Can i change the figures on an 2018 personal tax return, for informational purposes and print it?

[Critter]

Once you have filed the return and it was accepted for processing then you REALLY REALLY should NOT make any changed if you used the Online version.   If you want to make changes then use the amendment process and remove the changes before you finish. 

[VolvoGirl]

DO NOT CHANGE AN ONLINE RETURN!  You will overwrite it and your original return will be gone and the wrong info will transfer into next year.  Online only saves the last entries.

You can use the Desktop program and first make a copy of your return to test in.  The Desktop program can do unlimited returns and has more features and advantages over the online version.  If you used the Online version we can tell you how to switch to the Desktop program.