Who Does Not Have To Pay Estimated Tax
General RuleExcess Social Security or Railroad Retirement Tax Withholding
Worksheet for Nonrailroad EmployeesFiguring Your Required Annual Payment (Part I)
Short Method for Figuring the Penalty (Part III)
Regular Method for Figuring the Penalty (Part IV)
Figuring Your Underpayment (Part IV, Section A)Annualized Income Installment Method (Schedule AI)