Are there penalties for rulers having different religion to nation?

[Heindrich]

I have a national decision to convert my King and Heir to Protestant to match my state religion after the reformation... but it costs 2 stab and 20 legitimacy... is it worth it?

I had horrible luck with the Papacy in my Castile game and ended up getting excommunicated, so I converted to escape the excommunication penalties (sorta misclicked whilst deciding whether to do it lol)... but that then screwed up my relations with Naples so I have been unable to start integrating Naples for ~15 years! I just noticed that I have some pretty terrible relations penalties with Naples that I don't remember getting... and wondered if that's related to the discrepancy between ruler religion and state religion?

 

[Bellyfish]

Also curious about this. Think there are events you can get if your ruler is of a different culture but haven't seen anything related to religion yet.
You also get a similar decision if your consort is of a different religion

 

[makaramus]

I saw a youtuber had some nasty unrest rebel ... if you are tolerant or have very low unrest its not a trouble I assume but hitting to that event causes some rebels

 

[bradles0]

There are some pulse events that give you unrest from it, but it shouldn't ever be a problem unless you're already falling apart or Poland


Poland gets huge unrest penalties from electing heretic and seperate culture kings. It's annoying. That can stack on the event and cause up to +15 unrest in some provinces.

 

[AnssiA]

Yes, there is an event. It checks both ruler culture and religion, if both are wrong your true faith and main culture provinces receive +7 unrest. If only one is wrong, the corresponding type provinces gets +3 unrest.

 

[illathid]

This could be interesting for Prussia as the populace was largely Lutheran but the Hohenzollerns were Calvinists.