Hi there, cynde.
Thanks for taking the time to visit the Community. I'd be glad to provide some information on your question about changing the closing date of a reconcile.
Once the reconcile is completed for a specific month, the ending or closing date can be changed by undoing the reconcile and then redoing it. This can be done by accessing the register and clicking the R status for transactions in that month until the field is blank. This will "unreconcile" the items and then you can start once more and change the date. I would speak with your accountant about this to make sure this would work with the way your books are set up. This article offers additional information on reconciling accounts in QuickBooks Online: https://quickbooks.intuit.com/community/Banking-and-bank-feeds/Reconcile-hub/m-p/186429.
At this time, there isn't a way to directly change the close date for the reconcile once it has been completed. I'll be sure to pass your feedback along to the Product Development Team to let them know you'd like to have this ability. You can keep up with product updates and feature releases by viewing the QuickBooks Blog: https://quickbooks.intuit.com/blog/.
I wish you and your business continued success. Please feel free to leave a comment below if you have any other questions.
