1 · CENTRALISE
Every pay element, one place
Stop chasing inputs across countries and spreadsheets. Certino gives every assignee, or every client, one managed record of pay, benefits and expenses.
- Upload by CSV or JSON, or connect by API
- Every element tagged with its source, so you know where each number came from
- Gaps and errors flagged before they reach a calculation or a payslip
- Changes tracked month to month, with a full history
2 · SET POLICY
Set the policy once. Apply it every run.
Assignment policies are where gross-ups go wrong. Certino turns your policy into rules that apply the same way every time, for every assignee.
- Tax equalisation, tax protection, or Local Plus
- Choose which items are grossed up, and whether top-slice or bottom-slice
- Home or host social security, based on the bilateral agreements
- Apply the relevant annualised, cumulative or monthly calculations automatically
3 · CALCULATE
Every number, explained
Certino's calculation logic is deterministic: the same inputs always give the same answer. Every result shows which rule produced it, so reviews, employee queries and audits are quick.
- Hypothetical tax, and full or partial gross-ups
- Federal, state and local income tax, including PAYE
- Home and host social security
- Country logic maintained and updated centrally
- Payroll-ready outputs in seconds
4 · TRUE UP
Year-end true-ups, built in
Compare what was reported through the year with year-end actuals, element by element. Differences are recalculated automatically, with full workings.
- Reconcile against year-end payroll and monthly shadow runs
- See exactly which elements changed, and by how much
- Fits straight into compensation statements and tax return preparation
Use our platform, or build it into yours
Web app. Upload data, review flagged items and download payroll-ready outputs. No integration needed.
API. Send inputs and receive results directly from your own systems, with full technical documentation.
Both come with structured onboarding and ongoing support.
Trusted by global employers and the firms that advise them
We work on a country-by-country basis, so delivering a single report in the Certino system and immediately providing shadow payroll results was very advantageous to us. This combination of benefits makes Certino unique as a shadow payroll provider.
Certino has been a game changer for Cartus and our clients in the mobility space. What was once a complex, highly manual process is now more efficient, with fewer touchpoints and a better overall experience for our clients and their mobile employees.
