We shortpaid a monthly loan payment by $50.00. I've come to the end of my reconciliation and I'm over $50.00. Do I make a journal entry for this? If so, how do I do it.

I'm here to help ensure your reconciliation is balanced, @svp2. 

When you reconcile your QuickBooks transactions, we always refer to the actual bank statement to ensure that everything is recorded properly in QuickBooks, and match it with your real-life bank transactions.

Since you've verified that you've paid short of your monthly loan payments in QuickBooks, all you need to do is to edit your vendor payment based on the $50 shortage of your monthly loan. 

Here's how:

1. Go to the Expenses tab on the left menu. 
2. Ensure you're in the expenses portion of the page. 
3. Locate and double-click on the bill payment. 
4. Edit the amount of the bill as needed. 
5. Click Save and close when done. 

After that, ensure that the amount matches with your connected bank account. Check out this article for additional insights: Categorize and match online bank transactions in QuickBooks Online.

Then, continue your reconciliation. Here are some related articles that will surely walk you through the process towards the end of your reconciliation:

• Fix issues at the end of a reconciliation in QuickBooks Online
• Learn the reconcile workflow in QuickBooks

Keep in touch if you still need additional help with your reconciliation. I'm always around to back you up.