Taxation as a corporation will make your company subject to double taxation. So you pay income tax on the corporate entity, and then again when you move the money either through payroll or payout in dividends.
For a partnership or sole proprietor entity which is the default your taxation runs right through your income and gets taxed at that rate.
In both cases the expenses can be removed from the taxes though it is easier to track defered expenses in corporate entities then partnership versions (as in expenses that you have accrued but did not have sales to offset to get the tax sheild).
Since you already have income meansing sales above expenses then the simplicity of the tax problem is over stated and the default state will likely be your easiest solution.