Let's see.
1) TATW 3.2 do not utilize the Money Script (all that you showed us; I presume it was in earlier versions and has remained in MOS, but was removed in TATW).
So I would frankly propose you delete the entire Money-script.
The money are not needed, they add to the spam.
2A) What TATW do have is the Dept-script, and that is of interest to all TATW players.
In the first entry in the spoiler box england (Mordor) when AI, if their treasury is at -1000g or more, at turn start, get 5000g at their turn start.
All factions are given they same amounts, but a player could play around here.
As I mentioned earlier, for example Harad (spain) likely do not need any money added, or at least very llittle, since they have only one front usually and rich regions.
It's important to remember that good balance is about equity, not equality, as each faction has its own context.
2B) Now, in your case MOS has a Debt-script of it's own instead of the vanilla: "Carl - The Taxman", made by Fred Putz who was a skilled scripter. CTT is is over 1400 lines long so I can frankly say I have no clue what it does how, when or on what conditions.
Bonus money when at debt, dynamic changes to the kings purse and what not...
I'm not compitent enough to say what to do with it. I would propse you begin to test with leaving it as it is, and if the factiosn are still hording, then test to replace all of it with TATW's script.
3) Last the Kings Purse, that each faction has settled in descr_strat.txt
Code:
;#################################################################
;########################## MORDOR ############################# 15600
;#################################################################
faction england, balanced smith
ai_label evil
denari 14000
denari_kings_purse 4200
settlement castle
TATW players can play with this as they please, making a faction bonus greater or lower.
As for MOS, since CTT affects it, I would not suggest you edit it ATM.