---
kind: "unit"
title: "13"
title_heading: "Business Credit and Assistance"
key: "chI/part121"
level: "part"
label: "Part 121"
heading: "Small Business Size Regulations"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/13/chI-part121"
sections_count: 77
---

# Part 121 — Small Business Size Regulations

Title 13 C.F.R. — Business Credit and Assistance › Chapter I — Small Business Administration

## Contents

- [Subpart A — Size Eligibility Provisions and Standards](/cfr/13/chI-part121-subpartA.md)
- [Subpart B — Other Applicable Provisions](/cfr/13/chI-part121-subpartB.md)