Certino

Certino is a cloud-based platform for accurate expatriate and shadow payroll calculations. We sit at the calculation layer, where payroll risk is actually created. Our platform models tax, social security and gross-up logic across countries, worker types and compensation structures, including shadow payroll, hypo tax, partial gross-ups and home-country social security. Delivered in seconds via web app or API, Certino helps organisations replace spreadsheets, manual workarounds and fragmented logic with a single, consistent source of calculation truth. This gives payroll, tax and mobility teams confidence that what runs through payroll is compliant before it runs, not after. Certino integrates easily into existing payroll and mobility ecosystems and is trusted by organisations and service providers managing complex cross-border pay.