Hello there, brianm.
In QuickBooks Online there's no option to use the PO Box mailing address, only valid mailing addresses are required to receive the W2s. However, as a workaround, when entering a PO Box address, you can type POB(space)(# of box) and when you save it it gives you an auto-corrected address of PO Box (##) written out correctly.
Additionally, don't forget to submit your feedback to our product engineers. Your idea will be given an opportunity for evaluation. Here's how:
- Sign in to your QBO account and go to the Gear icon.
- Select Feedback under Profile.
- Enter your suggestion. Then, click Next.
I've also added the following articles for future reference:
Keep me updated in the comments if you have further questions about your address in W2s in QuickBooks Online. I'm just a reply away. Keep safe and have a good one.