What the One Big Beautiful Bill Act Changed for Taxes and Health Coverage

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On January 1, 2026, a single mother opened the bill for the same marketplace health plan she had carried the month before. Her payment was going from $85 a month to nearly $750.

In Salt Lake City, a freelance filmmaker watched his own premium climb from just under $350 a month to nearly $500, and decided to absorb it, because he needs the insurance. The single mother said that if Congress does not revive the subsidies she will drop her own coverage and keep the plan only for her daughter.

Neither of those increases was written into the One Big Beautiful Bill Act. The tax law did change your return, mostly in small ways and mostly on a timer, but the change most households felt first in 2026 came from something the act never touched: the enhanced marketplace premium tax credits that Congress let expire at the end of 2025.

The tax law itself is Public Law 119-21, H.R. 1 of the 119th Congress, approved July 4, 2025. One bill, one signature, and a set of provisions that start and stop on different days. Sorting out which is which is most of the work here.

Public Law 119-21 reached your tax return before it reached your paycheck

The effective dates split into two groups. The rate section applies to taxable years beginning after December 31, 2025. The state and local tax changes, and with them the standard deduction and senior deduction, apply to taxable years beginning after December 31, 2024.

In plain terms: the second group reached backward into the year the bill was signed, so it landed on the 2025 return you filed in the spring of 2026. The rate structure applies to income you earn in 2026 and shows up on the return you file in 2027.

Four of the new deductions, for tips, overtime, car loan interest and seniors, come with a form of their own. Filers attach Schedule 1-A to their Form 1040, 1040-SR, or 1040-NR when filing a 2025 tax return, and anyone who qualifies for one or more of the new deductions can use it.

None of this moved your paycheck during 2025. The Internal Revenue Service (IRS) provided transition relief to employers and payers for the 2025 reporting requirements rather than rebuilding withholding in the middle of a year. So the money came back later, in a lump.

The average tax refund as of April 3, 2026 was $3,462, up 11.1 percent compared with $3,116 a year earlier. Resist reading that as the size of the tax cut. It is mostly a measure of how much extra had already been withheld from pay before the law existed, and was then handed back.

The standard deduction: a cliff that did not arrive, then a little extra

Section 70102 of the act does something tiny on the page and large in effect. It amends section 63(c)(7) of the tax code by striking the phrase ending the higher deduction before January 1, 2026, and by rewriting the paragraph heading from 2018 Through 2025 to Beginning After 2017. Deleting a date is how Congress makes a thing permanent. The doubled standard deduction from 2017 no longer has an expiration sitting next to it.

The same section raised the amounts, to $23,625 for heads of household and $15,750 for single filers. For 2026 the IRS set the standard deduction at $32,200 for married couples filing jointly, $16,100 for single filers and married individuals filing separately, and $24,150 for heads of household, up from $31,500, $15,750 and $23,625 in 2025.

Keep those two moves apart in your head. The Congressional Research Service (CRS) describes these as extensions of expiring rules from the 2017 Tax Cuts and Jobs Act that are then increased beyond their levels in the TCJA. The extension is the bulk of it, and an extension is not new money; it is the absence of a loss you were scheduled to take. The increase is the new money, and it is the smaller half.

A $2,200 child credit the poorest families still cannot reach in full

Section 70104 struck the credit’s own January 1, 2026 sunset, raised it from $2,000 to $2,200 per child, and set both the $2,200 and the $1,400 refundable cap to rise with inflation. It also tightened the identification rule: the child’s Social Security number must have been issued to a citizen or under the work-authorized provisions of the Social Security Act, and issued before the due date for such return.

How much of that credit you actually receive depends on what you earn, and the formula is unforgiving at the bottom. The refundable portion equals 15 percent of the family’s earned income in excess of $2,500, up to $1,700 per child. A family earning below $2,500 is ineligible for the refundable credit entirely, and a family earning a little above it collects fifteen cents of refund for each dollar over that line.

The Institute on Taxation and Economic Policy (ITEP), which argues the law tilts upward, puts a count on who that leaves out: ninety-nine percent of children in the poorest fifth of households will receive a reduced credit or no credit at all, while zero percent of children in the richest fifth are excluded by the refundability rules.

Both ends of the income scale can lose the credit, but for opposite reasons. Very high earners lose it to a means test written in 2017. The poorest lose it to a formula that requires earnings they do not have.

The state and local tax cap goes to $40,000, then snaps back

CRS lays out the schedule. The limit rises to $40,000 (increased 1 percent per year through 2029), with a phaseout for taxpayers with incomes over $500,000 on a threshold that also climbs 1 percent a year, and a floor so that between 2025 and 2029 the phaseout cannot cut a deduction below $10,000. Starting in 2030, the maximum deduction reverts to $10,000.

That floor is in the statute in so many words: the reduction shall not result in the applicable limitation amount being less than $10,000. Which is to say: however high your income, you keep at least the old cap, and in 2030 everybody is back to it.

Before you plan around any of that, check whether it reaches you at all. The Tax Foundation notes that the 2017 law’s doubled standard deduction cut the number of itemizers from about a third of taxpayers to about 9 percent, and that higher-income taxpayers in high-tax locations are the ones the cap most affects. If you take the standard deduction, the cap is not your provision, and raising it is not your tax cut.

Social Security told beneficiaries their benefits were no longer taxed. That is not what the law did.

On July 3, 2025, the Social Security Administration sent an email and posted a press release saying the new law eliminates federal income taxes on Social Security benefits for most beneficiaries, and that nearly 90 percent would no longer pay them.

The provision that would have done that had been taken out of the version that became law, because it violated Senate rules. What passed instead was a new $6,000 deduction for taxpayers age 65 or older, from 2025 through 2028. The agency updated the press release after the outcry and the media coverage.

Here is what section 70103 actually does. For a taxable year beginning before January 1, 2029, it allows a deduction of $6,000 for each qualified individual. A qualified individual is the taxpayer, or a spouse on a joint return, who has attained age 65 before the close of the taxable year, and the $6,000 shrinks by 6 percent of modified adjusted gross income above a threshold.

Schedule 1-A walks the arithmetic line by line. Subtract $75,000 ($150,000 if married filing jointly) from your modified adjusted gross income, multiply the excess by 6 percent, subtract the result from $6,000, and enter zero if that comes out at zero or less. A couple both aged 65 or older and below the threshold deducts $12,000 between them. A couple far enough above it deducts nothing.

Now notice what is missing. Section 86 of the code, the section that decides how much of a Social Security benefit counts as income, was not amended. Benefits are still included on the same two-tier formula, up to 85 percent of the social security benefits received during the year.

The dollar thresholds in that section are written into the statute with no cost-of-living adjustment, so every year benefits rise, more of them cross a line that never moves. A deduction is not a repeal. And this deduction runs out while section 86 stays.

Which of this dies first

CRS draws the line inside a single passage about one section: the law makes the suspension of personal exemptions permanent, and it temporarily creates a new $6,000 deduction for taxpayers 65 or older, from 2025 through 2028. That pattern repeats through the whole title. The structural pieces were written without an end date. The headline extras were written with one.

The new deductions for tips, overtime, car loan interest and seniors are available for tax years 2025 through 2028. The state and local tax schedule runs a year longer before it reverts.

The Tax Foundation, which favors permanence for the rate structure, is blunt that the law’s arithmetic depends on those end dates holding. Temporary tax policy is usually ill-advised, it argues, but if it means these provisions expire as scheduled and do not win a permanent place in the code, that would be for the better. Read it the other way and you have the household’s risk: each of those dates is a future vote, not a certainty, and votes go both ways.

The estate tax exclusion is the one large number made permanent at a higher level

Section 70106 strikes $5,000,000 and inserts $15,000,000 into section 2010(c)(3), resets the inflation base to calendar year 2025, and applies to estates of decedents dying and gifts made after December 31, 2025. No sunset is attached to it.

For scale, look at how few estates ever file. IRS Statistics of Income data show 6,158 returns were filed in 2021, and after the exemption then in force, 2,584 of them, 52 percent, were taxable. That was under a lower exclusion than the act set. For nearly every family reading this, the estate tax is a thing that happens to other people, and it now happens to fewer of them.

The case for raising it was made in person a decade before the act passed. At a House Ways and Means hearing on March 18, 2015, a cattle operation owner told the committee that after his grandfather died, then his great-uncle’s father, then his grandmother, then his own father, the first 24 years of my working career contained no day he did not have to deal with planning for the estate tax.

He said he watched two and a half generations of hard work, sweat and savings evaporate, that the family had to go in and liquidate twice, and that liquidations in a cattle operation are very risky. Even after that, he said, a liquidity problem remained, and that is when the layoffs came. Whatever you think of the tax, the burden he described is the planning, not the bill.

A bronze plan can now feed a health savings account

Section 71307 treats bronze and catastrophic plans available as individual coverage through an Exchange under the Affordable Care Act as high deductible health plans (HDHPs) for health savings account (HSA) purposes, for months beginning after December 31, 2025.

Treasury and the IRS filled in the practical details in Notice 2026-05. As of January 1, 2026, those plans are HSA-compatible regardless of whether the plans satisfy the general definition of an HDHP, and the notice adds that they do not have to be purchased through an Exchange. If you have been buying the cheapest marketplace plan and were told you could not open a health savings account, that answer changed.

Direct primary care, where you pay a doctor a flat monthly fee instead of running everything through insurance, used to disqualify you from contributing to an HSA. Section 71308 removes that bar, so long as monthly fees do not exceed $150 for one person, or twice that where the arrangement covers more than one. The statute carves out procedures that require the use of general anesthesia, prescription drugs other than vaccines, and laboratory services not typically administered in an ambulatory primary care setting.

Amy Townsend, MD, a Bridge City family physician who chairs the Texas Medical Association’s Committee on Independent Physician Practice, welcomed the change. It will give patients and doctors a lot more control and flexibility, without insurance interference, she said. She had transitioned from hospital-based care to direct primary care in 2020 after financial strain, a heavy administrative workload and a loss of clinical autonomy, telling Texas Medicine that her old environment left her minimal freedom to make what she considered the best decisions for her patients.

Medicaid adds 80 hours a month, starting January 1, 2027

Section 71119 writes a new subsection into section 1902 of the Social Security Act, and the operative words are worth reading as written: a State shall provide, as a condition of eligibility for medical assistance for an applicable individual, that such individual is required to demonstrate community engagement. The clock starts no later than the first day of the first quarter beginning after December 31, 2026, or earlier if a state chooses.

The Centers for Medicare and Medicaid Services (CMS) states the date plainly for states: beginning January 1, 2027, states must condition Medicaid eligibility for applicable individuals on their demonstration of community engagement, unless a state opts to implement sooner.

“Community engagement” is the statute’s phrase for something more ordinary. CRS describes who it reaches: nonpregnant, nondisabled adults aged 19 through 64 who are eligible for or enrolled under the Affordable Care Act Medicaid expansion pathway, or a waiver providing minimum essential coverage, in the 50 states and the District of Columbia.

The qualifying activities are work, participation in a work program or community service, or enrollment in an education program, at a minimum of 80 hours in a month. If your Medicaid comes through a different eligibility group, or you live in one of the five territories, this does not reach you.

The statute also lists who is exempt. It covers people who are medically frail or otherwise has special medical needs, spelled out as blindness or disability, a substance use disorder, a disabling mental disorder, a physical, intellectual or developmental disability that significantly impairs one or more activities of daily living, or a serious or complex medical condition.

It also covers people already complying with the state’s cash-assistance work rules, a member of a household that receives supplemental nutrition assistance and is not exempt from that program’s work requirement, and people in drug or alcohol treatment.

If a state cannot verify that you complied, it must send a notice and hold your coverage open for the 30-calendar day response period, and it may not terminate during that window, or until it determines you ineligible, whichever comes later. Thirty days is not long to find a pay stub you did not know you needed.

Being exempt and being recorded as exempt are two different things

An Arkansas man was working 30 to 40 hours a week at a poultry plant when the state cut off his Medicaid in 2018 under its own work requirement. He was working more hours than the rule demanded. He later learned he’d lost his coverage because the state required him to log his work hours every month, and he thought he only needed to do it once.

Arkansas restored his coverage in January 2019. By then, going without his medications had done its own work: his breathing deteriorated, he lost the job at the chicken plant, his failing health made it impossible to keep the part-time fast food work he found next, and he eventually signed up for disability. He died of a heart attack days before Thanksgiving in 2024. The requirement never asked him to do anything he was not already doing.

The Government Accountability Office (GAO) found the aggregate and named the mechanism. After approximately 17,000 beneficiaries lost coverage for non-compliance with work requirements, Arkansas revised its procedures to let people report compliance to state staff over the phone. Nobody concluded that fewer Arkansans should work. The state concluded that the reporting channel was the problem, and fixed the channel.

Georgia’s more recent program shows the same shape. One man, who works part time in exchange for housing and picks up odd jobs, lives in an area outside Atlanta without reliable internet and cannot afford a phone plan with unlimited data.

It takes him more than an hour each month to upload the employment documents that reconfirm his eligibility, often on the free Wi-Fi at his public library. Sometimes, he said, the task has stretched days, even a whole week, because the Pathways verification portal freezes or crashes.

Mail is already moving ahead of the federal date. New Jersey sent letters describing all its eligibility changes between April and June, then additional follow-up letters specifically about work requirements from July to September. A letter of that kind is the opening of a paperwork obligation, not a notice that you have lost anything, and it is the cheapest moment to sort out your exemption.

State Medicaid directors, who have to build the machinery, list the same problem in budget terms: the costs of making IT systems changes or procuring new systems, whether new eligibility workers and call center staff are needed, and whether the state will need and be granted the good faith effort extension the act allows, which lets the federal health department push the deadline out by up to two years. Your state’s answer to that last question determines what the process feels like from your side of the counter.

The case CMS makes for the requirement

The argument for the rule is not that people on Medicaid are idle. It is that coverage provided free to people who are out of work creates an employment disincentive for low-wage workers, and that requirements attached to benefits raise employment and reduce poverty.

An issue brief from the Department of Health and Human Services office of the Assistant Secretary for Planning and Evaluation (ASPE) rests that on a review of the research on the past three decades of work requirements in human services programs, drawing on a systematic review by Mathematica and microsimulation estimates from the Urban Institute.

CMS Administrator Mehmet Oz frames the rule as an opening rather than a test. It helps Americans build skills and independence through work, education, job training, or community service, he said, and CMS describes the rule as a nationwide operational framework designed to promote economic stability, self-sufficiency, and independence.

The two sides here are not really arguing about the same question. Supporters are arguing about whether the requirement changes what people do. GAO’s Arkansas finding is about whether the paperwork reaches people who are already doing it. Both can be true at once, and only the second one decides whether your card still works at the pharmacy.

Why the January premium bill jumped

For 2021 through 2025, a temporary schedule rewrote the premium tax credit in three ways. It eliminated the maximum income limit (400 percent of FPL), which is 400 percent of the federal poverty level, cut the applicable percentages, and stopped indexing them. Households between 100 and 150 percent of the poverty level paid nothing toward a benchmark plan, and higher earners stayed eligible at all. The sunset date established for that enhanced schedule was January 1, 2026, and Congress did not extend it.

What took its place is the permanent table that had been underneath the whole time. Section 36B runs from 2.0 percent of household income up to 133 percent of the poverty line to 9.5 percent between 300 and 400 percent, and the table simply stops at 400 percent. Above that line there is no credit at all, at any premium.

That stop is a cliff, not a slope, and it is the single most important thing to understand about your January bill. KFF worked the example: a 60-year-old earning $64,000, which is 409 percent of the poverty level, would pay an estimated $14,931 for their annual premium with no tax credit, while a person the same age in the same city earning $62,000, or 396 percent, would pay $6,175 with a credit.

The lower earner’s premium is capped at about 10 percent of income. The higher earner pays full price, likely about a quarter of income. Two thousand dollars of extra income moves the same person from a capped premium to the sticker price.

Who that lands on is not who most people picture. Using Treasury estimates, ASPE reported that over 4 million small business owners and self-employed workers would have Marketplace coverage in 2024, if they held the same share of enrollment they did in 2022. Self-employment income is exactly the kind that crosses 400 percent of the poverty level in a good year and drops back the next, which makes the cliff something a person can fall over by having a strong quarter.

Regulators said so in advance. Announcing Maryland’s approved 2026 rates, Insurance Commissioner Marie Grant warned that with the pending expiration of the enhanced federal tax credits, and with the state subsidy only able to partially replace the reduction, consumers may see sizable rate increases, much higher than in recent years. She told people to read their renewal notice carefully and work with the state marketplace rather than let the plan roll over.

Some states put money in. Colorado Governor Jared Polis signed Senate Bill 178 on Tuesday, June 2, 2026, projected to provide $140 million in funding for assistance programs that reduce premiums for plans bought through Connect for Health Colorado, with some going to OmniSalud, the state program covering low-income immigrants who are not eligible for federal help. A state backfill exists only where a legislature voted for one, which is why the same federal change produced very different bills in different states.

Hospitals saw the other end of it. Mike Marks, chief financial officer of the hospital chain HCA Healthcare, told an April 24 earnings call that the system saw a 15 percent decrease in Affordable Care Act covered admissions and a 16 percent increase in uninsured admissions year over year in the first quarter of 2026, which he estimated reduced quarterly earnings before interest, taxes, depreciation and amortization by about $150 million.

Carrie Cochran-McClain, chief policy officer for the National Rural Health Association, told the trade publication Healthcare Brew that rural hospitals are barely staying afloat. When people drop coverage, the cost does not vanish; it moves to whoever treats them next.

Who this law was for

Both camps have run the numbers, and they are not counting the same thing, which is why both sets can be correct.

The Tax Foundation, which favors permanence, models after-tax income rising 5.4 percent on average in 2026, with the bottom quintile up 2.6 percent and the middle quintiles up 5.7 and 6.3 percent.

Its own model then turns: by 2034, after-tax income for the bottom quintile falls by 0.4 percent on a conventional basis as tighter rules for premium tax credits, the earned income tax credit and the child tax credit take effect, becoming a 0.5 percent gain once economic growth is counted. The health provisions, in other words, show up in the tax distribution eventually, even in a friendly model.

ITEP counts the dollars rather than the percentages and gets a different picture: more than 70 percent of the tax cuts go to the richest fifth of households and nearly half to the top 5 percent, while the poorest Americans see almost nothing, with the law reducing federal revenue by around $570 billion in 2026 alone. A percentage gain and a share of dollars answer different questions, and a decent percentage of a small income is still a small number of dollars.

The permanence argument has its own witness. According to the House Ways and Means majority’s account of its January 2025 hearing, Alison Couch, a Georgia accountant and small business owner, told the committee that 199A has provided tax relief to free up cash flow for the business owners whose books she keeps, which fed hiring, wages and benefits.

That case does not depend on the deductions being large. It depends on the rule staying still long enough to plan against, which is precisely what the 2028 and 2030 dates elsewhere in this law do not do.

What is actually on your list

If you are 65 or older, or you had tip income, overtime, or a loan on a new car, the deduction is on Schedule 1-A, and it is there each year through tax year 2028. If you take the standard deduction, the higher state and local tax cap does nothing for you and you can stop tracking it.

If you are covered through the Medicaid expansion, the useful habit is proof, kept as you go: hours worked, school enrollment, a treatment program, or the document that puts you in an exempt category. The 30 calendar days a state must give you after a notice of noncompliance is the window in which that folder either exists or does not. Arkansas learned that lesson at some expense, and the remedy turned out to be a phone line.

And if your marketplace premium jumped, the mechanics are worth carrying even after the argument moves on. Your credit is set by where household income lands against the poverty line for your household size, and under the permanent schedule it stops entirely above 400 percent of that line. A raise, a strong freelance year, or a spouse’s bonus can cost more in premium than it adds in pay. That is the one part of this a household can see coming and plan around.