The corporate dividend tax paid by individuals tops out at 20% today, so the example total should be $5.20. States usually tax both corporate profits and dividends at 5-10% also, so that's another 10-20% but that's usually deductible against the other taxes. Expect to keep about $4.30 from the $10 profit, if it's distributed as dividends.
The 20% rate only applies to qualified dividends. If you don't meet the qualifications (e.g. you don't satisfy the holding period requirements) the dividends are taxed at the higher ordinary income rate.
