The Treasury Enterprise Architecture Framework (TEAF) was an enterprise architecture framework developed by the United States Department of the Treasury and published in July 2000. Based on the Zachman Framework, it provided a structured approach to organize and align the Treasury’s information systems with its business objectives. In May 2012, TEAF was deprecated and subsumed by the broader Federal Enterprise Architecture (FEA) policy, as outlined in the "Common Approach to Federal Enterprise Architecture." This shift reflected a federal move toward standardized, interoperable EA frameworks to enhance efficiency and reduce redundancy across agencies, rendering agency-specific frameworks like TEAF obsolete.

The Treasury Enterprise Architecture Framework (TEAF) was an architectural framework that supported the Treasury's business processes in terms of products. This framework guided the development and redesign of the business processes for various bureaus to meet the requirements of recent legislation in a rapidly changing technology environment. The TEAF prescribed architectural views and delineated a set of notional products to portray these views.

The TEAF provided:

The TEAF's functional, information and organizational architecture views collectively modeled the organization's processes, procedures, and business operations. By grounding the architecture in the business of the organization, the TEAF defined the core business procedures and enterprise processes. Through its explicit models, a TEAF-based architecture enabled the identification and reasoning of enterprise- and system-level concerns and investment decisions.

The Treasury Enterprise Architecture Framework (TEAF) is derived from earlier treasury models, such as the US Treasury model (TISAF) released 1997, and the Federal Enterprise Architecture Framework (FEAF), released in 1999. The first version of the TEAF was released July 2000.

In the new millennium the Treasury Enterprise Architecture Framework (TEAF) has developed into the Treasury Enterprise Architecture (TEA), which aims to establish a roadmap for the modernization and optimization of the U.S. Treasury Department's business processes and IT environment. The Treasury Enterprise Architecture will provide a framework to guide IT investment planning, streamline systems, and ensure that IT programs align with business requirements and strategic goals.

Effective management and strategic decision making, especially for information technology (IT) investments, require an integrated view of the enterprise—understanding the interrelationships among the business organizations, their operational processes, and the information systems that support them. An Enterprise Architecture formalizes the identification, documentation, and management of these interrelationships, and supports the management and decision processes. The Enterprise Architecture provides substantial support for evolution of an enterprise as it anticipates and responds to the changing needs of its customers and constituents. The Enterprise Architecture is a vital part of the enterprise's decision-making process, and will evolve along with the enterprise's mission.

The TEAF has been designed to help both the bureaus and the department develop and maintain their Enterprise Architectures. The TEAF aims to establish a common Enterprise Architecture structure, consistent practices, and common terminology; and to institutionalize Enterprise Architecture governance across the department. This architectural consistency will facilitate integration, information sharing, and exploitation of common requirements across Treasury.