Board Thread:General Discussion/@comment-203.186.25.14-20130927065623/@comment-3153244-20130927085015

In BTD5:

Cash yield: (info on Money page)
 * 100% in rounds 1-51
 * 50% in rounds 52-61
 * 20% in rounds 62-85

I'm not sure about XP yield, I'm still testing