What is the optimal tax rate to set in Sim City 166 viewsMarch 11, 2013sim city simcity Anonymous March 10, 2013 0 Comments I got into trouble with finances and I am trying to get back on track but the population won’t grow. What is the optimal tax rate to set for each earning type once you have a finance department at city hall? Want encourage city growth again. 0 AnswersActiveVotedNewestOldest Login with: Register or LoginCan you help other gamers by anwering questions? Read all the latest additions.