Official form guide
Form CG1
Form CG1 is an Irish tax form issued by the Revenue Commissioners. It appears to be related to capital gains reporting based on its naming convention.
Need help with Form CG1?
Open it in the AI Editor for field guidance, checks, and PDF export.
Form Overview
Revenue Commissioners - Form CG1
Form CG1 is an Irish tax form issued by the Revenue Commissioners. It appears to be related to capital gains reporting based on its naming convention.
Risk Radar
Scan points- 1The most common mistake is miscalculating the amount of taxable capital gains.
- 2Incorrect calculation of capital gains
- 3Missing required supporting documents
- 4Filing after the deadline
- 5Providing inaccurate personal or business details
Plain English
This is a tax form from Revenue, Ireland's tax collection agency. If you've sold assets like property or investments and made a profit, you might need this form.
Submission Date
- Filing date: Form CG1 should typically be submitted by the annual tax return deadline, which is usually October 31st for the previous tax year. Not confirmed in official source.
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
AI co-pilot
Fill it faster. Catch mistakes before you file.
Glossary Terms
No matched glossary terms in this overview yet.
Hover a term to preview the meaning.
What this form is for
- Use this form for reporting capital gains on assets sold in Ireland
- Use this form for corporate tax declarations if specifically required
- Do not use this form for income tax returns - use Form 12 instead
- Do not use this form for VAT matters - use Form VAT 3 instead
- Consult Revenue's guidance if unsure which form applies to your situation
Form selector
Use this form or another form?
Selling property in Ireland
Different tax rates may apply
✓ Confirm if this is the correct form for property sales
Reporting business income
Different reporting requirements
✓ Check if your business needs to file Form 12 instead
VAT registration
Different tax system entirely
✓ Ensure you're filing the correct tax-related form
PAYE operations
Different employer obligations
✓ This form is for employee tax deductions, not capital gains
Deadline or filing window
Form CG1 should typically be submitted by the annual tax return deadline, which is usually October 31st for the previous tax year. Not confirmed in official source.
Before you submit
- 1All sections completed accurately
- 2Correct personal or business details provided
- 3Supporting documents attached if required
- 4Form signed where necessary
- 5Correct payment included if tax is due
- 6Copy retained for personal records
- 7Deadline checked and met
How to file this form
- 1Obtain the latest version of Form CG1 from Revenue's website
- 2Complete all sections with accurate information
- 3Calculate any capital gains or tax amounts correctly
- 4Gather required supporting documents
- 5Submit through Revenue Online Service (ROS) or by post
- 6Keep a copy of the submitted form for your records
- 7Follow up with Revenue if you don't receive acknowledgment
Known limitations
- 1Form CG1 may not cover all types of capital gains
- 2Special rules may apply to certain assets or industries
- 3Form may not be suitable for non-resident taxpayers
- 4Additional forms may be required for complex situations
- 5Form may not be accepted if not completed correctly
Field map
Compact field-by-field guide
Identity
3 items
Your full name as Revenue holds it.
Your Personal Public Service number — Revenue matches the form to your record with this.
Your current address, including Eircode.
Details
1 items
The year or period the form relates to.
Amounts
1 items
Enter each amount against the heading it belongs to.
Declaration
1 items
Sign to confirm the details are correct and complete.
Almost done reviewing the fields?
Fillable formOpen in Editor->Form CG1 is currently in use, but tax forms may be updated annually. Check Revenue's website for the latest version.
What changed or needs a fresh check
- Check if the form has been updated for the current tax year
- Verify if any sections have been added or removed
- Confirm if the calculation methods have changed
- Check if contact information for Revenue has been updated
- Ensure you're using the latest version to avoid processing delays
Quick Facts
Downloads & source
Sources
- SRCForm issued by Revenue Commissioners
- SRCForm number: CG1
- SRCForm name: Form CG1
- SRCPurpose: Likely related to capital gains reporting
- SRCSubmission method: Likely through Revenue Online Service
- SRCDeadline: Not confirmed in official source
- SRCSpecific requirements: Not confirmed in official source
- SRCLatest version: Not confirmed in official source
Common confusion points
Whether this form applies to personal or business capital gains
How to calculate the correct taxable amount
What supporting documents are required
The difference between CG1 and other capital gains forms
How to report losses using this form
Whether foreign capital gains need to be reported
The deadline for submission and any extensions available
Source transparency
Copyright & Licensing — Irish Government Forms
BrieflyGo links to and explains official public form sources. We are not a government agency, and this page is for general form guidance, not legal advice.
Understand the agreement before you sign it.
Review risky clauses in plain English, fix the document, and keep it moving toward signature.