Open Enrollment 2027: How an Income Change Can Raise (or Lower) Your Premium

Open Enrollment for 2027 coverage runs November 1, 2026 to January 15, 2027 — the same window used in recent years, with a January deadline and no February start date. And this year, one number matters more than ever: your income. A change in what you earn can shrink your subsidy, push you over the cliff, and spike your premium — or, handled right, do the opposite. Here is exactly how it works and what to do about it.

2027 Open Enrollment Dates at a Glance

Florida uses the federal marketplace at HealthCare.gov, so these dates apply statewide — including Coral Springs, across Florida, and the rest of Broward and Miami-Dade. A few state-run exchanges set slightly different deadlines, but none run past December 31.

How Your Income Sets Your Premium

Most people do not pay the full “sticker” price of an ACA plan. Instead, the government pays part of it through a premium tax credit, and you pay the rest. The size of that credit is decided almost entirely by your income — specifically your Modified Adjusted Gross Income (MAGI) compared to the Federal Poverty Level (FPL) for your household size.

The rule is simple in direction: the lower your income relative to the poverty level, the larger your credit and the smaller your monthly premium. As your income rises, your credit shrinks and your share of the premium climbs. Two households buying the exact same plan in the same zip code can pay wildly different amounts purely because of income.

Why an Income Change Moves Your Premium

Because your subsidy is tied to income, any change during the year can move your premium — in either direction. Pick up a bigger contract, take a second job, or have a spouse start working, and your credit shrinks, so your net premium rises. Lose hours, close a slow quarter, or drop a client, and your credit can grow, lowering what you pay.

Here is the part people miss: the marketplace does not know your income changed unless you tell it. You are expected to report income changes within about 30 days. When you do, your subsidy re-adjusts going forward. When you do not, the gap gets settled at tax time on Form 8962 — and if you were paid a bigger subsidy than your final income allowed, you repay the difference when you file. Reporting changes as they happen is how you avoid a surprise bill in April.

An honest, good-faith income estimate that turns out a little off is completely normal and expected. The trouble only comes from never updating it — that is what creates the tax-time repayment.

The 400% Cliff Is Back — and It Punishes Small Raises

From 2021 through 2025, a temporary rule removed the old “subsidy cliff,” capping what anyone paid at 8.5% of income no matter how much they earned. That enhanced help expired after 2025. For 2026 and 2027, the cliff is back: earn even one dollar over 400% of the Federal Poverty Level and you can lose your entire premium tax credit.

That is why an income change matters so much right now. A modest raise that pushes you just over the line does not trim your subsidy a little — it can erase it completely. KFF estimated that a 60-year-old couple earning $85,000 (just above the cliff) could see their yearly premium jump by more than $22,000 once the enhanced credits lapse. The same coverage, a small income difference, a massive price gap.

Why 2027 Premiums Are Higher Across the Board

Even if your income did not change at all, most enrollees will see higher prices for 2027, for two reasons stacking on top of each other. First, the enhanced premium tax credits that boosted subsidies for four years expired at the end of 2025, so the baseline help is smaller. Second, insurers filed some of their steepest rate increases in years — a median around 18%, the largest since 2018.

Put together, KFF estimated the average marketplace enrollee’s net premium payment more than doubled heading into 2026, from roughly $888 to about $1,904 a year. That environment carries into 2027 unless Congress restores the enhanced credits. The takeaway is not to panic — it is to shop. Auto-renewing the same plan is how people massively overpay in a year like this.

What to Do During Open Enrollment

• Update your income estimate. Base it on this year’s reality, not last year’s. This single number drives your whole subsidy.
• Do not auto-renew blindly. Plans and prices reshuffle every year. The plan that was best in 2026 may be a poor deal in 2027.
• Watch the cliff. If you are near 400% FPL, get help mapping your income before you lock in.
• Check your doctors and drugs. Networks and formularies change; confirm yours are still covered.
• Enroll by December 15, 2026. December 15 is the cutoff for a January 1 start.

Whether you are an individual, a family, a 1099 or self-employed earner, or a small business owner, the same principle applies: the right plan depends on your income, and the deadline is real. We do this every day and it costs you nothing.

Open Enrollment & Income FAQ

When is Open Enrollment for 2027 health insurance?

November 1, 2026 through January 15, 2027 in Florida and most states, with coverage effective January 1, 2027. It runs the full length used in recent years — closing January 15, 2027, with a February 1 start for plans selected after December 15.

How does my income affect my ACA premium?

Your premium tax credit is based on your MAGI compared to the Federal Poverty Level. Lower income means a bigger credit and lower premium; higher income means a smaller credit; above 400% of poverty you can lose the credit entirely.

What happens if my income changes during the year?

Report it to the marketplace within about 30 days. Your subsidy adjusts going forward, which prevents a repayment surprise when the IRS reconciles your credit on Form 8962 at tax time.

Are ACA premiums going up for 2027?

For most people, yes. The enhanced subsidies expired after 2025 and insurers filed large rate increases. KFF estimated the average enrollee’s net payment more than doubled for 2026. Shopping every plan is how you fight back on price.

Can a small raise really increase my premium a lot?

Yes. Crossing 400% of the poverty level can wipe out your entire subsidy, so a small raise can cost thousands. Planning your income estimate with an advisor helps you avoid the cliff.

This article is general information, not tax or legal advice. Your exact subsidy depends on your household, income, and location — have us run your real numbers at no cost.