Thanks for reaching out here. It's important that employee's accrued vacation is accurate in QuickBooks Online Payroll. I'd be glad to provide some insight here!
There are four ways accrued vacation can be applied, with the option to calculate as a percentage or by hours earned. There may be times when adjustments need to be made for an employee. However, it's important that each employee is set up accurately, when adding them to payroll. If an adjustment is needed, you can follow the steps here. Should you require additional assistance, please don't hesitate to contact us outside of Community. It would be our pleasure to work with you directly, and ensure your time off policies are set up accurately in QuickBooks Online Payroll, as soon as possible!
Schedule a Callback or start a Chat: click (?) Help in the upper right in QuickBooks Online > enter "Contact support" > hit Contact Us > provide a brief summary of your situation > hit Let's Talk > choose Get a callback or Start a Chat.