Hi there, Melissa02575.

I'm here to help in paying your vendor via direct deposit.

If you want to increase your direct deposit security limit in QuickBooks when paying your vendor, you can easily submit an online request. However, you might be required to provide additional documentation like bank statements, which can be uploaded to the request form. 

Usually, the requests are processed within 2 business days, and the results will be emailed to you. In some cases, you may also need to provide more information such as bank statements this is for us to know your average historical balance to make sure your account is sufficiently funded for the amounts you're requesting.

For more details about direct deposit limits, you can visit this article: Get help if you're over a direct deposit limit in QuickBooks Payroll.

For your future reference, you can always check this article to guide you in changing payroll bank accounts for direct deposit: Change your payroll bank account.

Feel free to hit that Reply button if you have additional questions when processing direct deposit. Have a great day ahead.