Not a spreadsheet with a payment button
Billing posts to a real accounting service: vouchers, periods, trial balance and financial statements. Closing a month locks it, and later corrections go through notes rather than edits.
Product
Double-entry accounting sits behind the invoice, not beside it. Every payment, refund, credit note and write-off posts to a general ledger, so the revenue figure on the dashboard is the figure in the books.
Numbered, sequential and issued per branch.
Inclusive and exclusive pricing, HSN/SAC codes, and returns data.
Corrections that leave the original invoice intact.
Outstanding dues by member, branch and age.
Cash, card, UPI and bank transfer, reconciled against bank statements.
Every transaction posts to a double-entry GL with periods you can close.
Billing posts to a real accounting service: vouchers, periods, trial balance and financial statements. Closing a month locks it, and later corrections go through notes rather than edits.
GST computation, e-invoice and e-way integration paths are part of the platform rather than an add-on, because retro-fitting tax into a billing model rarely ends well.