Income statement effects
Exhibit 6.10 shows the effects of inventory errors on key amounts in the current and next period's income statement. Let's look at row 1 and year 1. we see that understating ending inventory overstates cost of goods sold. This can be seen from the above inventory relation where we subtract a smaller ending inventory amount in computing cost of goods sold. Then a higher cost of goods sold yields a lower income.
to understand year 2 of row 1, remember that an understated ending inventory relation, we see that if beginning inventory is understated, then cost of goods sold is understated. A lower cost of goods sold yields a higher income.
turning to overstatements, let's look at row 2 and year 1. If ending inventory is overstated, we use the inventory relation to see that cost of goods sold is understated. A lower cost of goods sold yields a higher income.
For year 2 of row 2, we again recall that an overstated ending inventory is overstated, we use the inventory relation to see that cost of goods sold is overstated. A higher cost of goods sold yields a lower income.