The invoice template is specifically designed for Service Invoices in India but this can be used anywhere in the world with little customization.
There are two templates, one which populates the amount in words in Rupees and Paise and one which populates in Dollar and Cents. If you need to change these currencies, you can write to me to change them.
Invoice Template_International
The invoices are protected without any password so that formulas don't get disturbed.
Why is the file format xlsm? Are there macros in this document?