State Tax Residency Calculator
Determine multi-state tax residency and filing requirements.
Residency Status
Status:Full Year Resident
Domicile:CA
Score:75/100
Domicile score based on home, voter, bank, days, and income indicators.
Days Analysis
Domicile:180 days
Other States:90 days
Traveling:95 days
Domicile %:49%
183+ days in state + permanent abode = statutory resident (NY rule).
Residency Indicators
- Owns home in domicile state
- Voter registration in domicile
- Bank accounts in domicile
- Primary income in domicile
Strong domicile indicators: home ownership, voter registration, time spent.
Income Allocation
Total Income:$ 120000
Domicile:$ 80000
Other States:$ 40000
All income taxed by domicile state
Multi-State Filing Requirements
| State | Reason |
|---|---|
| CA | Full Year Resident |
| NY | Income or days in state |
| TX | Days present in state |
File in domicile state plus any state where you earned income or spent significant time.
⚠️ Double Taxation Risk
Domicile state CA may tax worldwide income. Other income: $ 40000
CA, NY, CT, NJ tax residents on all income. Credit for taxes paid to other states may apply.
Credit for Other State Taxes
May claim credit in CA for taxes paid to other states
Most states allow credit to reduce double taxation. Check specific state rules.
State Residency Key Points
- Domicile: permanent home intent
- 183-day rule: statutory residency
- Home ownership: strong indicator
- Voter registration: domicile evidence
- Bank accounts: ties to state
- CA/NY: worldwide income for residents
- TX/FL/WA: no income tax
- Part-year: allocate income
- Credit for other state taxes
- Keep residency documentation