Blog / Health and ACA

Why did my Marketplace premium go up?

Four causes, and only one of them is about you. Here is how to tell which applies and what to do about it.

Updated August 17, 2026 · 2 min read

A Marketplace premium can rise sharply between one January and the next without anything about your household changing. There are four causes and they are worth telling apart, because the fix is different for each.

1. The benchmark plan changed

Your premium tax credit is calculated against the second lowest cost silver plan in your area. If a cheaper silver plan enters the market, the benchmark falls, your credit falls with it, and what you pay rises.

This is the most common cause and the least intuitive, because nothing about you changed. The fix is to re shop: if the benchmark moved, the plan that is best value probably moved too.

2. Your income estimate changed

If you reported higher income for the new year, or the Marketplace updated your estimate from tax data, your credit shrinks. Check what income figure your account is currently using. People are sometimes surprised to find it is not what they intended.

3. Rates rose across the market

Insurers file new rates every year and they generally rise. This affects everyone with that plan, not you specifically.

4. The subsidy rules themselves changed

This is precisely the kind of thing that changes between when something is written and when it is read, so we deliberately do not publish a number here.

How to work out which one hit you

1. Log in and check the income figure on your account. Wrong income is the fastest thing to fix.
2. Compare your plan's full premium, before the credit, against last year. If that rose a lot, it is a rate increase.
3. Compare your credit amount against last year. If the credit fell while your income stayed flat, it is the benchmark or a rules change.
4. Re shop every plan available to you before accepting the renewal.

What to actually do

• Update your income if it is wrong, immediately, since it also prevents a tax surprise.
• Re shop during open enrollment rather than auto renewing. See how renewal works.
• If you qualify for cost sharing reductions, check silver plans specifically.
• If the new cost is genuinely unaffordable, look at a different metal level before dropping coverage entirely. A bronze plan with a low premium is better than nothing, particularly given the out of pocket maximum still caps your worst year.

See how the credit is calculated and what drives your cost.