Why does Swim use TAX exclusive markups?

Swim uses tax exclusive markups because the tax is excluded when looking at profits. For instance, the gross profit on sales reports is calculated by the sales price, less tax, less cost.  When comparing gross profit and gross margin on sales reports to stock reports, it is important that the same calculation is used.  So for this reason, the markup used when entering stock and the markup used on stock reports does not include tax.