Have you received your Avis this year ??
If so, even if it is zero - do take a look at the figures on the back.
My sources tell me that many folk made mistakes due to the new system.
Did you “tick” box 20P or did you miss it ??? (just think about it and check your figures.)
Of course, 20P does not apply to everyone but, if you notice something amiss or unusual on the breakdown of figures from the Impots people - then go and speak with your Local Office.
(For many people 20P works in their favour and they might be due a refund of some sort… due to deductions at source on investment income etc)