Legal, Tax & Business
Infrastructure for Global Founders
Attorney & IRS CAA | Cross-Border Legal Authority
Trinity Legal Chambers provides legal services, regulatory compliance, and business infrastructure for entrepreneurs navigating US formation, intellectual property, tax matters, and cross-border operations.
We work with:
Startups and technology companies
International entrepreneurs
Investors and venture platforms
Policy stakeholders and institutions
The Complete Product Suite
Everything you need to launch, manage, and scale your US business from anywhere in the world.
Meet Our
Legal & Advisory Team
UK-trained legal expertise combined with cross-border business infrastructure, serving international founders navigating US formation, tax compliance, and regulatory matters.
Haris Bin Nadeem
Founder of Trinity Legal Chambers and PayTrinity, Haris brings UK legal training and cross-border expertise to help international entrepreneurs navigate US business formation, tax compliance, intellectual property, and regulatory systems. As an IRS Certified Acceptance Agent, he specializes in ITIN applications and federal tax matters for non-US residents.
Ahmed Khan
Specializes in corporate law, contract drafting, and compliance matters. Advises on US entity structuring and international business transactions.
Sarah Mitchell
Expert in US federal and state tax compliance for non-residents. Handles ITIN applications, annual filings, and international tax matters.
David Chen
Focuses on helping international entrepreneurs establish their US presence. Coordinates banking, payment processing, and infrastructure services.
Your Business Command Center.
Built for Entrepreneurs.
Meet Trinity App. The modern dashboard where international founders manage their US business -- state documents, EIN letters, tax reminders, phone services, and more.
Confidential Document Vault
State documents, EIN letters, and certificates secured with bank-grade encryption
Smart Compliance Reminders
Tax deadlines, annual reports, BOI filing -- never miss a critical date
Multi-Company Overview
Manage multiple LLCs and track phone services, websites, and business addresses
0k+
Founders Onboarded
0.0%
Success Rate
$0M+
Client Revenue Processed
Trusted by Founders
Don't just take our word for it.
“I had an excellent experience using his services. He handled everything from registering my LLC in the United States to creating my Stripe account. Highly recommended!”
“From ITIN to company formation and tax services, PayTrinity has been our go-to compliance partner.”
“Complete US setup plus Amazon business and payment processor support. Smooth experience.”
“Company and EIN completed in just 12 hours. Quarterly tax services, trademark filing, and Stripe setup handled professionally.”
“Excellent support for our US expansion. The team is knowledgeable and responsive.”
“A seamless process for setting up our US entity. Highly recommended for international founders.”
Frequently Asked Questions
Everything you need to know about setting up your US business.