1. Concepts of income Capital Maintenance Concept Under this concept corporate income for a period of time is the amount that may be paid to stockholders during that period and still enable the corporation to be as well off at the end of the period as it was at the b gingin1. Concepts of income Intermediate Accounting 4 The Income Statement and Income Recognition Capital Maintenance Concept Under this concept, corporate income for a period of time is the amount that may be paid to stockholders during that period and still enable the corporation to be as well off at the end of the period as it was at the beginning