What does Invoicing cost?

Nothing extra. Quantalog Invoicing is a free app in every workspace. A workspace admin turns it on in Apps, and your quotations, invoices and numbering are kept even if it is turned off again.

Is it a proper GST invoice?

Once your GSTIN is saved, documents are headed Tax invoice and carry your GSTIN, the client's when they are registered, a unique sequential number, HSN or SAC codes, the place of supply, and the tax split into CGST and SGST or IGST. E-invoicing through the GST portal and e-way bills are not supported yet.

Rupee invoices with a UPI ID show a QR code for the amount due, on the PDF and on the share link, so a client can pay from any UPI app. Your bank details are printed too. When the money arrives you mark the invoice Paid, and it moves to Collected.

Can I send invoices from Quantalog?

Yes. Share emails the document with the PDF attached, from your business name via Quantalog, and replies go to your billing email. You can send now or schedule it up to 90 days ahead, or turn on a private link and send that on WhatsApp, Telegram or your own email app.

Can I bill clients outside India?

Yes. Pick from eight currencies on each document, including US dollar, euro, pound and dirham. Leave the GSTIN blank if you are not registered for GST, and documents are headed Invoice rather than Tax invoice.

Can Orbit write the invoice for me?

It can draft one from a sentence, a photo or a PDF of a purchase order, edit it when you ask, and suggest HSN codes and GST rates. Nothing reaches the document until you accept it, and the totals always come from the same calculator as the editor.

Invoicing

Quote it. Invoice it.
Get paid.

Quotations and GST-ready invoices for the leads Quantalog brings in. Email them or share a link, collect by UPI, and see what is still owed.

Start invoicing free Read the docs

Or continue with

Quotation accepted on the link

QUO-0018 · Acme Retail

Accepted

Website redesign₹40,000
SEO audit₹10,000
CGST 9% + SGST 9%₹9,000

Amount due₹0

10
Document templates
8
Currencies
1
Click from quote to invoice
Free
In every workspace

The document

Everything your client needs to pay.

Your details, theirs, every line with its code and tax, the amount due in large type and a way to pay it. Nothing they have to write back and ask for.

INV-0042 · Acme Retail

Emailed with PDFViewed 3 times

Northwind Studio

14 MG Road, Bengaluru, Karnataka
GSTIN 29ABCDE1234F1Z5

Tax invoice

INV-0042 · Due in 15 days

Bill to

Acme Retail Pvt Ltd

Place of supply: Karnataka (29)

ItemSACQtyRateAmount
Website redesign, 5 pages998314140,00040,000
SEO audit and fixes998313110,00010,000
Support retainer9983164 Hrs1,5006,000

Subtotal: 56,000
Discount 5%: −2,800
CGST 9%: 4,788
SGST 9%: 4,788
Total: ₹62,776

Rupees Sixty Two Thousand Seven Hundred Seventy Six Only

Amount due

₹62,776

Due 14 Nov

Scan to pay

Any UPI app, for the exact amount, with INV-0042 as the note.

Bank transfer

HDFC Bank · IFSC HDFC0001234

From lead to paid

Three steps, nothing typed twice.

The lead fills in your form, you send a price, they accept it, and the invoice is already written.

Step 1
Quote the lead
Pick the customer, add saved items, and the dates, tax and totals fill in. Or describe it to Orbit and check the draft.
Step 2
They accept on the link
Email it with the PDF attached, or share a private link. The client accepts or declines on the page, with their name and a note.
Step 3
Invoice it and get paid
Convert the accepted quotation in one click. Rupee invoices carry a UPI QR for the amount due, and Paid moves it to Collected.

What it does

Billing for the work your site wins.

Built for freelancers, agencies and small businesses who would rather not keep a separate billing tool for a few invoices a month.

Quotations that become invoicesSend a price before the work is agreed. When the client says yes, convert it: every line, rate and tax is copied onto a new invoice with the next number in your series.
GST done the way the law asksTax invoice heading once your GSTIN is saved, HSN or SAC per line, place of supply from the client's GSTIN, and CGST and SGST or IGST worked out per line. Reverse charge and export under LUT are one switch each.
A UPI QR for the amount dueAdd your UPI ID and every rupee invoice prints a scan-to-pay code for the exact balance, with the invoice number as the payment note so the money is easy to match.
Email it, or send a linkEmail from your business name with the PDF attached, now or scheduled up to 90 days ahead. Or share a private link on WhatsApp or Telegram and see how often it was opened.
Customers and items, saved oncePick a customer and their address, GSTIN and state fill in. Pick an item and its rate, unit, code and GST rate follow. Each customer shows what they still owe.
Reports your accountant asks forInvoiced against collected by month, receivables by how late they are, sales by customer and item, days to pay, and a GST summary you can export for GSTR-1.
Bill abroad in their currencyEight currencies, set per document. Your summary converts everything into the currency you pick at the day's exchange rate, and the documents themselves never change.
Ten templates, your logo and colourFrom a quiet minimalist page to a bold banner header, each previewed with your own document on a laptop or a phone before you send it.

Read the invoicing docs

Part of Quantalog

Where your leads already are.

Invoicing sits in the same workspace as your forms and analytics, so the person who filled in your form is one click from a quotation.

Paid forms invoice themselvesTurn it on for a payment field and every paid response gets a paid invoice, numbered from your series, with the response linking straight to it.
Leads, then customersThe people your forms bring in are the people you quote. Respondents from paid forms are added to Customers for you.
One workspace, one set of rolesEditors and above create and send. Viewers never see prices or client details. Everything is shared with the rest of your team.

Included

What comes with every document.

Quotations and invoices with their own number series and prefixes
Convert an accepted quotation to an invoice in one click
Tax invoice heading, HSN and SAC codes, CGST and SGST or IGST per line
Prices that include tax, round off, reverse charge and export under LUT
UPI scan-to-pay QR on rupee invoices, plus your bank details
Email with the PDF attached, now or scheduled, from your business name
Private share links with view counts and accept or decline for quotations
Customers with outstanding and overdue totals, and a CSV statement
Saved items with rate, unit, code and GST rate
Receivables ageing, sales, payments and a GSTR-1 style export
Ten templates, seven accent colours and your logo
Amount in words, in lakh and crore for rupee totals

In fairness

What invoicing doesn't do.

There is no e-invoicing through the GST portal, no e-way bills and no filing of returns. The GSTR-1 export is laid out the way the return asks, but check it with your accountant before you file.

Payment is by UPI or bank transfer, and you mark an invoice Paid yourself; card payment links are planned. There are no recurring invoices either, so a monthly retainer is one Duplicate away rather than automatic.

Orbit AI

Ask instead of hunting for it.

Describe the invoice in a sentence, or attach a photo or PDF of a purchase order, and Orbit drafts the client, items, tax and due date. Ask for a discount or a new line and it changes only that, then suggests HSN codes and GST rates before you send.

How Orbit works

Invoice Acme for 3 days of consulting at 8,000 a day
Give 10% off and make it due on the 30th
Check the GST and HSN codes

FAQ

Common questions.

Nothing extra. Quantalog Invoicing is a free app in every workspace. A workspace admin turns it on in Apps, and your quotations, invoices and numbering are kept even if it is turned off again.
Once your GSTIN is saved, documents are headed Tax invoice and carry your GSTIN, the client's when they are registered, a unique sequential number, HSN or SAC codes, the place of supply, and the tax split into CGST and SGST or IGST. E-invoicing through the GST portal and e-way bills are not supported yet.
Rupee invoices with a UPI ID show a QR code for the amount due, on the PDF and on the share link, so a client can pay from any UPI app. Your bank details are printed too. When the money arrives you mark the invoice Paid, and it moves to Collected.
Yes. Share emails the document with the PDF attached, from your business name via Quantalog, and replies go to your billing email. You can send now or schedule it up to 90 days ahead, or turn on a private link and send that on WhatsApp, Telegram or your own email app.
Yes. Pick from eight currencies on each document, including US dollar, euro, pound and dirham. Leave the GSTIN blank if you are not registered for GST, and documents are headed Invoice rather than Tax invoice.
It can draft one from a sentence, a photo or a PDF of a purchase order, edit it when you ask, and suggest HSN codes and GST rates. Nothing reaches the document until you accept it, and the totals always come from the same calculator as the editor.

Works with

Better together.

Send your first invoice today.

Invoicing is free in every workspace, alongside your analytics and forms. No card, and no separate billing tool.

Start free Read the docs