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A Part D Late Enrollment Penalty Is Permanent. The Amount It Costs Is Not.

Two Medicare late enrollment penalties are described the same way in almost every summary: sign up late, pay more for life. They are built on different units. The Part D drug penalty counts single months and multiplies them by a premium figure that the Centers for Medicare & Medicaid Services resets every year. The Part B medical penalty counts only completed twelve-month periods and multiplies them by a much larger premium. For 2026 the two base figures are $38.99 and $202.90. What follows is what each formula does with the same gap, and why one of them costs a different amount every January while the gap behind it does not change. What Starts the Part D Count The condition is not lateness in general. The Medicare drug coverage cost page states: “You may owe a late enrollment penalty if at any time after your Initial Enrollment Period is over, there’s a period of 63 or more days in a row when you don’t have Medicare drug coverage or other creditable prescriptio...

About TheWalletCompass

TheWalletCompass explains how the rules of U.S. personal finance actually calculate. Not what you should do with your money — what the statute, the schedule, or the agency formula says, and where the boundaries fall.

Most personal finance writing gives advice. This site does something narrower and, in a specific situation, more useful: it reads the rule. A contribution limit, a benefit payment date, a phase-out range, a penalty exception, an eligibility threshold — these are published numbers with published conditions attached. When you need to know whether you are above or below a line, general advice does not help. The line does.

What this site covers

  • Retirement account mechanics — contribution and deferral limits, catch-up rules, income phase-outs, required minimum distributions, early-withdrawal exceptions
  • Social Security — how benefits are computed, the payment calendar, earnings tests, spousal and survivor conditions, the taxation thresholds
  • Tax thresholds — bracket boundaries, standard deduction amounts, credit phase-outs, filing thresholds, and how inflation adjustment moves them each year
  • Health and insurance boundaries — HSA and FSA limits, Medicare enrollment windows and penalties, marketplace subsidy cliffs
  • Debt and credit rules — student loan repayment formulas, credit reporting timelines, and the consumer protections that attach to each

What this site does not cover: which fund to buy, which insurer to use, whether a given move is right for you. Those are decisions, and decisions depend on facts about you that a web page does not have.

Where the numbers come from

Every figure on this site is traceable to a primary source. The sources used are limited to:

Other blogs and news articles are not used as sources. Where a secondary write-up is the only place a figure appears, the figure is left out rather than repeated.

Why every figure carries a year

Personal finance numbers expire. Contribution limits are indexed annually. Standard deduction amounts change with inflation. Medicare premiums are re-announced each fall. A page that states a limit without stating the year it applies to is wrong the moment the year turns, and the reader has no way to tell.

So every article on this site states which tax year, benefit year, or plan year a figure belongs to, and closes with a Numbers to Re-check table listing the values that will move and the agency that will publish the update. The intent is that an article can be re-verified by the reader, not merely trusted.

Where the framing breaks

Each article also includes a Where This Doesn't Apply section. Federal rules have carve-outs: state law overrides in community property states, government pension offsets change Social Security math, church and governmental plans follow different sections of the code, and many thresholds turn on filing status rather than income alone. An explanation that omits its own exceptions is a trap for whoever falls into one. Those conditions are stated rather than buried.

Who writes it

TheWalletCompass is written and maintained by M. Kim, an independent writer and developer. The site is independently operated and is not affiliated with, endorsed by, or sponsored by any government agency, financial institution, insurer, or news organization. No article is sponsored, and no product placement is accepted.

What this site is not

This site publishes general information about published rules. It is not tax advice, legal advice, insurance advice, or investment advice, and reading it does not create a professional relationship of any kind. Individual circumstances change outcomes, and the judgments that depend on those circumstances belong to a licensed professional — a CPA or enrolled agent for tax, an attorney for legal questions, a licensed agent for insurance, and a fiduciary adviser for investment decisions. For questions about your own benefit record or account, contact the administering agency directly.

Corrections

If a figure here is wrong or out of date, the correct response is to fix it. Corrections are welcome and are made to the article itself rather than appended elsewhere. Reports that identify the specific figure and the source that contradicts it can be acted on immediately.

Get in touch

Questions about a figure, correction reports, and topic suggestions are all welcome through the Contact page. Requests for personalized advice cannot be answered, for the reasons stated above.

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