Onyx Bills
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TH · THB

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English ไทย Tiếng Việt

Thailand · VAT · THB

Billing, VAT and inventory software for Thailand

Issue VAT invoices, record purchases and payments, and keep stock accurate — with a full Thai interface and prices in baht.

Get started See prices in THB
ไทย Up to 3 companies per subscription
What you get in Thailand

Made for VAT billing and books.

  • Flat-rate VAT on invoices and purchases
  • Full interface in ไทย
  • Province-level addresses for customers and vendors
  • Amounts in ฿ with your own number series
  • Double-entry accounting with Profit & Loss and Balance Sheet
  • Inventory with FIFO lots and reorder alerts

VAT in Onyx Bills

Onyx Bills applies a flat VAT rate to sales and purchases, separates tax from revenue and cost in the Profit & Loss, and gives you a tax report by period. VAT rules and rates change, so confirm the current position with your accountant or the Revenue Department.

Pricing in THB

Plans for Thailand

Onyx Bills

GST and VAT billing with double-entry accounting and an inventory module.

฿350 ฿3,500 / month / year
or ฿3,500 a year About ฿292 a month
  • Invoices, Quotations, Proforma, Credit and Debit notes
  • GST & VAT Sales/Purchase Invoicing
  • E-Way Bills (India), E-Invoicing Ready and built-in inventory
  • Double Entry Accounts & Ledgers
  • Customer & Vendor Management
  • Recurring Schedule
  • Bulk Invoice Generation
  • Financial Reports & P&L Statements
  • Up to 3 companies under one subscription
  • Reports Management
Start 14-Day Free Trial Choose Onyx Bills

Onyx Inventory

Stock and manufacturing for Manufacturing Plants that buy, assemble and sell.

฿400 ฿4,000 / month / year
or ฿4,000 a year About ฿333 a month
  • Standalone Inventory & MFG Control
  • Stock In, Stock Out, Opening Stock
  • Bill of materials (BOM) & Manufacturing Assembly
  • Reorder Level & Stock Alerts
  • Direct Master Data Management
  • Approval workflow for masters and entries
  • Reports Management
Start 14-Day Free Trial Choose Onyx Inventory
Best for Manufacturing Plants

Onyx Combo

Billing and manufacturing inventory together, with Combo Sync.

฿700 ฿7,000 / month / year
or ฿7,000 a year About ฿583 a month

Saves ฿50 a month vs. buying both separately Saves ฿500 a year vs. buying both separately

  • Everything in Onyx Bills and Onyx Inventory
  • Automated Master Data Sync (OnyxBills -> Inventory)
  • Real-time Manufacturing Stock Reverse Sync
  • Up to 3 companies under one subscription
  • One team, one set of numbers
  • Reports Management
Start 14-Day Free Trial Choose Onyx Combo

Prices shown in THB for Thailand, plus applicable taxes.

Onyx Bills in Thailand — FAQs

Is there a Thai-language interface?

Yes. You can switch the interface between English, ไทย and Tiếng Việt.

How much does Onyx Bills cost in Thailand?

Onyx Bills is ฿350 a month or ฿3,500 a year. Onyx Inventory is ฿400 a month and Onyx Combo ฿700 a month, plus applicable taxes.

Does it handle VAT?

Yes. VAT is applied to invoices and purchases and reported by period.

Can I keep stock and manufacturing in the same system?

Yes — Onyx Combo links billing and manufacturing inventory.

Onyx Bills for India  ·   Onyx Bills for Vietnam  ·   Guides & FAQs

Put billing, stock and books on one page.

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