Prenuptial Agreements in Israel (Heskam Mamon): A Complete Guide for Couples and Foreign Nationals

International couples and olim making aliyah often arrive with a clear picture of what they own — an apartment in London, a business in New York, savings built up over decades — and a real concern about what Israeli law would do with those assets if the marriage ended. Israeli marital property law produces outcomes that differ significantly from most European community-of-property regimes and from the common-law equitable distribution approach used in many American states. Understanding the framework before the wedding is far cheaper than litigating it after.

This guide explains how the prenuptial agreement works under Israeli law, which court approves it, what it can protect, how foreign assets are treated, and what the default rules look like when couples skip the agreement entirely.

1. The Legal Foundation: Spouses' Property Relations Law 5733-1973

The statute governing marital property between spouses who married in Israel after January 1, 1974 is the Spouses' Property Relations Law 5733-1973 (חוק יחסי ממון בין בני זוג, hereinafter "the Property Relations Law"). Couples who married before that date are governed by older legislation and Rabbinical Court property doctrines, a separate topic beyond this guide.

The Property Relations Law creates a deferred community regime. During the marriage itself, each spouse owns their own property separately and can deal with it freely without the other's consent. The community element activates only at the end of the marriage, whether by divorce or death. At that point, a financial accounting takes place and the net resources accumulated by both spouses are equalized between them.

Section 2 of the Property Relations Law gives couples the freedom to modify this default regime by agreement. That agreement, the heskam mamon, can expand the equalization pool (for example, by including pre-marital assets), shrink it (by excluding certain business assets), or replace it entirely with a different arrangement such as complete separation of property with no equalization. The only limits are that the agreement cannot contract out of mandatory provisions, and it cannot include provisions about child custody, child support, or anything contrary to public policy.

2. The Default Rule Without an Agreement: Balance of Resources

If a couple divorces or one spouse dies without an approved heskam mamon in place, the Property Relations Law's default regime applies automatically. That default is called izun moshabim (איזון משאבים), translated as "equalization of resources" or "balance of resources."

The mechanics work as follows. When the marriage ends, each spouse prepares a statement of their net assets. Assets excluded by law are removed from each spouse's tally. What remains is the net resources each accumulated during the marriage. Those two figures are then averaged: the spouse who accumulated more transfers half the difference to the other.

The transfer is of value, not ownership. No spouse is automatically entitled to receive the other's actual property — an apartment, a business interest, a securities portfolio. They are entitled to receive cash or other assets equal to half the net surplus. In practice, this distinction matters enormously: if the higher-accumulating spouse's wealth is tied up in an illiquid business or real estate, the Family Court must decide how to satisfy the equalization payment, and that process can involve court-ordered valuations, forced sales, or installment payment plans.

3. What a Heskam Mamon Can and Cannot Cover

The heskam mamon is a flexible instrument. Within the limits of the Property Relations Law, couples can structure it to reflect almost any property arrangement they choose. Common provisions include:

• Full separation of property: Each spouse retains everything they own, with no equalization on divorce or death. This is the most common arrangement for couples where one party enters the marriage with substantially greater assets.
• Partial exclusion: Specific assets are carved out — a family business, a pre-marital apartment, shares received under an employee stock option plan — while everything else remains subject to the default equalization.
• Expanded community: Pre-marital assets or inheritance received during the marriage are brought into the equalization pool, giving the lower-earning spouse a share they would not receive under the default rules.
• Custom ratios: Instead of 50/50 equalization, the couple agrees on a different split, for example 70/30, or a sliding scale that changes based on the length of the marriage.
• Specific asset treatment: An apartment purchased with one spouse's family money is defined as remaining outside equalization permanently, including all future appreciation.

What the heskam mamon cannot include:

• Provisions determining child custody arrangements or restricting a court's discretion over them
• Waivers of child support, or agreements fixing child support at a set amount regardless of future circumstances
• Clauses that completely waive alimony in all circumstances — limited waivers for specific scenarios may be enforceable, but blanket alimony waivers are scrutinized closely by courts
• Terms that are unconscionable or that exploit one party's weaker bargaining position at the time of signing
• Provisions that violate Israeli mandatory law or public policy

4. Court Approval: Which Court and How It Works

Under Sections 2(b) and 3 of the Property Relations Law, a heskam mamon requires approval from one of two courts: the Family Court (Beit Mishpat LeMishpacha) or the Rabbinical Court (Beit Din HaRabanut). Both have concurrent jurisdiction to approve prenuptial agreements.

The choice depends on the couple's background and preferences. Jewish couples who anticipate that any future divorce would go through the Rabbinical Court — as all religious Jewish divorce proceedings in Israel do — often prefer Rabbinical Court approval, since the same body that will adjudicate the divorce will already be familiar with the agreement. Non-Jewish couples, interfaith couples, and couples where one partner is a foreign national typically use the Family Court, a secular civil court with no religious preconditions.

The approval process at the Family Court works as follows. Both spouses appear in person before a Family Court judge, usually at a dedicated hearing lasting 15 to 30 minutes. The judge reviews the agreement, asks each party whether they understood its contents, whether they signed freely without pressure, and whether they had the opportunity to consult an independent attorney before signing. If satisfied, the judge approves the agreement and issues an approval certificate. The agreement is then binding.

5. Foreign Couples and International Prenuptial Agreements

Foreign nationals who marry in Israel or who move to Israel after marrying abroad face two distinct questions: which country's law governs their marital property, and whether their existing foreign prenuptial agreement will be recognized by Israeli courts.

On the first question, Israeli courts generally apply the law of the country where the couple was domiciled at the time of marriage when adjudicating property disputes. A couple who married in France, lived in Paris for five years, and then moved to Tel Aviv is likely to have their marital property governed by French law, at least for assets accumulated before the relocation. Assets accumulated in Israel during Israeli residence may be subject to Israeli law. These split-applicable-law situations require careful analysis by an attorney familiar with both jurisdictions.

On the second question, Israeli courts will recognize a foreign prenuptial agreement if it satisfies Israeli substantive requirements: both parties acted freely, the agreement was in writing, and the terms are not contrary to Israeli public policy. An agreement waiving all equalization, which is permissible under Israeli law, will not be refused on substantive grounds. An agreement containing provisions Israeli courts consider manifestly unconscionable may be partially enforced, with the offending clause severed.

The practical recommendation for international couples relocating to Israel for the long term is to execute a fresh Israeli heskam mamon, even if they already hold a valid foreign prenuptial agreement. The Israeli agreement eliminates the cross-border recognition question entirely and gives each party certainty about what Israeli law says about their arrangement.

6. Signing After Marriage: Postnuptial Agreements in Israel

Section 2(a) of the Property Relations Law permits agreements made at any point during the marriage, not only before it. A postnuptial agreement follows the same formal requirements as a prenuptial: written, signed by both parties, and approved by the Family Court or Rabbinical Court at a hearing where both appear in person.

Postnuptial agreements arise in several practical situations. Couples who married without a prenuptial and then acquired significant assets — a successful business, an inheritance, a large property portfolio — sometimes reach an agreement about how those assets should be treated. Couples who were advised to sign a prenuptial but never completed the process before the wedding use a postnuptial to address the same concerns.

The Family Court scrutinizes postnuptial agreements more carefully than prenuptials in one specific respect: the court is alert to agreements signed while a couple is already experiencing serious marital difficulties. An agreement signed under the threat of divorce proceedings, or designed to induce a spouse to withdraw from existing proceedings, may be challenged later on grounds of duress. The closer the agreement is to the actual breakdown of the marriage, the harder it becomes to distinguish from a separation agreement, which carries different legal requirements.

7. Assets Excluded From Equalization Even Without a Prenuptial Agreement

The Property Relations Law already excludes certain categories of assets from the default equalization calculation. Understanding these exclusions matters for couples who decide not to sign a heskam mamon and for those who are drafting one, because a well-drafted agreement typically starts by mapping what is already excluded by statute, then addresses the gaps the default rules leave open.

Section 5 of the Property Relations Law identifies four categories of assets excluded from equalization:

• Property owned before marriage (Section 5(1)): Any asset a spouse owned on the date of marriage, including any future appreciation of that asset, stays outside the equalization calculation. A spouse who owned a Tel Aviv apartment worth NIS 2,000,000 at the time of marriage is entitled to exclude its full value, even if it is worth NIS 4,000,000 at the time of divorce.
• Gifts and inheritance received during marriage (Section 5(2)): Property received as a gift from a third party or through inheritance while the marriage is ongoing belongs entirely to the receiving spouse and is not equalized, regardless of when it was received.
• Personal injury compensation (Section 5(3)): Damages received for personal injury or suffering are excluded. Compensation for lost earnings that would have been subject to equalization is treated differently, and courts split this category.
• Property designated as separate by agreement (Section 5(4)): Assets that spouses explicitly agreed in writing would not be subject to equalization are excluded if the writing is clear and both parties understood the designation.

The practical risk with all four exclusions is commingling. An inherited NIS 500,000 deposited into a joint account and spent on family expenses loses its traceable separate character. An apartment owned before marriage that the couple renovated using shared earnings may have its appreciation partially reclassified as a joint resource. A prenuptial agreement that specifies exactly which assets are excluded and requires those assets to be kept in dedicated separate accounts removes the commingling problem before it starts.

8. Step-by-Step: Getting Your Heskam Mamon Approved in Israel

Getting a heskam mamon approved is a straightforward legal process when properly prepared. The typical timeline from start to court approval is two to six weeks.

Step 1 — Asset disclosure. Both parties prepare a complete schedule of current assets and liabilities: bank accounts, real estate in Israel and abroad, pension funds and provident funds, business interests, investments, vehicles, and loans. Full disclosure is not legally mandatory at the drafting stage, but agreements signed without disclosure are more vulnerable to challenge later. Courts in several rulings have treated non-disclosure of major assets as a basis for refusing to enforce specific provisions of a heskam mamon.

Step 2 — Engage separate attorneys. Each party should retain an independent Israeli family law attorney. Using one lawyer to draft the agreement for both parties creates a conflict of interest and weakens the agreement's credibility at the approval hearing. Attorney fees for drafting and filing a heskam mamon typically run NIS 3,000 to NIS 8,000 per attorney, depending on asset complexity.

Step 3 — Draft the agreement. The drafting attorney prepares the document in Hebrew, incorporating the provisions both parties agreed upon. The agreement identifies each included and excluded asset by name or description and specifies what happens to each category on divorce or death. English-language versions for international clients are common, but the Hebrew version controls in any Israeli court proceeding.

Step 4 — File with the Family Court or Rabbinical Court. The attorneys file the agreement together with a joint application for approval. The court filing fee at the Family Court is approximately NIS 368 under the Court Fees Regulations. The court schedules a hearing, typically within two to four weeks of filing.

Step 5 — Attend the approval hearing. Both spouses appear before the Family Court judge in person. The judge questions each party to confirm they read and understood the agreement and signed freely. The hearing typically lasts 15 to 30 minutes. If the judge is satisfied, an approval certificate is issued on the spot or within a few days.

Step 6 — Store the approved agreement. Keep certified copies of the approved heskam mamon in a secure location. Many attorneys recommend depositing a copy with the relevant court registry and retaining the original in a bank safe deposit box or with the attorney. In any future divorce or estate proceeding, the original with the court's approval stamp is the document that matters.