Overview
- Tax advisers and the National Taxpayer Advocate on Monday pressed taxpayers to mail Form 843 protective claims by July 10, 2026.
- The push follows Kwong v. United States, a November ruling that said penalties and interest from Jan. 20, 2020 through July 10, 2023 were improper.
- The Department of Justice is expected to appeal, which means refunds are not guaranteed.
- Form 843 cannot be filed online, so taxpayers should check IRS account transcripts for charges in that window and send claims by certified mail.
- IRS data show 14.2 million estimated‑tax and 18.6 million failure‑to‑pay penalties in fiscal 2023, pointing to many potential claims and sizable refunds for those who paid penalties.