If you are a business owner or accountant, you may need to know how to apply unapplied payments in QuickBooks in order to properly manage your finances. Unapplied payments are payments that have been received but not yet allocated to a specific invoice or customer account. This can lead to discrepancies in your financial records, so it is important to know how to apply unapplied payments in QuickBooks in order to keep your books accurate and up-to-date.