FAR and DFARS › FAR Part 16: Types of Contracts › Subpart 16.6
FAR 16.603-1 Description.
The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.
The text
A letter contract is a written preliminary contractual instrument that authorizes the contractor to begin immediately manufacturing supplies or performing services.
← 16.603 Letter contracts. · 16.603-2 Application. →
Rule changes for FAR Part 16
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 16, 17, and 35 ↗ · proposed 2026-09-18 · comments due 2026-10-19
- Federal Acquisition Regulation: Inflation Adjustment of Acquisition-Related Thresholds ↗ · final rule 2025-08-27 · effective 2025-10-01
- Federal Acquisition Regulation: Protests of Orders Under Certain Multiple-Award Contracts ↗ · proposed 2025-06-12
- Federal Acquisition Regulation: Small Business Participation on Certain Multiple-Award Contracts ↗ · proposed 2025-06-12
- Federal Acquisition Regulation: Protests of Orders Under Certain Multiple-Award Contracts ↗ · proposed 2025-01-15 · comments due 2025-03-17
- Federal Acquisition Regulation: Small Business Participation on Certain Multiple-Award Contracts ↗ · proposed 2025-01-15 · comments due 2025-03-17
- Federal Acquisition Regulation: Preventing Organizational Conflicts of Interest in Federal Acquisition ↗ · proposed 2025-01-15 · comments due 2025-03-17
- Federal Acquisition Regulation: Rerepresentation of Size and Socioeconomic Status ↗ · final rule 2025-01-03 · effective 2025-01-17
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.