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California — No Day-Count Residency Test (Bounded's 45-Day Warning Level)

The Bounded TeamTax residencyOctober 2026

Part of the guide Florida vs Texas vs Nevada (and South Dakota): Establishing Domicile

Summary

Bounded indicator
45 days / calendar year
Type
Bounded's own warning level — not a legal threshold
Legal test
Purpose of presence + domicile; closest connections
Presumption
Resident if in CA more than nine months (R&TC §17016)
Resident effect
Income from all sources taxed
Authority
California Franchise Tax Board (FTB)

Outside a narrow employment-contract safe harbor, California has no number of days that makes you a nonresident. You are a resident if you are in California for other than a temporary or transitory purpose, or if you are domiciled there and away only temporarily — and the FTB weighs your closest connections to decide. The only general day count in the law is a presumption of residency after more than nine months in the state. Bounded flags 45 days in a calendar year as its own conservative warning level, not a legal threshold: staying at or under it keeps your California time small, but it does not guarantee that the FTB will accept a nonresident position.

Who it applies to

This matters most if you are:

  • A remote worker or frequent traveler who spends meaningful stretches of the year in California.
  • Someone who has moved out of California but still keeps a home, family, or business interests in the state.
  • A high earner leaving California, where the state has a strong incentive to argue you never truly left.

It applies to individuals regardless of citizenship or immigration status — California residency is about where your life is centered, not your nationality or visa.

The rule — and why it exists

FTB Publication 1031 sets out the statutory definition: a resident is anyone in California for other than a temporary or transitory purpose, or anyone domiciled in California who is outside the state for a temporary or transitory purpose. An indefinite job assignment, retiring to California with no specific plans to leave, or an indefinite recuperation makes you a resident; a vacation, completing a transaction or passing through does not. Where you have ties to more than one state, the FTB looks at where your closest connections are — weighing the strength of the ties, not just their number. Publication 1031's factors include:

  • Home: the location of your principal residence, and of your real property and investments.
  • Family: where your spouse or registered domestic partner and your children are.
  • Work: how permanent any work assignment in California is, and the state where you hold professional licenses.
  • Other ties: driver's license, vehicle and voter registration, bank accounts and where your financial transactions originate, doctors and other professionals, social ties such as clubs and places of worship, and the time you spend in California compared with elsewhere.

Where 45 days comes from: the number comes from the safe harbor for Californians working outside the state under an employment contract (R&TC §17014(d), restated in Publication 1031), where return visits totalling no more than 45 days in a taxable year are disregarded. It is not an audit threshold — the FTB has published none. Bounded borrows it as its own conservative warning level, because few days in California is one of the facts that supports a nonresident position; outside the safe harbor it has no legal effect.

Counting the days

  1. 1Count the days you are physically present in California during the calendar year (1 January to 31 December).
  2. 2The tally resets to zero each 1 January — it is a fresh annual count, not a rolling window.
  3. 3Staying at or under 45 days keeps you within Bounded's warning level for that year. This is Bounded's marker, not a legal limit.
  4. 4More than nine months in California in a taxable year triggers the statutory presumption that you are a resident.
  5. 5At any count, California can still treat you as a resident if your purpose is not temporary or your domicile remains in the state.

Because the day count is only one factor, treat 45 days as one safeguard among many. A low count helps; it does not, on its own, prove you are a nonresident.

Examples

Example 1 — clean nonresident

You sold your California home, moved your family to Texas, changed your driver's license and voter registration, and now visit California for about 20 days a year on business. Your closest connections are in Texas and your presence is temporary — a strong nonresident position. You still owe California tax on wages for the days you work there.

Example 2 — few days, still resident

You spend most of the year traveling but keep your San Francisco apartment, your spouse and kids stay there, and your company is registered in California. Even at only ~30 days in the state, you remain a domiciliary who is away temporarily, and your closest connections are in California — the low day count does not save you.

Example 3 — over the marker, mixed ties

You split the year between California and Nevada, spending about 90 days in California with a home in each state. You are well over Bounded's marker but far from the nine-month presumption, so the outcome turns on which home, job, and family ties dominate.

Exceptions & edge cases

  • The employment-contract safe harbor (R&TC §17014(d)). A California domiciliary outside the state — anywhere, not only abroad — under an employment-related contract for an uninterrupted period of at least 546 consecutive days is treated as a nonresident, unless they have intangible income over $200,000 in any year of the contract or the principal purpose of the absence is to avoid tax. Return visits of no more than 45 days in a taxable year are treated as temporary, and an accompanying spouse or RDP is covered too.
  • Part-year residency. If you move into or out of California mid-year, you are taxed as a resident for the part of the year you lived there and as a nonresident for the rest.
  • Source income still taxed. Even as a clean nonresident, income sourced to California — such as wages for work physically performed in the state — remains taxable there.
  • Temporary or transitory purpose. Time in California for a vacation, a specific transaction or passing through does not make you a resident; time that reflects settling into the state does.

Common misconceptions

  • "Under 45 days means I'm safe." False — strong connections or a California domicile can still make you a resident with far fewer days.
  • "45 days is an FTB audit threshold." The FTB has published no such threshold. In its guidance, 45 days is the return-visit allowance in the employment-contract safe harbor.
  • "California is a 183-day state." No — there is no 183-day test. The statute's only day figures are the nine-month residency presumption, which cuts one way, and the 546-day/45-day employment-contract safe harbor.
  • "Cutting my days is enough to leave." Not by itself — you have to move your closest connections, not just reduce your visits.

Frequently asked questions

No. Outside the employment-contract safe harbor, no number of days decides California residency, and the FTB publishes no day count below which you are safe. The only 45-day figure in California's residency rules is in that safe harbor (Revenue and Taxation Code §17014(d)), where return visits totalling no more than 45 days in a taxable year are disregarded. Bounded uses 45 days as its own conservative warning level — it is not a legal threshold, and crossing it has no legal effect.

Yes. A California domiciliary who is outside the state only for a temporary or transitory purpose stays a resident on any number of days, and the FTB compares your closest connections — home, family, work, finances — to decide where you really live.

Two. Under Revenue and Taxation Code §17016, you are presumed a California resident for any taxable year in which you spend more than nine months in the state; the presumption is rebuttable and works only in one direction — spending less than nine months does not presume you are a nonresident. And under §17014(d), a California domiciliary who is outside the state under an employment-related contract for at least 546 consecutive days is treated as a nonresident, with return visits totalling up to 45 days in a taxable year disregarded.

A California resident is taxed on income from all sources. A nonresident is taxed only on California-source income, such as wages for work physically performed in the state.

The FTB does not publish a partial-day rule for residency. Because time in the state is one factor among many rather than a bright line, count any day you are physically in California, including arrival and departure days, and keep records of where you were.

By genuinely moving your closest connections out of the state — establishing a permanent home elsewhere, moving your family, and shifting registrations, licenses, and business ties. The FTB's own example: declaring residency in Nevada while keeping a California home where you spend six or seven months a year does not make you a Nevada resident.

This rule is tracked automaticallyinBounded

  • Automatically tracks your days for this rule
  • Alerts you before you cross the limit
  • Records border-crossing days in both countries
  • Runs alongside your other visa, tax, and residency rules
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Sources

Spot a mistake or an outdated rule on this page?

Related rules

Arizona — Nine-Month Residency Presumption270 days tracked (statute: more than nine months of the taxable year)
Connecticut — Safe Harbor (30-Day)30 days / year
Connecticut — Tax Residency Rule183 days / year
Delaware — Tax Residency Rule183 days / year
District of Columbia — Tax Residency Rule183 days / year
Hawaii — Tax Residency Rule200 days / year

For information only. This page is a plain-English summary of publicly available rules, not tax, legal, or immigration advice. Rules change and depend on your personal circumstances — always confirm with the official source above and a qualified professional before acting.