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Nexta Web Solution
Software development & IT

GST billing software that keeps the counter moving and the accountant calm

Fast bills at the counter, e-invoices and e-way bills from the same screen, every branch in one report, and clean vouchers for Tally at month end. Built around how your shop or office really bills.

  • From ₹1,50,000 + GST. Custom software pricing: a ₹24,999 + GST discovery sprint, credited to the build, ends with a fixed written quote.
  • A real person on WhatsApp within 15 minutes, Mon–Sat 10 am–7 pm IST, in Bengali, Hindi or English.
  • You own the work. Code, files, accounts and data stay in your name, with an NDA on request.

Updated by the Nexta Web Solution team

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  • 5+ years experience
  • 10,000+ clients
  • MSME registered
  • ISO certified
  • PCI DSS certified
  • NIXI accredited

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  • 5+ years experience · 10,000+ clients

    Businesses in India, the UK, the Gulf and beyond

  • MSME · ISO · PCI DSS · NIXI

    Registered, certified and accredited. See details

  • Registered Pvt Ltd company

    CIN U62099WB2024PTC267968 · 2 offices in Hooghly

  • A real person on WhatsApp

    Reply within 15 minutes in office hours

Billing software development at Nexta, in short

GST billing software development means building invoicing and POS software around your business: counter billing, GST invoices, e-invoice and e-way bill generation, branch reports and Tally export. Nexta builds it for retailers, wholesalers, distributors and service firms whose billing has outgrown ready-made apps. Work starts with a paid discovery sprint and a fixed quote; a first version usually goes live in 8 to 12 weeks.

Two people working on laptops at a table in a sunlit office
PricingFrom ₹1,50,000 + GST
5+ years · 10,000+ clients

Where billing hurts in growing businesses

“At rush hour the billing screen hangs”

Saturday evening, a queue at the counter, and the software takes four seconds per item. Customers leave baskets behind and the cashier gets the blame.

“Internet goes, billing stops”

Cloud-only billing apps freeze when the broadband drops, and you end up writing bills by hand and entering them later, if anyone remembers.

“Our accountant re-enters every bill in Tally”

The billing software and the books never talk. Month end means days of typing, and every typo becomes a GST mismatch someone has to explain.

“We crossed the e-invoice limit and our software can't generate IRN”

Turnover grew, e-invoicing became mandatory, and now staff copy invoice details into the government portal one by one.

“Each branch runs its own copy”

Three shops, three databases, and no way to see today's total sales or which branch is giving the most discounts.

What our GST billing software development covers

A counter screen built for speed

Barcode scan or short item codes, keyboard shortcuts for every common action, and a bill printed on a thermal printer in a couple of seconds. Cashiers rarely need the mouse.

Works offline, syncs later

Each counter keeps a local copy of items and prices, so billing continues when the internet drops. Bills sync to the central server when the line returns, with numbering that never clashes.

GST invoices done right

HSN or SAC codes, CGST and SGST or IGST worked out from the place of supply, B2B and B2C formats, credit and debit notes, and reports shaped for your GSTR-1 filing.

E-invoice and e-way bill from the same screen

For businesses covered by e-invoicing, the software sends invoice data to the Invoice Registration Portal through an authorised API provider and prints the returned IRN and signed QR code on the bill. E-way bills can be generated for consignments that need one.

Branches, roles and controls

Central item and price lists with branch-level stock, cashier logins, discount limits by role, and an audit log for voids and edits. The owner's dashboard shows every branch, live.

Tally export without retyping

Sales, purchases, receipts and credit notes go to TallyPrime as vouchers through its XML import. Your accountant reviews instead of typing.

Payments and dues

UPI QR on the bill, card machines, split payments, customer credit limits and due reminders on WhatsApp for wholesale buyers.

From your counter to go-live

  1. 1Weeks 1-2

    Discovery sprint

    We watch a busy hour at your counter, list invoice types and tax cases, and check your e-invoice status with your CA. You get screens and a fixed quote.

  2. 2Week 3

    Design and test bills

    Counter screens and invoice layouts approved by you and your accountant, including sample GST and e-invoice outputs.

  3. 3Weeks 4-10

    Build and integrations

    POS, back office, offline sync, e-invoice and e-way bill APIs, Tally export, with weekly builds on a test counter.

  4. 4Weeks 10-12

    Parallel run

    One counter or branch bills on the new system while the old one continues, and your CA checks a full week of output.

  5. 5Go-live

    Rollout and training

    All counters switched, cashiers trained in Bengali, Hindi or English, and a quick-reference card at each till.

What you get

  • POS counter software for Windows or Android, with offline mode
  • Web back office for items, prices, branches, users and reports
  • GST invoice, credit note and debit note formats approved by your CA
  • E-invoice (IRN and QR) and e-way bill integration through an authorised API provider
  • TallyPrime voucher export or sync
  • Thermal and A4 print templates, with UPI QR
  • Branch dashboard, discount and void audit reports
  • Data import from your current billing software
  • Source code, database and admin access in your name

Pricing

From ₹1,50,000 + GST

₹1,77,000 including GST

Custom software pricing: a ₹24,999 + GST discovery sprint, credited to the build, ends with a fixed written quote. Custom billing software builds start from ₹1,50,000 + GST. E-invoice API provider charges, hardware such as printers and scanners, and any software licences are billed at cost.

Get my quote Book a free call

Every price shows GST and the total. Nothing is added after you enquire.

Why this is safer than it sounds

We tell you when Vyapar or myBillBook is enough

For a single shop with straightforward billing, a ready app costs less and works fine. We build custom billing only when speed, branches, integrations or special pricing rules make the ready apps a daily struggle.

Your CA is part of the project

Invoice formats, tax logic and Tally mapping are signed off by your accountant before go-live. That is how GST mismatches are avoided, not fixed afterwards.

Compliance changes are planned for

GST rules and portal APIs change. Tax rates, invoice formats and API settings live in configuration, not hard-coded, and our maintenance plan covers updates when notifications change.

PCI DSS certified company

Nexta is PCI DSS certified, and we keep card data out of your billing system by using certified payment terminals and gateways, which keeps your own compliance scope small.

Is this right for you?

A good fit if

  • Retail chains and supermarkets with several counters or branches
  • Wholesalers and distributors billing hundreds of B2B invoices a day with e-way bills
  • Businesses covered by e-invoicing whose current software cannot generate IRNs
  • Firms with unusual pricing: schemes, slabs, customer-wise rates or weight-based billing

Probably not the right fit if

  • A single small shop with simple billing: a ready GST billing app is cheaper
  • Businesses wanting a full accounting package to replace Tally: we sync to Tally, we do not replace it
  • Anyone needing recurring subscription billing: see our subscription management software page

Billing software development: frequently asked questions

Something else? Call +91 7500-4300-91 or WhatsApp us.

A custom billing system from Nexta starts from ₹1,50,000 + GST. The price depends on the number of branches and counters, e-invoice and e-way bill integration, offline mode and the Tally link. The ₹24,999 discovery sprint is credited to the build and ends with a fixed written quote. API provider fees for e-invoicing and hardware are extra at cost.

It depends on your aggregate turnover. The government lowered the e-invoicing threshold to Rs 5 crore with effect from 1 August 2023, so many mid-sized traders and manufacturers are now covered. The rules on which invoices and which businesses are included have details and exceptions, so confirm your position with your CA. If you are covered, your billing software must get an IRN for each eligible invoice.

Yes. For goods consignments valued above Rs 50,000, an e-way bill is generally required. The software can create it from the invoice, filling vehicle and transporter details, so staff do not retype on the portal. Some states and goods have their own rules, so we configure this with your CA during discovery.

Yes. Counter billing keeps working on a local copy and syncs when the connection returns. E-invoice IRNs need the internet, so B2B bills that need an IRN are queued and registered as soon as the line is back. We agree with your accountant how to handle that window so dispatch and paperwork stay in order.

Yes. Sales, purchases, receipts and credit notes are exported to TallyPrime as vouchers through its XML import, either automatically or on a button press. Ledgers and stock items are mapped once with your accountant. After that, month-end becomes a review instead of days of data entry.

For many small businesses, you should. Those apps are affordable and cover standard billing well. Custom software makes sense when you need very fast counters, many branches under one view, special pricing rules, deep integration with your inventory or CRM, or you simply want to own the system rather than rent it.

A first version for one business with a few branches usually takes 8 to 12 weeks after discovery, including a parallel run checked by your CA. Larger rollouts with many counters are done branch by branch. The go-live date is written into the quote, and we avoid switching over during your peak season.

Yes. For clients in the UK, the Gulf, Australia and North America we build invoicing and POS software around local tax rules, such as VAT invoices, with fixed quotes in USD, GBP or AED on request. Country-specific e-invoicing requirements are checked with your accountant during discovery.

Sources: GST Council: Notification 10/2023-Central Tax (e-invoice threshold to five crore rupees) · GST Council: GST flyer on e-way bill (consignments above Rs 50,000) · GSTN e-Invoice portal: IRP returns IRN, signed e-invoice and QR code · Tally: Getting started with Tally integrations

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Billing software development for businesses in Hooghly, Kolkata and worldwide

We are based in Hooghly, with offices in Ramanathpur and near the LIC Office in Chanditala. We work with businesses in Chanditala, Serampore, Chinsurah, Chandannagar, Uttarpara, Arambagh, Howrah, Kolkata and the rest of West Bengal, and we are happy to meet at our office or yours.

Talk to us in Bengali, Hindi or English, on WhatsApp or at our office.

Our Hooghly and Kolkata page

Head office

Ramanathpur, Hooghly

Plot No-229, Ramanathpur
Hooghly, West Bengal 712704
India

Mon–Sat, 10:00 AM – 7:00 PM IST

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Branch office

Chanditala, Hooghly

Near LIC Office, Chanditala
Hooghly, West Bengal 712702
India

Mon–Sat, 10:00 AM – 7:00 PM IST

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