- Continuous processing and automation
- Fewer employee queries
- Real-time insight into performance and risk
Enterprise Payroll Software reinvented
ZellisONE Pay integrates payroll, absence processing, financial wellbeing and compensation on structured, AI-ready data, for the UK and Ireland’s most complex organisations.
Reinvent payroll experiences at speed
Pay is the moment your employees judge you most.
ZellisONE Pay turns payroll from a monthly black box into something people understand, trust and can act on.
Routine work runs itself. Decisions happen in the flow of work. Answers arrive the moment they’re needed not after the next cycle closes. And every payroll run lands right first time.
Unlimit payroll performance that delivers
ZellisONE Pay flattens the peaks in the payroll cycle. Exceptions get resolved as they arise. And payroll and reward leaders gain the insight to shape decisions, not just report on them.
More capacity
Experience fewer queries, lower pay-cycle peaks, and less rework with in-flow automation and AI support for administrators.
Higher accuracy
Get payroll right first time, with thousands of embedded validations including automatic National Minimum Wage checks.
Sharper insight
See where payroll pressure is building across the workforce. Then act on it.
Get to value quickly, with confidence
Move beyond payroll efficiency and create measurable business value from day one. ZellisONE Pay reduces operating costs, improves payroll accuracy, and gives teams the visibility to make faster, better-informed decisions.
Lower the cost of payroll operations
Increase the impact of your payroll team
- Less manual administration and exception handling
- Specialists freed for compliance and workforce planning
- More time for strategic reward initiatives
Applied AI built into payroll
Discover structured, AI-ready data and intelligent workflows that automates routine tasks and improves decisions in the flow of work.
Zellis Intelligent Assistant isn't a chatbot bolted onto a payslip, it's AI applied where pay is actually made, checked and approved.
Built on AI-ready data
Achieve perfect payroll with clear, consistent, accurate data. Pay, absence, time and reward data is modelled consistently, while AI works from clean, connected records not inference.
Embedded in daily workflows
Handle exceptions through the cycle not at the cliff edge. Anomalies, variances, starters and leavers, zero or negative pay and unusual movements surface as work happens.
Governed and explainable
Make decisions with confidence so payroll is correct not a suggestion. Variances are translated into plain English for faster root-cause analysis, and every change traceable in a full audit trail.

Real-time payroll, always on
ZellisONE Pay runs payroll as a continuous operation not a monthly event.
- Real-time dashboard – Find status, progress and risk in headline metrics and visual alerts.
- Built-in compliance checks – Experience fewer surprises with UK & Ireland governance.
- AI-powered anomaly detection – Identify unusual or high-risk results early.
- Automated checklist – Guide your teams through every stage, from statutory reporting to backpay and Alabaster ruling.
- Executive dashboards – Discover labour cost movement, compliance trends and operational readiness with ease.
Experience real-time payroll

Payroll software built for complexity, proven at scale
Zellis is the trusted payroll provider for some of the UK and Ireland’s most complex brands across private and public sectors.
Multi-contract employees. Unionised rules. Pensions. Benefits in kind. Salary sacrifice. And industry-specific pay cycles.
ZellisONE Pay adapts without breaking structure to deliver:
- High-volume, high-precision pay runs
- Continuous recalculation of pensions, salary sacrifice and benefits in kind
- Legislative compliance across the UK & Ireland

Payroll that improves financial wellbeing
Financial wellbeing is a core part of employee wellness, and it sits inside ZellisONE Pay, not alongside it.
- Earned Wage Access – Reduce financial stress with early access to earned wages.
- Education & Guidance – Build confidence with personalised support.
- Money Management Tools – Easy-to-use tools for budgeting, saving, and planning.
- Workforce Analytics – Insight to support financial health at scale.
- Boost Your Pay – Exchange earned pay for discounted digital gift cards.

Payroll software that's secure, resilient, and enterprise-ready
Adopt intelligence in payroll without widening your risk.
ZellisONE Pay is built on Microsoft Azure for performance, security and continuity, with real-time failover and immutable backups.
Zellis Intelligent Assistant runs on Zellis’ HCM-specific security model: audit-ready, with built-in controls and deterministic outcomes.
Don’t just take our word for it
Ready to unlimit what's next?
Experience first-hand how ZellisONE Pay reinvents the way payroll runs, at speed, within a flat budget, and on an engine you can trust.
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