I need to manually add benefit contribution to the forms before submitting. How do I manually update in QBO before sending to CRA?

Hi amckay1, 

Welcome to the Community! Using QuickBooks Online Payroll is a fantastic way to keep all of your accounting processes in one place and help keep your books organized. I want to ensure that you're able to get your benefit contributions adjusted within the program. 

In QuickBooks Online Payroll, the information in forms such as T4s or the PD7A forms pull directly from the payrun data within the software. There isn't a way to adjust the amounts outside of running a pay run with the benefits amounts. I recommend getting in touch with our payroll support team outside of the Community so that they can assist you with making the necessary adjustments for your benefit contributions. Here are your options for connecting with them: 

Phone: Call 1-855-253-1536 from Monday to Friday from 9 a.m. to 8 p.m. EST.
Schedule a Callback or Chat: Click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat. Support is available from Monday to Friday between 9 a.m. and 8 p.m. ET.

If there's anything else I can assist with here in the Community please let me know!