Corporate taxes?

Hi, I just have a few questions regarding taxes involved in a corporation

1.) How are corporations taxed?
-Is it through company income? or individually by dividend shares a-la income tax? or both?

2.) If the company fails to yield profit, are the owners still obliged to pay income taxes?

3.) Lastly, is there a minimum "maintaining balance" required to keep a corp registered?
-The business im planning can definitely run with no monetary capital. Are financial statements something i should worry about?

Thanks! any input would be much appreciated