NAICS 2022 industry USA Verified: Census NAICS 2022 · 2023-03-17
56221
NAICS 56221 — Waste Treatment and Disposal
Waste Treatment and Disposal
NAICS 56221 is the NAICS industry code for waste treatment and disposal establishments in the United States. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.
Official data
| Feature | Description |
|---|---|
| Official name | North American Industry Classification System (NAICS) 2022 |
| Issuing authority | U.S. Census Bureau with OMB, Statistics Canada, and INEGI |
| Tax authority | Internal Revenue Service (IRS) |
| Purpose | Statistical business classification and federal contracting (SAM.gov, SBA standards) |
| Used in | SAM.gov registration, SBA size determinations, IRS tax classification, SEC EDGAR (via SIC crosswalk) |
| Active since | 2022 (current edition) |
| Hierarchy level | Sector (2-digit) |
| Source | https://www.census.gov/naics/ |
When do you need NAICS 56221?
1 Registering on SAM.gov for federal contracting — enter NAICS 56221 as your primary industry code.
2 Checking whether the SBA size standard for waste treatment and disposal applies to your business for set-aside contracts or loans.
3 Classifying your main line of business when applying for grants, contracts, loans, or market research surveys.
4 Comparing this code against legacy NAICS 2017 records or related SIC codes for historical data alignment.
NAICS hierarchy path
Trace the classification from the broadest sector down to this national industry code.
Cross-references & crosswalks
How to register a waste treatment and disposal business in the US
1
Verify NAICS classification
Confirm that Waste Treatment and Disposal describes your professional service activity.
2
Register for an EIN (Form SS-4)
Required for most professional service entities operating as LLC or corporation.
IRS EIN application3
Obtain state professional license
Many professional services (legal, accounting, architecture, engineering) require state board licensing — check your specific profession.
4
Register for SAM.gov (if pursuing government contracts)
Professional service firms bidding on federal contracts must maintain an active SAM.gov registration.
US Tax Forms & Registration
| Form Name | Who Files It | Frequency |
|---|---|---|
| Profit or Loss from Business | ||
| U.S. Return of Partnership Income | ||
| U.S. Corporation Income Tax Return | ||
| U.S. Income Tax Return for an S Corporation | ||
| Self-Employment Tax | ||
| Estimated Tax for Individuals | ||
| Application for Employer Identification Number (EIN) | ||
| Entity Classification Election | ||
| Nonemployee Compensation | ||
| Employer's Annual Federal Unemployment (FUTA) Tax Return | ||
| Employer's Quarterly Federal Tax Return | ||
| Request for Taxpayer Identification Number and Certification |
Entity Comparison
$
No federal sales tax in the United States. Sales tax is imposed at state and local levels, ranging from 0% to 10.25%. Economic nexus thresholds (following South Dakota v. Wayfair) require out-of-state sellers to collect sales tax once they exceed a state's revenue or transaction threshold, typically $100,000 in sales or 200 transactions per year.
No state income tax: Alaska (AK), Florida (FL), Nevada (NV), New Hampshire (NH), South Dakota (SD), Tennessee (TN), Texas (TX), Washington (WA), Wyoming (WY)
Who uses this code?
Landscape Architect
Designs outdoor spaces, parks, and residential landscapes, producing site plans and planting specifications.
Licenses
- ●State landscape architect license (LARE)
- ●Professional liability insurance
Tax Forms
- ●Schedule C or 1120-S (PLLC)
- ●Schedule SE
Management Consultant
Advises businesses on strategy, operations, organizational design, and process improvement as an independent.
Licenses
- ●Business license
- ●E&O insurance
Tax Forms
- ●Schedule C (Form 1040)
- ●Schedule SE (Form 1040)
- ●Form 1040-ES
HR Consultant
Provides outsourced human resources services including handbook development, compliance, and employee relations.
Licenses
- ●Business license
- ●SHRM/HRCI certification
- ●E&O insurance
Tax Forms
- ●Schedule C (Form 1040)
- ●Schedule SE (Form 1040)
Public Relations Agency Owner
Runs a boutique PR firm securing media coverage, managing crisis communications, and building brand reputation.
Licenses
- ●Business license
- ●Client representation agreements
Tax Forms
- ●Form 1065 or 1120-S
- ●Form 940 (FUTA)
- ●Form 941
Child codes (4)
Frequently asked questions
- What is NAICS 56221?
- NAICS 56221 is the North American Industry Classification System code for Waste Treatment and Disposal. It classifies this business activity for statistical, regulatory, and government procurement purposes. Federal agencies use NAICS codes to collect and publish data about the US economy, determine SBA size standards, and set aside contracts for small businesses.
- What licenses and permits does a Waste Treatment and Disposal need?
- A Waste Treatment and Disposal typically needs a local business license, a federal EIN from the IRS, and industry-specific permits depending on the sector. Check with your city or county clerk for a general business license, your state's professional or industry licensing board for any required occupational licenses, and your state's tax authority for a sales tax permit if you sell taxable goods or services.
- How do I register a Waste Treatment and Disposal business in the United States?
- To register a Waste Treatment and Disposal business, first choose your legal structure: sole proprietorship (simplest, uses SSN), LLC (personal liability protection, files with your Secretary of State), or corporation (Form 1120 or 1120-S). Register your business name (DBA) with your county if operating under a trade name. Obtain an EIN from the IRS at irs.gov/ein. Register with your state revenue department for any applicable taxes.
- What tax forms does a Waste Treatment and Disposal file with the IRS?
- Tax forms depend on your entity type. A sole proprietor files Schedule C with Form 1040 and Schedule SE for self-employment tax (15.3%). An LLC taxed as a partnership files Form 1065 with Schedule K-1s. A C-Corporation files Form 1120 (21% flat rate). An S-Corporation files Form 1120-S. All businesses paying employees file Form 940 (FUTA) annually and Form 941 quarterly. Estimated tax payments are made via Form 1040-ES four times per year.
- Is Waste Treatment and Disposal the right NAICS code for my business?
- Your NAICS code should reflect your primary business activity — the one generating the most revenue or value. If Waste Treatment and Disposal describes your main line of business, NAICS 56221 is likely correct. If you have multiple distinct activities, you may need separate codes for statistical reporting. For federal contracting, your SAM.gov registration should use the code that best matches the work you perform. Review the official NAICS 56221 description and exclusions to confirm it fits your operations.
- Does a Waste Treatment and Disposal need a professional license or state board registration?
- Many professional services — including lawyers, architects, engineers, accountants (CPA), real estate agents, insurance producers, landscape architects, and surveyors — require state licensing with education, exam, experience requirements, and ongoing continuing education. Operating without a required license can result in cease-and-desist orders, fines, and criminal charges. Even unlicensed professions should check for 'right to practice' laws. For example, some states restrict 'interior designer' title to licensed professionals.
- Can a Waste Treatment and Disposal form an LLC, or does it require a Professional entity (PC/PLLC)?
- Licensed professionals in most states cannot form a regular LLC and must instead form a Professional Corporation (PC), Professional LLC (PLLC), or Registered Limited Liability Partnership (LLP). This ensures personal liability for professional malpractice remains with the individual professional while protecting against the entity's business debts. All owners/members must hold the relevant professional license. Professional entities must file articles with both the Secretary of State and the licensing board, and entity names must include 'Professional,' 'PC,' or 'PLLC.'
- Does a Waste Treatment and Disposal need E&O (Errors & Omissions) insurance?
- Professional liability / E&O insurance protects a Waste Treatment and Disposal against claims of negligence, errors, or failure to perform professional duties. Many licensing boards require E&O as a condition of licensure (particularly for real estate, insurance, and certain design professionals). Even when not legally required, it is standard practice — commercial general liability policies exclude professional services. Policy limits typically range from $1M-$5M. Claims-made policies are most common, requiring 'tail' coverage when you stop practicing.
- What engagement letter or contract does a Waste Treatment and Disposal need to use with clients?
- Every professional service engagement should be documented in a written letter of engagement or professional services agreement. It should include: scope of services (and what is excluded), fee structure (hourly, flat, contingent — and whether contingent fees are allowed by your profession's ethics rules), payment terms, limitation of liability clause (where permitted), dispute resolution method (mediation/arbitration), and termination conditions. State bar associations and professional societies typically publish model engagement letters. Oral agreements create significant liability risk.