There is a payment that is not reconciling right and I'm not sure why

Hello, lou5ise.

I'll share a bunch of solutions to help you reconcile the payment. 

You'll want to check and compare your ending balances in the bank and the one entered in QuickBooks. An incorrect ending balance is likely the reason why the payment isn't reconciling. 

In this case, edit the ending balance on the reconciliation page to correct it: 

1. On the Reconciliation screen, click the Edit info button.
2. Under the Ending Balance box, edit the amount according to your bank statement.
3. Click Save. 

You might also want to double-check your bank statement to see if the payment is included for the period. 

Other solutions for handling reconciliation issues can be found here: Fix issues at the end of a reconciliation in QuickBooks Online. 

If you need more help with the reconciliation, this article can guide you: Reconcile an account in QuickBooks Online.

Ready to work on the next period's transaction? If you use the Online Banking feature, this article can guide you in managing your bank transactions: Categorize and match online bank transactions in QuickBooks Online.

I'm happy to help you out again in managing your payments and other transactions. Just say the word below and I'll help you out. Don't forget to include other concerns regarding QuickBooks Online.