Modification

In federal procurement, a modification refers to any written alteration to a contract after its initial award. Modifications can adjust contract value, delivery schedules, requirements, funding, or administrative details. They may be bilateral (agreed to by both parties) or unilateral (issued by the government alone, under certain clauses). Modifications are tracked and reported as distinct actions in federal contract data systems.

Understanding modifications is critical for accurate contract analysis, as they often represent changes in funding, scope, or performance requirements. Modifications can significantly impact the total value and lifecycle of a contract, affecting obligations, competition, and vendor performance metrics. Analysts must account for modifications to avoid misinterpreting contract size, duration, or compliance history.

In FPDS, each modification is recorded as a separate transaction linked to the original contract award, typically identified by an 'Action Type' code such as 'B' (modification). Modifications are visible in contract history and are essential for tracking cumulative obligations, changes in contract terms, and administrative actions over time.

A common misunderstanding is assuming the initial contract award value reflects the total contract size, without accounting for subsequent modifications. Users may also confuse modifications with entirely new contracts or task orders.

If an agency increases the funding on an IT services contract to add new deliverables, this change is processed as a modification. The modification will appear in FPDS as a new record tied to the original contract, showing the updated total obligated amount.

• FAR Part 43 — Contract Modifications
• FAR 4.6 — Contract Reporting