I am reconciling the June account, and it will not show me May's transactions. I need to mark off a check written in May. How do I expand the check register?

I'll help you expand your QuickBooks register so you can mark off a check, @tlc3453. 

Expanding the register page is just a few clicks, and happy to share the steps to achieve your task. 

Do the following: 

1. Go to the Chart of Accounts by clicking the Accounting tab. 
2. Select the account you want to reconcile. 
3. Click the small drop-down arrow beside the funnel icon. 
4. Pick Check in the Transaction Type and 
5. Filter the Date, Payee, and Reconcile Status. 
6. Hit Apply. 
7. Click the hamburger icon on the upper left corner to see the data on the fullscreen. 
8. Select the small gear icon if you want to add or eliminate columns. 
9. Locate the check and mark it off. 

If you didn't see it, I'd recommend checking your vendor Transactions List and verify if the check account used is correct. If you still didn't see it, run the Audit Log report to investigate this further.

Once everything is okay, you may now reconcile your account. Click this link for complete steps: Reconcile an account in QuickBooks Online.

In addition, see the following articles on how to print reconciliation reports and troubleshoot accounts that you reconciled in the past:

• Fix issues for invoices you've reconciled in the past in QuickBooks Online.
• How do I view, print, or export a reconciliation report?

Let me know if you need clarification or if there's anything else I can do for you. I'll be here on standby, and help is a click away. Take care.