Business Contracts Indonesia 2026 | Legal Guide

Q: Do contracts in Indonesia need to be in Indonesian language?

Yes. UU 24/2009 requires contracts involving Indonesian parties to be in Bahasa Indonesia. Best practice is bilingual (Indonesian/English) with a clause stating the Indonesian version prevails in case of conflict.

Q: Are verbal contracts enforceable in Indonesia?

Technically yes under Civil Code, but practically unenforceable without evidence. Always use written contracts with proper signatures and witnesses. Notarization adds legal weight for high-value agreements.

Q: What dispute resolution clause should I include?

Include a tiered clause: negotiation first, then mediation, then arbitration (BANI for domestic, SIAC for international). Avoid Indonesian courts if possible — arbitration is faster, more predictable, and enforceable under the New York Convention.

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Business Contracts Under Indonesian Law 2026

Contracts are essential for business, but they must comply with Indonesian law to be enforceable. Here's what you need to know.

Contract Requirements

Valid Contract Elements

Under Indonesian Civil Code (Article 1320), a valid contract requires:

Consent - Mutual agreement, freely given
Capacity - Parties legally able to contract
Specific matter - Clear subject matter
Lawful cause - Legal purpose

Missing any element can make contract void or voidable.

Contract Types

Common Business Contracts

Types you'll encounter

Feature	Sales Agreement Buying/selling goods	Service Agreement Providing services	Employment Contract Hiring employees	Lease Agreement Property rental	Shareholder Agreement Company ownership
Form	Written recommended	Written recommended	Written required	Written required	Notarized deed
Language	Any (Indonesian preferred)	Any	Indonesian required	Indonesian preferred	Indonesian required
Stamp Duty	Yes	Yes	Yes	Yes	Yes
Notarization	Optional	Optional	No	For long-term	Required

Language Requirements

Indonesian Language Law

Under Law 24/2009, contracts involving Indonesian parties should be in Indonesian.

Practical approach:

Bilingual contracts (Indonesian + English)
Indonesian version prevails if conflict
Include clause stating which version governs

Ignoring this can create enforcement issues.

Best Practice

Situation	Recommendation
Both parties Indonesian	Indonesian only
One party foreign	Bilingual
Both parties foreign	English OK (but Indonesian helps)
Employment contract	Must include Indonesian

Essential Contract Elements

Contract Checklist

0 of 10 completed0/8 required

Stamp Duty (Materai)

Stamp Duty Required

Materai (stamp duty) is required on:

Contracts
Legal documents
Documents used as evidence in court

Current rate: IDR 10,000 per document

Without proper stamp duty, document may not be admissible as evidence.

How to Apply Stamp Duty

Method	Notes
Physical stamp	Affixed and signed across
E-Meterai	Electronic stamp duty
Post-stamping	Can be done later if needed

Dispute Resolution

Options

Method	Pros	Cons
Negotiation	Fast, cheap	No enforcement
Mediation	Neutral third party	Still non-binding
Arbitration (BANI)	Binding, expert arbitrators	Costly
Court litigation	State enforcement	Slow, public

Arbitration Clause

Choose Arbitration

For significant commercial contracts:

Include arbitration clause
BANI (Indonesian) or SIAC (Singapore)
Faster than courts
Enforceable internationally

Example clause should specify:

Institution (BANI, SIAC)
Location
Number of arbitrators
Language

Governing Law

For Foreign Investment

Situation	Governing Law
PT PMA contracts	Indonesian law typically
Cross-border deals	Can choose neutral law
Employment	Must be Indonesian law
Property	Must be Indonesian law

Notarization Requirements

When Notary Required

Document	Notarization
Company deed	Required
Share transfers	Required
Property transfer	Required
Power of attorney	Recommended
Standard commercial	Not required

Indonesian notaries (PPAT/Notaris) have specific authority for certain documents.

Common Contract Mistakes

Mistake	Risk
No Indonesian version	Enforcement issues
Missing stamp duty	Evidence problems
Vague terms	Interpretation disputes
Wrong capacity	Void contract
No dispute clause	Uncertain resolution
Overlooking regulations	Compliance issues

Electronic Contracts

E-Contracts Valid

Under Law 11/2008 (ITE Law):

Electronic contracts are valid
Electronic signatures recognized
Must meet certain requirements
Some exceptions (land, inheritance)

Digital signing platforms can be used for most commercial contracts.

Force Majeure

Indonesian law recognizes force majeure (keadaan kahar):

Events beyond control
Make performance impossible
Must be specifically defined in contract

Include clear force majeure clauses defining:

What events qualify
Notice requirements
Effect on obligations
Duration limits

Common Questions

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Business Contracts Under Indonesian Law 2026

Questions about how this applies to your case?

Business Contracts Under Indonesian Law 2026

Contract Requirements

Contract Types

Common Business Contracts

Language Requirements

Best Practice

Essential Contract Elements

Contract Checklist

Stamp Duty (Materai)

How to Apply Stamp Duty

Dispute Resolution

Options

Arbitration Clause

Governing Law

For Foreign Investment

Notarization Requirements

When Notary Required

Common Contract Mistakes

Electronic Contracts

Force Majeure

Common Questions

Ask Zantara

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