Invoice format and statutory requirements / terms & conditions

Currently we are making invoice in a very old software used during Excise Regime. It was useful at that time to maintain various registers. Now I feel it's outdated and I would like to make a new invoice format in Excel for easier maintenance and changes as an when needed. Can anyone give a format for invoicing domestic customers. What are the statutory notations which should be shown on invoice and what are the terms and conditions which I can put either on front page or on the back side?

Dear HBJ,
Though you have raised the query, you have not mentioned whether yours is B2B or B2C business, what is the nature of your industry and what is your finished product.
If it is B2B, then it is customary to mention all the terms and conditions in the quotation itself. When the negotiations with the client take place, either the revised quotation is sent or the client sends the Purchase Order (PO) which includes the negotiated terms and conditions as well. Under such circumstances, invoices need not have any additional information than the GST number.
Generally, in most of the invoices, a GST number is included. Additionally, when we buy a product from the roadside shops, we find the usual term "Goods once sold will not be taken back".
Thanks,
Dinesh Divekar

Dear Mr.Dinesh, thank you for the reply. We are a manufacturer so I think it comes under B2B as we make certain custom made items for OEM's as per their specifications.
You are right that terms & conditions should be part of the quotation and PO but if there are any terms which we can put on the invoice other than statutory requirements, please let me know.
Also let me know if there are any good invoice formats available which we can modify as per our needs.

Dear HBJ,
If you are into B2B business and if you are manufacturing a material that is used by OEMs then you must be purchasing the raw material. You may check the invoice of your suppliers and design your own. Nevertheless, you may go through the following links:
https://www.cbic.gov.in/resources//h...nd%20other.pdf
https://cleartax.in/s/gst-invoice
In the second link, a sample format of the invoice is also given.
Thanks,
Dinesh Divekar

Thank you. I will design my own based on those sent by our suppliers