The difference between legal tax planning and a reporting mistake that follows you home
This site explains how legal tax residency, tax treaties, and programs like Puerto Rico's Act 60 actually work, alongside the reporting obligations that go with them. We do not sell offshore structures or relocation services, and nothing here replaces a licensed cross-border tax professional.
What are you actually trying to figure out?
What actually goes wrong in cross-border tax planning
These aren't hypothetical warnings — they're the specific, documented ways an honest, well-intentioned plan turns into a real problem.
- Accidentally crossing from legal planning into a reporting failure: someone genuinely qualifies for a tax benefit but never files the separate foreign account disclosure it doesn't automatically satisfy, creating exposure despite paying every dollar of tax actually owed.
- FBAR and FATCA-style non-disclosure penalties can be significant even where there was no intent to evade tax and no tax was actually owed on the account — the obligation is triggered by account value, not by the presence of a tax liability.
- Relying on an unqualified 'relocation consultant' instead of a licensed cross-border tax professional — residency claims and program eligibility require a professional accountable to a real license, not a sales relationship.
- Assuming a rule, treaty benefit, or residency test that applies under one country's system applies the same way under another — tax system models, treaty terms, and residency tests are specific to each country pair and don't generalize.
Six ways into the same subject
Pick the one that matches what you're actually trying to decide.
Know the line before anything else
What separates legal tax avoidance from illegal tax evasion, explained plainly.
Read the distinction →Understand how tax treaties work
What a treaty actually does between two countries, in general terms.
Read how treaties work →See how tax systems differ by country
Territorial vs. worldwide vs. citizenship-based taxation, compared.
Compare the systems →Understand Puerto Rico's Act 60
The general shape of the program, and why the bar to qualify is high.
Read the Act 60 overview →Living abroad as a US citizen
How the Foreign Earned Income Exclusion works, conceptually.
Read the FEIE guide →Understand reporting obligations
Why disclosing a foreign account matters as much as paying tax on it.
Read the reporting guide →Orientation tools, not tax software
These tools help you compare fees, structure your thinking, and check your readiness — they do not calculate tax owed or file anything.
Conversion cost check
See what a quoted exchange rate and margin actually cost you when moving money between countries — useful once you're transferring funds as part of a relocation or foreign account setup.
Assumptions this uses
- You supply the quoted rate; this tool never fetches or estimates a live market rate
- The margin/spread percentage is entered by you, based on what your provider discloses or what you calculate against a published mid-market rate
- This does not include flat transfer fees some providers charge in addition to the spread
- This is not a tax calculation — it only measures the cost of the currency conversion itself
Limitations: This does not account for flat fees, receiving-bank charges, timing risk if the rate moves before settlement, or any tax consequences of the transfer itself.
Runs entirely in your browser.
The one-sentence test that keeps you on the legal side
Legal tax avoidance changes the facts — where you actually live, how income is actually structured — and then reports those facts honestly. Tax evasion keeps the facts the same and hides or misstates them. If a strategy depends on a tax authority never finding out something true, it is not planning, it is exposure. When in doubt, that question alone is worth taking to a professional.
Ask about cross-border tax terms and concepts
Get plain-English explanations of the terminology — not advice on your specific situation.
Tell us what you're working through
This isn't a promise of a specific outcome — it's a way to get pointed toward the right resource, or toward a qualified cross-border professional if that's the right next step.
Nothing you send here is tax or legal advice, and nothing is shared beyond what's needed to respond to you.
Partner link — we may be paid a fee at no cost to you. How we make money.
Talk to a qualified cross-border tax professional
Jurisdiction comparisons and residency tests are fact-specific. A licensed cross-border preparer can look at your actual situation before you make a move.
Request an introduction →The Cross-Border Tax Planning Starter Guide
This free guide walks through the same framework used across this site: understand the legal-avoidance-vs-evasion line, compare jurisdictions properly, and know your reporting obligations before you act. It ends with a worksheet and a list of questions to bring to a licensed cross-border tax professional.
Where to go from here
These are lower-friction next steps, not recommendations to act on a specific strategy — what you do with your own situation should go through a licensed professional.
How we make money: some links here are partner or affiliate links and we may be paid a fee at no cost to you. It never changes what we write or how options are ordered — see our disclosure and methodology.
Cross-border money transfers
A comparison point for the transfer fees and exchange-rate spreads that come up once you're actually moving money between countries.
Compare transfer options →Cross-border tax questions, answered plainly
The questions people actually type. Where the honest answer is "it depends," we say what it depends on.
What's the actual difference between tax avoidance and tax evasion?
Tax avoidance is legally arranging your affairs — where you live, how income is structured — to reduce what you owe, and then reporting those facts honestly. Tax evasion is hiding income, misrepresenting facts, or failing to report something you're required to disclose. Avoidance is a well-established, legal field; evasion is a crime in essentially every country. The line is honesty and disclosure, not cleverness.
Does moving abroad automatically reduce my taxes?
It depends entirely on your citizenship and the tax system of both countries involved. Someone who is a citizen of a country with worldwide, citizenship-based taxation — the United States is the main example — generally remains taxed on worldwide income no matter where they live. For most other countries, tax residency (not citizenship) determines the obligation, so moving can change your position, but the details depend on both countries' specific rules.
What is a tax treaty and does it eliminate double taxation entirely?
A tax treaty is an agreement between two countries that allocates taxing rights over the same income and generally provides mechanisms — credits or exemptions — so the same income isn't fully taxed twice. It doesn't eliminate all tax, and treaty terms vary significantly by country pair, so you need to check whether a treaty exists between your specific two countries and what it actually covers.
What's the difference between a territorial and a worldwide tax system?
A territorial system taxes only income earned within that country's borders. A worldwide system taxes residents on all income, wherever it was earned. Most countries use some version of worldwide, residence-based taxation. The United States is unusual because it taxes citizens on worldwide income based on citizenship alone, regardless of where they live or whether they're a tax resident anywhere else.
Is Puerto Rico's Act 60 a loophole?
No — it's a real, publicly documented US tax incentive program with specific eligibility requirements, not a loophole or a gray area. It generally requires becoming a bona fide resident of Puerto Rico, which involves meeting physical presence, tax home, and closer-connection tests, and the incentives apply to specific categories of income. Qualifying is strict, and this is genuinely a situation where professional guidance before you act is essential.
What is the Foreign Earned Income Exclusion?
It's a mechanism available to US citizens and certain residents living abroad that can exclude a portion of foreign-earned income from US federal tax, provided you meet either a bona fide residence test or a physical presence test. It applies to earned income from work, not passive income like investment returns, and it doesn't remove the requirement to file a US tax return.