Connect to over 120M payroll and HRIS accounts, and make it easy for your customers to verify income and employment, switch direct deposit, or connect HR admin accounts to your app.
coverage of Fortune 1000 companies
supported payroll providers
We support the 48 most actively used payroll providers — offering 85% coverage of the US workforce.
Citadel API handles security questions and 2FA right in the app, connecting to their payroll data in under 15 seconds.
Citadel API takes the final steps to access, organize, and deliver the data to you via API or directly to your Citadel API dashboard.
We agonize over the right abstractions so your teams don’t need to stitch together disparate systems or spend months integrating payments functionality.
Our documentation, like our API, is built by developers, for developers
Sign up for the Citadel Dashboard and get instant access to API keys.
Citadel is SOC 2 Type 2 compliant. We’re currently undergoing ISO 27001 and D1C certifications.
We use Vanta, the leading SOC 2 Type 2 continuous monitoring software to stay compliant and secure.
Data transmitted is kept safe using SSL standards. We use 256-bit AES encryption at rest and TLS 1.2+ in transit.
Verify income and employment to make more confident decisions
Verify employment history and make informed hiring decisions
Enable users to instantly switch direct deposit accounts
Access the company HR directory and onboard employees faster
Get reports of a company's payroll history for your analysis
Create an account instantly and start building. Or contact us directly for a custom package that works for your business.