The money datatypes hold fixed precision values for currency
or monetary values.
money – monetary
values between -922,337,203,685,477.5808 and 922,337,203,685,477.5807,
with accuracy to 1/10000 of a monetary unit. Storage size
is 8 bytes.
smallmoney – monetary
values between -214,748.3648 and 214,748.3647, with accuracy to
1/10000 of a monetary unit. Storage size is 4 bytes.
Entry Format for Money Data
Precede money and smallmoney literal values with a U.S. dollar sign ($) to distinguish them from the floating point datatypes. For negative values, place the minus sign after the dollar sign.