Let me address your concern, Sujith1.
Once an account is canceled, the data is available in read-only access for a year from the cancelation date. It means that you can still hold your account for a year without making or paying the subscription. During this time, you're unable to create any transactions. However, you can still open the reports.
For more information, you can refer to this article: What happens to my QuickBooks Online data after I cancel?.
If you have additional questions, please don't hesitate to drop a comment below. Take care!