It depends entirely on which certifying body you choose. ASQ requires at least one completed, real-world project for Black Belt certification. ASQ has no project requirement for Yellow Belt, Green Belt, or Master Black Belt candidates. IASSC requires no project completion at any belt level. It tests knowledge only through a closed-book proctored exam. Your choice of certifying body determines whether a project is mandatory.
Table of contents
Key Takeaways
- Project completion depends on the certifying body: ASQ requires it for Black Belt, while IASSC does not require it at any level.
- ASQ mandates one completed project with documentation for Black Belt certification but does not require projects for Yellow and Green Belts.
- IASSC certifies knowledge through exams only, offering flexibility for those who cannot complete projects before certification.
- Consider your career stage and industry requirements when choosing between ASQ and IASSC certification paths.
Why This Question Matters?
Many professionals have strong Six Sigma knowledge. But they cannot complete a project before pursuing certification.
They may work in industries where project scope is restricted. They may be in early-career roles without the authority to run independent projects. Or they may be transitioning from another field and need the credential first.
The answer to this question changes which path is open to you. Get it from the official source.
This post covers the exact requirements from ASQ and IASSC only. All rules come directly from those bodies’ published pages.
The Core Rule: It Depends on the Certifying Body
There is no single universal rule for Six Sigma certification. Each certifying body sets its own requirements.
The two most widely recognized bodies are ASQ and IASSC.
ASQ is experience-based at the Black Belt level. It requires documented proof that you have completed at least one real Six Sigma project with measurable financial impact.
IASSC is knowledge-based at every level. It requires no project experience, no work experience, and no training from any specific provider. You pass a closed-book exam. That is the requirement.
Both approaches lead to respected, globally recognized credentials. Your situation determines which path is right for you.
Public, Onsite, Virtual, and Online Six Sigma Certification Training!
- We are accredited by the IASSC.
- Live Public Training at 52 Sites.
- Live Virtual Training.
- Onsite Training (at your organization).
- Interactive Online (self-paced) training,
ASQ Project Requirements: Belt by Belt
ASQ Yellow Belt (CSSYB): No Project Required
ASQ states clearly on its CSSYB certification page: “The Certified Six Sigma Yellow Belt has no experience or education requirements.”
No project is required. No work experience is required. Yellow Belt at ASQ is open to anyone.
ASQ Green Belt (CSSGB): No Project Required
ASQ’s Green Belt certification requires three years of relevant work experience. But ASQ does not require a completed project for Green Belt.
The ASQ CSSGB page lists the eligibility requirement as: “Years of on-the-job experience in one or more of the areas of the Certified Six Sigma Green Belt Body of Knowledge.” (Source: ASQ CSSGB certification page, asq.org)
Work experience is required. A signed project affidavit is not.
Also Read: How SSDSI Helps Students with Six Sigma Yellow Belt Certification?
ASQ Black Belt (CSSBB): Project IS Required
The ASQ Black Belt has a firm project requirement. There are no exceptions.
ASQ’s official CSSBB certification page states: “Six Sigma Black Belt certification requires that you complete at least one Six Sigma project and submit a project affidavit.” (Source: ASQ CSSBB certification page, asq.org)
ASQ’s Certification FAQ is equally direct: “A Six Sigma Black Belt project is required. If you have not completed a project you are not eligible to sit for the exam.” (Source: ASQ Certification FAQ, asq.org)
The specific project requirements are:
- At least one completed project with a signed affidavit, plus three years of relevant work experience.
- Or two completed projects with signed affidavits, if you have less than three years of relevant experience.
Both paths require at least one real project. There is no route to the ASQ Black Belt without a completed project.
ASQ Master Black Belt (CMBB): No Project Affidavit Required
The ASQ Master Black Belt has no project affidavit requirement in the same format as Black Belt.
However, the MBB application requires evidence of advanced experience, a portfolio review, and demonstrated leadership in mentoring other belts. Candidates should check ASQ’s current MBB eligibility page directly before applying, as requirements at this level are more complex than lower belts.
What Makes a Valid ASQ Black Belt Project?
ASQ defines the standard for an acceptable project clearly on its official FAQ page.
An acceptable ASQ Black Belt project must:
- Use a Six Sigma approach and appropriate DMAIC tools
- Apply to a real operating business or company
- Produce breakthrough performance and real financial benefit
- Include measured before-and-after cost benefits
- Have a project champion who signs the affidavit
ASQ defines a Black Belt project this way:
“The Six Sigma Black Belt project is one that uses appropriate tools within a Six Sigma approach to produce breakthrough performance and real financial benefit to an operating business or company.” (Source: ASQ Certification FAQ, asq.org)
ASQ also lists project types that are not acceptable:
- Prepackaged or classroom exercises that are mock or simulated
- Projects completed at an organization that no longer exists
- Basic product improvements not tied to process measurements
- Software maintenance or remediation without detailed process measurements
- Any project without measured before-and-after cost benefits
These rules are strict. ASQ rejects applications that include ineligible projects.
Also Read: How SSDSI Guides Your Six Sigma Green Belt Certification Journey?
The Affidavit: How ASQ Verifies Project Completion
When you submit an ASQ Black Belt application, you must include a completed and signed project affidavit.
The affidavit is a formal verification document. It must be completed by your project champion. That is typically a senior manager or executive at your company who can verify the project contents and financial impact.
The affidavit requires the following:
- The applicant’s name and ASQ member number
- The official project title as listed on the project charter
- A brief description of the business problem the project addressed
- The project start and completion dates
- A description of the Six Sigma tools used and how you applied them
- A statement of the benefits achieved, including financial savings, cycle-time reduction, or other measurable results
ASQ is specific about financial impact. The affidavit must include measured before-and-after benefits. A project without documented financial results does not meet the standard.
The signed affidavit must reach ASQ within one week of your application submission. If it does not arrive in time, ASQ places your application on hold. If you miss the deadline entirely, ASQ cancels your application. You receive a partial refund, minus the application fee.
ASQ states: “It is your responsibility to have your project champion complete and sign the project affidavit. Affidavits will not be accepted if they are not signed by a project champion.” (Source: ASQ Certification FAQ, asq.org)
Can You Use an Older Project?
Yes. ASQ accepts completed projects regardless of how old they are.
ASQ states: “Can I submit a project I completed more than two years ago? Yes, as long as the project utilized the Six Sigma tools and methodologies, it is acceptable.” (Source: ASQ Certification FAQ, asq.org)
Age is not the issue. The project must have followed a Six Sigma approach. It must have produced measurable results. And the champion who signed the affidavit must be contactable to verify the contents.
IASSC: No Project Required at Any Belt Level
IASSC takes a fundamentally different approach to certification.
IASSC states on its official position page:
“The ICBB, ICGB and ICYB exams require no prerequisites, no specific training from one provider or another, no specific type of training method and no ‘proof’ of project work.” (Source: IASSC Position on Lean Six Sigma Industry, iassc.org)
This applies at every belt level.
The IASSC Black Belt page confirms: “There are no prerequisites required in order to sit for the IASSC Certified Lean Six Sigma Black Belt Exam.” (Source: IASSC Black Belt certification page, iassc.org)
The IASSC Green Belt page confirms: “There are no prerequisites required in order to sit for the IASSC Certified Lean Six Sigma Green Belt Exam.” (Source: IASSC Green Belt certification page, iassc.org)
The IASSC Yellow Belt page confirms: “There are no prerequisites required in order to sit for the IASSC Certified Lean Six Sigma Yellow Belt Exam.” (Source: IASSC Yellow Belt certification page, iassc.org)
No project. No work experience. No mandatory training provider. You sit for the exam. You score 70% or higher. You earn the certification.
Why IASSC Does Not Require Projects
IASSC explains its position directly on its website.
The organization argues that knowledge and the ability to apply knowledge are not the same thing. Testing project completion proves application ability. Testing the body of knowledge proves knowledge.
IASSC states:
“It is imperative that a separation be made between one’s ability to apply the Lean Six Sigma Methodology to a project and one’s ability to demonstrate they possess the knowledge requisite of the standard for what is considered to be a qualified Lean Six Sigma Black Belt, Green Belt or Yellow Belt.” (Source: IASSC Position on Lean Six Sigma Industry, iassc.org)
IASSC uses psychometrically validated, closed-book exams to measure knowledge. The exams are developed using the IASSC Lean Six Sigma Body of Knowledge. The body of knowledge represents what the industry considers the minimum competency for each belt level.
IASSC also notes that training and project experience are recommended, even though not required:
“For those who wish to sit for the exam it is recommended, but not required, that Lean Six Sigma training is obtained through a qualified institution, Lean Six Sigma trainer or corporate program. It is also recommended, although not required, that those sitting for the exam have some degree of real-world Lean Six Sigma work experience and project application experience.” (Source: IASSC Black Belt certification page, iassc.org)
IASSC recommends experience. It does not mandate it. That distinction matters.
Choosing the Right Path: ASQ or IASSC?
The right choice depends on your situation right now.
Choose ASQ Black Belt if:
- You have completed at least one real Six Sigma project with documented financial results
- You have three years of relevant full-time, paid work experience
- Your employer or industry specifically recognizes ASQ credentials
- You want a project-verified credential that signals hands-on competence
Choose IASSC if:
- You do not yet have a completed project to submit
- You are new to Six Sigma and want to earn credentials before leading projects
- You work in an organization where running an independent project is not currently possible
- You want to test your knowledge through a rigorous closed-book exam without project prerequisites
- You want a globally portable credential recognized in 165 countries
Neither path is superior in all situations. ASQ demonstrates both knowledge and applied experience. IASSC demonstrates deep knowledge through a rigorous exam. Both credentials are respected and verifiable.
Check what your employer or industry requires before you choose.
The following table summarizes the project requirements at each level for both bodies:
| Belt Level | ASQ Project Required | IASSC Project Required |
| Yellow Belt | No | No |
| Green Belt | No | No |
| Black Belt | Yes — mandatory | No |
| Master Black Belt | No affidavit required (portfolio review applies) | Not offered |
FAQ: Is Project Completion Mandatory for Six Sigma Certification?
Does ASQ require a completed project for Black Belt certification?
Yes. ASQ states directly: “A Six Sigma Black Belt project is required. If you have not completed a project you are not eligible to sit for the exam.” Candidates must submit a signed project affidavit showing at least one completed project with documented financial impact. The affidavit must be signed by a project champion who can verify the contents.
Does ASQ require a project for Green Belt certification?
No. ASQ’s Green Belt certification requires three years of relevant work experience but does not require a completed project affidavit. The project requirement applies only to the Black Belt level.
Does IASSC require a completed project at any belt level?
No. IASSC states on its official position page: “The ICBB, ICGB and ICYB exams require no prerequisites… and no ‘proof’ of project work.” IASSC certifies knowledge through a closed-book proctored exam. No project completion is required at Yellow Belt, Green Belt, or Black Belt level.
What is an ASQ project affidavit?
An ASQ project affidavit is a formal verification form you submit with your Black Belt application. It documents the project title, problem addressed, business objective, tools used, project dates, and financial benefits achieved. Your project champion, a senior manager or executive, must sign it. ASQ will not accept unsigned affidavits. The signed affidavit must reach ASQ within one week of your application.
Can I use a project I completed years ago for ASQ Black Belt?
Yes. ASQ confirms: “Can I submit a project I completed more than two years ago? Yes, as long as the project utilized the Six Sigma tools and methodologies, it is acceptable.” The project must have followed a Six Sigma methodology and produced measurable, documented results.
What makes a project ineligible for the ASQ Black Belt affidavit?
ASQ lists the following as unacceptable: prepackaged or simulated classroom exercises, projects with no real organization or business unit, basic product improvements not tied to process measurements, software maintenance without detailed process measurements, and any project without measured before-and-after cost benefits. Mock projects and training exercises do not qualify.
What is the difference between ASQ and IASSC on project requirements?
ASQ requires documented real-world project completion for Black Belt certification. It verifies both knowledge and applied experience. IASSC requires no project at any belt level. It tests knowledge through a rigorous closed-book exam based on the IASSC Body of Knowledge. IASSC describes the difference this way: “Certification should test mastery of the Body of Knowledge. Knowledge and the ability to apply are not one and the same, and they cannot be measured the same way.”
How SSDSI Prepares You?
At Six Sigma Development Solutions Inc, we train professionals for IASSC certification at the Yellow Belt, Green Belt, and Black Belt levels.
SSDSI is an IASSC Accredited Training Organization. Our programs align directly with the IASSC Body of Knowledge. Completing SSDSI training prepares you to pass the IASSC closed-book proctored exam.
You do not need a completed project to enroll in our training. You do not need a completed project to earn IASSC certification.
If you plan to pursue ASQ certification in the future, the knowledge and tools you build in our programs apply directly. IASSC and ASQ cover very similar content in their DMAIC-based bodies of knowledge. Many professionals earn IASSC certification first, build project experience, and then pursue ASQ Black Belt as a second, project-verified credential.
We deliver training in three formats. Onsite training brings our instructors to your location. Live virtual training is instructor-led and delivered in real time online. Online self-paced training lets you work through the content on your own schedule.
All three formats prepare you for the same IASSC certification exam. All three result in the same IASSC-accredited credential.
Not sure which path fits your situation?
Contact Six Sigma Development Solutions Inc. We help you match your background, your timeline, and your goals to the right certification body and belt level.
About Six Sigma Development Solutions, Inc.
Six Sigma Development Solutions, Inc. offers onsite, public, and virtual Lean Six Sigma certification training. We are an Accredited Training Organization by the IASSC (International Association of Six Sigma Certification). We offer Lean Six Sigma Green Belt, Black Belt, and Yellow Belt, as well as LEAN certifications.
Book a Call and Let us know how we can help meet your training needs.
