Gross profit margin under LIFO ((sales – cost of goods sold) / sales) is (($7,000,000 − $5,000,000) / $7,000,000) = 28.6%. Under FIFO, cost of goods sold is reduced by the increase in the LIFO reserve, and the resulting FIFO gross profit margin is (($7,000,000 – ($5,000,000 – ($850,000 - $600,000)) / $7,000,000) = 32.1%. Note that the tax rate only affects income totals after income tax expense is shown and does not affect the gross profit margin. |
