Why would I have an underpayment penalty for state taxes if I am owed a refund in Get your taxes done using TurboTax
Last year I had a change in status to 'Retired'. I don't think I should owe a penalty for just $362 of underpayment? in Retirement tax questions
California Form 5805 (Underpayment Penalty) - bug in itemized deductions when using annualized income method in Get your taxes done using TurboTax
California Form 5805 (Underpayment Penalty) uses incorrect interest rates in Get your taxes done using TurboTax
Payment of estimated taxes in the state of Indiana assessing under payment penalty in Get your taxes done using TurboTax