Welcome to the Community space, @jrome11. I have details on customizing and printing checks in QuickBooks Online (QBO) and their assigned check number.
Please know that in QBO, you can only customize sales forms such as invoices, estimates, and sales receipts. Also, the option to personalize checks to fit your preferences when printing them out isn't an option. The assigned check number will not be visible once printed.
To get around this, consider ordering compatible checks from Intuit. You'll then utilize the check number assigned and enter it into your Checks in your company file. Refer to this page for more details: Order checks, tax forms, and other supplies.
On top of that, I recommend visiting this article to help manage checks, bills, and expenses in QBO: Learn the difference between bills, checks, and expenses in QuickBooks Online.
I'd also like to share that our QuickBooks Live Expert Assisted is now available to provide tips in managing company expenses or handling checks in the program. You can check them out anytime for more details.
I encourage you to use the comment section below so I can continue to provide information that can help you resolve QuickBooks-related inquiries. I'm always ready to extend a helping hand as soon as possible. Keep safe.
