What is pass-through/flow-through taxation?

In a pass-through (or flow-through) entity, the entity’s income and expenses “pass through” the entity and are treated as the income and expenses of its owners. LLCs and S-Corporations are pass-through entities. This differs from a C-Corpoartion (which is the default form of corporation) which is taxed a corporate income tax at the end of the fiscal year in addition to the personal income taxes and dividend taxes that its owners and employees pay. Federal corporate income tax is about 15% to 35% of profits, and most states also have corporate income tax. This means after a C-Corporation has paid its expenses for the year, it will be taxed at least 15%-35% of whatever is left above the amount the company started with that year. If the company is an LLC or an S-Corporation, there is no corporate tax, and indeed the owners can even apply losses of the company against their personal income.