HR and payroll for startups in Ireland
Reviewed by Mellow Editorial Team, HR & payroll content team
Running HR and payroll correctly from your first hire matters more than most founders expect. Get the foundations right and you avoid penalties, disputes and the expensive scramble to fix things retrospectively.
Register before you pay anyone
Before you process a single payslip, your business needs to be registered as an employer with Revenue. You do this through ROS (Revenue Online Service). Once registered, you receive an employer registration number and access to the PAYE Modernisation system.
From that point, every payroll run requires a real-time submission to Revenue on or before each payday. There is no grace period and no monthly catch-up filing — the submission and the payment happen together. Missing this creates an immediate compliance gap that Revenue can see instantly.
If you are paying a contractor rather than an employee, be careful about classification. Revenue applies its own tests to determine employment status, and getting this wrong — even unintentionally — can result in back taxes, interest and penalties.
Understand what you are actually deducting
Irish payroll involves three separate deductions from employee pay, plus a separate employer cost on top.
Income tax runs at 20% on earnings up to roughly €44,000 for a single person, and 40% on earnings above that. Ireland does not use a personal allowance system. Instead, employees receive tax credits — the most common being the personal tax credit and the employee (PAYE) tax credit — which reduce the actual tax owed. Revenue issues each employee a Tax Credit Certificate, and your payroll software should pull this automatically via ROS.
USC (Universal Social Charge) is charged in bands: 0.5%, 2%, 3% and 8%, depending on income level. It applies to gross income above a low threshold and cannot be offset by tax credits.
PRSI (Pay Related Social Insurance) for most employees falls under Class A. The employee contributes approximately 4.1% of gross pay. As the employer, you pay approximately 11.15% on top — this is a cost you bear directly and it needs to be factored into every offer you make. On a €60,000 salary, your employer PRSI alone adds roughly €6,700 to your annual cost.
Getting these three deductions right from day one is not optional. Underpaying Revenue — even by accident — creates a liability that compounds.
Build your employment contracts and policies early
Many startups treat contracts as something to sort out later. That is a mistake. Under Irish law, employees are entitled to a written statement of their core terms within five days of starting, with a fuller contract of employment to follow. Failing to provide this leaves you exposed in any dispute.
Your contracts should reflect Irish statutory minimums as a floor, not a ceiling. Statutory annual leave in Ireland is four working weeks. Maternity, paternity and parental leave entitlements are set by statute and cannot be contracted away. Make sure your contracts are drafted for Irish law specifically — a template from the UK or US will have gaps and may create unintended obligations.
As you grow past a handful of people, you will also need written policies: grievance and disciplinary procedures, a dignity at work policy, and a data protection policy at minimum. The Workplace Relations Commission (WRC) will look for these if a complaint is ever lodged against you.
Pension auto-enrolment is coming in 2026
Ireland is introducing a mandatory pension auto-enrolment scheme called My Future Fund, with a planned start date of 2026. This will require most employers to automatically enrol eligible employees into a pension arrangement, with both employer and employee making contributions.
For startups, this means a new payroll obligation and an additional employment cost to plan for. If you do not already offer a pension scheme, now is a reasonable time to review your options — setting up a PRSA or group scheme before auto-enrolment begins may give you more flexibility than the default arrangement.
Keep payroll and HR records properly
Revenue can audit payroll records going back several years. You are required to keep payroll records — including details of all payments, deductions and submissions — for six years. This includes records for former employees.
On the HR side, maintain records of contracts issued, leave taken, and any disciplinary or grievance processes. If a WRC claim is brought against you, the burden often falls on the employer to demonstrate what happened. Good records are your primary defence.
Cloud-based payroll software that connects directly to ROS makes this significantly easier to manage. It reduces manual errors, automates real-time submissions, and keeps an audit trail in one place. If you are running payroll across multiple countries as you scale — which many Irish-founded startups do — a platform built to handle multi-country payroll from the outset saves considerable complexity later.
The cost of getting it wrong early
Startups that cut corners on HR and payroll often face the same pattern: a disgruntled employee, a WRC complaint, a Revenue audit, or all three arriving close together. The financial and management time cost of remediation is almost always higher than the cost of doing it properly from the start. Building the right structure when you are small is substantially easier than retrofitting it when you have twenty people and three years of messy records.
---
Run HR and payroll in Ireland with Mellow
Mellow brings HR, payroll and 12 AI agents into one platform — built to handle Ireland properly, with payroll included, from £4 per employee per month. The AI agents don't just answer questions; they generate contracts, run cost estimates and draft letters for you.
[Start a free trial →](/register)