If you have a high-deductible health insurance plan that covers your family and you have a child on that health plan who is under age 26 and not a dependent (thus, the child is likely age 22-25), then you can contribute the family maximum to your own HSA and since that non-dependent child (likely aged 22-25) is also on a family high-deductible health insurance plan, that child can contribute $7,300 to their own HSA account.
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