GST Invoicing & Billing Software with E-Invoicing
From quote to tax invoice to collection — raise compliant GST invoices, automate recurring billing and chase every overdue rupee in one flow.
Overview
Invoicing & Billing turns quotes into GST-compliant tax invoices with correct HSN/SAC, tax splits and payment terms baked in. Generate IRN e-invoices and e-way bills where thresholds apply, issue credit and debit notes for adjustments, and keep every document linked to the customer ledger.
Recurring invoices run subscriptions and retainers on autopilot, while automated dunning sends staged reminders on overdue balances. Receipts and payments reconcile against the right invoice automatically, so accounts receivable stays clean and days-to-collect keeps falling.
Explore Custom Applications →- ✓ GST tax invoices with HSN/SAC and CGST/SGST/IGST splits
- ✓ IRN e-invoicing and e-way bill generation where applicable
- ✓ Quotes and proformas that convert to invoices in a click
- ✓ Recurring invoices for subscriptions and retainers
- ✓ Automated dunning with staged overdue reminders
- ✓ Credit notes, debit notes and receipt reconciliation
Everything Invoicing & Billing gives you
GST Invoicing
Raise tax invoices with correct HSN/SAC, tax breakup, place of supply and payment terms captured automatically.
E-Invoicing
Generate IRN and QR-coded e-invoices and e-way bills where turnover and value thresholds require them.
Recurring Billing
Automate subscription and retainer invoices on set frequencies with next-run dates and end conditions.
Automated Dunning
Send staged reminders on overdue invoices and track each customer's dunning stage and outstanding amount.
Credit & Debit Notes
Issue adjustments against original invoices so returns and corrections keep the books balanced.
Payment Matching
Reconcile receipts and payments to the right invoice with UTR references and running balance due.
How the agent works with Invoicing & Billing
The Flow-Cognition Agent runs a real loop on your Invoicing & Billing data — grounded in your records, governed and logged.
Sense
Reads invoices, payment history and overdue balances.
Decide
Predicts which invoices are likely to go overdue and which reminder to send next.
Act
Drafts the next dunning reminder and routes high-risk invoices to a collections owner to send, with every step logged.
Five-tier model routing · field-level permissions · full audit trail. See the AI layer →
Live in four steps
Quote or Bill
Create a quote or proforma, or raise a tax invoice directly with items, tax and terms pre-filled.
Generate E-Invoice
Push eligible invoices for IRN and e-way bill generation and attach the QR-coded document.
Send & Track
Deliver the invoice, then watch status move from sent to partially paid to settled.
Collect & Reconcile
Automated dunning chases dues while receipts match against invoices to close the balance.
Where teams put it to work
Subscription retainers
Set a recurring invoice once and let it bill monthly or quarterly, with reminders firing automatically if payment slips past the due date.
B2B e-invoicing mandate
For invoices above the e-invoicing threshold, generate IRN and QR codes at issue so every B2B document is portal-validated before it reaches the customer.
Sales returns adjustment
Issue a credit note linked to the original tax invoice so GST liability and the customer ledger both correct cleanly.
The payoff
Steadier collections
Staged reminders and receipt matching keep overdue balances visible and followed up.
E-invoice ready
IRN and e-way bill generation keep you compliant without switching to another portal.
No missed recurring bills
Subscriptions and retainers invoice on schedule without anyone remembering to raise them.
Clean receivables
Payments are matched to invoices, so AR ageing stays accurate.
Questions, answered
Yes. Eligible invoices can be pushed for Invoice Reference Number and QR-code generation, with IRN status stored against the invoice for audit and reference.
E-way bills can be generated for consignments that cross the value threshold, keeping goods movement documentation linked to the underlying invoice.
You define an amount, frequency and start and end dates, and the platform raises each invoice on its next-run date automatically until the schedule ends.
Automated dunning moves each overdue invoice through reminder stages, tracking last-sent dates, outstanding amount and the next reminder date per customer.
Credit and debit notes are linked to the original invoice so both the customer balance and the associated tax are adjusted, keeping your GST records consistent.
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See Invoicing & Billing in your workflow
Start free, or get a guided walkthrough with our team — on the one platform that runs Custom Applications and your whole business.

