What to know:

  • In community property states, most income, assets, and debts acquired during marriage are owned equally by both spouses by default, regardless of whose name is on them.
  • There are nine community property states, Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin, per IRS Publication 555 (rev. December 2024).
  • A spouse can become responsible for half of debts incurred during the marriage even if only the other spouse's name is on the account and even if they didn't know about it.
  • The 50/50 default removes individual control: either spouse can struggle to keep a business, equity grant, or inheritance fully separate once marital funds or effort get mixed in.
  • First helps couples in community property states build a prenup that sets their own rules for what stays separate, how debt is handled, and how assets are divided.

If you live in or are moving to a community property state, you may be wondering what that means for your money once you're married. The short answer: in community property states, most income, assets, and debts acquired during the marriage are owned 50/50 by default, which means you lose some individual control, you can share liability for a debt in only your spouse's name, and divorce splits property along a default formula that may not fit your situation. According to IRS Publication 555 (rev. December 2024), nine states follow this system. If you want a fuller walkthrough of how the system works, our guide to community property states covers the basics.

Community property has upsides too. It treats a marriage as a true financial partnership, and it can offer tax advantages, including a double step-up in basis on certain assets when one spouse dies. This post focuses on the downsides, because those are the ones most couples underestimate.

What are the disadvantages of community property?

The main disadvantages of community property are shared liability for debts taken on during the marriage, loss of individual control over assets you think of as your own, and a default that splits most marital property roughly 50/50 in divorce. Under California Family Code §760, property acquired by either spouse during marriage is presumed to be community property, meaning it belongs to both of you even when only one name is on the paperwork.

That presumption is the root of most of the friction. It means your paycheck, your partner's paycheck, the car one of you bought, and the credit card balance one of you ran up are generally treated as shared, regardless of who earned, bought, or borrowed. For couples who want their finances fully intertwined, that works. For couples where one partner has a business, a large inheritance, or significantly more debt, the default can produce outcomes neither of them would have chosen.

Which states use community property?

There are nine community property states: Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin, per IRS Publication 555 (rev. December 2024). If you live in or are moving to any of these, the 50/50 default applies to your marriage unless you agree otherwise in writing.

A few other states let couples opt in rather than imposing the system automatically. Alaska, South Dakota, and Tennessee allow couples to elect community property treatment by agreement or trust, which Publication 555 does not cover. Everywhere else uses equitable distribution, a different system where a court divides marital property in a way it considers fair rather than starting from a 50/50 presumption. Our state-by-state guide to prenuptial agreements breaks down how the rules shift across the country.

One detail that surprises people: the nine states don't even treat separate property the same way. Idaho, Louisiana, Texas, and Wisconsin treat income earned on most separate property as community income, while Arizona, California, Nevada, New Mexico, and Washington treat that income as separate, according to IRS Publication 555. So the interest your pre-marriage savings account throws off might be yours alone in one state and half your partner's in another.

Can I be responsible for my spouse's debt?

Often, yes. In community property states, debts incurred during the marriage are generally treated as shared, so you can be responsible for part of a debt even if only your spouse's name is on the account and even if you didn't know about it. The same community property presumption in California Family Code §760 that makes marital income shared also reaches debt taken on during the marriage.

This is the downside that catches couples off guard most often. A partner who runs up a credit card, takes out a business loan, or finances a large purchase can create an obligation that follows both of you. If one partner brings significant debt into the marriage or is likely to take on more during it, the community property default can leave the other partner exposed. This is one of the clearest cases where setting your own rules matters, and we cover it in detail in our post on what to do when one partner has debt.

Does community property mean I lose control of my own assets?

To a meaningful degree, yes. The 50/50 default removes individual control over assets you might consider entirely your own, especially a business, an equity grant, or an inheritance once marital money or effort gets involved. Separate property does exist: under California Family Code §770, what you owned before marriage, plus gifts and inheritances you receive during it, starts out as yours alone. The problem is how easily that separate status erodes.

Here is where commingling comes in, meaning the mixing of separate property with shared marital money so thoroughly that it loses its separate character and becomes community property. Deposit your inheritance into a joint account you both use for years, and it can become hard to argue it is still separate. Pour marital income and your own labor into a business you started before the wedding, and part of its growth can be classified as community property. The line between separate and community is not always obvious, and our guide to community property versus separate property walks through where that line sits.

The practical effect is that keeping something fully separate under default law takes constant discipline: segregated accounts, careful records, and no mixing of marital funds or effort. Few couples manage that perfectly over a long marriage.

Is everything split 50/50 in a divorce?

Not always. Some community property states require an equal division; others divide property in a way the court considers fair, and "equitable" doesn't always mean "equal." California mandates an equal 50/50 division of community property under Family Code §2550. Texas, by contrast, divides community property in a way the court deems "just and right" under the Texas Family Code, and Washington uses a "just and equitable" standard. The starting point is usually 50/50, but the outcome can vary.

That variation is a disadvantage of its own, because it introduces uncertainty. In the states that allow a court to weigh fairness, you cannot know in advance exactly how property will be split. And in every community property state, there is the question of characterization and valuation: deciding what counts as separate, what counts as community, and what each piece is worth. Fights over whether a business, a home, or an investment account is separate or shared, and over how much it is worth, can make divorce in these states expensive and contentious. The money and time spent arguing over those questions is itself a cost of the default system.

How does a prenup change the community property default?

A prenup lets couples in community property states opt out of the default and write their own rules for what stays separate, how debt is handled, and how assets are divided if the marriage ends. Instead of accepting the state's 50/50 presumption, you and your partner decide together, in advance, with full information. Our post on what a prenup protects covers the range of what you can address.

The table below shows how the default disadvantages shift once a couple signs a prenup.

Situation Default community property rule With a prenup
Income earned during marriage Owned 50/50 Can be kept separate by agreement
Debt one spouse takes on Can become a shared obligation Can assign responsibility to the spouse who incurred it
A business one spouse owns Growth and marital effort can make part of it community Can define what stays separate
An inheritance Can become community if commingled Can confirm it stays separate
Division at divorce Roughly 50/50, exact in some states Couple sets their own terms

A prenup cannot guarantee any particular outcome, since enforceability is decided by a court based on your state's rules and the circumstances when you signed. What a well-drafted agreement can do is make your intentions clear and help ensure separate property stays separate, so you are not relying on perfect recordkeeping to keep what you brought in. Because provisions like inheritance and separate-property waivers turn on how a court will read them, this is work to take through an attorney rather than a self-serve form, and First's attorney-involved options are built for exactly that. Couples increasingly use prenups for this reason, to set their own terms rather than inherit the state's, according to First's Prenup Report (2026). Without an agreement, default law decides, and our post on what happens if you don't have a prenup lays out what that means.

Frequently asked questions

What are the main disadvantages of community property?

The main downsides are shared liability for debts taken on during marriage, loss of individual control over assets you consider your own, and a default that splits most marital property roughly 50/50 in divorce. That default may not match what either spouse feels is fair for their particular situation, which is why many couples choose to set their own terms instead.

Am I responsible for my spouse's debt in a community property state?

Often, yes. In community property states, debts incurred during the marriage are generally treated as shared, so you can be responsible for part of a debt even if only your spouse's name is on the account and even if you didn't know about it. A prenup can change how debt is handled between partners.

Which states are community property states?

There are nine: Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin, per IRS Publication 555. A few other states, including Alaska, South Dakota, and Tennessee, let couples opt in to community property treatment through a written agreement or trust rather than applying it automatically.

Is community property always split exactly 50/50?

Not always. Some states, like California, require an equal division of community property. Others, like Texas and Washington, divide property in a "just and equitable" way, and equitable doesn't always mean equal. The starting point is usually 50/50, but outcomes vary by state and by the circumstances of each divorce.

Can you avoid community property rules?

Yes. A prenuptial agreement lets couples in community property states opt out of the default and decide for themselves what stays separate, how debts are handled, and how assets are divided if the marriage ends. Without one, state default law applies to your property and debt automatically.

Creating your prenup with First

If you live in a community property state, the default rules decide a lot for you unless you decide first. A prenup lets you and your partner set your own terms for what stays separate, how debt is handled, and how things are divided. No lawyering up, no surprises. If you're ready to put your own framework in place, First can help you build one on your timeline.

Methodology

These figures are drawn from IRS Publication 555, Community Property (revised December 2024), for the nine-state list and separate-property income rules, and from state family codes (California §§760, 770, and 2550 and the Texas Family Code) for how property and debt are classified and divided. The Prenup Report (2026) reflects First's own platform data on how couples use prenups.

Sources

First is not a law firm. The information and tools provided by First on this site are not legal advice and not a substitute for the advice of an attorney.