Your Adult Child Has a Chronic Health Condition and Needs Your Help. What Retirees Should Know

A couple turning 64 this year with $2.1 million saved is, by most measures, ready to retire. But the math changes if you add a 24-year-old daughter with a chronic mental health condition who needs ongoing therapy, medication management, and the occasional residential stay.

Variations of this scenario have shown up on Bogleheads and r/personalfinance. There are a number of parents in their early 60s who can technically afford to retire, but who are also the financial backbone for an adult child whose illness limits employment and insurance access.

What the Numbers Look Like on Paper

• Household: Married filing jointly, both 64, retiring this year
• Investable assets: $2.1 million across taxable, tax-deferred, and Roth accounts
• Core retirement spending: assumed in the $90,000–$110,000 annual range, pre-tax
• Daughter’s care: $36,000/year through roughly age 30
• What’s at stake: How a six-year support commitment reshapes a 30-year retirement

The reason this matters is sequence risk. A dollar spent in the first decade of retirement, before compounding has done its work, costs far more than the same dollar spent in year 20. Layering family caregiving on top of normal retirement spending in years one through six is when the portfolio is most fragile.

On $2.1 million, the daughter’s care alone represents an extra 1.7% drawn from the portfolio every year. Stack that on top of a baseline 4% draw for the parents’ own living expenses and the household’s combined withdrawal rate is well above the baseline during the support window. That is above what most planners consider sustainable across a 30-year horizon, even with the 10-year Treasury yielding almost 5% and offering a real income floor on the fixed-income sleeve.

The good news in this scenario: This elevated draw has a built-in end date. By age 70, the support obligation rolls off, Social Security kicks in (assuming delayed claiming), and the withdrawal rate resets toward something durable. The job is to bridge those six years without permanently impairing the portfolio.

Three Levers Worth Pulling

1. Capture the medical-expense deduction by claiming the daughter as a qualifying relative. If her gross income falls below the IRS qualifying-relative threshold and the parents provide more than half her support, she can be claimed on their return. That unlocks the ability to deduct her unreimbursed medical expenses (alongside their own) to the extent total medical costs exceed 7.5% of adjusted gross income (AGI). On a 2026 standard deduction of $32,200 for married filing jointly, the family would need to itemize, which typically requires medical, state and local taxes, and mortgage interest combined to clear that bar. With $36,000 of qualifying care, it often does.

2. Consider an ABLE account if the condition meets the disability threshold. If the daughter’s condition was documented before age 26 and meets the Social Security definition of disability, she qualifies for an Achieving a Better Life Experience (ABLE) account. Contributions grow tax-free, withdrawals for qualified disability expenses (including mental health treatment) are tax-free, and the account does not jeopardize means-tested benefits like Medicaid up to the asset cap. For a family planning permanent support, this is a meaningful structural advantage.

3. Pull the $36,000 from the right account. The instinct is to drain taxable first. The better move is usually to fill up the 12% bracket (income up to $100,800 for MFJ in 2026) with traditional IRA withdrawals, harvest long-term capital gains at the 0% rate where possible, and leave the Roth alone for late-retirement healthcare and legacy. Roth conversions during these pre-Social-Security, pre-RMD years are also more valuable than they look, because the parents will likely never see a lower marginal rate again.

What to Do First

Run the numbers on a withdrawal plan that explicitly carves out the daughter’s care as a discrete six-year liability. Tools like the one below let you stress-test how a temporarily elevated draw interacts with the rest of the portfolio.

Then confirm two things this year: whether the daughter qualifies as a dependent for tax purposes, and whether her diagnosis supports opening an ABLE account. Those two determinations alone can shift thousands of dollars a year in after-tax cost. The common mistake is treating the $36,000 as an undifferentiated line item in the budget. It is a deductible, structurable, plannable expense, and treating it that way is what keeps the rest of the retirement plan intact.