Hi there, @nmaguire.
Thanks for taking the time to reached out to us. Allow me to address your concern, so let me get this straightened out.
As of now, QuickBooks Online (QBO) doesn't have an option to set up an automatically place a decimal point when entering dollar amounts. I can see how this feature would be helpful, you may want to submit this idea to our product developers so they'll be able to include this in their next product update.
Here's how you can send feedback:
- Click the Gear Icon.
- Select Feedback.
- Click Next and choose Feedback under Category option.
- Select Save.
Please don’t hesitate to leave a comment below if you have any other questions. Have a good one.