First of all, you must fill in Form 121: https://impotsdirects.public.lu/dam-assets/fr/formulaires/entreprises_annexes/2020/121F-2020.pdf
In the "Tax sitatuation" form, tick "Our household realized a commercial profit" and save.
A new form "Commercial profit" will appear and you will have to tick "Do you have to report miscellaneous business profits?" Then add the amounts obtained in Form 121.
In the "Tax sitatuation" form, tick "Our household realized a commercial profit" and save.
A new form "Commercial profit" will appear and you will have to tick "Do you have to report miscellaneous business profits?" Then add the amounts obtained in Form 121.
Updated on: 25 / 02 / 2021