Example: For 2024, a REIT reports real estate investment trust taxable income (REITTI) of $100, a dividends paid deduction of $100 and thus incurs no tax liability at the corporate level. In 2026, the Tax Court issues a determination that the REIT’s RETTI for 2024 was actually $120. The REIT pays a $20 dividend and files a claim for a dividend deficiency deduction within the required period, and is allowed that deduction for 2024. The REIT therefore has no undistributed REITTI for 2024 and meets its dividend distribution requirement. However, the REIT is still considered to have underreported by $20 and the time for paying its 2024 taxes (including extensions) has expired. The REIT is liable for interest on the $20 under IRC Section 6601 despite the fact that it was granted the dividend deficiency deduction.4
The REIT shareholder is taxed on the deficiency dividend in the year that the shareholder actually receives the dividend payment (even though the deficiency dividend will, by definition, relate to an earlier tax year).5