MONEY (TSQL Datatype)

Is a 16-bytes decimal number (base 10) with fixed precision (=19) and scale (=4).

Syntax

MONEY

Range

Range is same as for numeric(19,4).

-999999999999999.9999 to 999999999999999.9999

Remarks

This datatype represents monetary or currency values, with 4 digits after decimal point.

Internally, it is stored as a numeric(19,4).

The difference is that converting money to int rounds the result, whereas numeric is truncated to int.

Also, operations with money don’t change precision and scale of the result, as is the case with numeric.

Literal Money

Any literal number prefixed with the $ symbol is parsed as money.

$1234.50
$-45.25

Examples

DECLARE @a MONEY = 200;

PRINT (@a + $50.25) / 3; -- 'money' + 'money'   --> 'money'

PRINT (@a +  50.25) / 3; -- 'money' + 'numeric' --> 'numeric'

The result is:

83.4167               <--- 'money' results are always rounded to 4 digits after decimal point
83.416666666667       <--- 'numeric' datatypes store values with maximum accuracy

If you want to have the best accuracy during arithmetic calculation, you should use numeric datatype for currency and monetary values, instead of money.