TL;DR: Florida law divides everything acquired during a marriage into two buckets: marital property subject to equitable distribution, and non-marital property that stays with the original owner. The line between them turns on timing, commingling, and intent, and the burden of proving something is non-marital falls squarely on the spouse claiming it.
The moment one spouse moves to file, the other starts moving assets. Not always with malice. Sometimes out of fear. Sometimes because they believe the house they inherited or the savings account they brought into the marriage is untouchable. It isn't, at least not automatically. Florida courts don't care what spouses believed. They care what the evidence shows. And when the evidence is thin, judges default to calling it marital. That default has cost more than one divorcing spouse the exact asset they thought was safely theirs.

The Statutory Starting Point: Everything Is Marital Unless Proven Otherwise
Florida Statute § 61.075 lays out a clean rule: marital assets and liabilities are those acquired or incurred during the marriage. Non-marital assets and liabilities are those acquired before the marriage, after the filing of a dissolution petition, or by non-interspousal gift, bequest, devise, or descent, provided they were not commingled or used to enhance marital assets. That last clause is where most battles are fought.
The statute presumes all assets and debts are marital. The spouse claiming an asset is non-marital carries the burden of proving it by clear and convincing evidence, a higher standard than the typical preponderance used in most civil disputes. That burden does not shift. If documentation is missing, memories are hazy, or accounts were merged over the years, the court will often treat the disputed asset as marital and subject it to equitable distribution.
How Commingling Erases the Line
Commingling happens when non-marital funds or property mix with marital funds or property in a way that makes them indistinguishable. Deposit an inheritance into a joint checking account used for household expenses, and that inheritance is now marital unless every dollar can be traced with forensic precision. Use non-marital cash to pay down a mortgage on a home titled jointly, and a portion of the equity becomes marital. Refinance a pre-marital home during the marriage and add a spouse's name to the deed, and absent a written agreement to the contrary, the entire property is likely marital.
Florida courts have repeatedly held that commingling transforms non-marital property into marital property when the original source cannot be traced or the funds were used for the benefit of both spouses. The doctrine is unforgiving. Good intentions do not preserve non-marital character. Documentation does. Without account statements, deposit records, and a clear transactional trail, the claim fails.
Special Assets and Passive Appreciation
A home purchased before the marriage remains non-marital if titled in one spouse's name alone, never refinanced, and never improved using marital funds. But if the home appreciates in value during the marriage due to market forces alone, passive appreciation, that increase remains non-marital. If the appreciation results from active effort, such as renovations funded by marital income or sweat equity contributed by either spouse, the increase becomes a marital asset subject to division.
The same principle applies to businesses, investment accounts, and retirement funds. A business started before the marriage may have grown significantly during it. If that growth resulted from marital labor or marital capital infusions, the enhanced value is marital. If the growth was passive, rent collected, dividends reinvested, market gains, the increase generally remains non-marital. The distinction matters enormously in high-net-worth cases, and proving the difference often requires forensic accountants and business valuators.
Interspousal Gifts and the Presumption of Joint Ownership
When one spouse gifts non-marital property to the other, or when non-marital property is titled jointly, Florida law presumes a gift to the marriage unless clear and convincing evidence shows otherwise. Retitling a pre-marital vehicle into joint names is treated as a gift. Adding a spouse to the deed of a separately owned home is treated as a gift. Opening a joint account with inherited funds is treated as a gift unless every withdrawal and deposit is documented and separated.
The presumption can be rebutted with evidence of intent. Signed agreements, affidavits executed contemporaneously with the retitling, or statements in writing that preserve the non-marital character of the asset can overcome the presumption. Verbal understandings and retroactive testimony rarely do. The time to document intent is the moment the asset changes hands, not years later when a divorce petition is filed.
Debts Follow the Same Rules
Non-marital liabilities exist under the same framework as non-marital assets. A credit card debt incurred before the marriage remains the responsibility of the spouse who incurred it, unless marital funds were used to pay it down, or unless the debt was used to benefit both spouses during the marriage. A student loan taken out before the wedding is non-marital. A home equity line of credit opened during the marriage to remodel the marital home is marital, even if only one spouse signed the note.
Courts assign responsibility based on who benefited from the debt and when it was incurred. Joint credit card accounts used for household expenses during the marriage create marital debt regardless of which spouse made the charges. Debts incurred to fund a spouse's gambling habit or extramarital affair may still be deemed marital if the couple's finances were otherwise commingled. The inquiry is fact-intensive and requires a full accounting of both income and expenditure throughout the marriage.
The Strategic Importance of Early Documentation
Divorces often turn on what can be proven, not what was understood. Spouses who enter a marriage with significant assets, expect an inheritance, or plan to keep certain property separate need to act before commingling occurs. A well-drafted prenuptial or postnuptial agreement is the cleanest tool. Short of that, maintaining separate accounts, avoiding joint titling, and preserving a paper trail for every non-marital transaction is essential.
For those already in the middle of a dissolution, the work shifts to reconstruction. Bank statements going back to the date of marriage, property records, gift letters, estate documents, and transaction histories all become evidence. In cases involving complex asset division, failing to gather and organize this evidence early can mean losing the ability to make the claim at all. The burden is on the claiming spouse, and judges have little patience for incomplete records or vague assertions.
When disputes involve businesses, professional practices, or real estate portfolios, forensic analysis becomes necessary. Marital and non-marital components must be valued separately, and the enhancement or diminution of value during the marriage must be quantified. This is not work that can be done at the kitchen table. It requires expert testimony, detailed financial modeling, and often years of records. Cases involving these assets routinely hinge on which side presented the more credible and complete financial picture.

The courts draw the line using timing, tracing, and intent. Spouses who think their inheritance is safe because they kept it in a separate account may still lose it if marital funds paid the mortgage or if both names ended up on the deed. Spouses who assume their pre-marital home is untouchable may discover that years of joint payments, renovations, or refinancing turned it marital. The rules are clear. The evidence requirements are high. And the consequence of failing to meet them is equitable distribution of an asset that should never have been on the table.
Closing Remarks
If assets brought into the marriage have been retitled, inherited funds have been deposited into joint accounts, or a business or home has appreciated significantly during the marriage, the line between marital and non-marital property is already blurred, and proving it takes more than memory. Brandon Legal Group handles high-stakes property division in Florida divorces where documentation, tracing, and strategic presentation determine the outcome. Contact us to protect what should remain yours.
Frequently Asked Questions
Can an inheritance received during the marriage be considered non-marital property?
Yes, but only if the inheritance was kept entirely separate from marital assets. Depositing it into a joint account, using it to pay marital expenses, or adding a spouse's name to inherited property will almost certainly convert it to marital property. The key is maintaining a clear paper trail and avoiding any commingling with marital funds or jointly titled assets.
What happens if a home was purchased before the marriage but both spouses paid the mortgage?
The home itself may remain non-marital if it was never retitled and no marital funds were used for improvements. However, the portion of equity gained from marital mortgage payments or appreciation tied to those payments becomes a marital asset subject to equitable distribution. The spouse claiming the home as non-marital must prove the original down payment, the source of all mortgage payments, and any appreciation that occurred passively versus through marital contribution.
Does adding a spouse's name to a bank account automatically make it marital property?
In most cases, yes. Florida law presumes that retitling an asset into joint names constitutes a gift to the marriage unless there is clear and convincing evidence to the contrary. Written agreements signed at the time of retitling, affidavits documenting intent, or contemporaneous statements preserving the non-marital character of the funds can rebut the presumption; but verbal understandings or retroactive claims usually fail.
Can a business owned before marriage be divided in a Florida divorce?
The business itself may remain non-marital, but any increase in value during the marriage that resulted from marital effort or marital funds is subject to equitable distribution. If one spouse actively managed and grew the business during the marriage, the enhanced value is marital. If the business grew passively through market forces or third-party management with no marital contribution, the increase remains non-marital. Proving the distinction requires detailed financial records and often expert valuation testimony.
What is the burden of proof for claiming an asset is non-marital?
The spouse claiming an asset is non-marital must prove it by clear and convincing evidence, a higher standard than the preponderance of the evidence used in most civil cases. This means presenting credible documentation, tracing the source of funds, and demonstrating that the asset was neither commingled nor used to benefit the marriage. Without strong evidence, Florida courts will presume the asset is marital and subject it to equitable distribution.
Can debts incurred before marriage be assigned to the other spouse in a divorce?
Generally, no. Debts incurred before the marriage are non-marital liabilities and remain the responsibility of the spouse who incurred them. However, if marital funds were used to pay down the debt, or if the debt was incurred for the benefit of both spouses, a court may treat part or all of it as marital. The analysis depends on how the debt was used and whether it benefited the marital estate.
References
- Florida Statute § 61.075 (Equitable distribution of marital assets and liabilities).