Yes, with currency calculations you need to be careful. As it is in VFP9 Help for currency data type:
*--------------------
If you specify more than four decimal places in a currency expression, Visual FoxPro rounds to the expression to four places before evaluating the expression.
*-------------

And for your example:
$5000.00 * 0.01099 = 55.00.

But:
$5.00 * 10.99 = 54.95
$5000.00 * 10.99 * 10^(-3)= 54.95



>Sorry.
>It happens when the data is currency (Y).
>
>Like $5000.00 * 0.01099 = 55.00.
>
>Thanks.