Form IT38S
Form IT38S is an Irish tax form issued by the Revenue Commissioners. The 'IT' prefix suggests it relates to Income Tax, and the 'S' likely indicates it's a supplementary form.
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Form IT38S
Form IT38S is an Irish tax form issued by the Revenue Commissioners. The 'IT' prefix suggests it relates to Income Tax, and the 'S' likely indicates it's a supplementary form.
Risk Radar
- Using an outdated version of the form is a common mistake that can lead to processing delays.
- Incorrect income figures leading to under or over payment of tax
- Missing signatures or required declarations
- Using an outdated version of the form
- Failing to include necessary supporting documentation
Plain English
This is an Irish tax form from the tax authority. If you're dealing with Irish income taxes and need to provide additional information or corrections, this supplementary form might be relevant.
Submission Date
- Supplementary tax declarations generally have deadlines 4 weeks after the initial filing deadline or when the change occurs, whichever is later.
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
What this form is for
- • Use for supplementary income declarations after your initial tax return
- • Use for correcting errors in previously filed tax returns
- • Use when reporting additional income not initially declared
- • Not for initial tax returns - use the main IT form instead
- • Not for VAT matters - use VAT-specific forms
Use this form or another form?
| Situation | Likely form | Why it matters | Check before you continue |
|---|---|---|---|
| Initial income tax return | IT20 or main IT form | First-time declaration requires the primary form | Check if you're filing for the first time |
| VAT reporting | VAT returns | Different tax type with separate rules | Confirm you're dealing with income tax, not VAT |
| Corporation tax | CT1 form | Different tax for companies vs individuals | Verify if you're filing as an individual or company |
| Capital gains tax | CGT forms | Specific tax for asset sales | Check if your income is from employment or asset sales |
Deadline or filing window
Supplementary tax declarations generally have deadlines 4 weeks after the initial filing deadline or when the change occurs, whichever is later.
Before you submit
- • Complete all sections relevant to your situation
- • Double-check calculations and personal details
- • Sign and date the form if required
- • Include any necessary supporting documents
- • Keep a copy of the submitted form for your records
How to file this form
- 1Obtain the latest version of Form IT38S from Revenue's website
- 2Complete all required sections with accurate information
- 3Calculate any additional tax liability or refund due
- 4Submit through ROS, by post, or in person as appropriate
- 5Keep proof of submission for your records
Known limitations
- • May not be used for initial tax returns
- • Cannot be used for VAT matters
- • Processing times may vary depending on submission method
- • May require additional documentation for complex cases
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✦ Open in AI EditorCurrent Form Status
Form versions may be updated annually or when tax rules change. Always check Revenue's website for the most current version before filing.
Agency: Revenue Commissioners
What changed or needs a fresh check
- • Verify the form matches the current tax year
- • Check for any recent updates to tax rates or allowances
- • Confirm all personal details sections are still required
- • Ensure calculation methods haven't changed
Quick Facts
Form Details
- Agency
- Revenue Commissioners
- Category
- Capital Acquisitions Tax
- Source
- CAT Forms ↗
Downloads
After you file
- • Monitor your correspondence for any queries from Revenue
- • Check your tax account for updated status
- • Keep all records for at least 6 years as required by tax law
- • Follow up if you don't receive acknowledgment within expected timeframe
Source and verification log
- • Form name: IT38S
- • Issuing agency: Revenue Commissioners (REVENUE)
- • Form number: IT38
- • Prefix 'IT' suggests relation to Income Tax
- • Suffix 'S' likely indicates supplementary form
- • Supplementary forms typically used for corrections or additional information
- • Can be submitted through Revenue Online Service (ROS)
- • Not confirmed in official source for exact requirements or deadlines
Common confusion points
5 things to watch for
- 1
Confusing this form with the main income tax return form
- 2
Uncertainty about when supplementary declarations are required
- 3
Difficulty determining which sections apply to your situation
- 4
Confusion about supporting documentation requirements
- 5
Uncertainty about deadlines for supplementary filings
Related Guides & Resources
Irish Form No. 29 Notice of the Decision or Claim of the Revenue Commissioners - No. 29 Notice of the Decision or Claim of the Revenue Commissioners
Irish COURTS form No. 29 Notice of the Decision or Claim of the Revenue Commissioners: Appendix C: Notices, Affidavits etc - Forms in Superior Court Proceedings.
View →Irish Form 11 - Form 11
Irish REVENUE form 11: Form 11.
View →Irish Form Guide - Guide to completing 2018 Pay and File tax returns
Irish REVENUE form Guide: Guide to completing 2018 Pay and File tax returns.
View →Irish Form 12 - Form 12
Irish REVENUE form 12: Form 12.
View →Source transparency
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