Finance, GST & Accounting · Invoicing
Invoices
Create GST invoices, send them over WhatsApp or email, record payments and track what is overdue in Sayl Finance.
What it is for
Invoices is where you bill customers and track what you are owed. The page opens with three numbers - how many invoices, how much is outstanding and how much is overdue - so the first thing you see is what needs chasing.
How it works
- An invoice is a draft until you issue it. Issuing gives it its number (INV-0001, INV-0002 …) and posts it to the ledger, which is what puts it into receivables and the reports.
- GST is worked out for you. The place of supply on the invoice decides the split: in your own state each line shows CGST and SGST, in another state it shows IGST.
- Payments are recorded against the invoice. A partly paid invoice shows Part paid and keeps its balance; paying it in full marks it Paid. Past its due date and unpaid, it is flagged Overdue.
- When you send an invoice for the first time, a secure no-login link is created so the customer can view, download and pay it themselves.
Step by step
Every screenshot is from the live demo. The highlighted button is the one to click - nothing here is saved in the demo, so you can follow along freely.
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Click New invoice
The button is at the top right (highlighted). Use Upload invoice instead to start from an existing invoice file.
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Choose the customer and add items
Pick who to bill under Bill to, then search products by name to add lines - the price, HSN/SAC and GST rate fill in. Set the company you bill under, a reference such as the customer's PO number, the due date and the place of supply. The total, with CGST/SGST or IGST, updates as you type.

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Save the draft or issue it
Save draft keeps it private and editable. Issue invoice numbers it and posts it to the ledger (highlighted).
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Key fields
- Bill to
- The customer; their GSTIN and address print on the invoice.
- Company
- Which of your legal entities issues it - see Companies.
- Reference
- The customer's PO number or your own reference.
- Due date
- When payment is due; drives Overdue and the aging reports.
- Place of supply
- GST state that decides IGST versus CGST + SGST.
Tips
- Add a custom field such as “Customer PO number” once and it appears on every invoice.
- Reminders (the Reminders tab) chase unpaid invoices automatically instead of you doing it by hand.
- Use a credit note - not an edit - to correct an invoice that has already been issued.



