Frequently asked questions
By Severance Calculator Editorial · Updated
The 2026 cliff
How the cliff works in plan year 2026 under the post-ARPA regime.
- Is the ACA subsidy cliff back in 2026?
- Yes. The Inflation Reduction Act (IRA) and the American Rescue Plan Act (ARPA) temporarily eliminated the 400% FPL income ceiling for Premium Tax Credit eligibility. That enhanced PTC expired on 2025-12-31 without a congressional extension. For plan year 2026, the credit reverts to the pre-2021 rules codified in 26 USC §36B and the implementing regulations at 26 CFR 1.36B-1 through 1.36B-5. IRS Rev. Proc. 2025-25 publishes the 2026 applicable-percentage table — the schedule that determines what share of household income a family contributes toward the second-lowest-cost silver plan (SLCSP) benchmark premium. That table contains no row for households with MAGI above 400% of the Federal Poverty Level. At 400% FPL the credit can still reduce a household's share of premiums to a defined cap; at $1 above 400% FPL the credit drops to zero. That instantaneous loss of potentially thousands of dollars is the cliff. The calculator surfaces the exact dollar distance between your current MAGI and the 400% FPL threshold for your household size, along with the estimated PTC value at stake. If Congress passes an extension of the enhanced regime, a regime toggle on the site will reflect the updated rules — but as of the date shown in the site footer, no extension has been enacted for plan year 2026.
- What is the 400% FPL threshold in dollar terms for 2026?
- The PTC rules for plan year 2026 use the HHS ASPE 2025 Federal Poverty Level (FPL) guidelines published in early 2025. For the contiguous 48 states and Washington D.C., 100% FPL starts at $15,650 for a single-person household and increases by $5,500 for each additional person. Multiplying each figure by four gives the 400% FPL cliff thresholds: $62,600 for a household of one, $84,600 for two, $106,600 for three, and $128,600 for four. Alaska and Hawaii use separate, higher FPL tables. For example, Alaska's 100% FPL for a single person is $19,550, making the 400% cliff $78,200. The calculator applies the correct table based on the state you enter. The threshold that matters for PTC eligibility is your projected annual MAGI — not wages alone. MAGI for PTC purposes is Adjusted Gross Income plus tax-exempt interest, the non-taxable portion of Social Security benefits, and any foreign earned income excluded under IRC §911. A household of two with $83,000 in wages but $2,000 in tax-exempt bond interest has MAGI of $85,000, which clears the $84,600 cliff by $400 and eliminates the credit entirely. The calculator computes this precisely so households close to the threshold can see exactly how much income cushion — or exposure — they have.
- What happens if my income is exactly at 400% FPL?
- A household whose MAGI equals exactly 400% FPL is still within the credit-eligible range — the statute at 26 USC §36B(b)(3)(A) and the applicable-percentage table in Rev. Proc. 2025-25 apply the highest bracket (300–400% FPL) to incomes up to and including 400%. At that exact income level, the household's required contribution toward the SLCSP benchmark is 9.78% of household income, and the credit covers any SLCSP premium above that floor. For a concrete illustration: a single person at 400% FPL has MAGI of $62,600. Their required contribution is $62,600 × 9.78% ≈ $6,122 per year, or about $510 per month. If the second-lowest-cost silver plan in their market costs $900 per month, the PTC covers the remaining $390 per month — roughly $4,680 per year. At $62,601 — one dollar over the threshold — the applicable-percentage table has no entry. The credit drops to zero, and the same household owes the full $900 per month premium with no federal assistance. That is the mechanics of the cliff: the loss is binary, not gradual. The calculator shows the exact PTC value at your current MAGI and the cliff distance so households can model what a small income change means for their monthly premium.
- How is the applicable percentage table different in 2026 vs 2024?
- In 2024 — the final year the ARPA enhancements were in effect — there was no upper income ceiling for PTC eligibility. Households with MAGI above 400% FPL could still receive a credit as long as the SLCSP premium exceeded 8.5% of their household income, regardless of how far above 400% they were. That is the smoothed regime: a single percentage cap (8.5%) applies above the top income bracket, creating a gradual phase-out rather than a cliff. For 2026, IRS Rev. Proc. 2025-25 returns to the pre-ARPA table structure. The table contains seven income brackets from 100% to 400% FPL with required-contribution percentages rising from 2.03% (at 100–133% FPL) to 9.78% (at 300–400% FPL). Above 400% FPL the table is silent — no bracket exists, no credit is available. That structural difference is the cliff: in 2024 an over-400% household had a meaningful (if reduced) credit; in 2026 the same household has nothing. The specific percentage values also differ slightly from pre-ARPA years because the IRS adjusts the table annually for inflation. The 2026 percentages in Rev. Proc. 2025-25 differ from those in, say, Rev. Proc. 2020-36 (the last pre-ARPA table). The calculator uses the 2026 Rev. Proc. 2025-25 figures specifically. The underlying regulation governing how the credit is computed — 26 CFR 1.36B-3 — has not changed; only the percentages in the annual revenue procedure change.
- Why is it called a cliff and not a phase-out?
- A phase-out reduces a benefit gradually as income rises — each additional dollar of income reduces the benefit by a small amount, so the loss is spread over a range. Many means-tested programs work this way. The ACA Premium Tax Credit in its pre-ARPA form, and again in 2026, does not work that way above the top bracket. The statute at 26 USC §36B sets eligibility as a function of whether MAGI falls within a defined range — 100% to 400% FPL. The applicable-percentage table in Rev. Proc. 2025-25 has entries only within that range. There is no bracket for 401% FPL, 450% FPL, or 500% FPL. The credit is not reduced at 401%; it is eliminated. A household with MAGI one dollar above the cliff loses the entire credit — which for many households in moderate-cost markets is $3,000–$8,000 per year. This binary structure creates the name. Imagine walking along a path — the credit shrinks as you climb the income scale within the 100–400% range, but there is still ground beneath your feet. At 400% FPL you reach the edge. One more dollar and you step off. The dollar of income that pushed you over is worth far less than the credit it eliminated, which is why households near the threshold find it worth modeling carefully. The calculator exists to show that exact cliff edge — the dollar gap and the PTC value that disappears at the top.
- Will the enhanced PTC come back if Congress extends it mid-year?
- Possibly, but the mechanics depend on how a hypothetical extension is written and when it is enacted. Congress has passed retroactive tax legislation before — including mid-year and even post-year-end changes that applied to the full calendar year. If an extension were enacted that applied retroactively to 2026-01-01, households who enrolled in marketplace coverage and took advance PTC based on the cliff-regime rules would likely need to reconcile the difference on their 2026 federal return. The more complicated scenario is a prospective-only extension — one that takes effect from a date after enactment. In that case, households who went uninsured or enrolled in a less-comprehensive plan expecting no subsidy might face a limited open enrollment window or special enrollment period to revisit their coverage. CMS has historically opened special enrollment periods following major coverage-affecting legislation, but the scope and duration of any such window would depend on the specific legislative text and implementing guidance. The calculator includes a regime toggle. Flipping from the cliff regime to the smoothed regime shows what the enhanced PTC would be worth for your household — giving a sense of how much to follow any congressional action. Nothing on this site constitutes a prediction about legislative outcomes; the site is an educational reference. Monitor IRS.gov and CMS.gov for formal guidance if legislation passes. The IRS publishes updated revenue procedures and notices when statutory changes affect the applicable-percentage table or reconciliation rules.
MAGI mechanics
How Modified Adjusted Gross Income is computed for PTC purposes.
- How do capital gains affect my MAGI?
- Capital gains flow through your AGI and therefore affect PTC MAGI dollar-for-dollar. When you sell an asset at a profit, the gain — whether short-term or long-term — is included in gross income and appears in AGI. Because PTC MAGI starts with AGI and only adds back the three specific items in 26 USC §36B(d)(2)(B), capital gains require no separate add-back: they are already captured in full.\n\nThe federal tax rate applied to the gain (0%, 15%, or 20% for long-term gains) has no bearing on whether the gain appears in MAGI. A long-term gain taxed at 0% still appears on Schedule D and flows into AGI — and thus into PTC MAGI — in full. This is a common source of surprise: a household that qualifies for the 0% long-term capital gains rate may still lose their PTC if the gain pushes MAGI above 400% FPL.\n\nFor a concrete example: a couple has $70,000 in wages and realizes a $20,000 long-term gain from selling mutual fund shares. Their AGI is $90,000. The 400% FPL cliff for a household of two is approximately $84,600. Even though the $20,000 gain may face a 0% federal rate, it pushes PTC MAGI $5,400 above the cliff and eliminates the credit entirely. The calculator models this — entering your expected capital gain in the MAGI field shows immediately how the gain interacts with the cliff threshold.
- How is MAGI different for the PTC versus IRA contribution limits?
- MAGI is not a single universal number — the tax code defines it differently for different purposes, and the PTC definition and the traditional IRA deduction phase-out definition are not identical. Both start from AGI, but the statutory add-backs differ.\n\nFor the Premium Tax Credit under 26 USC §36B(d)(2)(B), the add-backs are: tax-exempt interest, non-taxable Social Security, and foreign earned income excluded under §911. That is the complete list. For the traditional IRA deduction phase-out under 26 USC §219(g)(3)(A), the MAGI calculation adds back the IRA deduction itself, student loan interest deduction, and certain other items — but does not add back non-taxable Social Security. The two lists are similar but not identical.\n\nIn practice, a person can have a PTC MAGI of $64,000 and a traditional IRA MAGI of $58,000 (or vice versa), depending on which add-backs apply to their situation. The most common divergence for near-cliff households involves Social Security recipients: non-taxable Social Security increases PTC MAGI but has no effect on IRA-MAGI under §219(g). Someone managing income to stay under the PTC cliff cannot rely on an IRA-MAGI figure from tax software — the two numbers serve different statutory purposes and must be computed separately using the applicable rules for each.
- Do I include my spouses income if we file separately?
- In almost all cases, married couples filing separately (MFS) are ineligible for the Premium Tax Credit entirely — not merely limited. The rule is established by 26 USC §36B(c)(1)(C), which excludes MFS filers from the credit. This means the question of whose income to include becomes moot: if you file MFS, the credit is generally unavailable regardless of income level.\n\nThere is a narrow regulatory exception at 26 CFR 1.36B-2(b)(2) for victims of domestic abuse or abandonment. Under that exception, a married taxpayer who lives apart from their spouse and is unable to file a joint return may still claim the PTC on an MFS return. The exception requires meeting specific conditions detailed in the regulation, and the IRS Form 8962 instructions explain how to document and claim it. IRS Pub 974 also addresses this scenario.\n\nFor households that file Married Filing Jointly (MFJ), both spouses' income is combined into the household income figure. The applicable PTC MAGI is the joint AGI plus all three add-backs — tax-exempt interest, non-taxable Social Security for both spouses, and §911 exclusions for either spouse. There is no mechanism to exclude one spouse's income from a joint household income calculation. If one spouse's income is pushing the household above the cliff, the available options include reducing that income, increasing above-the-line deductions that reduce AGI, or exploring whether a change in coverage structure is appropriate.
- How are dependents handled for household income?
- The PTC household income concept is defined in 26 USC §36B(d)(2)(B) and includes the MAGI of the taxpayer, any spouse (if filing jointly), and each dependent who is required to file a federal income tax return for the year. The key phrase is required to file — a dependent's income is not automatically added; it is included only if that dependent crosses the filing threshold tests in 26 USC §6012.\n\nThe §6012 filing thresholds for dependents depend on the type and amount of income. For 2026, a dependent with unearned income (interest, dividends, capital gains) generally must file if that income exceeds $1,350. A dependent with only earned income must file if wages exceed the applicable standard deduction amount. A dependent with a mix of both follows a two-part test described in the Form 1040 instructions. If a dependent's income falls below all applicable thresholds, they are not required to file, and their income is excluded from the household income used to compute the PTC.\n\nFor a concrete example: a couple claims their 19-year-old college student as a dependent. The student has $900 in bank interest and no wages. Because $900 is below the unearned-income filing threshold, the student is not required to file, and the $900 is excluded from household MAGI. If the same student had $2,000 in dividends, they would be required to file, and that $2,000 would be added to household income. The regulation at 26 CFR 1.36B-4(a)(3) addresses dependent income in the reconciliation context, and IRS Pub 974 provides worked examples for dependent income inclusion.
MAGI-reduction moves
Pre-year-end actions that lower MAGI and may recapture PTC.
- Can an HSA contribution lower my MAGI for PTC purposes?
- Yes. Contributions to a Health Savings Account are deducted above the line on Schedule 1, line 13 (via Form 8889), which reduces Adjusted Gross Income. Because MAGI for the Premium Tax Credit starts with AGI and then adds back only tax-exempt interest, non-taxable Social Security, and foreign-earned income excluded under IRC §911, an HSA deduction flows straight through — a $4,400 HSA contribution for a self-only filer drops MAGI by exactly $4,400. For 2026, Rev. Proc. 2025-19 sets the contribution limit at $4,400 for self-only coverage and $8,750 for family coverage, plus a $1,000 catch-up for account holders age 55 or older. A family-coverage account holder who is 55 or older can therefore contribute up to $9,750 and reduce MAGI by that full amount. To qualify, you must be enrolled in a High-Deductible Health Plan (HDHP) on the first day of the month for each month you contribute, and you must not be enrolled in Medicare or claimed as a dependent on someone else's return. Employer contributions count toward the same annual cap. For households sitting just above the 400% FPL cliff, the HSA deduction is one of the cleanest available levers because it requires no income or phase-out calculation — the contribution equals the deduction, dollar for dollar, up to the statutory limit. The calculator surfaces how far your current MAGI sits from the cliff so you can determine whether the available HSA room is sufficient to bridge the gap.
- How does a traditional IRA deduction interact with the cliff?
- A deductible traditional IRA contribution is an above-the-line deduction claimed on Schedule 1, line 20, under 26 USC §219. Like the HSA deduction, it reduces AGI and carries through unchanged into MAGI for Premium Tax Credit purposes — a $7,000 IRA deduction for a filer under age 50 reduces MAGI by exactly $7,000. Filers age 50 and older may contribute up to $8,000 under the catch-up provision. Deductibility is not automatic. If you or your spouse are covered by a workplace retirement plan (a 401(k), 403(b), SIMPLE IRA, or similar), the deduction phases out once MAGI — computed using a slightly different add-back rule than the PTC calculation — exceeds certain thresholds. For 2025 those thresholds are $77,000–$87,000 for single filers covered by a workplace plan, and $123,000–$143,000 for married-filing-jointly filers where the contributing spouse is covered. If neither spouse participates in a workplace plan, the deduction is available at any income level with no phase-out. IRS Publication 590-A provides the worksheets to determine the exact deductible amount when a phase-out applies. For a self-employed individual with no other retirement plan, a traditional IRA can reduce MAGI by up to $7,000–$8,000 with no phase-out. However, self-employed filers near the cliff often have access to larger vehicles such as a SEP-IRA or Solo 401(k) that permit much higher contributions; the IRA may then serve as a supplemental layer after those larger buckets are filled.
- What is the self-employed health insurance SEHI circularity?
- Self-employed individuals who pay their own health insurance premiums may deduct those premiums under 26 USC §162(l). This deduction reduces AGI and therefore MAGI — which can increase the Premium Tax Credit. But the PTC itself affects how much of the premium is deductible: only the net premium the taxpayer actually pays out of pocket (after subtracting the PTC) qualifies for the §162(l) deduction. More PTC means a smaller SEHI deduction; a smaller SEHI deduction means higher MAGI; higher MAGI means slightly less PTC. That feedback loop is the SEHI circularity. IRS Publication 974 addresses this directly. Worksheet W in that publication provides a two-iteration convergence procedure: compute a preliminary PTC using the unadjusted MAGI, use that preliminary PTC to recompute the SEHI deduction, then compute a revised PTC with the revised MAGI. Two passes are generally sufficient to land on the stabilized values. Taxpayers who ignore the circularity and claim both the full §162(l) deduction and the full PTC on the same return will have an inconsistency the IRS may flag during processing. For a self-employed household sitting near the 400% FPL cliff, the circularity creates an additional complication: a small change in one variable (say, a $500 increase in net SE income) ripples through both the SEHI deduction and the PTC simultaneously, making the effective rate on that last dollar of income higher than simple marginal rate analysis would suggest. The calculator does not replicate Publication 974 Worksheet W in full, but it surfaces the estimated PTC exposure so you can take the precise figures to a tax preparer for the iterative calculation.
- Is a SEP-IRA contribution effective for self-employed income near the cliff?
- A SEP-IRA contribution made by a self-employed individual reduces net self-employment income, which in turn reduces AGI and MAGI for the Premium Tax Credit. Under 26 USC §408(k), the deductible limit is the lesser of 25% of net self-employment earnings (after the SE tax deduction) or $70,000 for 2025. For a self-employed filer with $120,000 in net earnings, 25% of net SE earnings works out to roughly $18,527 after accounting for the deductible half of SE tax — a substantial reduction compared to the $7,000–$8,000 ceiling on a traditional IRA. Because the contribution ceiling scales with income, the SEP-IRA is particularly powerful for consultants, freelancers, and sole proprietors whose income is largely self-employment in nature. A self-employed individual whose net SE earnings place household MAGI at, say, $65,000 — just $2,400 above the 400% FPL cliff for a household of one — could potentially eliminate the overage entirely with a modest SEP contribution, recapturing a PTC that might be worth several thousand dollars annually. SEP-IRA contributions can be made up to the tax-filing deadline including extensions (October 15 for most calendar-year filers), giving meaningful flexibility after year-end once actual income is known. The tradeoff is that SEP contributions are restricted to net SE earnings, so a filer with substantial W-2 income and modest SE income will have a smaller ceiling. Filers in that situation may find a Solo 401(k) with an employee-elective deferral component more effective, though that vehicle requires establishing the plan before December 31 of the tax year.
- Can I harvest capital losses to drop below 400% FPL?
- Capital loss harvesting — selling positions that have declined in value to realize a loss — can reduce MAGI and potentially push household income below the 400% FPL cliff. Under 26 USC §1211(b), net capital losses (after offsetting all capital gains) may offset up to $3,000 of ordinary income per year for taxpayers filing as single or married filing jointly. Any losses beyond that $3,000 carry forward indefinitely to future tax years. The order of offsets matters: short-term capital losses must first offset short-term capital gains, and long-term losses must first offset long-term gains, before cross-netting occurs. Once all gains are absorbed, the remaining net loss reduces ordinary income, which reduces AGI and MAGI. A household sitting $3,000 above the cliff could in principle harvest exactly enough losses to bring MAGI to the 400% FPL threshold and preserve the entire PTC — but that level of precision requires projecting all other income items (dividends, interest, a year-end bonus) to avoid an overshoot. The practical limit is that loss harvesting requires holding securities with unrealized losses, and the wash-sale rule (26 USC §1091) disallows a loss if you buy a substantially identical security within 30 days before or after the sale. Beyond the $3,000 ordinary-income offset, additional harvested losses do not reduce MAGI in the current year — they carry forward to offset future gains. Loss harvesting is therefore most effective for households whose MAGI overage is $3,000 or less, and less useful for those who are $10,000 or more above the cliff unless they also have significant capital gains to absorb in the same year.
- Should I defer a Roth conversion if I am near the cliff?
- A Roth conversion moves pre-tax retirement funds into a Roth IRA; the converted amount is taxable income in the year of conversion under 26 USC §408A. There is no offsetting deduction — the full converted amount adds to AGI and flows directly into MAGI. For a household near the 400% FPL cliff, even a modest Roth conversion can push income over the threshold and eliminate the PTC entirely. A $5,000 conversion that generates $1,100 in federal income tax could simultaneously erase a $4,000 annual PTC, making the effective cost of the conversion far higher than the marginal rate alone implies. The conversion math is straightforward to model: add the planned conversion amount to projected MAGI and compare the result to the 400% FPL threshold for your household size. If the sum exceeds the threshold, the PTC loss is an additional cost of the conversion that must be weighed against the long-term Roth benefits (tax-free growth, no required minimum distributions). The calculator surfaces the dollar gap between your estimated MAGI and the cliff so you can size a potential conversion accordingly. Deferring to a year when income is structurally lower — after retirement, after a high-income year normalizes, or in a year without self-employment income — is a common approach. Partial conversions sized to stay just under the cliff threshold are also used, though this requires careful income projection because other year-end items (dividends, interest, a surprise bonus) can shift final MAGI after a conversion is already executed. Roth conversions cannot be undone after the 2017 repeal of the recharacterization option for conversions.
Marketplace logistics
Enrollment, SBM vs FFM, and SLCSP precision.
- What is the difference between a state-based and federally-facilitated marketplace?
- ACA marketplaces fall into three operational categories. A State-Based Marketplace (SBM) is an exchange that a state owns and operates end-to-end — its own website, eligibility system, and customer-service infrastructure. Examples include Covered California (CA), NY State of Health (NY), MNsure (MN), and Access Health CT (CT); roughly 18 states plus the District of Columbia operate SBMs. Consumers in SBM states enroll at the state's own URL, not healthcare.gov.\n\nA Federally-Facilitated Marketplace (FFM) is run by the federal Centers for Medicare and Medicaid Services (CMS) and is accessed through healthcare.gov. Most states that chose not to build their own exchange operate under the FFM. The enrollment rules, subsidy structure, and plan requirements are the same as in SBM states because both operate under the same statute and 45 CFR Part 155 — the difference is administrative: which agency runs the website and call center.\n\nA third category, the SBM-FP (State-Based Marketplace using the Federal Platform), sits in between: the state retains legal authority over its marketplace but routes consumers through healthcare.gov's technology. Oregon and New Mexico have used this model in recent years.\n\nFor subsidy purposes, the marketplace type does not affect PTC eligibility or the §36B calculation — the SLCSP benchmark mechanism applies uniformly. The distinction matters mainly for enrollment deadlines (SBMs sometimes extend past the federal window) and for which agency processes the application. KFF maintains a current map of marketplace types by state.
- How accurate is the calculators SLCSP estimate?
- The calculator's SLCSP figures are derived from state-level age-band averages aggregated from KFF subsidy-calculator data and CMS rate-filing public-use files. At that level of aggregation the estimates are useful for ballpark planning — they give a reasonable order-of-magnitude sense of the benchmark premium and the resulting PTC — but they are not the same as the actual SLCSP for a specific household in a specific zip code.\n\nThe statutory benchmark is the second-lowest-cost Silver plan in the rating area for the household's location, under 26 USC §36B(b)(3)(B). Rating areas are geographic units defined by each state, typically a county or multi-county cluster, and premiums vary by rating area and by the ages of the enrollees being covered. Zip-level variance from state averages can run ±20–30% depending on the market. A household in a rural county with fewer insurer entrants may face a SLCSP well above the state average; a dense metro area may face one below it.\n\nThe calculator surfaces an estimate so households can understand the cliff mechanics and approximate their PTC exposure. For an enrollment decision or an APTC advance-payment election, the number to use is the actual SLCSP displayed on healthcare.gov or the relevant SBM portal after entering the specific zip code, coverage dates, and enrollee ages. That figure is what CMS uses to compute advance PTC payments and what the IRS reconciles on Form 8962.
- When is the 2026 open enrollment period?
- For plan year 2026 coverage on the federally-facilitated marketplace (healthcare.gov), CMS sets the open enrollment window under 45 CFR 155.410. The federal window runs from November 1, 2025 through January 15, 2026. Plans selected by December 15, 2025 take effect January 1, 2026; plans selected between December 16 and January 15 take effect February 1, 2026. Enrollments submitted after January 15, 2026 are not accepted on the FFM without a qualifying Special Enrollment Period.\n\nState-Based Marketplaces set their own open enrollment windows and frequently extend past the federal deadline. Covered California historically closes enrollment on January 31, and several other SBMs use similar extended windows. Consumers in SBM states should confirm the specific deadline for their state exchange rather than assuming the federal dates apply.\n\nIf you miss open enrollment without a qualifying life event, enrollment in marketplace coverage is generally unavailable until the next open enrollment period — with plan year 2027 coverage starting November 1, 2026. Qualifying SEP triggers under 45 CFR 155.420 include losing other minimum essential coverage, a household move into a new rating area, a marriage, or a birth or adoption. An income change alone does not open an SEP for initial enrollment; it is relevant primarily for adjusting advance PTC amounts mid-year once already enrolled.
- Can I drop marketplace coverage mid-year if my income changes?
- Voluntarily dropping marketplace coverage mid-year is permitted — there is no regulatory prohibition on terminating enrollment. A consumer can request cancellation of their plan at any time through healthcare.gov or the relevant SBM portal. The plan typically terminates at the end of the month in which the request is processed.\n\nThe financial consequence worth understanding is advance PTC reconciliation. If you received Advance Premium Tax Credit payments during the months you were enrolled and your final annual MAGI for 2026 differs from the projected income reported at enrollment, the IRS reconciles the difference on Form 8962. If actual MAGI was higher than projected — including because a mid-year income change pushed you above 400% FPL — you may owe back some or all of the advance PTC received during enrolled months. The repayment caps under 26 USC §36B(f)(2)(B) apply only to households whose income remains below 400% FPL; households that end the year above 400% must repay the full excess advance PTC with no cap.\n\nAn income increase that permanently moves a household out of an APTC-eligible income band is a qualifying life event under 45 CFR 155.420, which permits — but does not require — the consumer to terminate coverage through a Special Enrollment Period process. Common practice is to notify the marketplace of the income change so that advance PTC payments are adjusted prospectively, reducing reconciliation exposure at tax time rather than accumulating an overpayment throughout the year.
If Congress extends the enhanced PTC
What changes if the ARPA enhancements are extended for plan year 2026.
- What is the smoothed regime?
- The "smoothed regime" refers to the enhanced Premium Tax Credit structure that applied for plan years 2021 through 2025 under American Rescue Plan Act §9661 and Inflation Reduction Act §13207. Under that structure, households with MAGI above 400% of the Federal Poverty Level remained eligible for PTC as long as the second-lowest-cost silver plan (SLCSP) benchmark premium exceeded 8.5% of their household income. No income ceiling cut off the credit; instead, the applicable percentage was capped at 8.5% across all higher-income households, allowing the credit to taper gradually rather than vanish at a single threshold. That gradual taper is what "smoothed" means — premium exposure rises with income but never falls off a cliff.\n\nThe smoothed regime is the alternative to the pre-2021 cliff structure that applies under 26 USC §36B as originally enacted. Under the statute's original applicable-percentage table, the credit phases up across income brackets from 100% to 400% FPL — and then stops entirely. The table contains no bracket above 400% FPL. IRS Rev. Proc. 2025-25, which governs plan year 2026, restores that original table, confirming no smoothing provision applies unless Congress acts.\n\nIf Congress were to extend the enhanced PTC for 2026, it would reinstate the 8.5% cap for incomes above 400% FPL, effectively eliminating the cliff again. The calculator surfaces both scenarios via its regime toggle: the current default reflects the 2026 cliff regime per Rev. Proc. 2025-25; the alternate view models how a smoothed-regime extension would change the credit available at your entered MAGI. The toggle does not predict whether Congress will act — it illustrates the dollar difference between the two legal structures so households can understand what is at stake.
- Will I have to repay PTC if I planned for the cliff and Congress extends?
- If you planned conservatively for the cliff — for example, by capping projected MAGI just below 400% FPL to preserve the credit — and Congress retroactively extends the smoothed regime for plan year 2026, you would not face any repayment obligation from that scenario. The extension would mean the law provided a credit for incomes above 400% FPL all along. A household that held income below 400% FPL as a precaution would simply have left some unclaimed credit on the table; at tax-filing time on Form 8962, reconciliation would calculate the actual PTC based on the extended rules and the household could claim any remaining credit it did not receive as Advance PTC (APTC) during the year.\n\nThe repayment risk runs in the opposite direction. If a household took APTC during 2026 assuming a smoothed regime would be enacted — drawing credits above what the cliff-regime statute authorizes — and Congress never passes an extension, that household would owe back the excess APTC at tax time. Under 26 USC §36B(f)(2)(B), repayment of excess APTC for households whose actual income exceeds 400% FPL carries no statutory cap; the full excess is due. That is the scenario that creates genuine exposure, and it is why the calculator defaults to the cliff regime rather than the smoothed regime.\n\nIf Congress does act, the mechanism would likely follow the ARPA precedent: the original ARPA enhancement was signed into law in March 2021 but applied retroactively to January 1, 2021. Taxpayers who had already enrolled and elected APTC under the old rules reconciled everything on their 2021 Form 8962. A mid-2026 or even late-2026 extension could work the same way — the IRS would publish updated guidance and Form 8962 instructions to reflect the retroactive change. Consider monitoring IRS.gov and healthcare.gov announcements for any formal guidance if you are making APTC elections for 2026 under conditions of legislative uncertainty.