If you’ve been paying more than the standard premium amounts for Part B (outpatient care coverage) or Part D (prescription drugs) through so-called income-related monthly adjustment amounts, or IRMAAs, a sudden reduction in income may justify eliminating or reducing those surcharges .

Of Medicare’s 62 million beneficiaries, about 7% — 4.3 million people — pay IRMAAs, which kick in if your modified adjusted gross income is more than $87,000. For married couples filing joint tax returns, they start above $174,000.