Do I have to calculate a PCF and also my corporate carbon footprint?

Calculating a PCF is optional but adds value for you and your customer.

Calculating a product carbon footprint is optional. 

The functionality is free and allows you to calculate a PCF which usually can take months with consultancies. You can export the PCF and its methodology from the Emitwise platform so you can share with your other customers. 

On the other end, calculating PCFs allows your customer to increase the accuracy of their own calculations, and reflect the sustainable procurement decisions they're making.