Common questions about Iowa Estimated Tax in Lacerte

Use the Iowa Adjustments section of Screen 7.1, 2026 Estimates (1040-ES), to adjust amounts for the estimated tax calculation.

For information on applying the One Big Beautiful Act (OB3) provisions to tax year 2024 estimates see here, check out our Tax topics page on Estimated Tax payments where you'll find answers to the most commonly asked questions.

Disaster area tax relief available:

Filing deadlines and estimated tax due dates may be extended for taxpayers in parts of Alaska, Hawaii, Louisiana, Montana, Georgia, Mississippi and Washington. See here for more details.

Related articles:

• Entering estimated tax on a multi-state individual return
• Using the E-file Estimated Payment Wizard