Self-assessment

The system where you calculate your own tax, file a return and pay by the deadline, rather than having it deducted at source.

Also searched as: self assessed, self-assessed.

Form 11 guide

Seed definition reviewed 2026-10-28. Editorial verification by a tax-qualified reviewer is required before indexing.

PAYEWise.ie

Check if you are due tax back, then claim your Irish tax refund for free. Free guides, honest calculators and the official route to claim.

Learn

Tax refunds and tax back
Tax reliefs
Questions answered
How each tax works
Glossary

Do

Complete a return
Relief finder
Tax refund calculator
All tools
Ask an accountant

Trust

About
Editorial policy
Sources
Updates
Pricing
Contact
Privacy
Terms

PAYEWise.ie is independent and is not part of Revenue. Revenue does not charge for filing through myAccount or ROS. PAYEWise provides educational information, not personalised tax advice. Only Revenue determines liabilities and repayments.

Official links on this site open only on revenue.ie or ros.ie. Never share your myAccount or ROS password with anyone, including us.

Reference tax year 2026. Content is reviewed annually after each Budget and Finance Act.

Home
Glossary
Self-assessment

Glossary

Self-assessment

The system where you calculate your own tax, file a return and pay by the deadline, rather than having it deducted at source.

Also searched as: self assessed, self-assessed.

Form 11 guide

Seed definition reviewed 2026-10-28. Editorial verification by a tax-qualified reviewer is required before indexing.

Self-assessment

Related

Self-assessment

Related