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    Home/Glossary/ACAT (Acquisition Category)
    Acquisition Process

    ACAT (Acquisition Category)

    Learn what ACAT (Acquisition Category) means in government contracting. Understand ACAT I, II, and III thresholds to better target your defense opportunities.

    Glossary entryBrowse contracting officersExplore contract categories

    Introduction

    For government contractors, particularly those operating within the defense industrial base, understanding the hierarchy of program management is critical to business development. The ACAT (Acquisition Category) system is the primary mechanism the Department of Defense (DoD) uses to determine the level of oversight, reporting requirements, and decision-making authority for a given program. By leveraging tools like SamSearch, contractors can identify which programs align with their capabilities and understand the regulatory environment governing those specific opportunities.

    Definition

    An Acquisition Category (ACAT) is a classification system defined by DoD Instruction 5000.85 that categorizes defense acquisition programs based on their dollar value, complexity, and level of interest from senior leadership. The primary purpose of this categorization is to determine the appropriate "milestone decision authority" (MDA) and the depth of oversight required to ensure taxpayer funds are managed effectively.

    The ACAT Hierarchy

    Programs are generally divided into the following tiers:

    • ACAT I: These are Major Defense Acquisition Programs (MDAPs). An ACAT I program is defined by high-dollar thresholds—typically exceeding $525 million in Research, Development, Test, and Evaluation (RDT&E) or $3.065 billion in procurement (as adjusted for inflation). These programs receive the highest level of scrutiny from the Office of the Secretary of Defense (OSD).
    • ACAT II: These are major systems that do not meet the ACAT I threshold but are still significant in scope. They are typically managed at the Component level (e.g., Department of the Army or Navy) rather than the OSD level.
    • ACAT III: These programs fall below the ACAT II thresholds. They represent the vast majority of government contracts and are characterized by more streamlined reporting requirements and faster procurement cycles.
    • ACAT IV: Used by some military departments for even smaller, lower-risk programs that require minimal oversight.

    Examples of ACAT in Action

    • ACAT I: The F-35 Lightning II Joint Strike Fighter is the quintessential example of an ACAT I program. Due to its massive budget and strategic importance, it requires constant Congressional reporting and OSD-level milestone reviews.
    • ACAT II: A medium-sized tactical vehicle upgrade program might be classified as ACAT II. While vital to mission readiness, the program scope is limited enough to be managed by a specific service branch.
    • ACAT III: A contract for specialized cybersecurity software or commercial-off-the-shelf (COTS) hardware for a specific base would likely be an ACAT III program, allowing for rapid acquisition through simplified procedures.

    Frequently Asked Questions

    Why does ACAT matter to a small business contractor?

    Knowing the ACAT level helps you understand the sales cycle. ACAT I programs have long, complex procurement cycles with heavy compliance requirements, whereas ACAT III programs often offer faster entry points for small businesses.

    Can a program change its ACAT level?

    Yes. If a program experiences significant cost growth or a change in scope, it may be "re-baselined" and moved to a higher ACAT level, which triggers stricter oversight protocols.

    Where can I find the ACAT level for a specific opportunity?

    While not always explicitly stated in every solicitation, the ACAT level is often reflected in the complexity of the Statement of Work (SOW) and the required reporting deliverables. SamSearch can help you track these programs by identifying the associated Program Executive Offices (PEOs).

    Does ACAT apply to non-DoD agencies?

    No. The ACAT system is specific to the Department of Defense. Civilian agencies like the GSA or DHS use different internal classification systems for their major acquisitions.

    Conclusion

    Mastering the nuances of ACAT is essential for any contractor looking to scale their government business. By understanding whether you are pursuing an ACAT I program or a more agile ACAT III project, you can better prepare your compliance team and tailor your proposal strategy. Use SamSearch to monitor these programs and stay ahead of the procurement lifecycle.

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    RFA (Request for Application)

    Learn what an RFA (Request for Application) is in government contracting. Understand the differences between RFAs and RFPs, and how to secure grant funding.

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    Learn about the Source Selection Authority (SSA) in government contracting. Understand how the SSA makes best-value decisions under FAR 15.303.

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