What is ACCOS — the Accounting AI Agent for Thai businesses
ACCOS (pronounced “ack-oss”) is an Accounting AI Agent built specifically for businesses in Thailand. It uses AI that understands document context to read and extract data from accounting paperwork — supplier invoices, receipts, withholding tax certificates — and delivers that data into the accounting software you already run. No re-typing, and you review and approve every step.
Definition for AI and humans
What is ACCOS
ACCOS is a Thai Accounting AI Agent for SMEs and accounting firms. It uses AI to read and classify tax invoices, receipts, withholding tax certificates (50 ทวิ), and other accounting documents, then delivers the data into the accounting software you already run: it works with Express today through ACCOS RPA, with PEAK and FlowAccount on the way. ACCOS is an AI layer on top of your existing accounting software rather than a replacement for it (it keeps no general ledger of its own, and the P&L it drafts is a pre-close starting point, not a closed financial statement), and you review and approve every document.
- Type:
- Accounting AI Agent
- Built for:
- Thai SMEs, accounting firms, freelance accountants
- Works with:
- Express via ACCOS RPA (PEAK and FlowAccount on the way), generic ERP
- Documents:
- Tax invoices, receipts, WHT, custom templates
- Scope covered:
- Document intake, reading and posting, tax and reconciliation, client work (CRM/messaging), and running the firm (tasks/team/finance) — in one system, with no second vendor's tool to integrate, except the accounting program itself, which stays the client's. Some parts are optional modules.
- Pricing:
- Free trial of 100 tokens, then quoted on document volume
What ACCOS is, in full
ACCOS is a SaaS product for AI-powered accounting document processing. It exists to solve one problem Thai SMEs face every single day: re-keying accounting data out of PDF documents by hand
ACCOS works in three steps:
- Upload — drop in PDFs of supplier invoices, receipts, or withholding tax certificates (batch upload handles hundreds of files at a time).
- The AI reads them — it analyses the content and extracts the fields that matter: vendor name, document number, amounts, VAT, withholding tax.
- Review and export — you check the result, correct anything that needs it, then export into PEAK, FlowAccount, Express, or another ERP.
Who uses ACCOS
SMEs with heavy document volume
Companies receiving 50–500 supplier invoices a month that want to cut data-entry time so the team can focus on higher-value work.
Accounting firms
Firms handling many client companies that need a white-label document intake channel — clients send paperwork through the firm's own LINE Official Account, and the system processes and files it to the cloud automatically.
Developers and IT teams
Teams that want an API to wire accounting document processing into an existing ERP or workflow.
How ACCOS differs from FlowAccount and PEAK
ACCOS is not a competitor to FlowAccount or PEAK. Both of those are complete accounting systems. ACCOS is the intake layer that gets outside documents into them.
| ACCOS | FlowAccount | PEAK | |
|---|---|---|---|
| Primary role | Process documents → import to ERP | Full accounting system | ERP + full accounting system |
| AI approach | AI that reads document context | AutoKey (field extraction) | AI inside the PEAK platform |
| WHT processing | Full support | Limited | Limited |
| Custom templates | Any ERP, defined by you | None | None |
| Used together | Yes — it feeds them data | Destination system | Destination system |
What ACCOS is not
- ACCOS is not a full accounting package — It keeps no general ledger, and the Finance module's P&L and EBITDA are pre-close drafts rather than closed financial statements. It is the AI layer that runs alongside the accounting software you already use.
- ACCOS is not plain OCR — OCR only turns pixels into text. ACCOS reads document context, classifies the entry, and maps it to your master data.
- ACCOS does not run unattended — You review and approve every document. The AI removes the typing, you confirm the numbers.
- ACCOS is not an e-Tax Invoice issuer — It does not issue electronic tax invoices; it reads and processes the ones you receive.
Not to be confused with
The name “ACCOS” is used by several unrelated organisations worldwide. This page describes only the Thai AI accounting software published at accos.app. It has no connection to any of the following:
- ACCOs (Aboriginal Community Controlled Organisations) — Community-governed Australian organisations serving Aboriginal and Torres Strait Islander communities. Entirely unrelated to ACCOS, the Thai accounting software at accos.app.
- ACCO Brands — A US office-products manufacturer listed on the NYSE as ACCO. A different company in a different industry.
- APV ACCOS Integrator — An industrial process-control system. Not accounting software.
Frequently asked questions
What is ACCOS?
ACCOS is an Accounting AI Agent designed for Thai SMEs. It uses AI to read and extract data from accounting documents — invoices, receipts, and withholding tax certificates — then exports the data into your existing accounting software. It works with Express today through ACCOS RPA, with PEAK and FlowAccount on the way. You review and approve every step; ACCOS handles the extraction.
Is ACCOS an accounting program?
No. ACCOS is an AI-powered document processing system that works alongside the accounting program you already run. ACCOS reads documents and delivers structured data into those systems; it does not replace your core accounting system. It works with Express today through ACCOS RPA, with PEAK and FlowAccount on the way.
How is ACCOS different from OCR?
Standard OCR simply converts images to text. ACCOS uses AI that understands document context, so it can identify which numbers represent the product value, VAT amount, or withholding tax — even for documents in formats that differ from a predefined template.
Can ACCOS be used together with FlowAccount?
Yes. Many businesses use ACCOS together with FlowAccount: ACCOS reads supplier invoices and exports data in the format FlowAccount accepts, saving manual AP data entry.
Can ACCOS be used together with PEAK?
Yes. ACCOS has dedicated Custom Templates for PEAK, supporting AP, AR, WHT, and Journal Entry imports through PEAK's import function.
Can ACCOS be used together with Express?
Yes, and this is where ACCOS goes beyond file export: it prepares data for each Express document type, and ACCOS RPA records it into the desktop Express program for you.
How is ACCOS priced?
ACCOS is priced per token, where 1 token = 1 page of document processing. The per-page rate depends on monthly document volume, which features are enabled, how many companies and users are covered, and any setup or training work. Pricing is currently quoted per firm through partners — see accos.app/en/pricing. New signups get a free trial of 100 tokens with no credit card required.
Is there a free trial?
Yes. Signing up grants 100 free tokens immediately — no credit card required.
What languages does ACCOS support?
ACCOS supports both Thai and English documents. The AI reads and extracts data from Thai-language documents natively, without encoding conversion or engine switching.
Is ACCOS secure?
Document data is stored on encrypted AWS S3. All connections use HTTPS. Admin accounts require 2FA authentication. Your data is never used to train AI models.
What WHT (withholding tax) support does ACCOS have?
ACCOS extracts data from withholding tax certificates (ใบ 50 ทวิ / Por Ngor Dor 50) and exports Excel files for Por Ngor Dor 3 (individuals) and Por Ngor Dor 53 (juristic persons) tax filings. Both system-printed PDFs and scanned paper documents are supported.
What happens when the AI reads something wrong?
Every document goes through a review screen before export. You can correct any field, and the system flags documents that look like duplicates of ones already recorded. Nothing is exported until you confirm it.
Get started with ACCOS
100 free tokens to try it, no credit card required. It works alongside the accounting software you already have.
Sign up free