Return form CT600 for corporation tax, version 3 (2021 edition).

HMRC simplified Company Tax Return form for smaller companies with straightforward tax affairs.