Protect original documents
Help applicants keep vital identity documents in hand while completing a credible local review.
Our story
Puran Accounting & Tax Solution Lab created Nexus to address a real local problem: applicants being asked to mail original foreign passports away during the ITIN process.
Why Nexus exists
The ITIN application process shouldn't require families to surrender their most vital proof of identity.
We built the Nexus CAA Training Academy to solve a critical local vulnerability: applicants being forced to mail original foreign passports away for months. Backed by the institutional architecture of Puran Accounting & Tax Solution Lab, Nexus exists to elevate the standard of document authentication.
We don't just teach the IRS e-Services application process; we rigorously train tax professionals in forensic analysis. By equipping practitioners to spot counterfeit substrates, misaligned MRZ data, and altered laminates, we keep original documents safely in the hands of the community while ensuring 100% compliant, defensible submissions to the IRS.
Help applicants keep vital identity documents in hand while completing a credible local review.
Apply structured forensic checks, careful interviews, and defensible recordkeeping.
Create a more human path for applicants who depend on passports for daily life and travel.
The founder
Bridging financial precision with human-centric service — the credentialed professional behind Nexus, Puran Accounting & Tax Solution Lab, and the vision for safer ITIN services.

Puran Ramratan
Founder & Lead Instructor
“I thrive at the intersection of complex financial logic and genuine human connection. I lead with empathy, execute with rigorous precision, and stay focused on delivering measurable, time-sensitive results.”
A results-driven professional with a strong foundation in cost accounting, financial strategy, and operational leadership, Puran views every engagement as an opportunity to drive efficiency and transparency. That same standard — whether managing high-stakes financial operations or crafting welcoming, loyalty-focused guest experiences — shapes how he runs Puran Accounting & Tax Solution Lab in Queens, New York, serving individuals and small businesses across tax preparation, ITIN and Certified Acceptance Agent services, bookkeeping, and payroll.
An avid global explorer, he brings a uniquely adaptable, culturally aware perspective to every challenge, always focused on creating value, building trust, and delivering excellence. It was this front-line, human-centric experience that exposed a recurring, avoidable risk: applicants being asked to mail their original foreign passports away for months just to obtain an ITIN.
He founded the Nexus CAA Forensic Training Academy to change that — equipping tax and document professionals with real forensic skills so they can verify identity documents locally, keep originals safely in applicants' hands, and submit fully compliant packages to the IRS. His mission is simple: raise the standard of diligence while protecting the people the system is meant to serve.
One mission, three teams
Nexus is the training academy at the center of a small ecosystem: a trusted local tax practice and the software studio that builds its technology.

The academy
Professional, self-paced training that prepares tax and document professionals for the IRS Certified Acceptance Agent pathway. Four forensic modules and two case studies teach document authentication, fraud detection, and Form W-7 diligence so practitioners can verify identity documents locally and submit compliant ITIN packages.
Explore the curriculum
The parent enterprise
A Queens, NY accounting and tax practice serving individuals and businesses with tax preparation, ITIN and CAA services, bookkeeping, and payroll. Puran created Nexus to solve a real local problem — applicants being asked to mail original foreign passports away during the ITIN process — and provides the institutional backbone behind the academy.
Visit Puran Accounting
The technology studio
The software and digital-infrastructure studio that designed and engineered this platform — from the secure student portal and exam engine to the enrollment, certification, and administration systems. PATSL builds the tools that let Nexus deliver a modern, trustworthy learning experience.
Visit PATSL DeveloperContact us
Questions about the program, ITIN and CAA services, group enrollment, or partnerships? Send a message and our team will respond within one business day.
Queens, NY, USA
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