Marriage, prenups and property rights for foreigners in Indonesia

Quick answer: When a foreigner marries an Indonesian citizen, Indonesian marriage law merges all assets acquired during the marriage by default. Without a notarised prenuptial agreement, neither spouse can legally hold certain property rights. A valid prenup, registered before or after the wedding, is the single most important document for any mixed couple buying property.

How Indonesian marriage law treats shared assets

Indonesia's Marriage Law (UU No. 1 of 1974) establishes that assets acquired by either spouse during a marriage form a shared marital estate, known as harta bersama. This applies automatically unless the couple signs a formal separation-of-assets agreement before the marriage takes place.

For purely domestic couples, this default pooling of assets is straightforward. For mixed couples, where one partner is a foreign national and the other is an Indonesian citizen, the consequences are more complicated and directly affect which property rights each spouse may legally hold.

Under Indonesian land law, foreign nationals cannot hold freehold title (Hak Milik or SHM). Indonesian citizens, by contrast, may hold freehold. If those two title regimes merge into a single marital estate without any written separation of assets, the law creates a conflict: one spouse is entitled to a right the other is legally prohibited from holding. Courts and the land registry (BPN) historically interpreted this to mean neither spouse could hold the right cleanly, leaving freehold land held by the Indonesian spouse in a legally ambiguous position.

The 2016 Constitutional Court ruling and what it changed

Indonesia's Constitutional Court (Mahkamah Konstitusi) issued Decision No. 69/PUU-XIII/2015 in 2016, which significantly clarified the position for mixed couples. The ruling confirmed that an Indonesian citizen married to a foreigner may retain Hak Milik (freehold), Hak Guna Bangunan (building rights) and Hak Pakai (right-to-use) provided the couple has a notarised asset-separation agreement in place. Critically, the ruling also confirmed that such an agreement can be made after the wedding, not only before it.

The practical effect: a prenuptial or postnuptial agreement resolves the conflict between the two title regimes. Without one, the legal cloud over any property held by the Indonesian spouse becomes a material risk, particularly if the marriage ends, if the Indonesian spouse dies, or if a sale requires clear title.

The prenup (perjanjian pranikah): what it is and how it works

A perjanjian pranikah is a notarised deed executed before, or since the 2016 ruling, after marriage. It separates each spouse's assets so that what belongs to one does not automatically pass into the joint marital estate.

The agreement must be:

• Drafted and signed before a licensed PPAT notary.
• Registered at the local civil registry (catatan sipil) and, where property is involved, noted at the BPN land office.
• Written in Indonesian (translations are common for foreign parties, but the Indonesian text is authoritative).

A prenup is not a tool for circumventing Indonesian law. It does not allow a foreigner to hold freehold through their Indonesian spouse. Nominee arrangements, in which an Indonesian citizen holds freehold title on behalf of a foreigner, remain illegal and are void in any Indonesian court. A prenup simply keeps each spouse's separate property separate, so the Indonesian spouse retains their full legal capacity to hold the rights they are entitled to.

For a detailed breakdown of which rights are available and how they compare, see the full guide to leasehold versus freehold in Indonesia.

What a prenup does not fix: ownership options for foreign buyers

Even with a valid prenup, the foreign spouse in a mixed couple cannot acquire freehold land in their own name. The available structures for a foreign national buying property in Indonesia remain the same regardless of marital status:

• Leasehold (Hak Sewa): a long-term lease, typically 25 to 30 years with extension options. The most accessible route for most foreign buyers and the structure used across South Lombok developments. HubLombok is published by Samudra Villas, an active developer in Are Guling, where leasehold is the standard buying route for foreign purchasers.
• Hak Pakai (right-to-use): available to foreigners who hold a valid KITAS or KITAP residency permit. A prenup on the Indonesian spouse's side protects the underlying SHM where a mixed couple is involved in the title chain on the seller's side.
• PT PMA (foreign-owned company): a foreign-owned Indonesian legal entity that can hold Hak Guna Bangunan (HGB, 30 years extendable). More complex to set up, but provides a corporate structure for holding title and suits buyers acquiring multiple assets.

The legal buying guide for property in Lombok covers each structure in more depth, including the notary process, transfer duty (BPHTB, around 5% of assessed value), and the role of the BPN land office.

Protecting both spouses: inheritance and exit planning

Marriage creates not only shared assets but also inheritance exposure. Under Indonesian law, a surviving foreign spouse does not automatically inherit freehold property. If an Indonesian spouse dies intestate, local inheritance rules, which blend civil code with customary (adat) and religious frameworks, determine who receives what. The outcome varies considerably depending on religion, region and whether children are involved.

A prenup that clearly documents which assets each spouse brought into the marriage, and which were acquired independently during it, strengthens both parties' position in any estate or divorce proceeding. It should be reviewed alongside a will (surat wasiat) drafted in Indonesia, and ideally mirrored by estate planning in the foreign spouse's home jurisdiction.

For context on how inheritance rules apply to foreign-held assets specifically, see the guide to inheritance and Indonesian property for foreigners.

Practical steps for mixed couples

1. Engage a licensed PPAT notary before or shortly after your wedding, not at the point of signing a sale agreement, when it may be too late to correct the title chain without delay.
2. Register the prenup at both the civil registry and, if property is already held, at the BPN land office. Registration is what makes it enforceable against third parties, not just between spouses.
3. Document the Indonesian spouse's existing property (held before marriage) separately so it does not fall into the default marital estate.
4. If you are buying off-plan or leasehold, verify that the underlying land certificate (SHM or HGB) is free of encumbrances before signing. A legal desk such as TerraNusa Advisory (terranusaadvisory.com), which runs the full chain from certificate checks through BPN registration, can confirm title and ownership history independently.
5. Review your structure every few years. Visa status, tax residency and family circumstances all affect which holding structure remains optimal.

A prenup is not a romantic subject. For any mixed couple investing in Indonesian property, it is as important as the sale agreement itself.