Topia and Certino Partner to Eliminate Guesswork from Global Payroll

London, UK — June 16, 2026 — Topia, the global talent mobility platform, has partnered with Certino, the specialist provider of expatriate payroll calculation infrastructure, to address one of HR's most persistent operational failures: paying internationally mobile employees accurately and compliantly.

Certino's payroll-ready gross-up and shadow payroll calculations are now embedded directly within Topia Horizon, giving organizations a single, connected workflow for cross-border compensation and compliance across more than 90 countries, replacing the disconnected systems, multiple providers and spreadsheets that have long defined the space.

As international workforces grow, regulatory scrutiny intensifies and the pressure on HR, mobility, payroll and tax teams shows no sign of easing. Demand for international talent is rising, yet global compensation remains fragmented, error-prone and heavily manual, a liability that organizations can no longer afford to ignore. Topia Horizon's agentic AI automates risk assessments across tax, immigration, social security, and permanent establishment before every trip and remote request. This partnership extends that intelligence directly into payroll execution.

"International talent mobility has become a strategic priority but the operational processes underpinning it have not kept pace. Too many organizations are still managing critical payroll and tax calculations through manual processes that create unnecessary risk and cost. Topia Horizon's intelligence closes that gap, surfaces risk, generates policy-linked cost simulations, and now connects directly to payroll-ready calculations through Certino. Partnering with Certino means organizations can run a more accurate, connected and scalable global compensation operation."

By combining Topia Horizon with Certino's payroll calculation infrastructure, the partnership enables organizations to reduce operational complexity, improve compliance confidence and eliminate the manual handoffs that create risk at month-end. Payroll instruction outputs are supported across all 90+ countries.

"Gross-up calculations and shadow payroll obligations have always required significant manual effort and multiple handoffs. The consequences of getting them wrong are serious. Certino was built to standardise and automate these calculations, delivering consistent, payroll-ready outcomes at scale. Embedding that capability inside Topia Horizon brings specialist expatriate tax calculation directly into the operational workflow, enabling global mobility teams to execute with greater control, transparency and confidence."

The integration is designed to serve both enterprise HR and mobility teams managing cross-border employees directly, and the mobility providers and managed service operators delivering global compensation programmes on behalf of clients, giving both a more operationally consistent approach to managing payroll obligations at scale.

The integrated capability is available to all organizations using Topia Horizon.