Welcome to the Community and thanks for contacting us here. QuickBooks is a flexible program that helps you to manage your accounting with ease. I'll be glad to share more information on reconciling and preparing HST returns so you're on the right track with your work.
It is generally a good practice to reconcile your bank accounts before generating an HST return in QuickBooks Online. Reconciling ensures that your financial records match your bank statements, which helps in accurately reporting your HST liabilities and credits.