negative tax (retention)

[jordibcbce]

Hi everyone,

I'm trying the free version of Express Invoice and I dont really know if it is possible to set a negative tax / retention, this is common in spain for the freelances.

How it should look like my invoice:

Gneral data

Article          qtty      Price     subtotal

potatoe         50            2€             100€

 

 

                                Subtotal:             100€

                                VAT(21%):            21€

                                IRPF(7%):              7€

                                Total: 100+21-7=114   ( the sum is shown only for this example, on the real invoice it is only the final result 

 

Is it possible to do it, and how??

Thanks