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Blog · 124 guides
Browse by Guides, US States, International, or Federal.
- Defending a residency audit: timeline, evidence, and what auditors actually do
- Form 8840 and the closer-connection exception
- The SPT 3-year weighted formula, with worked examples
- Tax Days vs. Topia: a comparison for individual cross-border residents
- The remote worker's multi-state tax guide: nexus, day counts, and double tax
- Tax Days vs. Domicile365: feature, price, and privacy comparison
- Pennsylvania residency rules: domicile, statutory residence, and Philly's local tax
- Tax Days vs. iReside: which residency tracker is right for you?
- Illinois residency rules: domicile, the abode test, and Chicago tax exposure
- The expat day counter guide: residency, treaties, and the rules you'll actually face
- Tax Days vs. TaxBird: which residency tracker is right for you?
- Tax Days vs. Monaeo: an honest comparison
- West Virginia's 183-Day Rule & the 30-Day Exit: Residency Both Ways
- How Snowbirds Should Track Tax Days: US States and the US-Canada Border
- Oklahoma's Seven-Month Residency Rule: Months, Not 183 Days
- North Dakota's 7-Month (210-Day) Residency Rule: A High Bar for Snowbirds
- New Mexico's 185-Day Rule: Why Only Full 24-Hour Days Count
- Nebraska's 183-Day Residency Rule: Permanent Abode & Any-Part-of-a-Day Counting
- Kentucky's 183-Day Rule & Reciprocity: A Cross-Border Commuter's Guide
- Iowa's 183-Day Rule: A Rebuttable Presumption You Can Fight
- Indiana's 183-Day Residency Rule, Domicile & Reciprocity Explained
- Hawaii's 200-Day Rule: The Rebuttable Presumption of Residency
- Washington DC's 183-Day Residency Rule: The Abode-Maintained Trap
- Arkansas' Six-Month Residency Rule: Home Plus More Than Six Months
- Alabama's Seven-Month Residency Rule: A Higher Bar Than 183 Days
- Germany's 183-day rule and 'center of vital interests' test
- Year-End Residency Review: A December Audit-Prep Checklist
- Tax Residency for Yacht Crew & Pilots: Seafarers' Earnings & Day Counting
- Which Tax Residency Rules Apply to You? State + Visa + Test Matrix
- Vietnam Tax Residency for Expats: 183-Day Rule & Long-Stay Visas
- Turkey Expat Tax Residency: 183-Day Rule & Returning-Resident Deferral
- South Africa Tax Residency: 183-Day Test & Ordinary Residence
- Schengen Overstay Penalties & Tax Implications
- Perpetual Traveler Tax Status: Myth vs Reality
- Offshore Account Reporting by Residency Status (FBAR / CRS / FATCA)
- Monaco Tax Residency: The Bank Deposit Path & French Exception
- Medical, Exempt & Military Days: Official Rules by Jurisdiction
- Ireland Non-Dom: Indefinite Remittance Basis & Treaty Interactions
- Greece Golden Visa & the 183-Day Tax-Residency Trigger
- Georgia (Country) Tax Residency: The 183-Day Rule & 1% Regime
- Estonia e-Residency vs Tax Residency: What It Does (and Doesn't) Do
- Brazil Tax Residency: 183-Day Test & 2025 Non-Resident Cert Changes
- Argentina Residency & Bienes Personales After the 2025 Reform
- April Tax Deadline & Residency Audit Season: A Planning Guide
- Andorra Passive Residency & the 10% Flat-Tax Scheme
- Massachusetts 183-day rule and the Millionaire's Tax: residency for high earners
- Vermont Residency Guide & Neighboring-State Audit Coordination
- Utah Residency: 183-Day Rule & Domicile Requirements
- The Permanent-Home Tie-Breaker: OECD Article 4(2) in Practice
- South Carolina Part-Year Residency & Personal-Services Income
- Schengen 90/180 with Multiple Passports: Can You Reset Your Count?
- Rhode Island Residency Rules & New England Tax Implications
- Tax Residency for Retirees: Social Security, Medicare IRMAA & Domicile
- Tax residency audit defense: the evidence hierarchy and what precedent rewards
- New Year Tax Residency Planning: The 2026 Checklist for Snowbirds & Expats
- Montana Residency: Big Sky Domicile Defense
- Missouri Residency Rules & Midwest Reciprocal Agreements
- Maine Residency Rules: Safe-Harbor Days & Lower Audit Pressure
- Louisiana Residency & the Domicile Act Mechanics
- Long-Term Resident & the 8-of-15-Year Rule: How 'Any Portion' Counts Years
- Kansas Residency Rules & Great Plains Tax Comparison
- Idaho Residency Rules & Remote-Worker Multistate Strategy
- Green-Card Abandonment (Form I-407): Timing & Tax-Residency Implications
- Dual Citizens & Treaty Tie-Breakers: When the US Saving Clause Overrides
- Departure Tax & Exit Strategies: Australia, Canada, US, Argentina
- Delaware 183-Day Rule & Corporate-Tie Connections
- Tax Residency for Crypto Traders: Capital Gains by Jurisdiction & the 30% Trap
- Connecticut residency audits: 183-day rule, abode test, and the Greenwich playbook
- New Jersey residency rules: domicile, statutory residence, and the 183-day trap
- Wisconsin 183-Day Rule & Reciprocal Agreements (IL, IN, KY, MI)
- The US Non-Resident Alien Capital-Gains Trap: 183 Days & the 30% Rate
- Tax Residency Spreadsheet vs App: Why Google Sheets Won't Survive an Audit
- Residence-Based vs Territorial Tax Systems Explained
- Portugal NHR (Grandfathered): Rules for Pre-2025 Applicants
- Philippines Digital Nomad Visa: Tax on Foreign Income
- Oregon's 200-Day Residency Rule: A Higher Bar & Snowbird Advantage
- New Zealand Tax Residency: 183-Day Rule & Ordinary Residence
- New Hampshire Residency: A No-Tax State After the I&D Repeal
- Minnesota Residency Rules: Aggressive Auditor Profile & the 183-Day Test
- Malta Non-Dom & the Remittance Basis: 183-Day Rule + Minimum Tax
- J-1 Exchange Visitors: SEVIS Day-Counting & the Exempt-Year Window
- Italy's Non-Dom Substitute-Tax Regime
- Indonesia & Remote-Worker Tax: 183-Day Trigger & Territorial Rules
- Golden Visa Is Not Tax Residency: The 183-Day Rule Still Applies
- FBAR & FATCA for Tax-Residency Planning: Reporting as a US Person
- Expatriation Exit Tax & Day-Counting: Form 8854 for Covered Expatriates
- Costa Rica Tax Residency: Territorial System & 183-Day Rule
- Colorado's 6-Month Rule & Snowbird Residency Strategy
- Colombia Tax Residency for Digital Nomads: The DNV
- Arizona's Remote-Worker Safe Harbor vs. the 183-Day Rule
- UAE and Dubai tax residency: 90 vs 183 days, and what you actually need
- Spain's Beckham Law and 183-day rule: residency for inbound expats
- Washington State Residency Rules: Capital Gains Tax & Domicile Defense
- UK FIG Regime: The 4-Year Foreign Income & Gains Exemption (Post-Non-Dom)
- Thailand DTV & Tax Residency: the 180-Day Rule, Day-Counting & Foreign Income
- Territorial Tax Countries 2026: The List & Residency Thresholds
- Tennessee Residency Guide: Zero Income Tax & Escaping High-Tax-State Audits
- Tax Residency Edge Cases: Do Layovers, Partial Days & the Midnight Rule Count?
- Portugal IFICI (NHR 2.0): 20% Flat Tax for Qualified Professionals
- Panama Territorial Tax & Residency: the 183-Day Threshold and 0% on Foreign Income
- Nevada Domicile & the 183-Day Rule: No Income Tax, Common Audit Paths
- Malaysia DE Rantau & Tax Residency: The 182-Day Threshold for Tech Professionals
- India NRI Tax Residency: The 182-Day Rule & the 120-Day Change
- How Many Days Can I Spend in a Country Before Becoming a Tax Resident?
- Hong Kong Tax Residency: The 180/300-Day Cumulative Trap
- H-1B Holders & the Substantial Presence Test: Day-Counting for Skilled Workers
- Form 8840 Filing & Audit Defense: Proving Closer Connection to a Foreign Country
- First-Year Choice Election: Green-Card Arrivals & Dual-Status Filing
- F-1 to OPT to H-1B: Tax Residency Through the Transition
- Day-Counting Variations by Country: Calendar, Tax-Year, Rolling & Cumulative
- Cyprus Non-Dom: The 17-Year Regime & Deemed-Domicile Rules
- China's 183-Day Rule & the 6-Year Worldwide-Income Trap
- Best Tax Residency Tracker Apps 2026: Complete Comparison
- Portugal NHR and IFICI: residency days, eligibility, and how to track them
- The digital nomad tax guide: residency, Schengen, and the rules that catch you
- Texas residency for snowbirds: domicile, day counts, and what to track
- The UK Statutory Residence Test (SRT) explained: ties, days, and automatic tests
- Florida domicile: the complete guide to changing your tax residency
- How California decides residency: the 9-month rule and facts test
- The Substantial Presence Test, calculated step-by-step
- The snowbird tax tracker guide: NY ↔ FL, NJ ↔ FL, IL ↔ FL
- Schengen 90/180 explained: rolling windows, non-EU citizens, and how to count
- The New York 184-day rule: a survivor's guide
- How the 183-day rule decides your tax residency
Rules reference · 254 jurisdictions
Index: All rules. Browse by type or region on the rules page.
Rule types
- 183-day rule
- Substantial Presence Test
- Rolling window
- Statutory Residence Test (UK)
- Days + Abode (statutory residence)
- Facts and circumstances
Regions
US states (51)
- Alaska
- Alabama
- Arkansas
- Arizona
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Iowa
- Idaho
- Illinois
- Indiana
- Kansas
- Kentucky
- Louisiana
- Massachusetts
- Maryland
- Maine
- Michigan
- Minnesota
- Missouri
- Mississippi
- Montana
- North Carolina
- North Dakota
- Nebraska
- New Hampshire
- New Jersey
- New Mexico
- Nevada
- New York
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Virginia
- Vermont
- Washington
- Wisconsin
- West Virginia
- Wyoming
Special regions (1)
Countries (202)
- 🇺🇸 United States (Federal)
- 🇨🇦 Canada
- 🇲🇽 Mexico
- 🇬🇹 Guatemala
- 🇧🇿 Belize
- 🇭🇳 Honduras
- 🇸🇻 El Salvador
- 🇳🇮 Nicaragua
- 🇨🇷 Costa Rica
- 🇵🇦 Panama
- 🇨🇺 Cuba
- 🇯🇲 Jamaica
- 🇭🇹 Haiti
- 🇩🇴 Dominican Republic
- 🇵🇷 Puerto Rico
- 🇹🇹 Trinidad and Tobago
- 🇧🇧 Barbados
- 🇧🇸 Bahamas
- 🇦🇬 Antigua and Barbuda
- 🇩🇲 Dominica
- 🇬🇩 Grenada
- 🇰🇳 Saint Kitts and Nevis
- 🇱🇨 Saint Lucia
- 🇻🇨 Saint Vincent and the Grenadines
- 🇰🇾 Cayman Islands
- 🇧🇲 Bermuda
- 🇻🇬 British Virgin Islands
- 🇻🇮 US Virgin Islands
- 🇨🇴 Colombia
- 🇻🇪 Venezuela
- 🇬🇾 Guyana
- 🇸🇷 Suriname
- 🇧🇷 Brazil
- 🇪🇨 Ecuador
- 🇵🇪 Peru
- 🇧🇴 Bolivia
- 🇵🇾 Paraguay
- 🇨🇱 Chile
- 🇦🇷 Argentina
- 🇺🇾 Uruguay
- 🇬🇧 United Kingdom
- 🇮🇪 Ireland
- 🇮🇸 Iceland
- 🇳🇴 Norway
- 🇸🇪 Sweden
- 🇩🇰 Denmark
- 🇫🇮 Finland
- 🇪🇪 Estonia
- 🇱🇻 Latvia
- 🇱🇹 Lithuania
- 🇵🇱 Poland
- 🇩🇪 Germany
- 🇳🇱 Netherlands
- 🇧🇪 Belgium
- 🇱🇺 Luxembourg
- 🇫🇷 France
- 🇲🇨 Monaco
- 🇨🇭 Switzerland
- 🇱🇮 Liechtenstein
- 🇦🇹 Austria
- 🇨🇿 Czech Republic
- 🇸🇰 Slovakia
- 🇭🇺 Hungary
- 🇸🇮 Slovenia
- 🇭🇷 Croatia
- 🇧🇦 Bosnia and Herzegovina
- 🇷🇸 Serbia
- 🇲🇪 Montenegro
- 🇽🇰 Kosovo
- 🇲🇰 North Macedonia
- 🇦🇱 Albania
- 🇬🇷 Greece
- 🇮🇹 Italy
- 🇸🇲 San Marino
- 🇲🇹 Malta
- 🇨🇾 Cyprus
- 🇪🇸 Spain
- 🇦🇩 Andorra
- 🇵🇹 Portugal
- 🇷🇴 Romania
- 🇧🇬 Bulgaria
- 🇲🇩 Moldova
- 🇺🇦 Ukraine
- 🇧🇾 Belarus
- 🇷🇺 Russia
- 🇹🇷 Turkey
- 🇦🇪 UAE
- 🇸🇦 Saudi Arabia
- 🇶🇦 Qatar
- 🇰🇼 Kuwait
- 🇧🇭 Bahrain
- 🇴🇲 Oman
- 🇾🇪 Yemen
- 🇯🇴 Jordan
- 🇱🇧 Lebanon
- 🇸🇾 Syria
- 🇮🇶 Iraq
- 🇮🇷 Iran
- 🇮🇱 Israel
- 🇵🇸 Palestine
- 🇬🇪 Georgia
- 🇦🇲 Armenia
- 🇦🇿 Azerbaijan
- 🇰🇿 Kazakhstan
- 🇺🇿 Uzbekistan
- 🇹🇲 Turkmenistan
- 🇰🇬 Kyrgyzstan
- 🇹🇯 Tajikistan
- 🇦🇫 Afghanistan
- 🇵🇰 Pakistan
- 🇮🇳 India
- 🇳🇵 Nepal
- 🇧🇩 Bangladesh
- 🇱🇰 Sri Lanka
- 🇲🇻 Maldives
- 🇲🇳 Mongolia
- 🇨🇳 China
- 🇭🇰 Hong Kong
- 🇲🇴 Macau
- 🇹🇼 Taiwan
- 🇯🇵 Japan
- 🇰🇷 South Korea
- 🇰🇵 North Korea
- 🇸🇬 Singapore
- 🇲🇾 Malaysia
- 🇧🇳 Brunei
- 🇮🇩 Indonesia
- 🇹🇱 Timor-Leste
- 🇵🇭 Philippines
- 🇹🇭 Thailand
- 🇻🇳 Vietnam
- 🇱🇦 Laos
- 🇰🇭 Cambodia
- 🇲🇲 Myanmar
- 🇦🇺 Australia
- 🇳🇿 New Zealand
- 🇵🇬 Papua New Guinea
- 🇫🇯 Fiji
- 🇸🇧 Solomon Islands
- 🇻🇺 Vanuatu
- 🇼🇸 Samoa
- 🇹🇴 Tonga
- 🇰🇮 Kiribati
- 🇲🇭 Marshall Islands
- 🇫🇲 Micronesia
- 🇵🇼 Palau
- 🇳🇷 Nauru
- 🇹🇻 Tuvalu
- 🇲🇦 Morocco
- 🇩🇿 Algeria
- 🇹🇳 Tunisia
- 🇱🇾 Libya
- 🇪🇬 Egypt
- 🇸🇩 Sudan
- 🇸🇸 South Sudan
- 🇪🇷 Eritrea
- 🇩🇯 Djibouti
- 🇸🇴 Somalia
- 🇪🇹 Ethiopia
- 🇰🇪 Kenya
- 🇺🇬 Uganda
- 🇹🇿 Tanzania
- 🇷🇼 Rwanda
- 🇧🇮 Burundi
- 🇨🇩 Democratic Republic of the Congo
- 🇨🇬 Republic of the Congo
- 🇨🇫 Central African Republic
- 🇬🇦 Gabon
- 🇬🇶 Equatorial Guinea
- 🇨🇲 Cameroon
- 🇹🇩 Chad
- 🇳🇪 Niger
- 🇳🇬 Nigeria
- 🇧🇯 Benin
- 🇹🇬 Togo
- 🇬🇭 Ghana
- 🇨🇮 Ivory Coast
- 🇧🇫 Burkina Faso
- 🇲🇱 Mali
- 🇲🇷 Mauritania
- 🇸🇳 Senegal
- 🇬🇲 Gambia
- 🇬🇼 Guinea-Bissau
- 🇬🇳 Guinea
- 🇸🇱 Sierra Leone
- 🇱🇷 Liberia
- 🇨🇻 Cape Verde
- 🇸🇹 Sao Tome and Principe
- 🇦🇴 Angola
- 🇿🇲 Zambia
- 🇲🇼 Malawi
- 🇲🇿 Mozambique
- 🇿🇼 Zimbabwe
- 🇧🇼 Botswana
- 🇳🇦 Namibia
- 🇿🇦 South Africa
- 🇸🇿 Eswatini
- 🇱🇸 Lesotho
- 🇲🇬 Madagascar
- 🇲🇺 Mauritius
- 🇸🇨 Seychelles
- 🇰🇲 Comoros
Glossary · 32 terms
Index: All terms.
- 183-day rule
- Abode (permanent place of)
- Bona Fide Residence Test
- Casa habitación
- Center of vital interests
- Closer connection exception
- Contact period (Ohio)
- Contemporaneous records
- Convenience of employer rule
- Declaration of Domicile
- Departure tax (exit tax)
- Domicile
- FEIE (Foreign Earned Income Exclusion)
- Foyer
- Gewöhnlicher Aufenthalt
- Habitual abode
- Homestead exemption
- Impatriate regime (Italy)
- Lump-sum taxation (forfait fiscal)
- Millionaire's Tax
- NHR (Non-Habitual Resident, Portugal)
- Ordinary residence (Ireland)
- Physical Presence Test
- PPA (Permanent Place of Abode)
- Remittance basis
- Schengen Area
- SPT (Substantial Presence Test)
- SRT (UK Statutory Residence Test)
- Statutory residence
- Tax home
- Tie-breaker rule
- Wohnsitz