If a spouse owned a business before marriage, the business usually starts as separate property. But if it increased in value during the marriage, California courts may treat part of that growth as community property.
Courts usually use the Pereira formula when the business grew primarily because of a spouse’s work, skill, and effort during the marriage, and the Van Camp formula when the business grew mostly because of the business itself, such as its capital, structure, market position, or workforce, rather than because of one spouse’s labor.
The main question is what caused the growth.
You own a business. You started it before you got married, built it through years of effort and risk, and watched it grow into something substantial. Now your spouse is claiming a share of that growth.
Or you are on the other side. You supported a spouse who ran a business throughout your marriage. You managed the household, made sacrifices, and in many cases worked directly in that business. The company is worth considerably more today than it was on your wedding day. Now you are hearing that it was always “separate property” and you have no meaningful claim to it.
California law does not treat either of those positions as the full answer. A business owned before marriage may begin as separate property, but that does not automatically mean all of its growth stays separate.
At the same time, courts do not simply divide all of the increase down the middle. Instead, California courts use the Pereira and Van Camp formulas to decide how much of the growth during marriage belongs to the community and how much remains separate property.
If a business is part of your divorce, this analysis can significantly affect the financial outcome.
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Why a Pre-Marital Business Is Not Always a Simple Separate Property Issue
Under California Family Code section 760, everything acquired during a marriage is presumed community property. Section 770 establishes the exceptions: property owned before marriage, and property received by gift or inheritance, is separate property.
On top of these basic rules, couples can also sign prenuptial agreements, postnuptial agreements, or written property agreements that change how specific assets are treated, so certain property or future earnings stay one spouse’s separate property even if they are acquired or grow during the marriage.
In many cases, that means the owner spouse’s own labor in running and growing the business during the marriage. Under California law, the fruits of marital labor (the earnings and value created by a spouse’s work during the marriage) are generally treated as community property, which is why the community may have a claim to part of the increase in value even though the business itself began as separate property.
In some cases, the other spouse’s direct work, support, or sacrifices may also matter to the overall factual picture.
So the real question is usually not whether the business started as separate property. The real question is how much of the growth during the marriage should be treated as community property.
This is exactly the problem the Pereira and Van Camp formulas are designed to help courts decide.
Community Property vs. Separate Property in California: What’s the Difference?
Read NowThe Pereira Formula
The Pereira formula is used when a separately owned business grew during the marriage mainly because of the owner spouse’s work, skill, and effort. Even though the business began as separate property, the growth tied to that marital labor may be treated in whole or in part as community property.
The idea behind the formula is straightforward. A separately owned business is allowed to earn a reasonable return as separate property. But if the business grew beyond what the original capital likely would have produced on its own, that extra growth may be treated as community property because the increase was driven by marital effort.
Pereira v. Pereira (1909) 156 Cal. 1
In Pereira itself, the husband entered the marriage already owning a very profitable saloon and cigar business as his separate property. During the marriage, the business continued to generate substantial gains, and the dispute was whether those gains should all be treated as community property. Later California decisions describing Pereira explain that the trial court had allocated all of the post-marriage gains to the community.
The California Supreme Court said that result went too far. The court held that the husband’s separate capital had to be credited first, because some of the profits came from the capital invested in the business, not just from his labor.
The court therefore held that the husband was entitled to his original separate property interest plus a fair return on it, and that the remaining growth could be treated as community property because it resulted from his efforts during the marriage.
In practical terms, the formula works like this: start with the value of the business at the time of marriage, add a reasonable return on that amount over the course of the marriage, and treat that total as the separate property share. Any growth beyond that amount may be treated as community property.
Example:
A spouse owns a business worth $300,000 when the marriage begins. By the time of divorce, many years later, it is worth $900,000. The court gives the separate estate the original $300,000 plus a reasonable return on that amount. If that return is $180,000, the separate property share is $480,000. The remaining $420,000 may be treated as community property under Pereira.
Pereira does not use a fixed statutory rate of return. Courts look at the facts and financial evidence to decide what return is reasonable, which is why the rate is often disputed.
Courts tend to use Pereira where the owner’s direct involvement is what drives the business’s success. Common examples include professional practices and owner-operated businesses, such as law firms, medical practices, accounting firms, consulting businesses, and similar companies that depend heavily on the owner’s labor, judgment, or reputation.
Business Valuation in Divorce: When Your Ex Says the Company Is “Worthless”
Read NowThe Van Camp Formula
The Van Camp formula is used when a separately owned business increased in value during the marriage mainly because of the business itself, such as its capital, market position, or workforce, rather than mainly because of one spouse’s labor.
Under this approach, the community gets credit for the fair value of the spouse’s work during the marriage. The court estimates what that work should have been paid, subtracts any compensation the spouse already received and any family living expenses the business covered, and treats the rest of the business as separate property.
The logic is the reverse of Pereira. If the business would have grown much the same way even without the spouse’s personal efforts, the community does not get credit for all of that growth. Instead, the community is compensated for the spouse’s work, and the rest stays with the separate estate.
Van Camp v. Van Camp (1921) 53 Cal.App. 17
Van Camp v. Van Camp arose from a large seafood packaging company in California. The court found that the company’s growth came primarily from the nature of the business and its capital, not mainly from the spouse’s personal efforts. Giving the community a share of all of the appreciation would therefore have overstated what community labor actually produced.
Instead, the court treated the community’s share as the reasonable value of the spouse’s services, with the rest of the appreciation remaining separate property.
Van Camp is typically applied to cases involving larger or more capital-intensive businesses, such as manufacturing companies, corporations with significant assets, real estate holding companies, or businesses where outside market conditions and workforce scale drove much of the appreciation.
If a different but equally competent manager had run the business, would the results likely have been similar? If the answer is yes, Van Camp may be the better fit.
Example:
A spouse owned a manufacturing company before marriage. During the marriage, the company grew significantly in value. The spouse helped oversee the business, but the growth came largely from the company’s equipment, long-term contracts, expanding market demand, and the work of a large management team and staff.
If the court finds the business likely would have achieved similar growth under another competent manager, Van Camp may be the better fit. In that situation, the community may receive the reasonable value of the spouse’s services during the marriage, while most of the remaining growth stays separate property.
Key Differences Between Pereira and Van Camp
Pereira and Van Camp both address growth in a separately owned business during marriage, but they treat that growth differently depending on what caused it.
Pereira usually applies when the growth came mainly from a spouse’s work, skill, and effort, so the community may share in the increase that effort created.
Van Camp usually applies when the growth came mainly from the business itself, such as its capital, structure, or market position, so the community is paid for the value of the spouse’s work and the rest of the growth remains separate property.
How a California Court Decides Which Formula to Apply
There is no automatic rule directing a court to one formula or the other. In Beam v. Bank of America, 6 Cal.3d 12 (1971), the California Supreme Court confirmed that courts “have developed no precise criterion or fixed standard,” and that a court “may select whichever formula will achieve substantial justice between the parties.”
Beam framed the core question this way: was the chief cause of the business’s growth the capital invested in the separate property, or the personal activity, ability, and effort of the spouse?
If the spouse’s personal involvement was the main engine of growth, Pereira often produces the more just result. If the business’s assets, capital structure, scale, or market environment were the main cause, Van Camp is often more appropriate.
Trial courts have real discretion here, and that choice is not easily overturned on appeal. In Beam itself, the trial court used Pereira, and the Supreme Court did not disturb that decision even though another judge could reasonably have chosen a different method.
This is where forensic accountants and certified business valuators become indispensable. Both sides typically retain experts who present competing analyses of what drove the business’s growth. One expert argues the growth was owner-dependent, favoring Pereira. The other argues it was capital-dependent, favoring Van Camp. The court weighs the evidence and decides.
Courts may also use a hybrid analysis when a business grew for mixed reasons. Some businesses do not fit neatly into one category. A business may be capital-intensive but also highly dependent on the owner’s personal relationships, reputation, or specialized skill.
In that kind of case, forcing the facts into a single formula may not produce a fair result. Courts have discretion to apportion the growth between Pereira and Van Camp principles rather than using one exclusively.
How Division of Marital Property Works in California
Read NowReverse Pereira/Van Camp Scenarios
The usual Pereira and Van Camp analysis looks at one situation: when community effort helps grow a separately owned business. But the reverse can happen too. A spouse may put separate property money into a community business, or income from a separate property asset may flow into community property.
Here, the roles shift. It is the separate estate contributing to the community asset. When that happens, the separate estate may have a right to reimbursement or a claim to part of the value created by that contribution.
This reverse situation does not fit into Pereira or Van Camp as neatly as the more common scenario. For real property, California uses the Moore and Marsden framework to track and credit mortgage principal contributions by the community, and Family Code section 2640 may give a spouse a reimbursement right for traceable separate property contributions to the acquisition or improvement of community property.
For business assets, the analysis is often more fact-specific. If separate funds helped build a community asset during the marriage, the issue is usually analyzed through reimbursement, tracing, and characterization rules, with the exact framework depending on the type of asset involved.
In many divorces, the hardest fight is over what actually caused the business’s growth and which method produces a fair result under the facts.
Talk to a California Property Division Attorney Who Handles Business Cases
When a business is part of a divorce, the formula a court applies can represent hundreds of thousands of dollars for either spouse.
Whether you built a business before your marriage and want to protect what you invested, or you contributed years of community effort and want fair credit for that, the Pereira and Van Camp analysis requires experienced legal and financial guidance working together.
Schedule a case evaluation with our family law attorneys if you want to understand how these frameworks may apply to your situation.
