Official form guide
Form IT31
Form IT31 is an Irish tax form issued by the Revenue Commissioners for income tax purposes. It is used for reporting specific tax information or making declarations to the tax authority.
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Form Overview
Revenue Commissioners - Form IT31
Form IT31 is an Irish tax form issued by the Revenue Commissioners for income tax purposes. It is used for reporting specific tax information or making declarations to the tax authority.
Risk Radar
Scan points- 1Many people make errors by not completing all required sections or providing outdated information.
- 2Incorrect calculation of taxable amounts
- 3Missing required supporting documentation
- 4Late submission leading to penalties
- 5Inaccurate personal or business details
Plain English
This is a tax form that helps you report certain details to Revenue. If you're dealing with Irish income tax matters, you might need this form to provide information about your tax affairs.
Submission Date
- Filing date: Deadlines typically align with the end of the tax year (December 31st) or specific quarterly reporting periods, but always check Revenue's website for the exact deadline applicable to your situation.
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
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What this form is for
- Use when specifically requested by Revenue for your tax situation
- Required for certain income tax declarations
- May be needed for self-assessment tax returns
- Different from other IT forms which serve different tax purposes
Form selector
Use this form or another form?
Self-employment income
Different reporting requirements for business income
✓ Verify your income type before choosing
Rental income
Different reporting structure for property income
✓ Check if expenses need separate documentation
Capital gains tax
Different rates and calculations
✓ Determine if disposal qualifies for exemptions
PAYE income
Different pre-computed tax situation
✓ Confirm if employer has already reported income
Non-resident tax matters
Different residency rules apply
✓ Verify your tax residency status first
Deadline or filing window
Deadlines typically align with the end of the tax year (December 31st) or specific quarterly reporting periods, but always check Revenue's website for the exact deadline applicable to your situation.
Before you submit
- 1All sections completed with accurate information
- 2Supporting documents attached if required
- 3Form signed and dated where necessary
- 4Correct payment included if applicable
- 5Copy retained for your records
- 6Check Revenue website for any last-minute updates
How to file this form
- 1Obtain the current version of Form IT31 from Revenue's website
- 2Complete all required sections with accurate information
- 3Gather necessary supporting documentation
- 4Submit through ROS portal, by post, or in person as appropriate
- 5Keep a copy for your records
- 6Follow up if you don't receive confirmation within expected timeframe
Known limitations
- 1Not for all types of income reporting
- 2May not cover international tax situations
- 3Does not replace professional tax advice
- 4May require additional forms for complete tax submission
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->This form is currently in use, but always check Revenue's website for the most up-to-date version before submitting.
What changed or needs a fresh check
- Check for any recent changes in tax rates
- Verify current personal tax credit amounts
- Confirm updated contact information requirements
- Review any new digital submission requirements
Quick Facts
Downloads & source
Sources
- SRCForm number IT31 issued by Revenue Commissioners
- SRCRevenue Online Service (ROS) is the primary submission portal
- SRCTax forms follow Irish fiscal year (January to December)
- SRCNot confirmed in official source: specific purpose of IT31
- SRCNot confirmed in official source: exact sections on the form
- SRCNot confirmed in official source: current tax rates on the form
- SRCNot confirmed in official source: recent changes to the form
Common confusion points
Determining when this specific form is needed versus other IT forms
Understanding which sections apply to your situation
Knowing what supporting documentation is required
Differentiating between this form and self-assessment requirements
Understanding the implications of information provided
Source transparency
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