Onyx Bills
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Billing · Inventory · Accounting

Bill it. Stock it. Balance it.

GST invoicing, batch-tracked inventory and double-entry accounting in one connected system — with manufacturing and stock sync when your Manufacturing Plant needs them.

Get started See pricing from ₹600/month
  • GST ready
  • Up to 3 companies per subscription
  • English · ไทย · Tiếng Việt

Made for

  • Retailers & distributors
  • Service businesses
  • Manufacturing Plants
  • Accounts & finance teams
  • Owners of multiple companies
Products & Pricing

Pick the part you need. Or run the whole thing.

Start with billing, start with stock, or take both in one pack and let them work from the same entries.

Onyx Bills

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

₹600 ₹6,000 / month / year
or ₹6,000 a year About ₹500 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.

₹700 ₹7,000 / month / year
or ₹7,000 a year About ₹583 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.

₹1,000 ₹10,000 / month / year
or ₹10,000 a year About ₹833 a month

Saves ₹300 a month vs. buying both separately Saves ₹3,000 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 INR for India, plus applicable taxes.

Features

Every step from first quote to final balance sheet.

Billing, purchases, stock, books and control — everything below is part of Onyx Bills.

Sell

Quote, invoice and collect — with the right tax chosen for you.

Sales invoices

Line discounts, tax-inclusive pricing, other charges, transport details and round-off, with status tracking from Draft to Paid.

Automatic tax type

CGST + SGST or IGST is picked from your state and the shipping state — no manual switching.

Quotations to invoices

Send a quote with a validity date, track acceptance, then convert it to an invoice in one step.

Proforma invoices

Bill before goods ship, then convert once payment is confirmed.

Credit notes

Issue against a posted invoice to reduce the balance and return tracked stock.

Bulk invoice batches

Bill one product or service to many contacts at once, each with its own voucher number.

e-Way Bills

Generate e-Way Bills as part of the billing flow for movement of goods.

Buy & pay

Record what you buy, what you owe and what you have paid.

Purchase invoices

Every received line creates a new FIFO stock lot, so costs follow the stock.

Debit notes

Return goods to a vendor, reduce what you owe and deduct stock in one entry.

Payments received and made

Cash, bank, cheque, UPI, card or online transfer — applied against outstanding bills.

Expenses

Office costs, utilities and other outgoings that are not tied to a purchase.

Contra entries

Move money between cash and bank accounts and between banks.

Customers and vendors

One contact list with groups, opening balances, credit limits and a running ledger.

Stock

Know what you have, what it cost and when it expires.

Products and services

Nested categories, product types, units of measure and unit-conversion rules such as 1 Box = 10 Pcs.

Lot and batch tracking

FIFO lots draw down the oldest stock first, with a source trail for every lot.

Barcodes

Generate unique barcodes in Code128, QR or EAN-13 and print them on sticker templates.

Near-expiry reports

See expired stock and what expires in 30, 60 or 90 days, so you sell the oldest first.

Valuation and reorder alerts

Stock value at cost and retail, plus low-stock and out-of-stock alerts against your reorder levels.

Bulk CSV import

Bring in customers, vendors and products from a spreadsheet, with an import history.

Books & reports

Double-entry accounting that stays in step with every invoice and payment.

Chart of accounts

Seventeen ready-made account groups across assets, liabilities, income, expenses and equity.

Journal entries

Manual vouchers that only post when debit equals credit.

Profit & Loss and Day Book

A P&L that leaves tax out of revenue and cost, and every voucher in one chronological list.

Balance sheet and ageing

Trial balance, balance sheet and receivables and payables ageing as of any date.

GST reports

GSTR-1 and GSTR-3B summaries with HSN/SAC and tax-slab breakdowns.

Bank reconciliation

Book against passbook balances, uncleared cheques and deposits, and detailed statements.

Control & setup

Decide who sees what, keep a record of every change, and make the paperwork yours.

Up to 3 companies, one subscription

Create and switch between up to three companies under a single Onyx Bills subscription.

Roles and menu access

Administrator, User and Accounts roles, with each sidebar menu shown or hidden per role. Accounts is made for finance and reports.

Audit trail

Who created, changed, cancelled or deleted which voucher, with time, IP address and severity.

Login history

A log of every sign-in attempt against your company, successful or not.

Print layouts

A4, A5, A6 and 80 mm thermal paper, named copies such as Original for Recipient, and your logo and terms.

Numbering and financial years

Voucher prefixes and suffixes, numbering that resets yearly, and years you can close once final.

Three languages

Switch the interface between English, ไทย and Tiếng Việt.

All Onyx Bills features

Onyx Combo

Post it once. Stock follows.

Sale and purchase stock entries made in the Onyx Bills billing panel are synced to Onyx Inventory — so billing and stores work from the same numbers, without double entry.

Billing panel

Onyx Bills

  • Sales invoice
  • Purchase invoice
  • Payments and books
Combo Sync
Stores & Manufacturing Plant

Onyx Inventory

  • Stock-in & stock-out
  • BOM & manufacturing
  • Reorder alerts

Explore Onyx Combo

For Manufacturing Plants

From raw material to finished goods, on the record.

Masters and entries wait as pending until someone approves them, and the dashboard shows exactly what is waiting.

  1. Receive raw material

    Record stock-in against vendor invoices, or load opening stock with rates.

  2. Define the bill of materials

    List the components each finished product needs, with versions as the recipe changes.

  3. Record the run

    Pick the product, BOM and quantity. Raw materials are consumed and production cost is recorded.

  4. Dispatch and sell

    Issue stock-out with a purpose, and track movement, ledgers and low-stock alerts.

Multiple companies

Up to 3 companies. One subscription.

Run a family of businesses, a branch with its own books, or a new venture next to the old one — without paying for a second Onyx Bills plan.

  • Create up to three companies under a single subscription
  • No need to buy a separate plan for each company
  • Included with Onyx Bills and Onyx Combo
Learn more

Three companies, one subscription

Create up to three companies under one Onyx Bills subscription, instead of paying for a separate plan for each.

Reports

The reports your accountant will ask for.

Every list and report exports to PDF and Excel.

  • Day Book
  • Profit & Loss
  • Balance Sheet
  • Trial Balance
  • Receivables & Payables Ageing
  • GST Report
  • Bank Reconciliation
  • Itemized Sales
  • Itemized Purchases
  • Sales Performance
  • Stock Valuation
  • Near-Expiry Stock
  • Stock Movement
  • Audit Trail
Questions

Frequently asked questions

What is Onyx Bills?

Onyx Bills is cloud billing and accounting software with an inventory module. It handles GST and VAT invoicing, purchases, payments, double-entry accounting and reports for growing businesses.

What is Onyx Inventory?

Onyx Inventory is a separate product for Manufacturing Plants that buy raw material, assemble or make finished goods and sell them. It covers stock-in, stock-out, bill of materials, manufacturing entries and reorder alerts.

What is Onyx Combo?

Onyx Combo is both products in one pack. With Combo Sync, sale and purchase stock entries made in the Onyx Bills billing panel are synced to Onyx Inventory.

Which taxes and languages does Onyx Bills support?

Onyx Bills handles GST and VAT invoicing, and the interface can be switched between English, Thai and Vietnamese. Prices are listed in rupees, baht and dong; for other regions, contact us.

Can I run more than one company?

Yes. Up to three companies can be created under one Onyx Bills subscription.

Do you offer monthly and annual billing?

Yes. Annual billing costs ten times the monthly price.

Does Onyx Bills create e-Way Bills?

e-Way Bills for India are part of Onyx Bills.

Who is behind Onyx Bills?

Onyx Bills is a product of the brainhub | TECHNOLOGIES (DM BrainHub InfoTech Private Limited).

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Put billing, stock and books on one page.

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