Last updated: March 30, 2026
 Content reviewed by: Research & Immigration Content Team – KOSAM LLC Verification: Benchmarked against the USCIS Policy Manual and recent adjudication trends.

How long does it really take to go from a Vietnam passport holder to a U.S. green card holder?

For many people, the process feels unclear, unpredictable, and even risky. However, in reality—especially with pathways like EB-2 NIW (National Interest Waiver)—you can follow a structured and realistic timeline of 12–18 months if done correctly.

This guide will help you:

• Understand the step-by-step timeline
• Know exactly what to prepare at each stage
• And most importantly, reduce uncertainty with a clear roadmap

🎯 Overview of the 18-Month Green Card Timeline

This model is commonly applied to EB-2 NIW applicants:

• Months 1–2: Profile preparation
• Months 3–4: File Form I-140
• Months 5–7: Receive I-140 decision (Premium Processing)
• Months 8–14: NVC processing and interview scheduling
• Months 15–18: Interview and visa issuance

🗓️ Step-by-Step Timeline Breakdown

📌 Months 1–2: Profile Preparation (Most Critical Stage)

This phase determines up to 80% of your success rate.

What should you prepare?

✔️ Academic degrees (Bachelor’s, Master’s, PhD)
✔️ Professional CV
✔️ Work experience
✔️ Achievements (publications, projects, awards, patents)
✔️ Evidence of impact in your field

For EB-2 NIW, your case must satisfy three core criteria:

• Your work has substantial merit and national importance
• You are well-positioned to advance your proposed endeavor
• It benefits the U.S. to waive the job offer requirement

Common mistakes:

❌ Misjudging your profile strength
❌ Failing to translate experience into “national interest”
❌ Lack of strategic documentation

👉 This is why early expert guidance is critical to avoid losing months—or even years—redoing your case.

📌 Months 3–4: Filing Form I-140

Once your petition is complete, you will file Form I-140 (Immigrant Petition) with USCIS.

Two processing options:

• Standard Processing: 6–10 months
• Premium Processing: ~15–45 days

👉 Most applicants choose Premium Processing to:

• Shorten waiting time
• Reduce uncertainty
• Move forward quickly with planning

📌 Months 5–7: I-140 Decision

After submission, you may receive:

• ✅ Approval
• ⚠️ Request for Evidence (RFE)
• ❌ Denial

Key insight:

👉 A well-prepared case significantly increases approval probability
👉 Even with an RFE, a strong strategy can still lead to success

📌 Months 8–10: National Visa Center (NVC) Stage

Once your I-140 is approved, your case moves to the National Visa Center (NVC).

Required steps:

✔️ Pay visa fees
✔️ Submit Form DS-260
✔️ Prepare civil documents:

• Police clearance certificate
• Birth certificate
• Passport
• Financial documents (if applicable)

👉 This stage is primarily administrative and manageable with proper guidance.

📌 Months 11–14: Interview Scheduling

After completing NVC processing, you will wait for your immigrant visa interview appointment.

Timeline depends on:

• Visa Bulletin availability
• Case volume
• Country of origin

👉 Good news: Vietnam typically does not face heavy backlog for EB-2 NIW.

📌 Months 15–18: Interview and Visa Issuance

Is the interview difficult?

👉 In reality:

• It is not an exam
• It focuses on verifying your information
• Well-prepared applicants have a high approval rate

After approval:

✔️ Receive your immigrant visa
✔️ Travel to the U.S.
✔️ Receive your Green Card (Permanent Residency)

📊 Simplified Timeline Summary

⚠️ What Can Delay Your Timeline?

Not all cases follow the exact 18-month timeline. Delays may occur due to:

• Weak profile requiring enhancement
• Multiple RFEs
• Poor initial strategy
• Slow document preparation
• Visa backlog (rare for Vietnam currently)

👉 However, with proper planning, timelines remain highly predictable.

💡 Why Do Some Applicants Fail Despite Similar Timelines?

The difference is not time—it’s strategy.

Common failure reasons:

• ❌ Lack of understanding of USCIS criteria
• ❌ Copy-paste petition templates
• ❌ Weak narrative and evidence structure
• ❌ No long-term roadmap

Successful applicants, on the other hand:

• Have a clear roadmap
• Know exactly where they are in the process
• Work with experienced advisors

🚀 Expert Insight: Clarity Reduces Risk

One of the biggest concerns for applicants is uncertainty:

👉 “How long will it take?”
👉 “What step am I at right now?”

With a clear timeline, you can:

✔️ Plan your finances
✔️ Reduce stress
✔️ Stay in control of your process
✔️ Increase your success rate

💰 Transparent Costs Matter

Another major concern is unclear pricing.

A reliable process should include:

• Clear breakdown of fees
• No hidden costs
• No unnecessary upselling

👉 Transparency is key to building trust and long-term success.

🎯 Conclusion: 18 Months Is Realistic—If Done Right

Going from a Vietnam passport holder to a U.S. green card holder is not an unrealistic dream.

If you:

• Have a solid academic or professional background
• Follow the right strategy
• Build a strong, well-structured petition

👉 Achieving permanent residency within 12–18 months is entirely feasible.

💰 Service Fees at KosamSolutions

KosamSolutions provides a transparent, all-inclusive EB-2 NIW service with a 100% refund guarantee if the petition is denied.

• NIW for Research/Academic Profiles: $8,000

• NIW for Other Professional Profiles: $10,000

• Includes free RFE (Request for Evidence) support and initial profile assessment.

• USCIS government fees (I-140, I-485, or DS-260) are paid directly to ensure transparency.

👉 View Details: EB-2 NIW Green Card Service

📞 Free 1-on-1 Consultation

• Web: kosamsolutions.com

• Email: info@kosamsolutions.com

• Phone: +1-772-341-1152 (USA) | +84-985-990-459 (Vietnam)

⭐ About the Founder – Dr. Hong-Phuong Nguyen

KosamSolutions (a division of KOSAM LLC) was founded and is managed by Dr. Hong-Phuong Nguyen, a scientific expert who successfully navigated the EB-2 NIW Green Card process himself. He now applies this firsthand experience to help clients master the same criteria.

• Credentials: Ph.D. in Biomedical Science & Technology; currently serving as a Scientist at Indiana University, USA (since 01/2023).

• Major Achievement: Recipient of the NIH National Research Service Award (2024–2026), one of the most prestigious research grants from the U.S. Government.

• Reviewer Roles: Acts as a Manuscript Reviewer for international scientific journals—a key criterion in proving “extraordinary ability” for immigration purposes.