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...
Two borrowers can hold the same federal balance, at the same interest rate, and owe monthly amounts that differ by more than $200. Nothing about the loan explains the gap. The plan formula does, and in 2026 the set of formulas changed more than it had in a decade.
This walks through what each surviving plan does with the same numbers: a $32,000 Direct Loan balance carrying the 6.53% fixed rate that applied to undergraduate loans first disbursed between July 1, 2024 and June 30, 2025, held by a single filer with no dependents and an adjusted gross income of $48,000. Every figure below comes from the Department of Education, the eCFR, the Department of Health and Human Services, or the IRS, and each is named in the text.
The menu as of mid-2026
The Department of Education announced that the SAVE Plan ended under a court-approved settlement with the State of Missouri, and that roughly 7.5 million enrolled borrowers would be moved off it. Servicers began issuing formal exit notices on July 1, 2026. The Department's guidance gives borrowers 90 days from the servicer's notice to choose a legal plan; borrowers who do not choose are placed automatically into the Standard Repayment Plan or the new Tiered Standard Plan.
What remains splits into two groups.
Fixed-payment plans, governed by 34 CFR 685.208:
- Standard. Full repayment within ten years of the date the loan entered repayment. Payments are at least $50 a month, except that a final payment may be smaller.
- Graduated. Payments at two or more levels, rising over time. For borrowers who entered repayment on or after July 1, 2006, the rule in 34 CFR 685.208 is that no single payment may be more than three times greater than any other payment; those payments may be less than $50 a month.
- Extended. Requires more than $30,000 in outstanding Direct Loans. Term runs up to 25 years, minimum $50 a month.
- Tiered Standard, available July 1, 2026. The Department's final-rule fact sheet sets the term by balance: 10 years below $25,000; 15 years for $25,000 to $49,999; 20 years for $50,000 to $99,999; 25 years at $100,000 or more.
Income-driven plans, governed by 34 CFR 685.209 and, for the newest one, by the 2025 reconciliation law:
- IBR. 15% of discretionary income for borrowers whose first loans predate July 1, 2014, and 10% for borrowers on or after that date. Discretionary income is AGI above 150% of the federal poverty guideline. The payment is capped at the 10-year Standard figure. Forgiveness lands at 20 or 25 years depending on the borrower's loan dates.
- PAYE. 10% of the same 150%-based discretionary income, forgiveness after 240 monthly payments over at least 20 years. Restricted to borrowers who took a qualifying disbursement on or after October 1, 2011.
- ICR. The lesser of 20% of discretionary income — here measured against 100% of the poverty guideline, not 150% — or what a fixed 12-year schedule would cost, adjusted by an income percentage factor the Department publishes annually. Forgiveness after 300 payments over at least 25 years.
- RAP, the Repayment Assistance Plan, with applications opening July 1, 2026. Payment is a percentage of AGI set by bracket, reduced by $50 per dependent, floored at $10 a month. Forgiveness after 360 on-time monthly payments.
The Department's fact sheet sets July 1, 2028 as the date by which borrowers still sitting on the phased-out income-contingent plans must move to RAP, the Tiered Standard Plan, or IBR.
Four inputs, one number
Only four things enter a federal payment calculation, and the plans disagree about which of the four matter.
The same balance, five answers
The Department of Health and Human Services published the 2026 poverty guidelines in the Federal Register on January 15, 2026, effective January 13, 2026. For the 48 contiguous states and the District of Columbia the guideline is $15,960 for a household of one, $21,640 for two, $27,320 for three, $33,000 for four, and $5,680 for each additional person. Alaska starts at $19,950 and Hawaii at $18,360 for a household of one.
For a single filer, 150% of $15,960 is $23,940. That is the income the IDR formulas shield. Against an AGI of $48,000, discretionary income under IBR and PAYE is $24,060. Under ICR, which shields only 100% of the guideline, it is $32,040.
| Plan | Formula applied to this borrower | Monthly payment |
|---|---|---|
| Standard, 10 years | $32,000 amortized at 6.53% over 120 months | $364 |
| ICR | 20% of $32,040 is $534; the 12-year fixed figure is about $321, and ICR takes the lesser | about $321 |
| Tiered Standard | Balance falls in the $25,000–$49,999 band, so 180 months at 6.53% | $279 |
| IBR, post-2014 borrower | 10% of $24,060 is $2,406 a year | $200.50 |
| RAP | AGI falls in the $40,001–$50,000 band, so 4% of $48,000 is $1,920 a year | $160 |
A borrower whose first loans predate July 1, 2014 runs IBR at 15% instead: $24,060 × 0.15 is $3,609 a year, or $300.75 a month. Same income, same balance, same plan name, and a payment 50% higher because of a disbursement date.
The ranking flips once there is a household
IBR and RAP handle family size through different machinery, and the difference is large enough to reverse which plan is cheaper.
IBR adjusts the shielded floor. Each additional household member adds $5,680 to the 2026 poverty guideline, and 150% of that is $8,520 of income moved out of reach of the formula. At the 10% rate, that is $852 a year, or $71 a month, of payment reduction per person. At the 15% rate it is $1,278 a year, or $106.50 a month.
RAP does not use the poverty guideline at all. It subtracts a flat $50 per dependent claimed on the federal return, with the payment never falling below $10 a month.
Consider a married couple filing jointly with two children, a combined AGI of $86,000, and a $61,000 balance. The household of four carries a 2026 guideline of $33,000, so 150% is $49,500 and discretionary income is $36,500.
- IBR at 10%: $3,650 a year, or $304.17 a month.
- RAP: AGI lands in the $80,001–$90,000 band, so 8% of $86,000 is $6,880 a year, or $573.33 a month, less $100 for two dependents. That is $473.33.
RAP was the cheaper plan for the single filer by $40 a month and is the more expensive one here by $169. The reversal is structural, not a quirk of the numbers chosen: RAP charges a percentage of every dollar of AGI, while IBR charges a percentage only of the dollars above a floor that grows with the household.
RAP's brackets are steps, not a slope
The Department's servicer materials publish the RAP schedule as eleven bands. A borrower with AGI at or below $10,000 owes $120 for the year. From $10,001 to $20,000 the annual amount is 1% of AGI; each successive $10,000 band adds a percentage point, and above $100,000 the rate is 10% of AGI. The annual figure is divided by twelve, then reduced by $50 for each dependent.
Because each band applies its rate to the whole of AGI rather than to the slice inside the band, the schedule steps rather than slopes. The steps are visible in the chart and they are not small.
- AGI of $30,000 draws 2%: $600 a year, or $50 a month.
- AGI of $30,001 draws 3%: $900.03 a year, or $75 a month.
- AGI of $50,000 draws 4%: $2,000 a year, or $166.67 a month.
- AGI of $50,001 draws 5%: $2,500.05 a year, or $208.34 a month.
One dollar of additional income raises the required payment by $25 a month at the first boundary and by $41.67 at the second. IBR contains no such boundary. Because it charges 10% of every dollar above the shielded floor, an extra $1,000 of AGI raises an IBR payment by $100 a year — $8.33 a month — at any point on the curve.
The input nobody chooses
Federal Student Aid sets the fixed rate on Direct Loans each spring from the high yield of the 10-year Treasury note auctioned before June 1, plus a statutory add-on. Borrowers who finished school across different years therefore carry different rates on identical debt.
The 2026–27 rates were set from a 10-year Treasury high yield of 4.468%: 6.52% for undergraduate Direct Subsidized and Unsubsidized Loans, 8.07% for graduate and professional Direct Unsubsidized Loans, and 9.07% for Direct PLUS Loans. A graduate borrower and an undergraduate borrower with identical balances face a 1.55-point spread before any plan is chosen.
One rate change is available on request rather than by accident. The Department announced a 1 percentage point interest rate reduction for borrowers enrolled in automatic payments, applying to Federal Direct Loans originated after July 1, 2012, running July 1, 2026 through June 30, 2028, with enrollment required by September 30, 2026. On a $32,000 balance, one point is $320 a year of interest not charged, roughly $640 across the two-year window.
What the monthly figure conceals
Three consequences sit outside the payment amount and can matter more than it does.
Negative amortization. A $32,000 balance at 6.53% accrues $2,089.60 a year, or $174.13 a month. The RAP payment of $160 in the single-filer example is below that. Under older income-driven plans the shortfall would capitalize. Under RAP, the Department states that unpaid interest remaining after an on-time payment is subsidized, so the balance does not grow on that account.
The principal match. RAP also provides that when a full, on-time payment does not reduce principal by at least $50, the Secretary makes a matching principal payment to bring the month's principal reduction to $50, and the match cannot exceed $50. In the example above the $160 payment retires no principal at all, so the match supplies the full $50. The IBR payment of $200.50 covers the $174.13 of interest and puts $26.37 against principal, with no match available. The larger payment does less to the balance that month.
Tax. The Taxpayer Advocate Service states that the American Rescue Plan Act exclusion applied to student loan debt forgiven after December 31, 2021 and on or before December 31, 2025, and that a federal balance forgiven under an income-driven plan in 2026 or later is generally treated as taxable income. Public Service Loan Forgiveness, Teacher Loan Forgiveness, and discharges for death or total and permanent disability do not create that liability. The Department's final rule provides that on-time RAP payments count as qualifying payments for PSLF, and the PSLF final regulations take effect July 1, 2026.
Dates already fixed in the calendar
- July 1, 2026. RAP and the Tiered Standard Plan open. PSLF final regulations take effect. New annual and aggregate borrowing limits apply: $20,500 a year and $100,000 aggregate for graduate students, $50,000 and $200,000 for professional students, $20,000 a year and $65,000 per dependent for Parent PLUS, and a $257,500 lifetime aggregate cap.
- September 30, 2026. Enrollment deadline for the 1-point autopay interest reduction.
- July 1, 2027. Economic hardship and unemployment deferments sunset for loans made on or after that date. General forbearance of up to nine months within any 24-month period remains, as do deferments for cancer treatment, military service, and in-school periods.
- July 1, 2028. The phased-out income-contingent plans end; remaining borrowers choose RAP, Tiered Standard, or IBR.
Numbers to Re-check
| Figure | As used here | Where to verify | When it changes |
|---|---|---|---|
| Poverty guideline, household of one, 48 states and DC | $15,960 | HHS ASPE poverty guidelines; Federal Register annual update | Published each January |
| Poverty guideline, each additional person | $5,680 | Same Federal Register notice | Each January |
| Undergraduate Direct Loan fixed rate | 6.52% for 2026–27 | Federal Student Aid interest rate announcements | Set each spring for July 1 disbursements |
| RAP bracket percentages and $50 dependent reduction | 1% to 10% of AGI; $10 monthly floor | StudentAid.gov and federal servicer RAP pages | With any amendment to the 2025 statute or its rules |
| Graduate and Parent PLUS borrowing limits | $100,000 and $65,000 aggregate | Department of Education final rule materials | Effective July 1, 2026; watch for later rulemaking |
| Tax treatment of IDR forgiveness | Generally taxable for 2026 and later | IRS; Taxpayer Advocate Service guidance | Only if Congress restores an exclusion |
Where This Doesn't Apply
Loans that are not Direct Loans. RAP is limited to Direct Loans and excludes Parent PLUS loans and Direct Consolidation Loans that repaid a Parent PLUS loan. A parent borrower reading the RAP brackets is reading a schedule that does not apply to that debt. Commercially held FFEL loans sit under a separate part of the regulations, 34 CFR 682, and private loans are outside the federal framework entirely.
Alaska and Hawaii. The poverty guideline is not national. A household of one is $15,960 in the contiguous states, $19,950 in Alaska, and $18,360 in Hawaii. Because IBR shields 150% of that figure, an Alaska borrower with the $48,000 AGI used above shields $29,925 instead of $23,940, and the IBR payment falls from $200.50 to $150.63. RAP reads AGI only, so the same borrower sees no change at all under RAP. State of residence changes the ranking of the plans.
Married borrowers. The comparison above assumed one AGI. Filing status changes which income enters the formula, and the Department states that RAP payments are prorated for married borrowers so that spousal income is not counted twice when both spouses hold loans. A separate return can lower an income-driven payment while raising the household's tax; the two effects run in opposite directions and the size of each depends on the specific return.
Borrowers close to forgiveness. The plan with the lowest payment is not automatically the plan that discharges soonest. RAP forgives after 360 on-time payments, IBR after 240 or 300 depending on loan dates, PAYE after 240, ICR after 300. A borrower who has already accumulated qualifying payments toward a 20-year IBR horizon is comparing something other than monthly cost when weighing a 30-year plan.
Borrowers who will repay in full. If the balance will be retired before any forgiveness date, the income-driven payment is not a discount but a delay, and total interest rises with the term. The Tiered Standard example illustrates the mechanics: extending a $32,000 balance from 120 to 180 months lowers the payment from $364 to $279 and raises the number of payments by 60.
Anyone in the 90-day exit window. Borrowers moved off SAVE who take no action are placed into the Standard or Tiered Standard Plan by default. That default is a fixed-payment plan, and for a borrower whose income-driven payment would have been lower, the difference is the full gap shown in the table above.
This article explains how the rules are written. It is not tax, legal, or insurance advice, and it does not account for any individual situation. Amounts and thresholds change; verify the current figures at the source listed above before acting.
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