Result card
Everything that matters, on one card.
Type, plain-English summary, key dates, amounts owed, who sent it and your next action. No jargon, no wall of text. Browse the Thai documents glossary
เข้าใจkâo jai“I understand”
Thai paperwork, understood.
Snap any Thai document. A lease, a condo notice, an electricity bill, a school letter or a government form like TM30. Kao Jai translates it and explains it in plain English: what it is, what you owe, by when, and what to do next.
- Leases, bills, notices, forms
- Answers in seconds
- Replies in polite Thai
- สัญญาเช่าLease
- ใบแจ้งค่าไฟฟ้าElectricity bill
- ประกาศนิติบุคคลCondo notice
- หนังสือจากโรงเรียนSchool letter
- ใบแจ้งค่าน้ำประปาWater bill
- แบบ ตม.30TM30 form
- ใบสั่งจราจรTraffic fine
- ภาษีที่ดินLand tax
- สัญญาซื้อขายSale contract
01 · How it works
Understand any Thai document in three steps.
No more photographing letters for a Thai friend, or guessing with a translation app that gives you words but not meaning.
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Step 1
Snap it
Take a photo, pick one from your camera roll, or upload a PDF. Crumpled, angled or half in shadow is fine.
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Step 2
Understand it
Get a clear result card: what the document is, who it’s from, the key dates, any money owed, and the catch, if there is one.
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Step 3
Sort it
Ask follow-up questions, draft a polite reply in Thai, and keep every document in one searchable history.
02 · Features
More than Thai-to-English translation. A personal admin assistant that knows how Thailand works.
Translation tells you what the words say. Kao Jai tells you what they mean for you, and what to do about it.
Red flags
Spot the catch before you sign.
Leases and contracts get a clause-by-clause check. Unusual, one-sided or costly terms are flagged in plain English, so you know what to ask about. The 10 lease red flags we check
Ask about this document
Ask anything, in your own words.
A chat that knows the document you just scanned, and how things work in Thailand.
Draft my reply
Reply in polite Thai, with the English alongside.
The right tone for a landlord, a juristic office or a school. Copy it to LINE or email in one tap.
History
Every document, in one place.
Find last year’s lease or March’s water bill in seconds.
Any format
Camera, photo or PDF.
Multi-page leases and blurry phone shots welcome. Handwriting gets its best effort, and an honest “not sure”.
03 · Who it’s for
Made for expats and long‑stay life in Thailand.
You love living here. You don’t love the envelope on the door you can’t read.
Retirees
Condo notices, bank letters and 90-day reports, without leaning on the neighbours.
Remote workers & DTV holders
Short leases, utility bills and immigration paperwork, sorted between calls.
Families
School letters, permission slips and fees, so nothing slips through the cracks.
Property owners
Land tax, juristic office notices and tenant contracts, checked before they cost you.
For expats all over Thailand, including
- Pattayaพัทยา
- Jomtienจอมเทียน
- Hua Hinหัวหิน
- Phuketภูเก็ต
- Bangkokกรุงเทพฯ
- Chiang Maiเชียงใหม่
04 · Pricing
Less than a coffee a week.
Start free. Upgrade when Thai paperwork stops being occasional.
Free
For the odd letter on the door.
฿0forever
- 3 documents a month
- Full result card for each
- Red flags on leases and contracts
- Ask about this document
- Draft replies in polite Thai
Most popular
Pro
For everyday life admin in Thailand.
฿199 per month
or ฿1,990 a year, 2 months free
- Unlimited documents (fair use)
- Everything in Free
- Full document history and search
- Priority decoding for long leases
- First access to reminders and forms
Prices in Thai baht, including VAT. Cancel any time.
05 · Coming soon
Next: reminders for your visa, 90-day report and TM30.
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Next up
Deadline vault & reminders
Visa extensions, 90-day reports and TM30, tracked from your documents with a nudge before each one is due.
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Later
Auto-filled forms
Common government forms, pre-filled from the details Kao Jai already knows, ready to print or submit.
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Later
Bill tracker
Electricity, water, internet and condo fees, all in one view, with what’s paid and what’s due. Until then: your Thai electricity bill, explained.
06 · Resources
Free guides to Thai paperwork.
Plain-English, sourced explainers for the documents expats ask about most. Browse all resources
Translate Thai documents to English
Photo of a Thai letter, bill or lease? Compare Google Translate, AI chat, a Thai friend and certified translation, and learn when a word-for-word translation isn't enough.
Read the guide →TM30 explained
What TM30 means, who has to file it (usually your landlord, not you), the 24-hour rule, how to file online, the fine of up to ฿2,000, and why immigration asks for the receipt.
Read the guide →90-day report (TM47)
Who must file the 90-day report, the 15-days-before to 7-days-after window, how to report online, by post or in person, the ฿2,000 late fine, and what changes if you travel.
Read the guide →Thai lease red flags
Renting in Thailand? The deposit, utility, rent-increase and early-exit clauses to check in a Thai or bilingual lease, what Thai consumer rules allow, and how to negotiate.
Read the guide →Thai electricity bill explained
What every line on a Thai PEA or MEA electricity bill means, the current per-unit rates and Ft charge, a worked example, and how to pay it at 7-Eleven or in your bank app.
Read the guide →Thai documents glossary
Plain-English meanings of the Thai words on leases, bills and government letters: TM30, TM47, TM7, Tabien Baan (yellow book), pink ID card, chanote, juristic person, PND 90/91 and more.
Read the guide →
07 · FAQ
Good questions.
Something else on your mind? We’re building this in Pattaya and reading every reply from the waitlist.
Is Kao Jai just a translator?
No. A translator turns Thai words into English words. Kao Jai reads the whole document and tells you what it is, what it means for you, what you owe, by when, and what to do next. It also knows how common Thai processes work, like paying a bill at 7-Eleven or what a juristic office notice usually asks for.
Is this legal advice?
No. Kao Jai explains documents in plain English to help you understand them. It isn’t a law firm, and nothing it says is legal, tax or immigration advice. For anything with serious consequences, such as signing a lease, buying property or a dispute, please check with a qualified Thai lawyer or the relevant office.
What happens to my documents? Is my data private?
Your documents are yours. They’re encrypted in transit and at rest, used only to decode them for you, never sold, and never used for advertising. You can delete any document, or your whole account, at any time. We handle personal data in line with Thailand’s Personal Data Protection Act (PDPA). Read the privacy notice.
How accurate is it?
Very good on printed documents like bills, notices and contracts, and improving every week. When something is unclear, like faint handwriting or a cut-off page, Kao Jai says so rather than guessing, and it always shows the original Thai next to the explanation so you can double-check.
Can Kao Jai translate a photo of a Thai letter?
Yes. Take a photo, choose one from your camera roll or upload a PDF, and Kao Jai translates the Thai into English. Then it goes further than a translation app: it tells you what the letter is, who sent it, what you owe, by when, and what to do next. Read how to translate a Thai document to English.
What kinds of documents does it handle?
Leases and rental contracts, electricity and water bills, condo and juristic office notices, school letters, bank letters, traffic fines, land and property tax notices, and immigration paperwork like TM30 and 90-day report receipts. If it’s Thai and on paper or PDF, try it.
When can I use it, and how much does it cost?
We’re launching across Thailand as soon as it’s ready. Join the waitlist and your first document is free. After that, Free gives you 3 documents a month, and Pro is ฿199 a month or ฿1,990 a year.
Do I need to download an app?
Yes. Kao Jai will be an iPhone and Android app, launching soon on the App Store and Google Play. Join the waitlist and we’ll email you when it’s ready to download.
Upload your first document free.
Join the waitlist and be first in when we launch.