Tax Negative IRPF Spain

[Javiermona]

Hello, I want to know how I can set a negative tax. In Spain, there is a 15% negative withholding. The app does not allow setting negative taxes. What I did was to set the value to negative in the database and changed 15 to -15, and it accepted it. I also modified a field in the invoice table to respect the negative value. Now what happens is that the reports show an error due to this change I made. I don't know Laravel, and it is very difficult for me to find a way to develop it. Does anyone have an idea on how to do it?

[rihards-simanovics]

quick reminder the software is abandonware and will no longer receive updates: #1265

[rihards-simanovics]

❗Attention❗

Please migrate to InvoiceShelf, a fork of crater which continues the development of this project.

More info on new fork availible in this issue: #1281

[Javiermona]

In the new version, there are no errors. Thank you.