The Power of Compounding!

Warren Buffett would be very happy with the treasury. It allows you to almost double your gold in 30 days at treasury level 1 (which requires Stronghold level 15). You need to deposit a minimum of 10,000 gold so start saving. It's a very expensive building to upgrade but it is well worth the resources. At the max level of 7 you can deposit 20,000 and in 30 days you will earn 21,000 in interest. In dollar terms this is roughly worth $15-$20. You can deposit your gold for 7 days, 15 days or 30 days and earn the following base interest rates:

Days Rate
73%
1427%
3085%


Building Costs

You get a level 1 treasury automatically when you have a Stronghold level 15. From here you can upgrade it. Below M stands for million.

Level Time Wood Stone Food Ore War Bonds SH Lvl Hero XP Power Bonus Rate Max Deposit
2 15 0% 10,000
2 3M 3M 3M 3M 5 16 +8,000 +68,565 1% 11,000
3 6M 6M 6M 6M 25 17 +8,400 +34,475 2% 12,000
4 9M 9M 9M 9M 80 18 4% 13,000
5 13.5M 13.5M 13.5M 13.5M 295 19 +9,200 +77,560 7% 14,000
6 16M 16M 16M 16M 900 20 12% 15,000
7 ??? ??? ??? ??? ??? 21 20% 20,000