For most sellers under 65, health insurance after selling a business means comparing coverage deadlines and sale-year income before Apollon Wealth Management or anyone else picks a plan. A rule of thumb: keep COBRA available for the 60-day election window, but price the full year, because marketplace credits use coverage-year household MAGI. The ordinary decision is a small one: a termination notice lands in the mail, and you have to pick between a COBRA form, a spouse's open enrollment and a marketplace application in the same few weeks. In client reviews, Apollon Wealth Management usually sees owners focus on the monthly premium and forget that the sale itself changes what every option costs. This article takes the choices one step at a time, in the order the deadlines arrive.
By Marcus Thompson, CFA — Wealth Manager | Reviewed by Hiroshi Tanaka, CFPMarcus builds diversified portfolios for high-net-worth clients, with deep expertise in asset allocation and risk management.
Owners price the sale-year premium off last year's wages. Add the gain first, because a $1,820,000 gain changes every marketplace estimate.
CPA and Tax Director, Apollon Wealth Management
Elect COBRA inside the window if there's any doubt. Paying $1,000 per month for a few months costs far less than an uncovered claim.
CFP® and Lead Advisor, Apollon Wealth Management
Step 1: What date does your business health coverage actually stop?
Your coverage ends on the date written in the benefits termination notice, and that date may be your last workday, the end of the month or the closing date. The buyer, the seller and the plan administrator can each use a different one.
Gather the termination notice first. Then write three dates on one calendar: the group-plan end date, the COBRA election deadline and the spouse-plan enrollment deadline.
The slip at this step is treating the closing date as the coverage end date without reading the notice. If the plan actually ends a few days earlier, you can have a gap with a medical claim sitting in it.
Step 3: Gather the numbers before comparing monthly premiums
Premiums alone don't tell you which plan is cheaper, because the sale changes the income that marketplace pricing depends on. So gather the paperwork first, and know where each piece comes from.
The COBRA election notice comes from the plan administrator. The spouse-plan summary and the payroll deduction amount come from your spouse's HR department. Marketplace estimates come from the application itself.
For income, pull the draft purchase agreement or letter of intent, last year's return, this year's profit-and-loss statement, brokerage 1099 information and any consulting payments you expect from the buyer. Together they let you estimate household MAGI for the coverage year.
Include tax-exempt interest and the sale gain in that estimate. Using wages alone is the slip here, and it can make advance premium credits far too large.
Step 4: How can a sale change marketplace coverage costs?
A sale can sharply raise marketplace costs. Premium tax credits depend on the household's modified adjusted gross income in the year the coverage runs, and that figure includes capital gains and tax-exempt interest. Advance credits are reconciled on IRS Form 8962 when you file.
A hypothetical household, Raj and Sharon, 47 and 45, with three children under 15, shows how this plays out. Raj co-owns an IT managed-services firm with an unrelated 50/50 partner, and his $2,000,000 buyout ends his job-based family coverage on June 30. For illustration, assume their ordinary income before the transaction is $180,000 and the taxable gain is $1,820,000.
Their estimated marketplace MAGI is $180,000 + $1,820,000 = $2,000,000, before other income. At that level they don't count on advance marketplace credits for the sale year. Their COBRA notice shows $1,000 per month, so six months costs $1,000 × 6 = $6,000.
They pay that $6,000 from their HSA for qualified COBRA premiums, so no new cash leaves the household. Then they revisit marketplace coverage for the next calendar year, when projected income is $120,000. Our calculator can run the same kind of income estimate with your own figures.
The sale year is a poor marketplace assumption even though next year's ongoing income is much lower. Marketplace pricing follows the year the coverage is in, not the year you'd like it to follow.
Two things get confused here. Paying COBRA from an HSA uses dollars that already had a tax advantage. Moving sale income into a later year, say through an installment structure, changes timing and may not reduce the total tax cost. Business sale tax planning is where that second question gets answered with real numbers.
And the slip: applying with last year's income and never updating a changed estimate. It can mean repaying credits when Form 8962 is filed.
The sale-year income trap
Deduction versus deferral
If a taxable sale gain will materially raise this year's household MAGI, don't assume marketplace advance credits are available. Preserve the COBRA election right while you price the other coverage choices.
Step 5 task list: who does what, and when
Nobody in this process will chase you, so the household has to own the calendar. The tax preparer matters more than owners expect, because the income estimate drives one of the three choices.
| Task | Who does it | Document | When |
|---|---|---|---|
| Confirm coverage end | Plan administrator | Termination notice | Before June 30 |
| Price COBRA | Former plan administrator | Election notice | Within 60 days |
| Price spouse plan | Spouse and HR | Plan summary | Plan deadline |
| Estimate sale-year MAGI | Household and tax preparer | Sale projection | Before enrollment |
| Check age-65 effect | Household and tax preparer | Two prior returns | Age 63+ |
Step 6: Can HSA money cover the bridge?
Yes. HSA funds can pay COBRA premiums tax-free when the distribution covers qualified medical coverage, so the account can fund a bridge. List the available HSA balance next to the total COBRA premium and see how many months it covers. Treat it as a bill-paying account for this stretch, not an investment account.
Step 8: What changes if you sell at 63 or 64?
A sale at 63 or 64 can raise your Medicare Part B premium at 65, because Medicare looks back two years at income. Medicare's 2026 premiums use 2024 MAGI, so if the sale year becomes your lookback year, the gain counts.
As an illustration with the 2026 figures: the standard Part B premium is $202.90 per month, while the total reaches $689.90 per month at joint MAGI of $750,000 and above. That gap is $487.00 per month ($689.90 − $202.90), or $5,844 per year ($487.00 × 12).
Don't choose coverage solely to avoid that surcharge. Compare the premium increase with the sale terms, the tax cost and the value of waiting. For what to do with the proceeds themselves, see Wealth after a business sale.
Step 9: Bring the coverage calendar to Apollon Wealth Management
Bring the COBRA notice, spouse-plan materials, HSA balance, sale-income estimate and your last two filed returns. Apollon Wealth Management can put the deadlines beside the income estimate and name which decision comes first. Confirm eligibility and tax reporting with the plan, the marketplace and your tax professional too; this page covers the gap before Medicare, not supplements, Part D or a disputed termination.
The 60 days on your COBRA notice is the time you have to decide, not the amount of coverage you get.
Your questions about health insurance after selling a business, answered
What should I verify on a COBRA election notice before I return it?
Check the coverage end date, the election deadline, the monthly premium and who is covered. Confirm the first payment due date too. Compare the premium to the group cost you remember, since it can run up to 102 percent. Ask the plan administrator about anything that doesn't match.
What happens if I elect COBRA on day 59 after my company plan ends?
If your election falls inside the election period, coverage is generally retroactive to the date the group plan ended, once you pay the required premiums. The risk is the deadline itself. Missing it ends the option, so confirm the exact date on your notice and don't rely on a rough 60-day count.
My spouse's employer offers coverage after my $2 million sale, should I use it?
Often it deserves a serious look, because spouse-plan premiums don't depend on your sale-year income and marketplace credits may be unavailable. Compare the payroll deduction, deductible and network with COBRA. Check the plan's special enrollment deadline, since losing your coverage usually opens a short window.
Can my HSA pay COBRA premiums while I compare other plans?
Yes. HSA money can generally pay COBRA premiums tax-free because they count as qualified coverage. List your balance next to the total premium to see how many months it covers. Keep records of each payment, and confirm the details with your tax preparer.
Can a business sale at 63 raise my Medicare Part B premium at 65?
It can. Medicare uses income from two years earlier, so a sale at 63 may land in the lookback year for the premium at 65. The 2026 total Part B premium runs from $202.90 to $689.90 per month depending on income. Check this early with your tax preparer.
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This content is general information only and does not constitute investment, tax or legal advice tailored to your circumstances. Investing involves risk, including possible loss of principal. Past performance is no guarantee of future results. Consult a qualified professional before making any financial or legal decision.