Option to make Dummy Invoice

Is it possible to make Dummy Invoices that dont show up into the accounting? This is for the purposes of Pro-forma invoices, or for submitting an invoice to a client without deal execution, just to ensure I can reduce the number of days of credit, or sometimes for bank purposes.

I want to be able to separate these from the accounts, and dont want to show a sudden boost in profit, because I have created these dummy invoices.

Use Sales Quotes, you can easily edit the heading of every quote to everything you prefer e.g Estimate, Proforma Invoice or whatever. You can even set it as default.

Enable sales quotes model if you haven’t.
All the best