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Effective version 2026-09-09

Service Providers and Subprocessors

The production service categories that may receive data to operate ZentroPayroll, subject to configuration and client-authorized features.

Pre-production legal draftThis document must be approved by qualified counsel before live payroll, paid subscriptions, or public commercial launch. Production readiness remains blocked until that approval is recorded.

Core production providers

Microsoft Corporation — AzureApplication hosting, managed PostgreSQL, container registry, managed identities, secrets, networking, monitoring, and backups. Primary production region is configured in the United States.
Amazon Web Services, Inc. — Amazon SESTransactional account, payroll, security, and support email delivery when the ZentroPayroll SES configuration is enabled.
Stripe, Inc.ZentroPayroll SaaS subscription checkout, recurring billing, invoices, payment methods, and billing portal. Stripe may act under its own legal role for payment services.
Check Technologies, Inc. and applicable affiliatesPayroll infrastructure, hosted onboarding, calculations, payments, tax services, payroll documents, and related regulated services when a client activates payroll. Check may act under independent legal obligations for financial and payroll services.

Optional destinations

ZentroBooks receives tenant-scoped payroll journal information only when an authorized customer connects the integration, approves account mappings, and enables posting. Other optional programs are not enabled merely because they appear in a provider catalog; their data flows require separate configuration and authorization.

Review and change notice

This register is reviewed before production activation and when a material provider changes. Contract customers will receive notice of a new subprocessor through the channel and objection period stated in their signed Data Processing Addendum. A provider’s own privacy notice and service terms may also apply where it acts independently.