Currently, the Receipts tab is not yet available in QuickBooks Online (QBO) ZA version. I see the importance of having this feature as this would make your work easier. Rest assured, our engineering team is working on having this feature available in your region.
In the meantime, you can consider looking for third-party apps that works well with QBO. This way, you'll have the option to capture receipts in QBO. Just go to the Apps menu and then search for an from there. Let me guide you how:
Go to the Apps menu from the left panel.
Enter Receipt Capture in the search box.
Select the app to open its profile. View other apps by selecting them.
Choose the right app for your business.
Then simply click Get app now.
On the other hand, you can also check our Apps store and navigate through apps by opening each profile. Once you've chosen the right app for your business, click Get app now.
Also, while we don't have a specific timeline as to when this feature will be available in your region. I recommend checking our QuickBooks Resource Center page from time to time. There, you'll be updated of the latest news and happenings in QBO.