ACA Subsidies When You Are Self-Employed: How to Estimate Income

The number the Marketplace wants

The premium tax credit is based on modified adjusted gross income, usually shortened to MAGI, for everyone in your tax household. For most self-employed people, the starting point is net self-employment income: what the business brings in minus ordinary business expenses. That is the figure HealthCare.gov asks for when you list self-employment income, and it can be very different from your gross receipts or what lands in your bank account.

From there, a few things move the number:

• Additions that raise it. MAGI adds back tax-exempt interest, Social Security benefits that are not taxed and certain foreign income.
• Other household income. A spouse's wages, investment income, rental income and the income of dependents who are required to file a return all count.
• Adjustments that lower it. Half of your self-employment tax, contributions to a SEP-IRA, SIMPLE IRA or solo 401(k) and HSA contributions reduce adjusted gross income, and so the income used for the credit.

The self-employed health insurance deduction lowers it too, which creates a loop with the credit itself; more on that below. Whether a particular adjustment applies to you depends on your return. General information, not tax advice — confirm with your CPA based on your specific entity structure.

A simple way to estimate

1. Start with last year's return, and find net profit on Schedule C, Schedule F or your K-1.
2. Adjust for what you already know. A client you lost, a contract you signed, a rate increase, a new expense such as equipment or a hire.
3. Account for planned retirement contributions and add every other source of household income.
4. Pick a number you can explain. The Marketplace may ask for proof, such as a recent tax return or a profit and loss statement, if your estimate does not match the data it can see.
5. Write down how you got there. If the estimate is ever questioned, a one-page worksheet makes the answer easy.

If the business is new and has no track record, use signed contracts and a realistic monthly run rate, and plan to update often.

The 400 percent line for 2026 and 2027

The enhanced credits that applied from 2021 through 2025 expired, and as of late October 2026 Congress has not brought them back. For 2026 and 2027, the original rule applies: above 400 percent of the federal poverty level, there is no credit at all. Below the line, what you are expected to pay for the benchmark silver plan is capped as a share of income, topping out at 10.22 percent for 2027.

• 2026 coverage uses the 2025 poverty guidelines: $62,600 for one person and $128,600 for a family of four.
• 2027 coverage uses the 2026 guidelines: $63,840 for one, $86,560 for two, $109,280 for three and $132,000 for four.

For a self-employed person, that line is not just a number to compare against. It is a reason to plan. One good quarter can move you from a meaningful credit to none. The subsidy cliff guide works through examples, and you should check HealthCare.gov before you enroll in case the rules change late.

Lumpy income

Self-employed income rarely arrives evenly. A few common patterns:

• Seasonal businesses, such as landscaping, pool service or tourism. Estimate the whole year, not the busy season. The credit is annual.
• One or two large contracts. If a big job could land this year or slip into next, think about which year the payment will be received. For most small businesses on a cash basis, that is the year it counts.
• Selling equipment, a vehicle or the business. A taxable gain counts as income for the year.
• A slow start and a strong finish. Update the Marketplace as soon as you can see the year turning. The earlier you report, the more months the change is spread across.

Update during the year, not after it

You can change your income estimate whenever the picture changes. HealthCare.gov asks you to report changes within 30 days, and the advance credit is recalculated for the months left. If you are unsure, you can take less than the full advance credit each month and claim the rest when you file. Starting with the 2026 tax year there is no cap on repaying excess credit, so an estimate that is too low costs more than it used to. The guide to paying back the credit covers reconciliation on Form 8962.

The loop with the health insurance deduction

Self-employed people who take the credit run into a quirk. The self-employed health insurance deduction lowers your income, which can raise your credit, which lowers the premium you paid, which lowers the deduction. IRS Publication 974 explains how to resolve it, and tax software handles the math. You do not need to solve it to enroll, but your preparer needs your Form 1095-A. The self-employed deduction guide explains who qualifies. General information, not tax advice — confirm with your CPA based on your specific entity structure.

Planning near the line

If your estimate is a few thousand dollars from the line, small moves matter. Retirement contributions are the most common one. SEP-IRA contributions for a year can generally be made up to the tax filing deadline, including extensions, which gives you a way to adjust after you see the final numbers. Timing a large sale or a Roth conversion into a different year can also matter. General information, not tax advice — confirm with your CPA based on your specific entity structure.

When a private plan makes more sense

If your income is clearly above the line, a Marketplace plan costs full price. That does not make it the wrong choice. It accepts everyone and covers pre-existing conditions, which is the right answer for anyone with a significant health condition or a pregnancy on the horizon.

For a healthy self-employed person over the line, though, a private, medically underwritten plan is worth pricing. It is priced on age, zip code and health rather than income, so a record year does not change what you pay and there is nothing to reconcile. If approved, it can also start on the first of any month. Approval depends on your health answers and benefits vary by plan, so I go through the plan documents with you before you apply.

Price both if:

• Your income is above the line or close to it.
• Your income swings enough that a repayment bill would hurt.
• You want to compare networks, since many Marketplace plans in Florida and elsewhere are HMOs or EPOs.

Where I fit

I quote the Marketplace with a credit based on an estimate we build together, next to private plans priced on your health, by phone or video in 31 states, including Florida and North Carolina. Start a quote or call (786) 218-2384. For more, see the freelancer guide and private vs Marketplace for the self-employed.