US Taxes & Cross-Border Business Structuring for Expats
IRS Enrolled Agent Services, Federal Tax Prep, LLC Formation, and Online Notarization for Expats
We eliminate tax exposure and regulatory ambiguity for US expats.
"I needed a tax advisor to file my US taxes and properly structure my LLC to protect my investment properties after moving abroad. Portavia delivered, no issues!"
Jake Burke
The Complexity of Cross-Border US Taxation
Managing US tax obligations while residing or operating abroad requires a knowledgable partner to help avoid misfiled returns, double taxation, or IRS non-compliance penalties.
What You're Dealing With
Complex federal reporting obligations (FEIE Form 2555, FTC Form 1116, FBAR/FATCA)
Exposure to double taxation from improper income characterization or entity structures
Incorrect LLC tax classification elections leading to adverse tax treatment
Operational barriers to obtaining US legal document notarization overseas
Absence of authorized representation for IRS notices, inquiries, or audits
Our Approach
Comprehensive federal tax preparation for individuals, partnerships, and corporations
Federal authorization as an IRS Enrolled Agent with unlimited IRS representation rights
Turnkey US LLC formation, EIN procurement, and strategic entity tax classification
Secure Remote Online Notarization (RON) for US legal and corporate documentation
Systematic de-risking of foreign assets, portfolios, and corporate income streams
How Portavia Works
A systematic framework for US federal tax compliance, entity structuring, and risk mitigation.
Portfolio & Tax Exposure Audit
We conduct a granular review of your prior federal tax filings, foreign asset holdings, and business entity structures to identify compliance gaps, filing errors, and tax risks before submission.
- Prior-Year Federal Tax Return Audit
- FBAR (FinCEN Form 114) & FATCA (Form 8938) Disclosure Review
- Entity Structure & Tax Classification Analysis
- Tax Risk Mitigation Report
Entity & Compliance Architecture
We implement the optimal federal tax structure, prepare required tax elections, form US business entities, and execute necessary legal documentation via Remote Online Notarization.
- Foreign Earned Income Exclusion vs. Foreign Tax Credit Optimization
- US LLC Formation, State Registration, & Operating Agreements
- Entity Tax Classification Elections (Form 8832 / Form 2553)
- Remote Online Notarization (RON) Execution
Federal Execution & IRS Representation
We prepare and electronically file your federal individual and business tax returns, serving as your credentialed representative before the IRS for all filing matters.
- Federal Individual Tax Preparation (Form 1040)
- Federal Business Tax Preparation (Form 1065, Form 1120, Form 1120-S)
- IRS Power of Attorney Filing (Form 2848) & Direct IRS Representation
- Annual Federal Compliance & Reporting Maintenance
Ensure absolute US federal compliance and protect income and assets while living abroad.
Federal individual tax preparation (Form 1040)
FEIE and FTC optimization
FBAR (FinCEN Form 114) and FATCA (Form 8938) filings
Remote Online Notarization (RON)
Direct IRS representation (audit defense, penalty abatement)
De-risked planning for pensions & investment sales
Establish, structure, and maintain compliant US commercial entities from anywhere in the world.
Turnkey US LLC formation & Registered Agent coordination
Employer Identification Number (EIN) procurement
Federal tax status elections (Disregarded, Partnership, S-Corp, C-Corp)
Business tax return preparation (Form 1065, 1120, 1120-S)
Cross-border distributive share & executive compensation structuring
Remote Online Notarization (RON) for corporate resolutions & banking
De-Risked Financial Operations
Beyond the bureaucracy lies a life of purpose. We handle the tax complexity so you can focus on belonging wherever you land.
At Portavia, we believe that cultural integration starts with financial peace of mind.
A Foundation of Trust
Legacy & Security
Holistic Well-being
Residency with Confidence
The Freedom of Clarity
Your Gateway to Greece
Portavia was founded by an IRS Enrolled Agent, US expat, and former corporate executive with a successful exit. Combines executive management standards with direct federal tax authorization (Department of the Treasury) to represent taxpayers before the IRS.
Audit-Ready Accuracy
Transparent Pricing
Direct Representation
Full Digital Execution: Secure electronic filing and online notarization
Secure Your US Tax Compliance
Ensure your federal returns, corporate structures, and legal documents are executed with absolute precision and regulatory certainty.