Edit: Updated to Include Leonis Empire
Latest Link: https://drive.google.com/open?id=0B_JkzjaHN8hkU1RIM3EwbDhzREE
After going through the brilliant Kingdom Bonus Guide by @KAYA43V3R I mentioned that it would be great if it also included a tribute calculator, and lo and behold, he has done another amazing job here.
The file is Excel based and can be found here:
There are 2 worksheets with an image of each shown below. The first sheet is used to select which kingdoms you have unlocked and also for specifying your home kingdom. The second sheet requires you to input each kingdoms level, star level and quest completion status - your hero level can also be entered.
The outputs from his excel are:
(1) Average resources received per tribute
(2) Subsequent resources expected each week
(3) Daily gold income from kingdoms
(4) A players attack, health, armour and magic stats due to hero and kingdom levels/stars
(5) Mastery levels gained from kingdom level