Tax Treaty Guides
In-depth explainers for key tax treaty concepts. Understand the rules that govern cross-border taxation.
Claiming Treaty Benefits
Step-by-step guide to claiming reduced withholding tax rates under tax treaties — W-8BEN for the US, DT forms for the UK, NR301 for Canada, and common mistakes to avoid.
Complete Guide to Form W-8BEN
Line-by-line instructions for IRS Form W-8BEN — who needs it, how to complete it, common mistakes, and what happens if you don't file.
Digital Nomad Tax Guide
Tax treaty implications for remote workers and digital nomads — PE risk, the 183-day rule, social security totalization, FEIE ($132,900 in 2026), and which treaties help.
How to Reclaim Overpaid Withholding Tax
Step-by-step guide to reclaiming excess withholding tax — US Form 1040-NR, UK HMRC DT forms, Canada NR7-R, timelines, and the $16 billion in unclaimed refunds.
Limitation on Benefits (LOB)
How Limitation on Benefits clauses prevent treaty shopping, the main LOB tests, and why they matter for claiming treaty withholding rates.
Limitation on Benefits (LOB): How to Qualify for Treaty Benefits
A practical guide to Limitation on Benefits provisions in US tax treaties — the 6 LOB tests explained simply, which test fits each entity type, and what happens if you fail.
OECD vs. UN Model Tax Convention
Key differences between the OECD and UN Model Tax Conventions — how they allocate taxing rights, set royalty rates, define PE thresholds, and treat technical service fees.
Permanent Establishment (PE)
What permanent establishment means in tax treaties, how it triggers source-country taxation, and the typical thresholds that create a PE.
Residency Tiebreaker Rules
How tax treaties determine which country has the right to tax when a person is a resident of both — the cascading tiebreaker hierarchy.
The Multilateral Instrument (MLI)
What the OECD Multilateral Instrument is, how it modifies existing tax treaties, the Principal Purpose Test, updated PE rules, and which countries signed — and which didn't.
W-8BEN Treaty Rates by Country
Quick reference for the top 20 US treaty partners — dividend and interest withholding rates to claim on Form W-8BEN Line 10.
W-8BEN vs W-8BEN-E: Which Form Do You Need?
The key differences between IRS Forms W-8BEN and W-8BEN-E — who files which, complexity comparison, and a decision tree for choosing the right form.
What Is a Tax Treaty?
An introduction to bilateral tax treaties — how they work, why they exist, and how they reduce double taxation on cross-border income.
Withholding Tax Basics
How withholding tax works on cross-border payments — who withholds, when it applies, and how treaties reduce it.