The Filing Date Decides What Gets Divided in a New York Divorce

Two spouses separate in March. One of them files for divorce the following January. In the ten months between those dates, the higher earner puts $60,000 into a brokerage account and the couple’s apartment rises $80,000 in value. Which of that is divisible, and which belongs to one spouse alone, turns almost entirely on a date most people treat as an administrative detail.

In New York, the day a matrimonial action is commenced is the line that separates marital property from separate property. It is the single most consequential date in the case, and it is one of the few that a party can actually choose.

The line the statute draws

Domestic Relations Law § 236(B)(1)(c) defines marital property as all property acquired by either or both spouses during the marriage and before either the execution of a separation agreement or the commencement of a matrimonial action. Everything on the far side of that line is presumptively marital and subject to division. Everything acquired after it is presumptively separate.

Two things follow from the wording that surprise people. The first is that the marriage does not end for property purposes when the couple stops living together. A separation, however final it felt, does not stop the clock. Income earned, bonuses paid, retirement contributions made and debts incurred during a long separation remain marital until somebody either signs a separation agreement or files.

The second is that commencement has a precise meaning. A matrimonial action in New York is commenced by filing a summons with notice, or a summons and complaint, with the county clerk. Not by serving your spouse, not by retaining a lawyer, not by sending a letter announcing your intentions. The filing is the act that stops the clock, and the date stamped by the clerk is the date the court will use.

Classification and valuation are two different dates

This is where most confusion lives. Commencement fixes what is marital. It does not fix what it is worth.

Under DRL § 236(B)(4)(b), the court may value marital assets as of any date from the commencement of the action through the date of trial, and it may use different dates for different assets in the same case. So an asset can be classified as marital on the filing date and then valued two years later at a number nobody anticipated.

The principle courts apply to choose among those dates turns on whether an asset’s change in value was active or passive. Assets whose value moves because of market forces — a retirement account, a portfolio, real estate in a rising market — are generally valued closer to trial, because neither spouse caused the change. Assets whose value moves because of what one spouse did — a business the titled spouse continued to build and run after filing — are generally valued at commencement, so that the working spouse keeps the benefit of post-filing effort.

The Court of Appeals set the foundation for this in Price v. Price, 69 N.Y.2d 8 (1986), holding that appreciation in separate property remains separate where it results from market conditions rather than the titled spouse’s efforts. Hartog v. Hartog, 85 N.Y.2d 36 (1995), refined the test, requiring the non-titled spouse to show that the titled spouse actively participated in producing the appreciation before any share of it becomes marital.

A worked example

A spouse owns a brokerage account worth $300,000 on the day the action is commenced. By the time the case reaches trial two and a half years later, it is worth $390,000. Nobody traded it; the market simply rose.

That $90,000 of growth is passive. A court valuing the account as of trial will divide $390,000, and the increase goes into the marital pot even though it accrued entirely after filing.

Change one fact. The same spouse owns a consulting practice valued at $300,000 at commencement, works it hard for the same two and a half years, and it is worth $390,000 at trial. That growth is active — the product of one spouse’s post-filing labour. A court is far more likely to value the practice at the commencement figure of $300,000 and leave the $90,000 with the spouse who generated it.

Same starting value, same ending value, same elapsed time, and a $90,000 difference in what gets divided. The variable is not arithmetic; it is the character of the growth.

What else the filing date switches on

Commencement does more than classify property. On filing, New York’s automatic orders take effect and bind both spouses for the life of the case, without anyone having to ask a judge for them.

Broadly, they stop either spouse from transferring, selling, encumbering or otherwise disposing of property outside the ordinary course of business or the usual needs of the household; from taking out loans against marital assets except to pay for legal fees or ordinary expenses; from changing the beneficiaries on life insurance, retirement accounts and similar instruments; and from dropping the other spouse or the children from existing health, auto or homeowners coverage.

These are court orders, and violating them carries the consequences that attach to violating any order. Their practical effect is that the estate stops moving on the filing date — which is the other reason the timing of a filing matters when one spouse suspects the other is repositioning assets.

Marital debt follows the same line

The cut-off applies to liabilities as well as assets. A credit card balance run up during the marriage and before commencement is generally marital, whoever’s name is on the card. A balance built up after filing is generally the responsibility of the spouse who incurred it.

This catches people who continue putting household costs on a joint card for months after the case is filed, on the reasonable assumption that a shared expense is a shared debt. The date, not the purpose, does the classifying.

Where this goes wrong

Post-filing income lands in a joint account

Salary earned after commencement is separate property. Deposited into a joint account and mixed with marital funds, it can lose that character through commingling, and the spouse claiming it is separate carries the burden of tracing it. The fix is unglamorous and effective: open a new individual account on the day of filing and route post-commencement earnings into it.

The bonus earned before, paid after

Compensation is classified by when it was earned, not when it landed. A bonus for the prior year’s work, paid in March to a spouse who filed in January, is not automatically separate because the deposit postdates the filing. The same logic reaches deferred compensation, unvested equity and commissions on work already completed. These are among the most frequently mishandled assets in a New York divorce, and the analysis requires the plan documents, not a bank statement.

The mortgage gets paid down with separate money

A spouse who stays in the marital home and pays the mortgage from post-commencement income is reducing a marital debt with separate funds. That may support a credit at distribution, but only if it is tracked. Spouses who make those payments for two years without documenting them routinely discover there is no record to argue from.

Filing is delayed while assets are spent

Because the clock does not stop at separation, a long informal separation leaves the eventual marital estate exposed to whatever the other spouse does with it in the meantime. New York does recognise wasteful dissipation of marital assets as a factor at distribution, and automatic orders restricting the transfer of assets attach once a case is filed — but neither helps with money already gone before anyone went to the clerk. Where dissipation is a live concern, the filing date is a protective measure, not a formality.

The separation date is treated as the cut-off

This is the error underneath most of the others. Couples who separated years earlier arrive at a first consultation describing assets acquired during the separation as “mine,” having never filed anything. Under the statute they are usually marital. The remedy available at that point is a valuation argument or an equitable-distribution argument, not a classification one, and it is a materially weaker position than filing would have been.

What this means in practice

If a marriage is ending and the financial picture is complicated, the filing date is a decision, not a formality — and it is one of the few levers available before any negotiation starts. That does not mean racing to the courthouse is always right; a well-timed divorce filing depends on what the estate looks like, what is likely to change, and whether a negotiated separation agreement would serve better.

What it does mean is that the date should be chosen deliberately, with the asset picture in front of you. Anyone weighing how the marital estate will be divided should understand how equitable distribution treats the property on each side of that line before the line is drawn.

Frequently asked questions

Does the divorce clock stop when we separate?

No. For property purposes the marriage continues until a separation agreement is executed or a matrimonial action is commenced. Living apart, however long, does not by itself convert later-acquired property into separate property.

What exactly commences the action?

Filing a summons with notice, or a summons and complaint, with the county clerk. Service on your spouse comes afterward and does not set the date.

Is my salary after filing still marital?

Generally no. Income earned after commencement is presumptively separate — but it can lose that protection if it is commingled with marital funds and cannot be traced.

Which date will the court use to value our house?

Most often a date near trial, because residential real estate usually appreciates passively. If one spouse renovated the property after filing, that argument changes.

Is debt my spouse ran up after we separated my responsibility?

If the debt was incurred before the action was commenced, it is generally marital regardless of whose name is on the account, even if the couple had already separated. If it was incurred after filing, it generally belongs to the spouse who took it on. How that debt is ultimately allocated is still an equitable-distribution question, and a court can weigh what the money was spent on.

Can we agree on a different cut-off date?

Yes. Parties regularly agree to a valuation or cut-off date in a stipulation or separation agreement, and courts generally honour a clearly drafted agreement. The statutory rule is the default that applies when there is no agreement.

A note on this article

This article describes New York law in general terms and is not legal advice. How commencement and valuation dates apply depends on the specific assets in a marriage and how they were held. If you are weighing when to file in Queens or elsewhere in New York City, Aronov Law NY can review the asset picture with you before the date is set.