Is there a way/format to import Time Sheet data into QBO? Don't want to use a third party app.

The importer feature in QBO is limited. There is also TSheet to sync with QBO directly. Afaik you will need a 3rd party importer tool.

https://transactionpro.grsm.io/qbo

https://partners.saasant.com/affiliate/idevaffiliate.php?id=5051_2

Just my 2 cents.

Good morning, @tom70.

I’m glad to offer my assistance with importing time sheet data. It just takes a few minutes to your get data into QuickBooks. Here are the simple steps to get you back to business.

1. In Timesheets.com, click Reports in the left menu.
2. Choose the appropriate link under the QuickBooks Online export section.
3. Select your export parameters and click the Export to QuickBooks Online button.
4. You’ll see a listing with all the timestamps that matches your criteria. Any items already exported won’t have a checkbox.
5. Click the button at the top of the page to send your data to QuickBooks Online.
6. Next, click the Previous Exports tab along to top of the export page to view your export status and other details. Once the export is complete, the exported data will be available.
7. If there was a problem with your export, the export will display that is has failed along with View and Retry icons.
   1. Choose the View icon to see export details including what data failed to import and why it failed (usually a mismatched item).
   2. Once the mismatch has been corrected, you may retry your import by clicking the Retry icon. Only data that was not imported the first time will import with the retry. Please read the notes below before retrying or deleting a failed import. 

Here is a couple of resources for the future: https://www.timesheets.com/support/article/quickbooks-online-import-instructions/

https://quickbooks.intuit.com/learn-support/en-us/help-articles/integrate-tsheets-and-quickbooks-onl...

Please know I’m only a post away if you need anything else. Have a wonderful rest of your week.