ocr: The Rules Once an account has been properly classitied it isa relatively straight-forward matter of applying the rules of double-entry book-keeping as laid out in the following table. We Debit When We We Credit When We Want To: Want To: (a)Increase an Asset Decrease an Asset ( (b)Decrease a Liability Increase a Liability (g) (c)Decrease Capital Increase Capital (h) (d)Decrease Income Increase Income (i) - (e)Increase Expense Decrease Expense (j)