Can my client cancel their payroll subscription until the end of the year and then activate subscription to do T4's?

Hello stopattheoffice,

Welcome to the QuickBooks Community! QuickBooks is a versatile program that enables you to get your work done faster. I'll be happy to point you in the right direction so you can achieve your QuickBooks goals. 

If your client decides to cancel your subscription, it's important to note that your data will be available for Read-Only access for 1 year and after that, the data gets deleted. This gives your client an ample amount of time to cancel and re-activate the subscription with all their data on the account. However, before you cancel, we'd like the chance to find a solution that works for you. Our team is ready to review your account and discuss your options. You can reach us for free at 1-800-315-5902.

Let me know if this info helps. I'll be here in case you need further assistance. Otherwise, I wish you a great rest of the week!