TIAA Secure Income Account API

The TIAA Secure Income Account (SIA) API enables recordkeepers and plan administrators to integrate TIAA's guaranteed lifetime income product into custom target-date model portfolios and managed account solutions. Built using the OpenAPI Specification (OAS) and authenticated via OAuth 2.0 Client Credentials Flow, the SIA API supports account setup, contribution management, and participant income projections for defined contribution plan participants.