When both words are prepositions meaning “for,” the main contrast is register: untuk is neutral and works across speech and writing, while buat is conversational (informal). But buat can also be the lexical verb root “make/do.” In Aku buat kopi buat Ibu, the first buat is a verb and the second is a preposition.
English hides this category contrast because it uses different words, make and for. Indonesian uses position, complements, affixation, and register to tell the two lives of buat apart.
The quick decision
| Question | Choose | Example |
|---|---|---|
| Is this an official, academic, or carefully edited purpose/beneficiary? | untuk | dana untuk pelatihan |
| Is this a relaxed spoken purpose/beneficiary? | untuk or prepositional buat | ini buat kamu |
| Does the word itself mean “make/do”? | lexical buat, often membuat | membuat rencana |
untuk: neutral beneficiary and purpose
Untuk points toward an intended beneficiary, result, purpose, or use. It is natural in ordinary conversation and is the safe choice in formal writing.
Kursi di baris depan ini untuk tamu undangan.
The seats in the front row are for invited guests. (neutral beneficiary)
Saya membeli obat ini untuk Ayah.
I bought this medicine for Dad. (neutral beneficiary)
Kami datang lebih awal untuk menyiapkan ruang pertemuan.
We came early to prepare the meeting room. (neutral purpose)
Tombol merah digunakan untuk menghentikan mesin dalam keadaan darurat.
The red button is used to stop the machine in an emergency. (formal intended use)
Anggaran tersebut dialokasikan untuk meningkatkan akses air bersih.
The budget was allocated to improve access to clean water. (formal purpose)
Untuk itself does not guarantee that the benefit or purpose was achieved. A gift untuk Rina can still remain undelivered; studying untuk lulus does not guarantee passing.
The untuk reference also distinguishes purpose from duration, price, and exchange.
Prepositional buat: the same relation in conversation
Before a beneficiary, use, or action, buat can mean “for” (informal).
Aku simpan satu potong kue buat kamu.
I saved one piece of cake for you. (informal beneficiary)
Uang ini buat bayar iuran bulan depan.
This money is for paying next month's dues. (informal purpose)
Kamar kecil itu sekarang dipakai buat menyimpan alat musik.
That small room is now used for storing musical instruments. (informal intended use)
Kami mampir sebentar buat ambil dokumen yang ketinggalan.
We stopped briefly to get the document that was left behind. (informal purpose)
The conversational cluster often includes bare verbs such as bayar, ambil, bantu, familiar pronouns, and shorter clauses. A formal rewrite changes the whole cluster:
Dana ini digunakan untuk membayar iuran bulan berikutnya.
These funds are used to pay the following month's dues. (formal rewrite)
Kami kembali ke kantor untuk mengambil dokumen yang tertinggal.
We returned to the office to collect the document that had been left behind. (formal/neutral rewrite)
Do not treat casual buat bayar as failed untuk membayar. It is systematic spoken Indonesian. Conversely, do not insert it unquoted into an official budget report.
Paired spoken and written sentences
The proposition can remain stable while audience selects the preposition.
Beneficiary
Percakapan: Aku bawakan kursi tambahan ini buat Nenek.
Conversation: I brought this extra chair for Grandma. (informal)
Tulisan: Saya membawa kursi tambahan ini untuk Nenek.
Writing: I brought this additional chair for Grandma. (neutral/formal)
Purpose
Percakapan: Kita kumpul jam tujuh buat bahas rencana besok.
Conversation: We're meeting at seven to discuss tomorrow's plan. (informal)
Tulisan: Tim akan berkumpul pukul tujuh untuk membahas rencana kegiatan esok hari.
Writing: The team will meet at seven to discuss the next day's activity plan. (formal)
Intended use
Percakapan: Meja ini buat taruh makanan, bukan buat duduk.
Conversation: This table is for putting food on, not for sitting. (informal)
Tulisan: Meja ini digunakan untuk meletakkan makanan dan tidak boleh diduduki.
Writing: This table is used for placing food and must not be sat on. (formal)
Untuk is not forbidden in speech:
Aku membeli tiket ini untuk kamu, bukan untuk adikmu.
I bought this ticket for you, not for your younger sibling. (natural conversation; neutral untuk)
It may sound slightly more neutral or contrastively careful than buat, but it is entirely ordinary.
Lexical buat: make or do
As a verb root, buat means “make/do.” It appears bare in imperatives, object voice, and casual active clauses. Standard active agent voice uses membuat, with the correct morphophonemic form mem- + buat → membuat.
Buat dua salinan sebelum loketnya tutup.
Make two copies before the counter closes. (imperative root)
Daftar ini saya buat tadi malam.
I made this list last night. (standard object voice)
Aku buat teh jahe dulu, ya.
I'll make ginger tea first, okay? (informal active bare root)
Panitia membuat daftar peserta berdasarkan formulir yang masuk.
The committee created the participant list from the submitted forms. (formal active agent voice)
Derived forms confirm the verbal category: dibuat “made,” buatan “made/product,” and pembuatan “making/production.”
Papan informasi itu dibuat oleh pengrajin setempat.
The information board was made by a local craftsperson.
Pembuatan kartu baru memerlukan waktu tiga hari kerja.
Producing a new card takes three working days. (formal nominalization)
One sentence, two buat categories
Aku buat kopi susu buat Ibu sebelum berangkat.
I make milk coffee for Mom before leaving. (informal; verb buat + preposition buat)
The structure is:
- Aku — actor
- first buat — verb “make”
- kopi susu — thing made
- second buat — preposition “for”
- Ibu — intended beneficiary
A monitored rewrite uses both standard active morphology and neutral untuk:
Saya membuat kopi susu untuk Ibu sebelum berangkat.
I make milk coffee for Mom before leaving. (neutral/formal)
This is the distinguishing insight of the page: sometimes untuk–buat is a register choice, and sometimes there is no choice because buat is the main verb.
Ambiguous-looking sentences
Context and complement structure resolve apparent ambiguity.
Buat apa?
A: Kamu kembali ke kantor buat apa? B: Buat mengambil kartu akses.
A: What are you going back to the office for? B: To collect the access card. (informal purpose)
A: Kamu mau buat apa dengan kain ini? B: Aku mau buat tas kecil.
A: What do you want to make with this cloth? B: I want to make a small bag. (lexical verb)
In the first exchange, buat apa asks “for what purpose?” In the second, buat apa asks “make what?” The surrounding verb and object possibilities decide.
Buat Rina
Hadiah kecil itu buat Rina.
That small gift is for Rina. (informal preposition; beneficiary)
Buat Rina tersenyum lagi.
Make Rina smile again. (imperative lexical verb; Rina as object)
Word order distinguishes a predicate-initial imperative from a nominal clause identifying an intended beneficiary.
Audience calibration
Prepositional buat is common in conversation, personal messages, dialogue, and many informal online contexts. Untuk is expected in official letters, contracts, reports, academic prose, public safety instructions, and carefully edited explanations.
Besok aku datang lebih pagi buat bantu kamu beres-beres.
Tomorrow I'll come earlier to help you tidy up. (informal; genuine reduplication beres-beres is hyphenated)
Relawan diminta hadir lebih awal untuk membantu menata ruangan.
Volunteers are asked to arrive earlier to help arrange the room. (formal instruction)
Avoiding buat in every conversation can sound overly monitored, especially in fixed questions like buat apa?. Using it is not required, however; untuk apa? remains neutral and natural.
Untuk apa data tambahan ini diperlukan?
What is this additional data needed for? (neutral/formal question)
Spelling
Write prepositional buat and untuk separately before full complements: buat kamu, untuk Ibu. Bound pronouns attach: buatku, untukmu, untuknya. Attach verbal morphology in membuat, dibuat, pembuatan.
Pesanmu sangat berarti buatku.
Your message means a lot to me. (informal; both -mu and -ku attach)
Common Mistakes
1. Using prepositional buat in official prose
❌ Dana tersebut dialokasikan buat memperluas fasilitas kesehatan.
Incorrect document wording—use untuk to state the allocated purpose.
✅ Dana tersebut dialokasikan untuk memperluas fasilitas kesehatan daerah.
The funds are allocated to expand regional health facilities.
2. Avoiding buat in all conversation
❌ Kata “buat” tidak pernah berfungsi sebagai preposisi dalam percakapan yang baik.
Incorrect claim—prepositional buat is systematic in conversational Indonesian.
✅ Aku beli roti ini buat kita makan di perjalanan.
I bought this bread for us to eat on the journey. (informal)
3. Treating lexical buat as the preposition untuk
❌ Saya untuk laporan baru sebelum rapat.
Incorrect category—this clause needs the verb membuat, not a purpose preposition.
✅ Saya membuat laporan baru sebelum rapat dimulai.
I made a new report before the meeting began.
4. Building membuat with the wrong nasal prefix
❌ Tim itu menbuat rancangan aplikasi baru.
Incorrect morphophonemic form—meN- plus buat produces membuat.
✅ Tim itu membuat rancangan aplikasi baru untuk perpustakaan.
The team created a new application design for the library.
5. Joining the preposition to an independent pronoun
❌ Kursi dekat jendela ini buatkamu.
Incorrect boundary—kamu is an independent pronoun and remains separate.
✅ Kursi dekat jendela ini buat kamu.
This seat near the window is for you. (informal)
Key Takeaways
- Prepositional untuk and buat share beneficiary and purpose meanings; register distinguishes them.
- Untuk is neutral across speech and writing; prepositional buat is conversational.
- Lexical buat means “make/do” and forms standard membuat.
- Category and word order disambiguate buat apa and sentences containing two instances of buat.
- Match the entire clause to the audience, including verb affixation and pronoun choice.
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Start learning Indonesian →Related Topics
- untuk: Beneficiary and PurposeA1 — Use untuk to mark intended beneficiaries, purposes, uses, and prospective goals.
- buat: Colloquial For and Lexical MakeA2 — Distinguish conversational prepositional buat meaning for from the verb root buat and its standard derived form membuat.
- buat, membuat, and bikin: Verb Family and UsageB1 — Distinguish creation, causation, passive results, process nouns, and the conversational stance carried by buat and bikin.
- Collocations with buat, membuat, and bikinB1 — Choose natural creation, causation, material, and beneficiary expressions with neutral membuat, conversational buat, and informal bikin.
- Everyday Colloquial IndonesianB1 — Understand systematic everyday Indonesian through relationship-based pronouns, common reductions, bare roots, particles, omission, and local coloration.
- Standard Formal Written IndonesianB1 — Write clear standard Indonesian with EYD V spelling, explicit relations, purposeful nominalization, stable reference, and controlled sentence length.