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Accounting equation: does income really decrease equity?
The accounting equation, in short, is: This can be further broken down into: Which can be further broken down into: The GnuCash equation is right, though I would substitute the word equity in that equation with a more-specific paid-in capital. Equity is (simply put) made up of 2 parts: shareholders' equity and retained earnings. Shareholders' equity is the amount invested by shareholders. Retained earnings is the amount earned by the business on behalf of the shareholders. Retained earnings is directly affected by your net income (which is income minus expenses). An increase in income will result in an increase in retained earnings. This must be balanced somewhere. Usually an increase in an asset. It may also be balanced by a decrease in equity. Likewise, increase in expenses will result in a decrease in retained earnings, which must also be balanced.