How to increase gold income?

Gold has no storage and it's produced by Mints. Mints need more population to produce more gold. So to produce more gold, you need to upgrade mints (of course) and houses to your base level.

Remember that mints need to connect to road all the time. And you need to maintain enough food and water in the tavern, otherwise population will decrease and it will then decrease gold production.

To maximize production and gain more gold, there's 3 hero that you need to level up and skill up.

First hero is Orange the Merchant. Make him reach level 50 and maximize all his skills. For starter, skill 1, 2 and 3 should be 10. Remember, this hero is very rare.

Second hero is Blue Fur Trader. Make him level 50 and all skill should be level 10.

Third hero is Green Goldsmith Apprentice. Make him level 50, and all skill should be level 10.

After upgrade all that heroes, click on one of the mint, click skill (book icon) then click use on all available skills. You have to repeat to click on those skill every day (they affect 22 hours only, not forever)

Other than that, you can also check and want to increase skill 4 of Carriage Driver, skill 2 of Organizer and skill 4 of Guild Master.

If still you need more gold, then you can exchange RSS to gold in the trading house (If you know the secret, you can exchange 3 times a day). Sure you also need to upgrade your trading house to your base level.

That's it. Enjoy your everyday gold

Build and upgrade all of your Mint buildings. Make sure you have enough population for them to operate at 100% and enough charcoal for production. (you can tap the gold value at the top of the screen and check the efficiency to see if this is below 100%).

Complete research under Town Development to improve the gold production rate. And recruit and station heroes that have skills to boost gold production. e.g. Fur Trader

Use the War Horn to get gold and of course complete as many event challenges as you can each day to earn gold in reward crates.