📖 Guides
The documents and rules of work, money, and taxes, decoded in plain language — verifiable facts with official sources, never advice. Each guide ends at the calculator that does the actual math.
What MAGI Means for Medicare, Line by Line
Medicare's income surcharge is set by a figure called MAGI, and it is not the same MAGI used for Roth contributions or for the health-insurance marketplace. For IRMAA it is two lines from Form 1040 added together. Here is exactly which two, and what does not belong in the sum.
Updated 2026-08-03
Why Your Part B Premium Changed This Year
A Part B premium can move for three entirely separate reasons, and they are routinely mistaken for one another. The standard premium changed, or your income two years ago crossed a threshold, or a rule tied your increase to your Social Security raise. Here is how to tell which one happened.
Updated 2026-08-03
What Counts as Creditable Drug Coverage
The Part D late-enrollment penalty is charged for every month you went without creditable drug coverage. The word creditable has a specific meaning, and coverage that feels perfectly good can fail the test. Here is what the standard actually is and how to prove you met it.
Updated 2026-08-03
Why COBRA Does Not Protect You From the Part B Penalty
COBRA continues your employer health plan, so it feels like unbroken coverage. For Medicare's enrollment rules it is not treated as coverage from current employment, which means it does not open a penalty-free special enrollment period. This is one of the most expensive misunderstandings in the whole system.
Updated 2026-08-03
How Delayed Retirement Credits Actually Accrue
Waiting past full retirement age raises a Social Security benefit by a fixed percentage each year, but the increase is earned month by month, stops entirely at 70, and does not always show up in the payment you expect. Here is the mechanism, including the January quirk nobody mentions.
Updated 2026-08-03
What the Earnings Test Withholds, and Why It Comes Back
Work while claiming Social Security before full retirement age and some benefits are withheld. Almost every description of this calls it a penalty. It is closer to a deferral: at full retirement age the benefit is recalculated upward to credit the withheld months. Both halves of that are worth understanding.
Updated 2026-08-03
How a Spousal Benefit Is Calculated
A spousal benefit is worth up to half of the other person's full-retirement-age amount, and several things people expect to increase it do not. It is not enlarged by the worker's delay, it does not add to the worker's own check, and claiming it early reduces it permanently.
Updated 2026-08-03
Why More of a Benefit Is Taxable After a Spouse Dies
The thresholds that decide how much Social Security is taxable are far lower for a single filer than for a couple, and they were never indexed to inflation. A surviving spouse can therefore find that a smaller total income is taxed more heavily. Here is the mechanism.
Updated 2026-08-03
What the Medicaid Look-Back Actually Examines
Applying for Medicaid long-term care triggers a review of financial records going back five years in most states. It is not a rule against spending money. It is a rule against giving assets away for less than they were worth, and the difference between those two is where households get caught.
Updated 2026-08-03
Who Qualifies for VA Aid and Attendance
Aid and Attendance is an increased pension for wartime veterans and surviving spouses who need help with daily activities. Four separate tests have to be met, and the one that decides most cases is not the medical one — it is how unreimbursed medical expenses reduce countable income.
Updated 2026-08-03