Filing Taxes in 4 States: Multi-State Tax Guide for Travel Nurses

Working in four states during a single year means filing up to five tax returns: federal plus each state. Here’s how to navigate multi-state filing without overpaying.

The Basic Framework

Who Gets to Tax You?

Resident state (tax home):

• Taxes all income worldwide
• But gives credit for taxes paid elsewhere

Non-resident states (assignment states):

• Tax only income earned in that state
• You file as non-resident

Example Setup

Tax home: Texas (no state income tax) Worked in: California, New York, Massachusetts

You file:

• Federal return
• CA non-resident return (CA income only)
• NY non-resident return (NY income only)
• MA non-resident return (MA income only)

State Tax Scenarios

Scenario 1: Tax Home in No-Tax State

Best case scenario. Your only state taxes are to assignment states.

No income tax states:

• Texas, Florida, Washington, Nevada, Wyoming
• Tennessee, South Dakota, Alaska, New Hampshire*

*NH taxes dividends/interest only

Look Up Your Specific States

The scenarios above are the general framework, but “what will I actually owe” depends on which two (or three, or four) states you’re combining. Rather than estimate a blended number here, use the calculator for the specific pair you’re working:

• Tax home in a no-tax state, assignment in a no-tax state — the simplest combination, and fully computable: try Texas, Florida, Washington, or Tennessee.
• Assignment in a state with income tax — our tax calculator by state covers all 50; for the two states travel nurses ask about most, see New York and California. Note both are currently unsourced states in our engine’s coverage (see the note below) — the calculator will show your federal and FICA numbers correctly and flag the state portion rather than guess at it.
• Not sure your current tax home would hold up? The Tax Home Validator checks whether the tax home you’re already claiming is IRS-defensible — it doesn’t pick a state for you, but a “which state is really my tax home” question only has a clean multi-state answer once you know your claimed one is solid.

A note on accuracy: this site’s tax engine computes real federal and FICA tax from IRS and SSA published brackets, but only computes state tax for the 9 states with no wage income tax listed above. For every other state, publishing a specific rate would mean picking a number from an unsourced source — so the calculators show your federal/FICA numbers and label the state portion as unavailable rather than estimate it. The credit-mechanism explanations in this guide describe how the multi-state math works; for the actual dollar figure, use your assignment state’s own withholding calculator or a preparer once you have real W-2 numbers.

Scenario 2: Tax Home in Income-Tax State

Your tax home state taxes all income, but gives credits for taxes paid to assignment states.

Illustrative example (hypothetical rates — states change brackets yearly, so check your actual home and assignment state’s current rate rather than assuming a number):

• Tax home: State A, a flat 4% on all income
• Worked in: State B, an effective 10% on the wages earned there

State A taxes your State B income at its own 4% rate, but you’ve already paid 10% to State B. State A’s credit is capped at what it would have charged on that income (4%), not the full 10% you paid — so you don’t get money back from your home state, but you also don’t pay State A anything more on that slice of income. You still come out paying the higher of the two rates on each dollar, never both.

Scenario 3: Reciprocity States

A handful of neighboring states have bilateral agreements not to double-tax each other’s residents — mostly clustered around Pennsylvania, Ohio, and the DC/Maryland/Virginia area, plus a few in the Midwest. If your tax home and assignment state are on each other’s list, you generally only pay tax to your home state, once you file the assignment state’s reciprocity exemption form with your employer before your first paycheck. A state’s list isn’t automatically mutual with every other state on it — Ohio and New Jersey, for example, don’t have an agreement with each other; the reciprocity is each state’s own separate deal with Pennsylvania.

See the state-by-state reciprocity guide for the confirmed pairs we cover and how to file the exemption form — it’s the more detailed companion to this section. If your specific pair isn’t listed there, verify directly with both states’ revenue departments before assuming no agreement exists.

Step-by-Step Filing

Step 1: Gather Documents

From each agency:

• W-2 showing state wages (should be allocated by state)
• Any 1099s
• State wage breakdown

Step 2: File Federal Return

Complete your federal return first. This establishes your AGI.

Step 3: File Non-Resident State Returns

For each assignment state:

• File non-resident return
• Report only wages earned in that state
• Pay tax owed

Step 4: File Resident State Return

For your tax home state:

• Report all income (including other state income)
• Calculate credit for taxes paid to other states
• Pay remaining tax owed

Avoiding Double Taxation

How Credits Work

The math:

• Total income: $100,000
• Tax home state rate: 5% = $5,000
• Assignment state rate: 8% = $8,000 (on assignment income of $30,000)

If you paid $8,000 to assignment state, your home state gives credit for the lesser of:

• Tax actually paid ($8,000)
• Home state tax on that income (5% × $30,000 = $1,500)

You get $1,500 credit, so you don’t double-pay on that $30,000.

Common Problems

Issue: Assignment state taxes weren’t withheld correctly Solution: You may owe assignment state at filing time

Issue: Home state doesn’t recognize assignment state taxes Solution: Research your specific state rules; some have limits

Issue: Wages allocated incorrectly between states Solution: Request corrected W-2 from agency

Special Situations

California Daily Rule

California is aggressive about taxation:

• They tax any income earned while physically in CA
• Including remote work done in CA
• Keep documentation of days worked

New York City

NYC has its own income tax on top of NY state:

• Only applies to residents
• Non-resident travelers shouldn’t pay it
• If withheld incorrectly, file for refund

Working from “Home”

If you do any work remotely (charting, CEUs) in your tax home state vs. assignment state, allocate those hours properly. This rarely matters practically, but technically applies.

Tax Software vs. CPA

When Software Works

• Working in 2-3 states
• Tax home in no-tax state
• Straightforward W-2 income
• Tech-comfortable

Options: TurboTax, H&R Block (multi-state versions)

When You Need a CPA

• 4+ states in one year
• Tax home status questions
• Amended returns needed
• Large balance due/refund
• Audit concerns

Travel nurse CPAs: TravelTax, HealthcareTravelersGuide

Estimated Costs

Tax Preparation

Filing Fees

Some states charge filing fees beyond the software cost.

Key Takeaways

• File non-resident returns for each assignment state
• Your tax home state gives credit for taxes paid elsewhere
• You generally don’t pay more than the highest rate
• Reciprocity agreements can simplify some situations
• Consider a travel nurse CPA for complex situations
• Keep documentation of which days worked where