What exactly is the mechanics of gaining/losing money for protector/protectorat

[Charge]

This was in 1.0 while I played as Seleucids. I conquered almost all eastern provinces, and just for fun offered protectorate to Armenia for map and $10,000. They accept, but next turn happened this...
Than I reloaded campaign and make same things, stealing happened again...

[Schatten]

protectorate is nice, if i play roman i usually make arverni or aedui protectorate and build a line of their provinces betwen me and sweboz.

but everytime they stop all their activity....even if they in war with a other faction they do nothing more...their army sit around, it even looks that they dont build new units or only real few, they dont attack anything more even if we both in war with those faction they do nothing.

if the protectorate is broken they start to act normal....

[overweightninja]

This was in 1.0 while I played as Seleucids. I conquered almost all eastern provinces, and just for fun offered protectorate to Armenia for map and $10,000. They accept, but next turn happened this...
Than I reloaded campaign and make same things, stealing happened again...

Yes that's a bug in 1.0, the problem is corrected in later RTW builds.

[Centurion Crastinus]

What's the best way to make someone a protectorate? The AI is always unwilling to do so with me.

[johnhughthom]

I have never been able to get the AI to accept protectorate either. Seemingly you need to inflict a number of crushing defeats on your enemy until they are barely hanging on and then offer them a huge amount of money to get them to agree(though you get it back within a few turns). I wonder if the fact I play VH campaign makes it impossible to get a protectorate, but then most EB players play that difficulty so that may not be the reason if others in this thread can get them. I find it quite frustrating as I don't like to kill off factions but more often than not I'm forced into it.

[Bactron]

If you are not able to gain protectorates. Then listen up.
You both should try Forced diplomacy minimod. It's really good option since the normal diplomacy is quite bad. And if you make some house-rules and will not abuse it then it is really good thing.

I for example use it but only with these rules - I must have a large and powerful empire in order to make someone my protectorate. The enemy has to suffer lots of defeats from me, and that faction has to have only one or two remaining provinces, then I usually send a full stack/s to (both)their remaining province/s I march right next to their cities. And then I use a force diplomacy to make them to accept it.

[Centurion Crastinus]

Where can I find the forced diplomacy mini-mod? Also, if someone is my protectorate, can I later declare war on them if the need arises?

[johnhughthom]

https://forums.totalwar.org/vb/showthread.php?t=80763

[Bactron]

Also, if someone is my protectorate, can I later declare war on them if the need arises?

Yes you can still attack them if you want.