Portal can automatically create Payment entries in your QuickBooks Online account and assign them to your customer when you receive a payment through our Payment Processing integrations (Intuit Payments, Stripe, and Square).
In Portal, go to Settings > Integrations and click the three dot menu for QuickBooks Online integration. Then select "Settings" from that small menu. On the pop-up window, select "Payments" settings and you can toggle on this feature:
Here is a quick video introducing the new feature and explaining how it works: