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| When I try to move the "Add Item to This Sale" form
under Windows XP, I immediately get a dialog box asking "Save new location?" and I can't move
the form. |
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This problem is caused by Microsoft changing the way Windows works. Do the following to fix:
- Right click the "My Computer" icon on the desktop.
- Click on the "Properties" selection.
- Click the "Advanced" tab.
- Click the "Settings" button in the area titled "Performance.
- Find the selection titled "Show window contents while dragging" and uncheck it.
(A checkmark can be added/removed from a checkbox by clicking on it with the mouse.)
- Click the "OK" button to save and exit the "Performance Options" dialog box.
- Click the "OK" button to save and exit the "System Properties" dialog box.
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Dealer says the net net sales (amount due the dealer) is wrong. |
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The formula for working out the commission, credit card charge, and net net sales for
the dealer is as follows:
- Sales tax (7% in our examples) is computed on the net sales amount of the item.
- The commission (8% in our examples) is computed on the net sales amount of the item.
- The credit card surcharge (2% in our examples) is computed on the total amount
of the sale (i.e., the net sales amount + the sales tax).
A couple of examples may help to clarify how the values are computed:
Example 1:
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Net sales $21.95
sales tax $1.5365 (7% of 21.95 -- the computer uses 5-6 decimal places)
commission $1.756 (8% of 21.95)
cc charge $0.46973 (2% of 23.4865 -- net sales + tax)
$21.95 net sales
- $1.756 commission
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$20.94
- $.46973 cc charge
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amount due
dealer $19.72427 (rounded to nearest penny = $19.72)
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Example 2:
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Net sales $10.00 (2 items @ $5 each)
sales tax $.56 (7% of 10.00 -- the computer uses 5-6 decimal places)
commission $0.8 (8% of 10.00)
cc charge $0.214 (2% of 10.00 -- net sales + tax)
10.00 net sales
- .80 commission
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9.20
- .214 cc charge
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amount due
dealer 8.986 (rounded to nearest penny = $8.99)
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As the computer works using 5-6 decimal places, but we work in dollars and cents, the final
value MUST BE ROUNDED to 2 decimal places (nearest penny).
In the first example, the amount was rounded DOWN to the nearest penny. In the 2nd example,
the amount was rounded UP to the nearest penny. You will find that almost every item is
rounded (either up or down) because the combination of selling price, quantity, discount,
and sales tax almost always compute to some 5-6 decimal value.
Some sales round up, some round down -- it's usually a wash -- in the absolute worst
possible case and every sale rounded down the dealer would lose at most $0.004999 per item
sold. It they sold 100 items this would amount to $0.4999 (50 cents -- rounded up).
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