What are the implications of the Income Tax Return system that came into force in 2016 in Andorra?

https://all-andorra.com/implications-income-tax-return-system-came-force-2016-andorra/

The campaign for submitting IRPF income tax declarations will last from 1st April to 2d October, 2017

https://all-andorra.com/campaign-submitting-irpf-income-tax-declarations-will-last-1st-april-2d-october-2017/

Income tax Andorra

http://all-andorra.com/pay-income-tax/