I just bought a new cargo trailer for my business, can and where do I write it off on my taxes

Yes, you would want to include it in the "Business Assets" section of TurboTax.

To do so:

1. Click the Business tab at the top
2. Click Continue, then I'll choose what I work on
3. In the "Business Income and Expenses" section, next to "Profit or Loss from Business" click Start or Update/Revisit
   --If you haven't input your business information already, you will be prompted to at this point
   --Or, if you land on the "Here's the business info we have so far" page, click Edit next to the Business you purchased the trailer for
4. Scroll down to the "Business Assets" section. Next to "Assets Being Depreciated" click Start or Update/Revisit
5. Answer Yes to the first question, then follow the on-screen prompts to enter information about your trailer purchase