How do I change my State Unemployment limit?

I think you are right! I was thinking that QB was calculating the percentage amounts on SUI for me, but I realize that I have been doing it myself!

Hello there, @Lwood.

Thanks for getting back to us. Allow me to address your concern, so let me get this straightened out.

QuickBooks Online will stop calculating your taxes once you cancelled your payroll subscription. Please know that you're always welcome to re-activate your payroll service anytime. To do this, let me walk you through the steps for your reference: 

1. Click the Gear Icon.
2. Go to Account and Settings. 
3. Select Billing and Subscription. 
4. On the Payroll subscription status, click Subscribe Now.
5. Provide the payment information. 
6. Click Subscribe. 

If you need further assistance with the steps, I encourage you to contact our QuickBooks Online Support Team. They have the tools to pull up your account and activate your payroll subscription.

Don't hesitate to click the Reply button below if you have follow up questions. I'm always here to help you out. 

If you stop using the "provided tax item" and make your own Payroll Item for this, as a Company Contribution, then it will also allow you to put in the rate and set the limit; it will Compute your own items and it will manage against the Limit. Example:

Everyone is subject to the FUTA item up to $42. Don't use the FUTA item; make your own.

You should be able to manually change that in the Payroll Items List (assuming your 2015 version has that).