State Tax Residency Rules: All 50 States (2026)

Every state has its own rules for determining who qualifies as a tax resident. If you split your time between two or more states, understanding these rules is essential to filing your taxes correctly and avoiding an unexpected audit.

Why Day Counts Matter for State Taxes

Many states use a statutory residency test: if you spend more than a certain number of days in the state (typically 183) while maintaining a place to live there, you can be taxed as a resident even if your permanent home is somewhere else. This means you could owe income tax in two states simultaneously.

The rules vary significantly. Some states count any part of a day as a full day. Others require an overnight stay. Some have no day-count test at all, relying entirely on where your "domicile" is. Nine states have no income tax whatsoever.

How to Use This Tool

Search for any state by name or abbreviation. Filter by tax type to quickly find no-income-tax states, states with the 183-day threshold, or states with unique rules. Click any column header to sort.

• Day Threshold — the number of days that triggers statutory residency (if applicable)
• Abode Required — whether you must also maintain a permanent place of abode in the state
• Day Definition — what the state counts as a "day" (any part vs. overnight)
• Test Type — how the state determines residency (domicile, days + abode, or factor-based)

Key Takeaways: What You Need to Know

The most common mistake people make is assuming the 183-day rule is universal and straightforward. In reality:

• The 183-day rule is not a safe harbor. Spending fewer than 183 days doesn't guarantee you won't be considered a resident. States can still tax you based on domicile.
• Most states require an abode, not just days. The statutory residency test typically requires both exceeding the day threshold and maintaining a permanent place of abode in the state.
• States define "day" differently. New York counts any part of a day. This means a layover or a day trip counts the same as sleeping in the state overnight.
• Some states are more aggressive than others. New York, California, and Connecticut are known for actively auditing residency claims. If you have significant income and split time between states, documentation is critical.
• Domicile is separate from statutory residency. You can owe taxes in a state where you're domiciled even if you spend very few days there.

How to Protect Yourself

Whether you're a snowbird splitting time between New York and Florida, a remote worker moving between states, or a digital nomad with no fixed address, documenting your days is the single most important thing you can do to protect yourself in a residency audit. The burden of proof is on you.

Tax authorities examine cell phone records, credit card transactions, social media posts, flight records, and utility bills to determine where you actually spent your time. Having an automated, GPS-based record of your daily location provides objective evidence that can corroborate (or replace) these other records.

This information is for educational purposes only and is not tax advice. State tax rules change frequently. Always consult a qualified tax professional for advice about your specific situation.