To start fresh, you need to consider how long you've been using QuickBooks. Let me provide further details about this.
It depends on which level of QuickBooks Online subscription you have and how old your account is. If you are using QuickBooks Online Essentials or Plus and the account is less than 90 days old, you can purge all of the data.
If you are using QuickBooks Online Simple Start or the account is older than 90 days. You would need to cancel the account and create a new subscription.
Base on the situations above, if you wish to delete your company data, cancel your current account, and start a new company, the How to start over in QuickBooks article will guide you with the steps you need to take.
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