Hello @jpercival ,

This has been a thorn in my side for many years.  Just moments ago, I sent feedback online about this prior to seeing your post.  I've asked them to allow all the Boxes in the T4A be available for negative and positive adjustments.  Currently, only positive adjustments are possible so you can add the amount you need to Box 105; you just can't remove the amount from Box 48, which is silly in my opinion.  This is what I have to do year after year to get my T4A's filed:

1. While in "review" mode in the T4A forms, enter amounts needed in other boxes on the T4A by double-clicking in the white space and entering the amount.

2.  Save/Print T4A as a PDF.

3.  Edit the PDF with a PDF editor by drawing a box around the amount in Box 48, and attributing a white outline and fill to the box.  I supposed you could print it, white-out Box 48, and then re-scan it, but then there can be print quality issues.

4.  Print the T4A's and summary.

And here's the rub:

5.  Put T4A's and Summary in an envelope and mail them to the CRA prior to the Feb 28 deadline.

Really, you ask???  In this day and age of electronic filing?  Unfortunately, yes.  You cannot e-file the T4A's because the amount you need to report will show up in both boxes on the T4A; Box 48 and the correct box you've added it to.  If you e-file them as is, the CRA will assume the total amount to be double what it should be.

I'm really not sure what is so difficult about adding the ability to type in a negative number to adjust the boxes on the form, but despite feedback on this issue, QB has seen fit not to enable that capability, forcing many of its users to manually file T4A's.

Hope this helps somewhat.  Good luck!

ADDENDUM:  You also don't necessarily have to print and mail the T4A's to CRA.  You can use Web Forms to file the T4A's electronically.  Sorry, I had forgotten about that.  You can still do the PDF trick to get accurate printed copies for yourself and the recipient of the T4A, but you can enter the amounts in the boxes where you want them online, using WebForms to file.  You will need your Access code, similar to filing the T4's.  Not quite as slick as being able to transmit them directly from Quickbooks, but is the next best thing.