Part 2/8:
Beginning in 1984, the concept of "provisional income" was introduced, establishing thresholds for individuals beyond which a portion of their benefits would be taxed. Initially set at $25,000 for singles and $32,000 for married couples, these amounts have remained static, failing to account for inflation. This oversight has resulted in a broader taxable base over time; as inflation has risen, so too has the number of retirees affected by these taxes.