In a recent article, “Reform the Grantor Trust Rules” by Jay A. Soled, 50 ACTEC Law Journal 249 (2025), he argues that Congress should reform the Grantor Trust rules to generate more tax revenue. According to him, when Congress set the trust income tax bracket at the highest marginal level in 1986, that largely eliminated the original income shifting purpose behind the Grantor Trust rules. In his view, Congress should have a narrower definition of what constitutes a Grantor Trust, and Congress should look to how it currently classifies foreign trusts as Grantor Trusts as a guide.
Interesting argument if you believe Congress does not tax enough.