Compliance Guides

Detailed manuals, regulatory frameworks, and worked examples for corporate identifiers and classification codes.

NAICS Codes Explained: Structure, Hierarchy, and Purpose

A comprehensive foundational overview explaining what NAICS codes are, how their hierarchy works, and how federal agencies use them.

Deep-Dive Topics

How to Find and Verify Your Business NAICS Code A step-by-step practical guide to looking up and selecting the correct NAICS code for an organization using self-classification rules. NAICS 2017 to 2022 Updates: Key Changes, Splits, and Mergers An analytical breakdown of the major changes introduced in the 2022 NAICS revision, detailing merged codes and retired classifications. NAICS vs. SIC vs. ISIC: Understanding Industrial Classification Systems A comparative analysis explaining the relationship, scope, and differences between NAICS, legacy SIC, and the international UN ISIC standard. How NAICS Codes Affect Your Business Tax Filings and SBA Status Guides small businesses on how their NAICS classification dictates IRS business activity coding and federal contracting programs. Are NAICS Codes State-Specific? National vs. State Classifications Explains why NAICS is a federal standard, not state-issued, and how businesses lookup and report their codes to state departments. Do I Need a NAICS Code for My LLC? Registration and Compliance Requirements Explains when state LLC registrations, business bank accounts, and tax returns require a valid NAICS industry code.

SIC Codes Explained: History, Structure, and Concordances

The complete history and structural layout of the 1987 Standard Industrial Classification (SIC) system, including its legacy role.

Deep-Dive Topics

SBA Size Standards: A Complete Guide to Small Business Compliance

An authoritative guide to the Small Business Administration (SBA) size standard table, outlining its legal role in government contracting.

Deep-Dive Topics

Receipts-Based vs. Employee-Based SBA Size Standards Explained A breakdown of the two primary measurement bases used by the SBA, explaining when employee counts vs. revenue averages apply. How to Calculate Average Annual Receipts for SBA Certification Instructions on calculating annual receipts according to SBA regulations, detailing the 3-year and 5-year average calculation rules. Understanding SBA Affiliation Rules and How They Impact Business Size Explains how shared ownership, management, or contracts create affiliation, requiring businesses to merge receipts for size calculations. SBA Size Protests: Eligibility, Filing, and Appeals Processes A compliance overview detailing how competitors challenge small business self-certifications and how to defend against size protests. Are SBA Size Standards Different by State? Federal Uniformity Rules Explains the nationwide uniformity of Small Business Administration (SBA) size standard limits across all 50 states.

U.S. Federal Contracting Identifiers: DUNS, UEI, and CAGE Guide

A comprehensive reference detailing the required structural identifiers needed to transact with the U.S. federal government.

Legal Entity Identifier (LEI): Global Financial Identity Standards

A comprehensive guide on the international Legal Entity Identifier (LEI) system and its regulatory role in global finance.