ROS (Revenue Online Service)
aka ROS, Revenue Online
Revenue's secure portal for businesses, agents and large filers. Used to file VAT3, Form 11, CT1, RCT notifications, PAYE submissions and to access Revenue Payroll Notifications (RPNs).
Last reviewed April 2026
Definition
ROS (Revenue Online Service) is the Revenue Commissioners' secure portal for businesses, tax agents and employers. It is the only channel for filing most business taxes: VAT3 and RTD, Corporation Tax CT1, Income Tax Form 11 for self-assessed individuals, RCT contract and payment notifications, and PAYE submissions. ROS also hosts the Revenue Payroll Notifications (RPNs) that payroll software must pull before each run under PAYE Modernisation. Access is via a ROS Digital Certificate, a file-based credential that is tied to a specific user and computer and must be renewed every two years. Many accounting, payroll and tax software products integrate directly with ROS via Revenue's machine-to-machine APIs, letting users file returns without leaving the software; others export a ROS-compatible file that the user uploads manually. The Revenue MyAccount portal is separate and is intended for PAYE employees, not businesses.
Why it matters for software choice
ROS is the gate every Irish business tax return passes through. Accounting and payroll software that integrates directly with ROS removes a manual step, reduces transcription errors, and provides an audit trail of exactly what was filed and when. Software that only exports a file for manual upload is not disqualifying, but it adds friction and risk to every return cycle.
Authority sources
- Revenue Online Service (ROS) (www.ros.ie)
- Revenue: ROS Digital Certificates (www.revenue.ie)
Software categories this affects
Vendors covered by this term
BrightPay
Award-winning Irish payroll with full PAYE Modernisation and Revenue integration
Xero
Cloud accounting with direct AIB, BOI, and PTSB bank feeds for Irish SMEs
Surf Accounts
100% Irish-built cloud accounting with Revenue compliance and Dublin-based support
Collsoft Payroll
Irish payroll built for construction and mid-size businesses with RCT and CSO reporting
Related terms
PAYE Modernisation
Ireland's real-time payroll reporting regime, introduced by Revenue on 1 January 2019. Every payroll run must submit data to Revenue on or before the date employees are paid.
VAT3 return
The periodic VAT return filed with Revenue via ROS. Most Irish businesses file bi-monthly; small traders can apply for four-monthly or annual filing. An annual Return of Trading Details (RTD) accompanies the final period.
Corporation Tax (CT1)
The annual Corporation Tax return filed by Irish resident companies through ROS. Trading income is taxed at 12.5% (or 15% for large groups in scope of Pillar Two); passive income and certain non-trading profits are taxed at 25%.
Income Tax Return (Form 11)
The annual self-assessment income tax return for self-employed individuals, company directors with material interests, and taxpayers with non-PAYE income. Filed through ROS by 31 October (or mid-November via ROS Pay and File extension).