Online Tax Center Federal Tax Refund: You can track your federal tax refund through this secure web site. Click here. Indiana Tax Refund: Check the status of your Indiana Refund. Click here. Social Security Administration: SSA official website. Click here. Employer Payroll Withholding Forms: Federal Form W-4 Employer Eligibility Verification Form I-9 Indiana Payroll Withholding Form WH-4 Indiana New Hire Reporting Form