I need assistance with changing my accounting year end from 30 June to 31 Dec

Hi victor-numidatec,

It's great to have you connect with is here. QuickBooks offers the flexibility you need to streamline your work using the powerful features offered in the program. I'll be happy to point you in the right direction so you can get back to doing what you enjoy. 

Here's how you can change the accounting year in QuickBooks:

1. Click on the Gear icon.
2. Choose Account and settings.
3. Click the Advanced tab.
4. Click the Accounting section to edit.
5. Choose from the First month of fiscal year drop-down menu and make the necessary adjustments. 
6. Click Save.

I encourage you to try this out and let me know how you make out. I'll be a message away in case you need anything else.