Hey there thundernlightni,
It's always a pleasure to see new faces in the Community, Welcome! Thanks for reaching out to us here. QuickBooks Online is a great tool able to help keep your books balanced. I would be happy to provide some information.
At this time, the option to pay sales tax through QuickBooks Online, isn't available. Although you can Record your payments in QuickBooks, you'll need to make the payment outside of your QuickBooks account. Here is a helpful guide for your reference.
I can see how being able to make GST payments from your QuickBooks can be beneficial for you and your company. I recommend leaving feedback by heading to the Gear icon and selecting the Feedback option. These comments are viewed and considered by our developers as they create new features for QuickBooks.
If you have any other questions, feel free to reach back to us here.