Payment Amounts

To avoid incurring interest charges for underpaying your estimated taxes, your four installment payments must be paid timely and must total:

• 90 percent of the state income tax developed, as you are earning income, for the current year OR
• For tax year 2008: 120 percent of the previous year's state tax liability paid in four equal quarterly installments.
• For tax year 2009: 110 percent of the previous year's state tax liability paid in four equal quarterly installments.

Each installment payment must be at least 25 percent of your required total.

If you make your estimated payments online you may also schedule future payments.