If you can wait a bit, the form is supposed to be e-filable starting on March 12. You will likely have to install an update if you are using the desktop program, and the updates are sometimes not released to the end of the announced day rather than the morning.
I don't know anything else about this particular credit, but if you are using the desktop version of Home & Business installed on your own computer, you can switch to Forms mode and review the form itself to see the calculations.
