Currency variables are stored as 64-bit (8-byte) numbers in an integer format, scaled by 10,000 to give a fixed-point number with 15 digits to the left of the decimal point and 4 digits to the right. This representation provides a range of -922,337,203,685,477.5808 to 922,337,203,685,477.5807. The type-declaration character for Currency is the at sign (@).
The Currency data type is useful for calculations involving money and for fixed-point calculations in which accuracy is particularly important.