How does the bank interest work?

[tiger]

The interest is received once per day on first log-in after midnight. You receive certain percentage on gold stored in the Capital. Interest percentage depends on your Bank level - 10% is the maximum. You receive interest only in case that on first log-in, gold is under maximum fortress capacity.
In case that you have negative gold or gold is over the maximum fortress capacity, interest is equal to 0 and added to your account as 0. In other words, you don’t receive interest  for that day. Clearing extra gold from the capital, logging out and logging in consecutively won’t help anymore, because interest has allready been received for that day.
So be sure that your gold will be under the fortress capacity limit in your Capital province on your first log-in, according to server time(GMT +2), not the time in your country.