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Index/Organizations/Northwestern Mutual

Northwestern Mutual

Company

Fact-Checks

2 results
Dec 2, 2025
Most Viewed

How does nontaxable Social Security affect MAGI calculations for Medicare Part B and Part D premiums?

Nontaxable (untaxed) Social Security benefits are generally not included in the MAGI that the Social Security Administration uses to decide whether you owe an IRMAA surcharge for Medicare Part B and P...

Dec 16, 2025
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Do tax-exempt interest and municipal bond income affect IRMAA MAGI calculations in 2025?

Tax-exempt interest — including municipal bond income reported on Form 1040 line 2a — is added back to Adjusted Gross Income (AGI) when the Social Security Administration calculates the MAGI that trig...