Mellow vs HiBob: UK payroll without the enterprise price tag
HiBob (Bob) is an Israeli HR platform that has gained strong traction in the UK tech sector, particularly among scale-ups with 200 to 2,000 employees. It has a modern interface, strong culture and engagement features, and a global approach. If you are evaluating HiBob against Mellow, the comparison is not straightforward — the two products have somewhat different target audiences.
HiBob's strengths
HiBob has genuine strengths: a beautiful interface, strong engagement and recognition features, equity management that matters for VC-backed businesses, and a global HRIS that works for businesses hiring across multiple countries. If your workforce spans the US, Israel, UK, and Germany, HiBob handles that context well.
The UK payroll question
HiBob runs native UK payroll — it acquired Pento and brought that engine in-house — so the difference here is not capability but packaging and pricing. HiBob is quote-only and prices payroll as part of a negotiated mid-market contract. With Mellow, UK PAYE payroll is included in the published Professional tier price, with RTI submissions, SSP, SMP, student loan plans, and salary sacrifice handled within the same HR platform and the same published figure.
For a business that is UK-centric — hiring primarily in the UK, subject to UK employment law, needing ERA 2025 compliance — knowing the all-in cost up front, with payroll already in it, is part of the value.
Specialist agents vs a general copilot
HiBob ships Bob AI, a Manager Co-Pilot, and a set of assistive agents across the product. Mellow takes a different angle: specialist domain agents — including a People Coach and ERA 2025-grounded compliance assistants — that reason in the context of UK employment law and your own workforce data, rather than a general-purpose copilot. For UK employers, that domain depth is the differentiator.
Pricing
HiBob is positioned as a mid-market platform and priced accordingly, on a quote-only basis. For businesses of 50 to 250 employees, HiBob's pricing is typically significantly above Mellow's published Professional tier. The pricing reflects the platform's ambition and investor backing; for UK-focused SMEs, transparent all-in pricing with payroll included is often the better fit.
ERA 2025
HiBob is a global HRIS first. ERA 2025 compliance — tracking the Employment Rights Act 2025 changes, ACAS Code integration, right to work management, DBS tracking — sits within its broader multi-country model rather than being the founding assumption. Mellow is built around UK employment law, so that compliance depth is structural.
The honest summary
For a UK tech scale-up with global hiring ambitions and equity management needs, HiBob is worth evaluating seriously. For a UK business of 50 to 500 employees whose workforce is primarily UK-based and whose compliance requirements are primarily UK statutory, Mellow offers comparable HR depth with UK payroll in the published price, specialist UK-focused agents, and ERA 2025 built into the core — at a meaningfully lower and more transparent cost.
See our best HR software for UK SMEs guide for the broader market, and HR software for 100-250 employees for the specific considerations at that scale.
[Compare Mellow pricing →](https://mellowhr.com/pricing)