HR Software for Accountancy Firms

Accountancy firms have a particular relationship with HR software: they often set it up for clients, advise on payroll compliance, and understand the underlying HMRC requirements better than most. They also, paradoxically, sometimes run their own HR from a spreadsheet.

For accountancy firms running their own HR, the requirement is the same as any professional services business: employment contracts, leave management, performance reviews, payroll. The difference is that the partners and managers know exactly what the compliance requirements are — which means they notice when the system is not meeting them.

Mellow's payroll engine meets the standards that accountancy professionals expect. PAYE calculations, NI, pension auto-enrolment, RTI, and statutory payments are all handled correctly. The tax code and NI category logic is current for 2025/26. For accounting firms that currently run payroll for their own staff through their client payroll software — a common workaround — Mellow provides a cleaner separation. For firms that advise clients on HR software, Mellow has an accountant referral programme worth enquiring about.