Proposed Provision: F10. Expand the tax on net investment income (NII) as defined in the Affordable Care Act (ACA) to cover earnings from active S corporation holders and active limited partners. Apply a 12.4-percent tax on this expanded definition of NII, payable to the OASI and DI Trust Funds with specified thresholds, effective for 2025 and later. The unindexed thresholds for this provision are $400,000 for a single filer and $500,000 for a married couple filing jointly. The NII tax would apply to the lesser of NII and the excess of modified adjusted income (MAGI) above the unindexed thresholds.

OASDI Trust Fund Ratio
(assets as a percentage of annual expenditures)

Year Current Law Provision
2024188188
2025171171
2026152161
2027134153
2028117144
2029101136
203084129
203168121
203253114
203337108
203422101
2035795
2036-988
2037-2681
2038-4374
2039-6066
2040-7858
2041-9650
2042-11542
2043-13533
2044-15425
2045-17416
2046-1947
2047-215-2
2048-235-11
2049-256-21
2050-277-30
2051-299-40
2052-320-50
2053-342-60
2054-364-70
2055-386-81
2056-409-92
2057-431-103
2058-455-114
2059-478-126
2060-502-139
2061-527-151
2062-553-164
2063-579-178
2064-605-192
2065-632-206
2066-660-220
2067-688-235
2068-716-250
2069-745-266
2070-774-281
2071-803-297
2072-834-314
2073-864-331
2074-895-348
2075-927-365
2076-960-383
2077-993-402
2078-1027-420
2079-1062-439
2080-1098-459
2081-1134-479
2082-1172-499
2083-1209-519
2084-1248-540
2085-1287-561
2086-1327-582
2087-1368-603
2088-1409-624
2089-1450-645
2090-1491-666
2091-1532-686
2092-1573-707
2093-1612-726
2094-1651-746
2095-1689-765
2096-1727-784
2097-1764-802
2098-1801-821
2099-1838-839
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