2025 Session Last amended: 2019 session

§ 289A.25 — Payment of Estimated Tax by Individuals, Trusts, S Corporations, or Partnerships

Plain-Language Summary

Individuals, trusts, S corporations, and partnerships must make estimated tax payments during the year if they expect to owe more than a certain amount. Payments are usually due in four installments on April 15, June 15, September 15, and January 15. The payments must be based on either the current year's expected tax or the prior year's actual tax.

Practical Notes
You can avoid estimated tax penalties by paying at least 100% of last year’s tax liability in equal quarterly installments. Self-employed individuals and those with significant non-wage income should pay close attention to these requirements. Farmers and fishers may have different payment schedules.