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Guides · 2026

Medicare and ACA guides

The calculators give you the number. These guides explain the rule behind it, the deadline that matters, and the edge cases that change the answer.

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Written and maintained by Abdul SamadPunjab, Pakistan

  1. SSA 44 form IRMAA appealHow Form SSA-44 works, which life-changing events qualify, what proof to gather, and what to ask Social Security before you file.
  2. How to lower IRMAAThe practical levers for an IRMAA reduction, the deadlines that matter, and the moves that do not change the surcharge.
  3. Roth conversion IRMAAWhy a conversion can raise a Medicare premium two years later, how to measure the headroom, and what to confirm with a tax preparer.
  4. What income is used for marketplace subsidiesA plain walk through MAGI, household composition, the prior-year poverty guideline, and the 400% limit that still matters.
  5. Does IRMAA apply to married filing separatelyThe separate-filer IRMAA table, why the thresholds are lower, and how to check each spouse’s notice.
  6. HSA and Medicare 6 month ruleWhy contributions must stop months before Part A, how the six-month backdate works, and how to handle a contribution that went in too late.
  7. When does Medicare Part A backdateHow the six-month Part A backdate works, who it affects, and why the date can matter more than the enrollment form.
  8. 400 FPL subsidy cliff 2026The 400% poverty-line limit for premium tax credits, the dollar amounts by household size, and the status of the enhanced subsidies.
  9. Part D out of pocket cap 2026How the annual Part D cap works, which spending counts toward it, and why the premium and IRMAA stay separate.
  10. Family glitch fix explained 2026What changed, which premium is tested for the employee and for the family, and how to avoid the most common mistake.
  11. Medicare Part B premium increase 2026The standard premium, the dollar change from last year, and the reasons your own Part B amount can be higher.
  12. Medicare Part B deductible 2026The annual deductible, the coinsurance that follows, and the coverage choices that can change your out-of-pocket cost.
  13. Medicare Part A premium 2026The 40-quarter rule, the reduced and full premiums, and the work records that decide which one applies.
  14. Medicare Part D late enrollment penaltyHow the penalty is calculated, which coverage prevents it, and why waiting can cost more than the premium itself.
  15. Medicare initial enrollment periodThe seven-month window, the first-of-month rule, and the employer coverage that can change the timing.
  16. Medicare general enrollment periodWho the yearly window is for, when coverage begins, and the penalties that do not disappear.
  17. Medicare Part A late enrollment penaltyThe premium test, the twice-the-years rule, and the work record that decides whether the penalty applies.
  18. Medicare special enrollment period while workingThe employer size test, the eight-month window, and the coverage types that do not qualify.
  19. Medicare Part A 40 quarters ruleHow work quarters are earned, how the 40-quarter threshold works, and what to do if the record is short.
  20. Medicare and COBRAHow the two coverages coordinate, why COBRA is not current employment coverage, and the drug coverage trap.
  21. Medicare and retiree health coverageCoordination rules, the risk of delaying Part B, and the drug coverage notice that decides Part D.
  22. Medicare and VA benefitsHow the two systems fit together, the Part D creditable coverage issue, and the care choices veterans face.
  23. Medicare and FEHBThe coordination rules for federal retirees and active employees, the Part B timing, and the FEHB drug coverage notice.
  24. Medicare and TRICAREThe Part B requirement, the order of payment, and the drug coverage rules for military retirees.
  25. Medicare for people with disabilitiesThe SSDI waiting period, the exceptions, the enrollment window, and the work incentives that can affect coverage.
  26. Medicare and end stage renal diseaseThe ESRD eligibility path, the treatment-based start date, and the coordination with employer group coverage.
  27. Medicare and ALSThe waived waiting period, the enrollment window, and the equipment and drug coverage that matter after diagnosis.
  28. Medicare Part D formulary exceptionThe request process, the prescriber evidence, and the appeal steps when a plan denies coverage.
  29. Medicare Part D prior authorizationThe review process, the prescriber evidence, and the appeal steps when a drug needs advance approval.
  30. Medicare Part D pharmacy networkPreferred pharmacies, out-of-network fills, mail order, and the network checks that prevent a costly refill.
  31. ACA open enrollment dates 2026The federal window, the December deadline for a January start, and the state marketplaces that use different dates.
  32. ACA special enrollment periodThe qualifying events, the 60-day window, and the proof the marketplace may ask for.
  33. ACA cost sharing reductionThe Silver plan requirement, the income limits, and the out-of-pocket savings for eligible households.
  34. ACA Form 1095-AThe monthly figures, the Form 8962 reconciliation, and the common errors that delay a refund.
  35. ACA dependent coverage age 26The age limit, the marriage and job rules, and the coverage options when the young adult turns 26.

How these guides stay current

Every guide uses the same dated data layer as the calculators. When a premium, threshold, or poverty guideline changes, the guide changes with it. Each page lists its official sources and the date the figures were last checked.

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