What You Need to Know About Community Property States
By Personal Finance DeskUpdated Nov 10, 2026
Key takeaways
- Nine states use community property: Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington and Wisconsin.
- Gifts, inheritances and assets owned before marriage generally stay separate unless mixed beyond tracing.
- Idaho, Louisiana, Texas and Wisconsin generally treat income earned by separate property as community property.
- At a spouse's death, both halves of community property generally get a step-up in basis, not just one half.
A community property state treats most income, property and debt that either spouse acquires during the marriage as belonging to both spouses equally, no matter whose name is on the paycheck or the title. Nine states follow this system: Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin. The rest of the country uses common law property rules, and a handful of those states let couples opt into community property by agreement or trust.
The label matters most at three points: divorce, the death of a spouse, and tax filing. It does not change who can use or manage an asset day to day. It changes who legally owns it.
What community property means in a marriage
Under community property rules, the marriage itself is treated as an economic partnership. From the wedding date until a legal separation (or divorce, depending on the state), the “community” acquires what either spouse earns. If one spouse earns a salary and the other earns nothing, the salary is still community income, owned half by each.
The system comes from Spanish and French civil law rather than English common law. Wisconsin adopted it in the 1980s through the Uniform Marital Property Act, and its statute uses the term “marital property” for what other states call community property.
Registered domestic partners in California, Nevada, and Washington are also covered by those states’ community property laws.
What counts as community property
In all nine states, anything acquired during the marriage is presumed to be community property unless a spouse can show it is separate. That typically includes:
- Earned income of either spouse (wages, salary, self-employment income), known as community income
- Property bought with community income, such as a house, car, or brokerage account
- Retirement and savings contributions made from earnings during the marriage, even in an account held in one spouse’s name
- Debts incurred during the marriage, which reduce the net community estate to be divided
Separate property generally includes:
- Assets either spouse owned before the marriage
- Gifts and inheritances received by one spouse, even during the marriage
- Property acquired after a legal separation
- Debts a spouse brought into the marriage
When an asset was bought with a mix of community and separate money, only the share paid with community funds is treated as community property (see Example 3 below).
Income from separate property
The states split on one point that can be worth real money: income generated by separate property. In Idaho, Louisiana, Texas, and Wisconsin, income from separate property (rent from a premarital rental house, dividends on inherited stock) is generally community property. In Arizona, California, Nevada, New Mexico, and Washington, that income generally stays separate. The underlying asset stays separate in all nine states; only the treatment of its earnings differs.
Commingling
Separate property can lose its separate character if it is mixed with community funds so thoroughly that it can no longer be traced, as when an inheritance is deposited into a joint checking account used for household bills. Keeping inherited money in a separate account in one spouse’s name, with records of where it came from, makes the separate claim easier to prove.
How property is divided at divorce
In community property states, the community estate is commonly split equally, and sometimes jointly owned assets such as a house must be sold so the proceeds can be divided. California requires an equal division of community property. Texas directs courts to make a “just and right” division, and other community property states use equitable standards that let a judge depart from an exact 50/50 split in some circumstances. Separate property is generally confirmed to the spouse who owns it.
Community property vs. common law property
Most states use the common law system. Under common law, the spouse whose name is on the title or account generally owns the asset during the marriage. If one spouse buys a boat and titles it in their own name, it is theirs.
At divorce, common law states apply equitable distribution. The court divides marital property in a way it considers fair, weighing factors such as each spouse’s education, employability, current and future earnings, financial needs, age, and health. Equitable does not mean equal; one spouse may receive more than half.
| Community property | Common law (equitable distribution) | |
|---|---|---|
| Ownership during marriage | Both spouses own acquisitions equally | Titled owner generally owns the asset |
| Divorce split | Commonly equal, with state-specific exceptions | Divided by what the court finds fair |
| Name on title | Does not decide ownership of community assets | Strong evidence of ownership |
| States | 9 states | All others (some allow opt-in) |
Opt-in community property states
Alaska, Florida, Kentucky, South Dakota, and Tennessee remain common law states by default. Each allows married couples to elect community property treatment for some or all of their assets, typically by signing a written agreement or transferring assets into a community property trust that meets the state’s requirements. Couples usually consider this for the tax treatment at death described below, though an election can affect a divorce as well.
Moving or owning property in more than one state
The character of property is generally fixed by where the couple was domiciled when it was acquired, and by the source of the money used to buy it.
- Property bought in a community property state with income earned while domiciled in a common law state is generally not community property.
- Property bought anywhere with income earned while domiciled in a community property state is generally community property, even if the asset sits in a common law state.
For tax purposes, the IRS looks at your domicile, meaning your permanent legal home, judged by factors such as citizenship, where you pay state income tax, where you vote and where you live most often.
Couples who move into a community property state can find that the new state reaches some of their earlier assets anyway. California, for example, treats property acquired elsewhere that would have been community property had the couple lived in California as quasi-community property, which is divided like community property at divorce.
Prenuptial and postnuptial agreements
A valid prenuptial agreement normally overrides the default community property rules. Couples can agree that each spouse’s earnings remain separate, that a business stays with the founding spouse, or that assets will be divided in proportions other than 50/50. As long as the agreement was properly made and does not violate state or federal law, courts generally enforce it. Postnuptial agreements signed during the marriage can also change the character of property, though states impose formal requirements for these transfers between spouses.
Tax considerations
Couples who file jointly report all their income on one return, so community property rules have little effect. On married filing separately returns, each spouse in a community property state generally reports half of the community income plus all of their own separate income, regardless of who earned the wages. They attach IRS Form 8958 to allocate income between the two returns, under the rules in IRS Publication 555. Investment income, Social Security benefits, and deductions such as mortgage interest can all require allocation under state law.
Tax professionals often recommend calculating the tax both ways. The savings from filing separately are frequently small, though income-driven student loan repayment or one spouse’s large medical expenses can change the result.
Death brings a significant federal tax difference. When a spouse dies, both halves of community property generally receive a step-up in cost basis to fair market value, not just the deceased spouse’s half. In a common law state, jointly owned property usually gets a step-up only on the decedent’s share. The surviving spouse already owns their half; the deceased spouse’s half passes by will, beneficiary designation, survivorship arrangement, or state intestacy law.
Examples
Example 1: Salary and savings
Hypothetical. A couple in Arizona marries. One spouse earns $90,000 a year and saves $10,000 annually into a 401(k) in their own name; the other has no earnings. After five years they divorce. The $50,000 in contributions (plus growth on them) is community property, so each spouse has a claim to half, even though only one name is on the account. A divorce split of a 401(k) typically requires a qualified domestic relations order.
Example 2: Inheritance and a joint account
Hypothetical. A Texas spouse inherits $100,000 and keeps it in a separate account. The principal stays separate property. Because Texas treats income from separate property as community, the interest and dividends it earns during the marriage are generally community property.
Example 3: A house with mixed funding
Hypothetical. A California spouse buys a home before marriage, then the couple pays down the mortgage from joint wages for ten years. The home started as separate property, but the community gains an interest from those payments. At divorce, that community share is calculated under California’s rules and divided, while the rest stays with the original owner.
Why it matters
Living in a community property state affects more than divorce. Debts taken on by one spouse during the marriage may be treated as community debts, which can expose community assets to that spouse’s creditors. Some mortgage programs, such as FHA loans, count a non-borrowing spouse’s debts when the borrower lives in a community property state.
Neither system is better for everyone. Community property tends to favor the lower-earning spouse at divorce and simplifies the question of who owns what; common law gives a titled owner more control and leaves division to a court’s judgment.
FAQs
Is New York a community property state?
No. New York uses equitable distribution, as do New Jersey, Pennsylvania, Minnesota, Missouri, Iowa, Indiana, and every other state outside the nine community property states.
Does the federal government set community property rules?
No. Each state writes its own marital property law. Federal agencies such as the IRS apply those state rules when deciding, for example, how income is reported on separate returns.
The Bottom Line
Married couples and registered partners who live in, move to, or own assets in a community property state should know how these rules shape divorce, death and taxes. Keeping inherited money in its own documented account, considering a prenuptial or postnuptial agreement, and running married filing separately numbers both ways can protect separate claims and avoid surprises. Couples in opt-in states may weigh an election mainly for its tax effect at death.
