eTax Gateway v1.0

Thailand e-Tax Document Gateway

Receive tax documents from external systems, generate certified PDFs, and submit to INET e-Tax service — all through a single, secure API.

Admin ConsoleAPI DocsSystem Status

Core Capabilities

Everything you need for e-Tax compliance

Full lifecycle management — from document ingestion to INET submission and callback delivery.

Tax Documents

Create, validate, and manage tax invoices, receipts, credit notes, and debit notes with automatic PDF generation.

Receipt Management

Issue short receipts with QR codes and convert them to full tax invoices when customer details are provided.

Payment Gateway

Track payments with multi-provider support. Automatic receipt generation on payment confirmation via webhooks.

Webhooks & Callbacks

Receive real-time payment notifications and deliver document status callbacks with automatic retry logic.

REST API

API Endpoints

RESTful JSON API with API key authentication and Zod-validated requests.

POST/api/v1/documents
GET/api/v1/documents/:id
POST/api/v1/receipts
GET/api/v1/receipts/:id
POST/api/v1/payments
GET/api/v1/payments/:id
POST/api/v1/webhooks/kbank
GET/api/health · /health

Built With

Production-Ready Stack

Next.js 16
TypeScript
PostgreSQL
Prisma ORM
Puppeteer PDF
Zod Validation