DE 4Employee's Withholding Allowance CertificateThe Employee's Withholding Allowance Certificate is a form used by employees in the state of California to specify the number of allowances they wish to claim when calculating their state income tax withholding. By claiming allowances, employees can reduce the amount of tax withheld from their paychecks. The form allows employees to claim allowances based on factors such as their marital status, the number of dependents they have, and whether they are eligible for any tax credits. This information is used by the employer to determine the appropriate amount of tax to withhold from the employee's pay.