desktop vs on-line version of software

[lagilbert1]

I calculated my taxes using both versions.  I used the same information, but came out with different amounts.  Why?

[rjs]

Compare the two 1040 forms line by line, starting at the top, and see where the difference is.

Which Online version are you using (Free Edition, Deluxe, Premium)? There are some tax situations that are not supported in all versions.