Quick Answer: A postnuptial agreement in Israel is a written financial agreement made between spouses after the wedding. Under Section 2 of the Spouses (Property Relations) Law, 5733-1973, the agreement must be approved by the Family Court or Rabbinical Court to become binding. Couples use postnuptial agreements to separate assets they wish to keep distinct, to protect a family business, or to rearrange the default equal-sharing rule before a divorce arises. A privately signed document without court approval has no legal force.

Most foreign nationals who settle in Israel are familiar with prenuptial agreements, contracts signed before the wedding that set out how finances will work during and after a marriage. What fewer people know is that Israeli law also recognises the postnuptial agreement: a financial arrangement made by spouses who are already married. The mechanism is the same as a prenuptial contract, but the timing is different, and a few additional rules apply because the couple is no longer in the same bargaining position they occupied before the wedding.

Below is a practical explanation of what a postnuptial agreement (*heskem mamon bein batei zug*) covers under Israeli law and what the court approval process actually involves. The intended readers are foreign nationals, new immigrants, and dual-national couples who married without any Israeli-law financial arrangement in place.

1. What Is a Postnuptial Agreement Under Israeli Law?

Israeli family law treats prenuptial and postnuptial agreements through the same statutory framework: the Spouses (Property Relations) Law, 5733-1973 (*Chok Yehassei Mamon bein Batei Zug*). Section 2 of that law states that spouses may enter into a financial agreement (*heskem mamon*) to arrange their property rights with respect to each other. The law does not restrict when this agreement can be made. It can precede the wedding or follow it by decades.

Without any such agreement, couples who married in Israel after January 1, 1974, or who were domiciled in Israel at the time of their marriage, fall under the default *resource-balancing regime* (*izun mishabe*) set out in the same law. Under this regime, each spouse holds their assets independently during the marriage. On divorce or death, both spouses are entitled to an equal share of the joint marital estate: the assets accumulated by both spouses during the course of the marriage, excluding inheritances and gifts kept separate.

A postnuptial agreement can depart from this default in any direction: it can provide for more equal sharing, for full separation of assets, or for a hybrid arrangement tailored to the couple's specific situation.

In Practice: Many foreign nationals who made aliyah under the Law of Return, 5710-1950, arrive as a couple with assets built up over decades in the UK, US, or elsewhere. They did not sign an Israeli-law prenuptial agreement because they had no Israeli property at the time. Five years later, one spouse has started a successful business in Tel Aviv worth NIS 3.5 million, while the other works part-time and has minimal Israeli savings. Under the default resource-balancing regime, both spouses are entitled to an equal share of that business on divorce, a result neither may have anticipated. A postnuptial agreement approved by the Family Court (*Beit Mishpat LeInyanei Mishpacha*) can carve the business out of the shared pool, ring-fence the pre-aliyah foreign assets, and spell out exactly what "marital" means for this couple. It is not a declaration of distrust. It is a legal clarification that removes a major source of uncertainty from the marriage.

2. Why Married Couples Enter Into Postnuptial Agreements

The reasons vary considerably, but the most common situations I see in practice are:

  • One spouse starts a business after marriage. An entrepreneur who launches a startup or a professional practice after the wedding typically does not want a future divorce to result in their business partner having a court-mandated claim on half the company. A postnuptial agreement can exclude business assets from the shared pool or set a fixed buyout formula.
  • An inheritance is received. Under the default regime, inheritances received during the marriage are excluded from the shared pool, provided they are kept separate. In practice, mixing inherited money with joint accounts or marital assets erodes the separation. A postnuptial agreement can formally designate inherited funds as separate, regardless of how they were handled.
  • One spouse takes on significant debt. Where one spouse is taking on business borrowings or guaranteeing corporate obligations, the other may want their personal assets protected from future enforcement action. A postnuptial agreement that separates the spouses' estates reduces (though does not eliminate) the other spouse's exposure.
  • Children from a previous relationship are involved. A parent who wants to preserve specific assets (a property, an investment account) for children from a prior marriage can use a postnuptial agreement to exclude those assets from the current marital pool. This is particularly relevant in blended families where estate planning and marital property planning need to align.
  • The couple married abroad with no Israeli-law arrangement. Couples who married outside Israel and then relocated here often had agreements tailored to UK, US, or other law that do not map cleanly onto the Israeli framework. A postnuptial agreement provides clarity about how Israeli law will treat their finances going forward.

3. Legal Requirements: What Makes a Postnuptial Agreement Valid in Israel

Section 2(b) of the Spouses (Property Relations) Law sets out the mandatory requirements for a financial agreement between spouses to be legally binding. These requirements are non-negotiable. An agreement that does not meet all of them is unenforceable.

The four requirements

  • Written form. The agreement must be in writing. Oral agreements, however clearly evidenced, carry no legal weight for this purpose.
  • Signed by both spouses. Both parties must sign the document. A signature by proxy (for example, under a power of attorney) is not accepted for the approval process.
  • Personal appearance before the court. Both spouses must appear in person before the Family Court (or Rabbinical Court) at the approval hearing. This requirement cannot be waived. Courts take it seriously as a safeguard against one spouse signing under pressure without the other's genuine participation.
  • Court approval (*ishur beit mishpat*). The agreement has no legal force until it is formally approved by the court. Approval is recorded in the court registry, and the agreement binds both parties from the date of approval, not the date of signing.
In Practice: A signed but unapproved postnuptial agreement is treated as having no legal effect in any subsequent Family Court or Rabbinical Court proceeding. This is not a technicality. It is one of the most common and costly mistakes foreign couples make. I have represented clients who believed they had a valid agreement, having signed a document prepared by their US or UK attorney, only to discover at the point of divorce proceedings that the Israeli court considers it unenforceable because the Section 2(b) approval requirement was never met. The approval hearing itself takes 20 to 40 minutes and costs approximately NIS 700 in court fees as of 2026. The cost of not doing it can run to hundreds of thousands of shekels.

What the court looks for at approval

Granting approval is not a rubber-stamp exercise. The judge must satisfy themselves that:

  • Both spouses signed voluntarily, without coercion or undue pressure
  • Both spouses had full disclosure of each other's financial position at the time of signing
  • Neither spouse was taken advantage of due to emotional vulnerability, financial desperation, or information asymmetry
  • The agreement is not manifestly one-sided in a way that suggests exploitation

Courts pay particular attention to cases where the couple filed for divorce shortly after the postnuptial agreement was signed, or where one spouse had significantly greater legal or financial sophistication. The approval process is a genuine legal examination, not a formality.

4. What Can (and Cannot) Be Included in a Postnuptial Agreement

Permitted subject matter

The law gives spouses broad latitude to arrange their financial affairs. A well-drafted postnuptial agreement can address:

  • Division of existing assets. The agreement can designate specific assets as belonging exclusively to one spouse. A property registered in joint names can be contractually allocated to one party, or the reverse.
  • Future assets and income. The couple can agree that income earned by each spouse during the marriage belongs to that spouse alone, departing from the default rule that treats accumulated savings as shared.
  • The scope of the equal-sharing rule. Couples can include or exclude specific asset categories from the equalization calculation. For example, they might agree that pensions and retirement funds will be divided equally while business assets are excluded.
  • Death-related provisions. The agreement can specify what the surviving spouse is entitled to receive on the death of the other, separate from any testamentary provisions. This matters because the Spouses (Property Relations) Law creates equalization rights on death as well as on divorce.
  • Debt allocation. The agreement can clarify which spouse is responsible for existing or anticipated debts, and whether one spouse's business liabilities can affect the other's personal assets.

Prohibited subject matter

Several topics fall outside the scope of any postnuptial agreement under Israeli law:

  • Child custody and guardianship. Courts retain exclusive jurisdiction over arrangements affecting minor children. A clause in an agreement that purports to pre-determine custody outcomes is void and will be disregarded.
  • Child support (*mezonot yeladim*). The law treats child support as a right belonging to the child, not the parent. Parents cannot contract away the child's right to financial support, nor can they fix the amount by private agreement beyond what a court would order.
  • Waiver of basic spousal maintenance during marriage. Under Jewish religious law principles that underpin Israeli family law, a spouse cannot entirely waive the right to basic subsistence maintenance while still married. Agreements that attempt to eliminate all maintenance entitlement for the duration of the marriage are typically set aside.
In Practice: One of the most useful things a postnuptial agreement can do for a foreign national who owns Israeli property is to fix the method for valuing that property on divorce. Under the default resource-balancing regime, the court appoints a court-certified property appraiser (*shuma'i*) and divides the value at the time of divorce. If the property has been renovated using funds from one spouse's foreign inheritance, the valuation dispute can become extremely contentious. A postnuptial agreement can instead specify that the property's value at a given reference date is treated as the separate contribution of one spouse, with only the appreciation since that date entering the shared pool. Courts approve these clauses routinely because they reduce litigation rather than encourage it.

5. The Court Approval Process: What to Expect

The approval process unfolds in four steps.

Step 1 — Drafting

The agreement is drafted by an Israeli attorney. Both spouses should ideally be represented by separate attorneys, particularly if the agreement creates significant asymmetry between them. A single attorney cannot properly advise both spouses when their interests may diverge. Drafting typically takes one to three weeks, depending on the complexity of the financial arrangements involved.

Step 2 — Filing

The signed agreement, together with an application for approval, is filed with the Family Court in the district where the couple resides. The filing fee as of 2026 is NIS 700 (approximately). For Jewish couples who prefer Rabbinical Court approval (an option explicitly preserved by Section 2(b)), the application goes to the regional Rabbinical Court (*Beit Din Rabbani Eizori*) instead.

Step 3 — The hearing

A hearing date is set, typically within 30 to 60 days of filing. Both spouses attend in person. The judge will ask each spouse whether they signed willingly, whether they understood the financial consequences, and whether they had independent legal advice. The hearing runs 20 to 40 minutes for a straightforward agreement. It is mandatory and cannot be waived or conducted by video conference.

Step 4 — Registration and effect

Once approved, the agreement is stamped and registered in the court's records. The approval carries the full force of a court order. The agreement binds both parties from the date of the approval stamp, not the date of signing. Keep a certified copy; you may need to produce it before the Execution Office (*Lishkat Hahotzaa Lepoal*) or in a future court proceeding.

6. Modifying or Cancelling a Postnuptial Agreement

A postnuptial agreement is not permanent. Section 2(d) of the Spouses (Property Relations) Law permits spouses to modify or cancel a previously approved financial agreement, but they must follow exactly the same procedure as the original. That means a new written agreement, both spouses' signatures, personal appearance at a hearing, and court approval.

Courts will approve a modification if both spouses appear willing and the change does not compromise the interests of children or creditors. Where one spouse is seeking to unilaterally set aside an agreement on the basis that circumstances have changed materially, or that they signed under pressure, they must bring a substantive legal proceeding, not simply file a new application.

In Practice: I regularly see couples who signed a separation-of-assets agreement early in their marriage, then spent 15 years intermingling their finances, renovating a jointly-used property with both spouses' funds, and maintaining joint bank accounts. By the time they reach divorce, the original agreement bears little relationship to how they actually lived. Israeli courts take a practical view: where the conduct of the parties over time plainly contradicts the written agreement, courts have found that the agreement was informally abandoned and reverted to the statutory default. Under Sections 2(c) and 2(d), a court can decline to enforce an agreement where enforcement would be inequitable given the parties' subsequent conduct. This outcome is avoidable. Review your financial agreement every three to five years and formally amend it if the factual position has changed significantly.

7. Foreign Couples and International Considerations

Foreign nationals who married outside Israel and who now live here face a specific challenge: they entered their marriage under a foreign legal system, possibly with a prenuptial or marital agreement drafted under English, American, French, or other law. That agreement was not approved by an Israeli Family Court and may not comply with Israeli law standards.

Choice of law

When a couple with a foreign marital agreement divorces in Israel, the court must decide which country's law governs the agreement. Israeli private international law generally applies the law of the country in which the couple was domiciled when the agreement was made. If they were living in New York when they signed a prenuptial agreement, New York law likely governs its validity. But if they have since relocated to Israel and both spouses were domiciled in Israel for an extended period, an Israeli court may apply Israeli standards to assess whether the agreement meets the Section 2(b) requirements.

Practical risk for foreign nationals

A foreign marital agreement that was valid in its country of origin may not produce the outcomes either spouse expects when tested before an Israeli Family Court. The court will look at whether the equivalent of the Section 2(b) protections were present: was there voluntary consent? Was there financial disclosure? Was each party independently represented? If the foreign process lacked these safeguards, the agreement may be partially or fully set aside.

The safest approach for a foreign couple who intends to remain in Israel long-term is to have their foreign marital agreement reviewed by an Israeli family law attorney, and if appropriate, to enter into a new postnuptial agreement that complies with Israeli law requirements and is approved by the Family Court. This replaces the uncertainty of a cross-border enforceability question with a court-approved document that Israeli courts will honour.

In Practice: A common scenario involves British-Israeli dual nationals who made aliyah after 15 years in the UK. They signed a cohabitation or marriage agreement under English law but never obtained Israeli Family Court approval. If the marriage ends and divorce proceedings are brought in Israel, the Israeli court is not bound by the English agreement. It may consider it as evidence of the parties' intentions, but it will apply the Spouses (Property Relations) Law, 5733-1973 as the primary framework. For a couple whose combined Israeli assets include an apartment worth NIS 4.5 million and a pension fund, the gap between what their English agreement said and what the Israeli default rules provide can be enormous. An Israeli postnuptial agreement, approved under Section 2(b), resolves this entirely.

Apostille and translation requirements

Where a foreign agreement is being brought before an Israeli court for recognition, it must be translated into Hebrew by a certified court translator (*metargem meushan*). If the document originates from a Hague Convention country, it should carry an Apostille certificate. Israel is a signatory to the Hague Convention Abolishing the Requirement of Legalisation for Foreign Public Documents (Convention of 5 October 1961). For countries outside the Hague Convention, consular certification through the Israeli Ministry of Foreign Affairs may be required.