TL;DR
Iron in Indonesia at 0.1344 gross Gold/PP, no input material and a 60% bonus.
Also Iron in Indonesia, because it is profit from Fidelity 1% and gives +4.993 gold/day at Fidelity 10%.
Gold/PP means margin per production point. For employees, the target net wage is converted into gross company cost using each country's income tax. These figures use queue prices, so they are useful signals, not guaranteed profit.
Top 3 for production
Where production looks best.
It wins through a 60% bonus, no input material, and queue-sale revenue of 0.084 gold per unit.
Gross Gold/PP: 0.1344
Bonus: 60% country 30% + ethic 30%
Buy/sell: 0.00 / 0.084
Margin per unit: 0.084
This is the cleanest production pick. If a company must be moved, payback is estimated at 4.9 days for production, 4.9 for location, or 7.3 for both.
Same no-input Iron setup, but with a slightly lower bonus and higher Income Tax than Indonesia.
Gross Gold/PP: 0.13104
Bonus: 56% country 26% + ethic 30%
Buy/sell: 0.00 / 0.084
Margin per unit: 0.084
Good second choice if Indonesia is not your preferred option due to Alliance / Enemy. Payback is 13.3 days for production or location, and 16.9 days for both.
Very close to second place thanks to a 60.5% bonus and no input material requirement.
Gross Gold/PP: 0.130005
Bonus: 60.5% country 31% + ethic 30%
Buy/sell: 0.00 / 0.081
Margin per unit: 0.081
Solid fallback if Iron price or liquidity weakens. Payback is 9.2 days for production, 9.2 for location, or 11.7 for both.
Top 3 for hiring employees
Where hiring looks best.
It can support a competitive wage with 9% Income Tax and still keeps strong Fidelity 10% profit, it is green from Fidelity 1%.
Income Tax: 9%
Gross wage per PP: 0.134066
Fidelity 10% profit: +4.992839 gold/day
Fidelity 10% net Gold/PP: 0.008734
If moving a company: 4.9 days for production, 4.9 for location, or 7.3 for both.
It uses input material, but the 6% Income Tax keeps gross wage per PP low and Fidelity 10% remains positive.
Icnome Tax: 6%
Gross wage per PP: 0.129787
Fidelity 10% profit: +3.731605 gold/day
Green from: Fidelity 2%
It turns green from fidelity 2%, with 0.363704 previous loss and 1.5 days to recover. If moving a company: 7.3 days for production, 7.3 for location, or 9.8 for both.
Good balance between 8% Income Tax, a 60.5% bonus, and positive Fidelity 10% profit.
Income Tax: 8%
Gross wage per PP: 0.132609
Fidelity 10% profit: +3.141969 gold/day
Fidelity 10% net Gold/PP: 0.005496
It turns green from Fidelity 4%, with 1.686992 previous loss and 2.4 days to recover. If moving a company: 9.2 days for production, 9.2 for location, or 11.7 for both.
How to read this
Prioritize high Gold/PP, specially on yuur Allied countries.
Keep decisions separate: The best production country is not always the best hiring country.