How much does Obamacare cost? The real math, no runaround

By Omar Mendoza, licensed insurance agent · August 28, 2026 · 7 min read

It's the first question people ask me and the worst-answered one online. You'll see pages saying “from $0 a month” and others quoting $600. Both can be true, because Obamacare doesn't have a price: it has a formula. Here it is in full, so you can work out your own number before anyone calls you.

The short answer: nobody can quote you a price without four things

If someone throws a figure at you without asking anything, they're making it up. Working out your number takes four things:

• Your age. The base price rises with age. The law lets a 64-year-old be charged up to three times what a 21-year-old pays.
• Your ZIP code. Not the state — the county. Two neighboring counties can have very different prices because the insurers competing there change.
• How many people are in your tax household and how many will be covered.
• Your estimated income for next year. This is the one that changes everything, and the one most people get wrong.

If you smoke there's a fifth: tobacco use can add up to 50%, and that surcharge is not covered by any subsidy.

What almost nobody explains: you don't pay the plan's price

Here's the point that turns everything around. When you qualify for help, the government doesn't give you a discount off the plan's price. It does something different: it decides how much you can afford based on your income, and pays the rest.

That percentage applies to one specific plan: the second-cheapest Silver plan in your area, called the benchmark plan. Your subsidy is calculated from that one, and then you can spend it on whichever plan you want.

That leads to something that surprises a lot of people: if you pick a plan cheaper than the benchmark, you can end up paying very little, sometimes almost nothing. The subsidy is a fixed dollar amount; if the plan costs less, the difference is yours. In Florida, 34% of enrollees end up paying less than $10 a month.

The table that decides whether you get help

Everything revolves around the federal poverty level. These are the figures in force that will be used for 2027 coverage, for the 48 contiguous states:

For each additional person in the household, add $5,680 to the 100% column.

The 400% cliff: one dollar can cost you thousands

Look at the last column. That figure isn't a staircase, it's a cliff. One dollar below it, you get help. One dollar above it, you lose the entire subsidy and pay the plan's full price.

Between 2021 and 2025 this cliff didn't exist: enhanced subsidies had smoothed it out. They expired on January 1, 2026 and the cliff came back. The House passed an extension in January 2026 and the Senate hasn't voted on it; until that changes, the 400% cutoff stands.

That's why I push so hard on the income estimate. A family of four projecting $131,000 gets help; if they end the year at $133,000, they have to pay the whole subsidy back at tax time. And since tax year 2026 there is no longer any cap on what they can claw back.

And if you earn little, there's a catch too

Here Florida and Georgia have a problem other states don't. Neither fully expanded Medicaid, so if your income falls below 100% of that table, you don't qualify for a Marketplace subsidy and Medicaid for adults without minor children is very limited.

It's what's known as the coverage gap: you earn too little for the subsidy and too much for Medicaid. It sounds absurd, and it is. If your income is near that line, don't drop below it without talking to someone first: there are legitimate ways of counting household income that change the outcome.

What else moves your price

• The metal level. Bronze pays less monthly and more when you use it; Silver is the reverse. And if you earn under 250% of the poverty level, Silver plans carry extra discounts on deductibles and copays that you lose if you pick Bronze.
• Who goes on the policy. Children under 21 are charged a flat rate, and from the fourth child under 21 onward there's no extra charge.
• The network. An HMO usually costs less than a PPO, in exchange for less freedom to choose your doctor.

Why the price you see on HealthCare.gov isn't your price

When you browse plans without entering your income, the site shows you the full price, the one for someone getting no help at all. Plenty of people see $700 a month, panic and close the page.

That number is almost never what they'll pay. Nine out of ten enrollees get help; in Georgia it's 89% and in Florida over 95%. The price that matters shows up after you enter your income, and it's usually a different world.

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