Vbnet+billing+software+source+code !new! — Reliable

Presentation Layer (UI): Windows Forms (.vb files) for user interaction.

End Sub

Private Sub PrintBill() ' Simple print simulation – replace with PrintDocument for actual printing Dim billText As String = "---- INVOICE ----" & vbCrLf For Each item In billItems billText &= $"item.ProductName xitem.Quantity @ item.Price:C = item.Total:C" & vbCrLf Next billText &= $"Subtotal: lblSubtotal.Text" & vbCrLf billText &= $"GST (18%): lblTax.Text" & vbCrLf billText &= $"Total: lblTotal.Text" & vbCrLf

Sales Invoice Entry (Header + Details)
Auto-calculation of taxable value, CGST, SGST, and total.

To make this software "production-ready," you must save these transactions to a database like SQL Server. Here is the standard connection string and save logic: vbnet+billing+software+source+code