I came across some weird credit calculation issues playing Advent. Haven't testet it with TEC, yet, but so far as far as I can see the planet item bonuses for credit income are either calculated wrong or do not even apply to global income.

So to start off here is a desert planet with an overall credit income of 11.2/s (9.2/s + 2.0/s from tech):

If I build the planet item "Sanctuary Spire" it should apply a +50%-bonus on the flat credit income/s. In this case the calculated amount should be 11.2/s x 1.5 (50%) = 16.8/s.

But it's actually missing 1.0/s:

Took me a while, but it looks like the +50% bonus does only apply to the planets commerce base stat (in this case 9.2/s), which is strange since the base stats change by receiving specific tech upgrades. Yet it seems like the total calculation is either only intended to target the planets natural commerce income, which would be weird in my opinion, or it's bugged and overlooks bonuses applied by tech. Either way this is quite misleading and confusing!

But "Sanctuary Spire" is not the only item that seems to have some issues.

If I build a "PsiCredit Mint" instead of the "Sanctuary Spire" it should add a flat +2.4/s to my planetary credit income:

The planets base income (as shown in the above picture) is 9.2/s + 2.4/s by the planet item "PsiCredit Mint" + 2.0/s "Thriving Desert Civics"-Tech = 13.6/s total

So in the credit income overview it shows the correct planetary income of 13.6/s as expected. But if we do the math here:

Meduna 13.6/s
+ Chione 1.8/s
+ Cebriones 1.2/s
+Praxedis 1.2/s

the total income should amount to 17.8/s. So locally the 2.4/s add to the planets income, but it's actually not added to the global income at all, missing exactly the 2.4/s credits the "PsiCredit Mint" should provide. Same goes for the crystal income. Here the overall income should be reduced by 1.2/s it also shows the reduced amount/s in the planets total income, but doesn't add or in this case substract from the global crystal income.

To get things even more funny we now add the "Sanctuary Spire" back to our calculation. So we already know that something is funny with this planet item, but let's have a look at how our income rates change:

Now this is interesting. In the tooltip of the "PsiCredit Mint" the planets base income (without tech!) increased from 9.2/s to 13.8/s which is an increase by exactly +50%. The difference between 13.8/s and 16.2/s is, again 2.4/s so it's obvious the +50% bonus does not apply to the (expected) flat 2.4/s income provided by "PsiCredit Mint".

You could say "hey, the tooltip of "Sanctuary Spire" states that it only increased the "Commerce income" provided by improving a planets "Commerce" developement", but this...

13.8/s Planet base income
+ 2.0/s Tech bonus
+ 2.4/s Psi Credit Mint bonus
= 18.2/s total planetary income

...exactly equals the "Credit Income" shown in the "Commerce" tooltip and it also shows up in the global income tab:

If the +50% bonus is not intended to modify the flat 2.4/s credit income provided by "PsiCredit Mint" (or other bonuses like tech) the 2.4/s bonus (or any other flat bonus) should NOT add to the "Credit Income" shown in the "Commerce" info tab above.

If it is actually intended that the% bonus provided by "Sanctuary Spire" should also apply to flat bonuses, it's calculation is obviously faulty and needs to be fixed for "PsiCredit Mint" (and any other flat bonus modifiers). Again, either way this is misleading and confusing.

Thank for reading