GST billing that sends itself, collects faster and never needs retyping.. Custom billing and invoicing software for Indian businesses: GST-compliant invoices, e-invoicing and e-way bills, recurring billing, UPI payment links, automatic WhatsApp reminders and live receivables reports. Connected to Tally or Zoho, built around how you actually bill, and handed over fully in your name.
We reply within one working day — with questions or a first scope.
Most Indian businesses don't lose money because they can't sell. They lose it between the sale and the payment: invoices made late, GST typed wrong, reminders forgotten, and a receivables sheet nobody fully trusts. Cartel Planet builds billing and invoicing software that closes that gap. Every invoice is accurate, compliant and sent on time, and every rupee owed to you is tracked until it lands in your account.
It's for any business that raises more invoices than a spreadsheet can safely handle, or whose off-the-shelf billing app has started forcing workarounds.
We don't sell you a fixed product with a monthly fee per user. We build billing software around your workflow, then hand it to you to own.
Generic billing apps are built for the average business. Yours isn't average. We start with a process audit, so we know exactly where time and money leak before we write a line of code. You get a fixed price in writing, a working demo on a live staging link every week, and modules that go live one at a time so billing never stops. The code, database, domain and accounts are all in your name. No per-user licence fees, no lock-in.
Understand, plan, build, test, launch and grow. A free discovery call, a written fixed-price scope, clickable designs before development, weekly demos, a strict pre-launch checklist and 30 days of free support after go-live.
Faster invoicing, fewer GST errors, quicker collections and a live picture of who owes you what. Most clients cut billing time sharply and see payments arrive sooner once reminders and payment links run on their own.
We're a team of developers, designers and business analysts who have built CRMs, ERPs and automation systems for Indian businesses across manufacturing, healthcare, education, retail and services. We speak GST, Tally and WhatsApp as fluently as we speak code. Transparent pricing, real people on call and WhatsApp, and a relationship that continues long after launch.
CGST, SGST, IGST and cess calculated automatically by place of supply, with HSN/SAC codes, reverse charge and composition handling built in.
Generate IRN, signed QR codes and e-way bills directly from the invoice screen, without logging into government portals separately.
Set it once and invoices go out monthly, quarterly or on project milestones, with prorations and auto-renewals handled for you.
Every invoice carries a UPI QR and payment link. Payments are matched to invoices automatically, so reconciliation takes minutes, not days.
Polite, scheduled reminders on WhatsApp, SMS and email before and after the due date, with escalation rules you control.
Invoices, receipts and ledgers sync with Tally or Zoho Books, so your accountant never retypes a single entry.
Live ageing, outstanding by customer, branch-wise sales and GSTR-1-ready summaries, exportable to Excel or PDF.
Decide who can create, edit, approve or cancel invoices. Every change is logged with user, time and before/after values.
Invoice layouts that match your brand and your industry, with multi-currency, multi-language and multi-GSTIN support.
Before we build, we map your current billing flow and estimate the hours and money saved, so you commit with clear numbers.
A free discovery call about how you bill today, who’s involved, what goes wrong and what your accountant needs. If we’re not the right fit, we’ll say so.
A written scope covering every module, integration, timeline and cost. Fixed price, no surprise invoices from us.
Clickable screens for invoice creation, dashboards and reports, reviewed by your billing team before development starts.
Development in phases with a weekly demo on a live staging link, so you see real progress and give feedback early.
GST calculations, integrations, permissions, speed and security tested against real invoices from your business.
We import your customers, products and opening balances, train your team and go live module by module, without disrupting billing.
30 days of free support, then an optional care plan for updates, GST rule changes and new features as you scale.
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From idea to paying subscribers.
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If a person is retyping it, we automate it.
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Founders, marketing heads and operations teams on what it was like to build with us — and what changed after launch.
Our buyers in labs and industry used to call us just to check a spec. Now the full catalogue is online with exact details, and bulk enquiries come in with the right information from the start. Cartel Planet understood how a precision-parts business actually sells.
We wanted to sell our honey, agarbattis and masalas directly and tell the hive-to-jar story behind them. Cartel Planet built a store that does both. Customers now see why our products are worth the price.
We publish job notifications, admit cards and results all day. The portal Cartel Planet built stays fast under that volume, and our readers can filter to exactly what they need.
We list plots, apartments, villas and commercial property across four states. Before, buyers couldn’t narrow anything down. Now they filter in seconds, and the enquiries we get are for properties that actually fit them.
We sell software to schools, hospitals and labs, plus hosting, training and SMS. Our old site made everyone read about everything. Cartel Planet restructured it so each visitor lands on what’s relevant to them.
We used to send PDFs and photos to dentists one chat at a time, and printed catalogues went stale immediately. Now it’s one link that’s always up to date. It saves us hours every week.
Straight answers on cost, timelines, ownership and support. Can't find yours? Ask us — a real person replies within one working day.
Typically ₹1,00,000 to ₹6,00,000, depending on modules, integrations and number of users or branches. You get a fixed price in writing before any work begins.
A focused billing system usually takes 6 to 10 weeks. Larger builds with ERP integration, customer portals or multi-branch setups can take up to 30 weeks. Modules go live in phases, so you start benefiting early.
Yes. It handles CGST, SGST, IGST, cess, reverse charge, credit and debit notes, and generates GSTR-1-ready reports. We also update it when GST rules change under your care plan.
Yes. We integrate with the e-invoice and e-way bill systems through an authorised GSP, so IRN, QR code and e-way bill numbers are generated directly from your invoice.
Yes. Invoices, receipts, customers and ledgers sync with Tally or Zoho Books, so your accounts stay updated without manual entry.
Yes. Each invoice can include a UPI QR code and a payment link through Razorpay, PayU, Cashfree or your preferred gateway. Payments are automatically marked against the right invoice.
Yes. We migrate customers, products, price lists, opening balances and invoice history from Excel, Tally, Busy, Vyapar or most legacy systems.
Ready-made apps work until your workflow doesn’t fit them. Custom software follows your exact pricing, approvals and reports, integrates with your other systems and has no per-user monthly fee. You own it.
You do. The code, database, domain and hosting accounts are handed over in your name at the end of the project.
Yes. We use role-based access, encrypted data, audit logs, secure hosting and automated daily backups.
Yes. The software is fully responsive, so you can create invoices, check payments and view reports from a phone or tablet. A dedicated mobile app can be added if needed.
30 days of free support and training are included. After that, you can choose a care plan covering updates, GST changes, backups and new features.
Tell us how you bill today. In one free 45-minute call, we’ll map where time and money are leaking, what the right system would look like, and exactly what it would cost. No pressure, no spam, and the scope is yours to keep.
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