Mark,
First, change the names of those fields.
Avoid spaces in names. (if you do have a name with spaces,
make sure you always bracket... ex. [Billed Amount])
When in doubt... bracket.
Avoid Access reserved words, and special characters. The $ designates
a string in Access, and should be avoided used in object names.
[Billed] - [Paid] = [Saving]
--
hth
Al Campagna
Microsoft Access MVP 2007-2009
http://home.comcast.net/~cccsolutions/index.html
"Find a job that you love... and you'll never work a day in your life."