Invoicing software for service businesses that bill by project, month or hour

A service business has no stock to count, but billing still eats hours. The work is done, and the money arrives weeks later, if someone remembers to ask.

• Retyping. The quotation is in one file, the invoice in another, and the numbers drift apart.
• Monthly retainers. The same invoice is rebuilt by hand every month, and one month it is forgotten.
• Chasing payments. Nobody likes calling a client about an overdue bill, so it waits.
• TDS confusion. Clients pay less than the invoice amount because of TDS, and the difference sits unexplained in your books.
• SAC codes and GST. Getting the tax split right when some clients are in your state and some are not.
• Scattered records. Invoices in Word, payments in the bank app, and no single view of who owes what.

1. 1

   Send a quotation

   List each service with its SAC code, rate and GST. Share it as a PDF, or send the client a portal link where they can accept or reject it online.

2. 2

   Take an advance if you need one

   Raise a proforma invoice for the advance amount before work starts.

3. 3

   Convert to a tax invoice

   When the job is approved, convert the quotation or proforma into an invoice. Line items, terms and notes carry over, the invoice gets the next number in your series, and the quotation is marked converted.

Need a starting point for the layout? See our quotation format and proforma invoice format guides.

Set up a recurring bill once with the client, line items and frequency (anywhere from daily to yearly) and an optional end date. JustBill generates each invoice on schedule overnight. If you prefer to review first, a billing run shows every recurring invoice that is due, then creates them together in one action. Each one is a normal invoice, so it appears in your reports, reminders and GST data like any other.

Connect your own Razorpay account in Settings and create a payment link for any unpaid invoice, or for many invoices at once. Share the invoice on WhatsApp with its PDF link, or print a UPI QR for the balance due. Payments received are allocated against open invoices, and one payment can clear several bills.

Automatic reminders go out 3, 7 and 14 days after the due date through the channels you enable in reminder settings. When you send a reminder by hand, JustBill picks a firmer channel the longer the invoice has been overdue, and logs each one:

A collections list shows every overdue invoice sorted by days overdue, with the client's phone number and the last reminder sent, so follow-up takes minutes each morning.

Search HSN and SAC codes from inside the item form, so every service line carries the right code and rate. JustBill charges CGST plus SGST or IGST based on the client's place of supply, and you can mark a client as SEZ or export so the tax is handled correctly.

Business clients often deduct TDS on professional or contract fees before paying you. Record the TDS section and rate on the invoice so the expected shortfall is explained in the client's balance. At year-end, import your Form 26AS and JustBill matches the TDS credits against your invoices, listing anything that does not match.