This article is for Irish founders, startup CEOs, and small‑business owners who need to set up PAYE for the first time, as well as HR or finance managers responsible for payroll compliance.
You will learn what actions trigger PAYE registration, the exact information you must gather, the step‑by‑step ROS registration process, key monthly deadlines, and common pitfalls to avoid, enabling you to register correctly and keep ongoing payroll obligations under control.
Key Takeaways
- PAYE registration must be completed before any first payment of wages or salary, no matter how small or whether it is to an employee or a director.
- Hiring the first employee or paying a director’s salary triggers registration, while genuine contractors and domestic workers paid under €40 /week do not.
- Registration is done instantly through Revenue’s eRegistration service in ROS or myAccount at no cost, but must occur before the first payday to avoid automatic registration or penalties.
- Once registered, employers follow a strict monthly payroll cycle with deadlines on the 5th, 14th and 23rd of the following month and must retain all payroll records to stay compliant.

Registering as an Employer in Ireland: PAYE Guide 2026
Registering as an employer in Ireland is triggered by one event: paying someone for work. The payment does not need to be big, and the person does not need to be a full-time hire. A part-time assistant, a weekend bookkeeper, or a founder taking a modest director's salary all count.
This guide explains what triggers employer registration for PAYE, what to prepare, how the process works on ROS, and the recurring deadlines that start the moment Revenue confirms your registration. It reflects Revenue's rules as of June 2026.
What does employer registration mean?
Registering as an employer in Ireland, known as PREM registration, is how you tell Revenue that your business intends to pay wages, so that Income Tax, PRSI, and USC can be collected through your payroll. Once registered, you operate the PAYE system: you calculate deductions on every payment, report them to Revenue in real time, and pay over what you collect.
This matters even for very small teams. The obligations are the same whether you pay one person or fifty, and they apply from the first payment, not from some future size threshold. The practical question, then, is what counts as that first trigger.
What triggers PAYE registration?
You must register as an employer before you make your first payment of wages or salary, however small the amount. Revenue's guidance is direct: if you hire an employee, you must register as an employer.
Hiring your first employee is the obvious trigger, but it is not the only one. A limited company must register and operate PAYE on a director's salary even if there are no other employees. Many Irish startups hit this trigger long before their first hire, because the founders start paying themselves.
The edge cases are narrower than most founders expect:
ScenarioMust you register?You hire your first employee, full-time or part-timeYes, before the first paydayYour company pays a director a salary, with no other staffYesYou engage a genuine self-employed contractor who invoices youNo, they handle their own taxYou employ one domestic worker at home and pay under €40 a weekNo, this is the single narrow exemption
Table 1: common scenarios and whether they trigger employer registration in Ireland.
Be careful with the contractor row. Calling someone a contractor does not make them one; Revenue looks at the facts of the relationship, and misclassification can mean back tax, interest, and penalties. Once you know you have a real trigger, the next step is preparation.
We have seen cases were a director looks to put through a salary retrospectively but they have not registered the company for PAYE. This would mean that to disclose the payroll retrospectively a qualifying disclosure would be required. This adds penalties and interest as well as potentially being time consuming.
What do you need before you register?
Registration takes minutes on ROS, but the details you submit shape everything that follows. Have these ready:
- Your company's tax reference number. If the company is brand new and has no tax registrations at all yet, our guide to tax registration in Ireland covers the full TR2 process.
- The date of your first payment. This becomes your registration date.
- A payroll decision: software you run yourself or an outsourced payroll bureau. You need one of them working before the first payday, not after.
- A PPS number for each director, and in time for every employee you onboard.
Budget for the full cost of pay while you are at it. On top of gross salary you pay employer PRSI contributions, which add 11.25% to most salaries as of June 2026, rising to 11.40% from 1 October 2026.

Figure 1: what one €3,000 gross monthly pay run actually costs an Irish employer in 2026.
How does the registration process work?
Most businesses register as an employer through Revenue's eRegistration service in ROS or myAccount. An existing company adds Employer (PAYE/PRSI) to its tax registrations; paper forms (TR1, TR2, or PREM Reg) exist only for the small group that cannot use eRegistration. There is no registration fee.
Once the registration is processed, Revenue issues your employer registration number and your payroll software can connect to Revenue's systems. What you should not do is wait. If Revenue believes you should be registered and you have not done so, it can register you automatically.
Author's tip: Register as soon as the first pay date is agreed, not the week wages are due. You remove the risk of running an unregistered payday, and an early registration costs nothing if the start date slips.
What happens after PAYE registration?
Registration starts a monthly cycle that runs for as long as you have anyone on payroll. Before each pay run, you request the latest Revenue Payroll Notification (RPN) for every employee, which tells you their tax credits and cut-off points. If no RPN is available for a new starter, you must apply emergency tax until it comes through.
On or before each payday, you submit the pay and deductions to Revenue. Then the month closes out on a fixed rhythm:
DateWhat happens5th of the following monthRevenue makes your monthly statement available, based on your payroll submissions14th of the following monthThe statement is deemed your statutory return if you take no action23rd of the following monthPayment deadline if you file and pay through ROS (the 14th otherwise)
Table 2: the monthly employer cycle after PAYE registration, as of June 2026.
Keep the evidence as you go: payroll runs, RPNs, payslips, and payment confirmations. These records sit alongside your wider employment paperwork, from contracts to the policies in your employee handbook.
Never miss a payroll deadline again
Open Forest's compliance calendar tracks every PAYE, CRO, and tax deadline for your company and reminds you before each one lands.
Talk to us about ongoing compliance support.
What mistakes catch new employers out?
The most common employer registration mistakes are timing problems, not technical ones. Three come up again and again:
- Registering late. Since 2 March 2026, Revenue only allows a PREM registration to be backdated by one period through ROS. Anything longer means a MyEnquiries case explaining the delay, and possibly a voluntary disclosure.
- Running payroll before you are set up. Without an RPN, your new starter lands on emergency tax, which takes real money out of their first payslip and goodwill out of the relationship.
- Not keeping payroll evidence. A submission you cannot prove is a dispute you cannot win. Store the records from day one. Another area that companies now need to consider when registering for PAYE - is Enhanced Reporting Requirements. Since 2024, every time you reimburse a director's mileage, pay a remote-working allowance, or hand out a gift voucher under the small benefit exemption, you must report the details to Revenue through ROS on or before the payment date. Most founders discover this obligation the first time they expense a tank of fuel, usually weeks after the fact. Set up the ERR submission in your payroll software on day one, not the day Revenue sends a nudge.

Figure 2: the payroll clock starts at the first payment, whether or not you registered in time.
Your first payday, handled
One payment for work is all it takes: registering as an employer in Ireland is mandatory before you pay your first employee or salaried director. Register on ROS as soon as the first pay date is agreed, then build the monthly rhythm of RPNs, payday submissions, and the 14th and 23rd deadlines into how you run the company.
If you would rather not carry that rhythm alone, Open Forest registers new companies for PAYE as part of setup and keeps you compliant afterwards, with a compliance calendar that catches every deadline so you never find out about one the hard way.

Stuart Connolly is a corporate barrister in Ireland and the UK since 2012.
He spent over a decade at Ireland's top law firms including Arthur Cox & William Fry.













