Should You Tell Siblings They May Have a Role in Their Disabled Brother or Sister’s Future?

When parents care for a child with a disability, one question can become harder to ignore as the years pass: What happens when we are no longer able to help? Brothers and sisters may eventually become part of the answer, but assuming they will take over without discussing it can create resentment, confusion, and serious planning gaps. Future planning for disabled siblings works best when families begin conversations early rather than waiting for illness, aging, or another crisis. The goal should not be to hand someone an obligation they never agreed to accept. Instead, families can create a realistic plan that respects the disabled person’s wishes while giving every sibling a genuine voice.

Yes, Siblings Should Know What The Future Could Involve

Keeping siblings in the dark may seem like a way to protect them, particularly when they are young adults building careers and families of their own. However, disability advocates encourage families to plan before aging parents can no longer provide the support they currently offer.

The Arc has long estimated that 600,000 to 700,000 U.S. families include an adult with an intellectual or developmental disability living with aging relatives without a future plan in place, an estimate the organization cited when launching its Center for Future Planning in 2014.

Future planning for disabled siblings gives brothers and sisters time to understand what responsibilities might eventually arise instead of discovering them during an emergency. A conversation at age 25 or 35 can feel very different from an unexpected phone call after a parent becomes seriously ill.

There is evidence siblings actually want these conversations. In a study of parents and adult siblings of people with intellectual and developmental disabilities, both groups described barriers to future planning, but siblings specifically reported wanting more communication within their families about those plans.

A Future Role Does Not Automatically Mean Full-Time Caregiving

One of the biggest misconceptions is that helping a disabled sibling eventually means inviting that person to move into your home. In reality, responsibilities can be divided among relatives, professionals, service providers, trustees, and other members of a support network. One sibling might attend important meetings, another might manage family communication, while a professional trustee handles money or trust administration.

AARP notes that siblings can maintain close relationships even when a disabled brother or sister lives in supported housing rather than with family. Making those distinctions early can make future planning for disabled siblings feel manageable instead of overwhelming.

A sibling’s future role could potentially include:

• Relationship role: Regular visits, holidays, phone calls and making sure their sibling remains connected to family.
• Advocacy role: Attending care meetings, communicating with providers or helping navigate services.
• Emergency role: Being the person called if housing falls through, a caregiver quits or there’s a hospitalization.
• Financial role: Serving as trustee, representative payee or helping coordinate finances—but only when legally appointed/authorized where required.
• Decision-support role: Helping their sibling understand choices or participating in whatever supported-decision-making structure is appropriate.
• Legal role: Potentially serving under a power of attorney or another legally recognized arrangement, depending on the person’s capacity, wishes and state law.
• Housing-support role: Helping evaluate supported living or residential options without necessarily providing housing personally.
• Caregiving role: Providing hands-on support—but only if that’s actually what everyone agrees upon.

The Arc’s current sibling planning guide asks siblings to think about exactly these kinds of questions: what daily help the person needs, where they want to live, who handles appointments, who helps with decisions, what benefits and ABLE accounts exist, and how the person will maintain community connections.

Ask What Each Sibling Is Actually Willing To Do

Parents should avoid announcing, “You’ll take care of your brother when we’re gone,” as though the decision has already been made. Instead, ask specific questions about what each sibling realistically could and would be willing to handle, including medical advocacy, finances, regular visits, transportation, or emergency coordination.

Someone raising three children or living 1,500 miles away may genuinely care about a sibling while being unable to provide daily support. MassMutual notes that caregiving can affect a sibling’s career and income if responsibilities require reduced work hours or a more flexible job. Honest answers now are far more useful than promises made out of guilt that may be impossible to keep later.

Who Does What? Planning Table

The Disabled Sibling Must Have A Voice Too

Future planning should not become a private negotiation between parents and nondisabled siblings about someone else’s life. The person with the disability should participate as fully as possible, using appropriate communication assistance or other supports when necessary. The Arc emphasizes person-centered planning, including preferences about housing, employment or daily activities, relationships, routines, and decision-making.

For example, an adult may prefer supported housing near friends rather than moving across the country to live with a sibling after the parents die. Good future planning for disabled siblings therefore begins with asking what the person receiving support wants, not simply what is easiest for everyone else.

Put Important Information In Writing Before A Crisis

Verbal instructions such as “Your sister knows what to do” are not a substitute for an organized plan. Families can create a future plan or letter of intent describing routines, communication needs, important relationships, health information, providers, preferences, benefits, financial arrangements, and other practical details.

The Arc recommends reviewing and updating a future plan at least annually because circumstances, services, relationships, and personal goals can change. Families should also discuss appropriate legal and financial planning with qualified professionals, since trusts, powers of attorney, supported decision-making arrangements, and guardianship rules can have different consequences.

Fidelity’s 2026 guidance similarly recommends putting plans in writing and consulting professionals experienced in special-needs planning rather than relying on informal family assumptions. Parents should also tell siblings what financial structures already exist. That may include SSI or Social Security benefits, an ABLE account, a special needs trust, life insurance, or other assets intended for the disabled family member. Simply leaving money directly to a disabled adult without understanding benefit rules can create unintended consequences, which is why families may need an attorney experienced in disability and special-needs planning.

What Would Your Sibling Need to Know Tomorrow?

If the parents were suddenly hospitalized, could the sibling answer:

• What medications are taken and when?
• Who are the doctors?
• What benefits does the person receive?
• Where are the benefit/account records?
• Is there an ABLE account or trust?
• Who manages money now?
• What food, sensory or communication needs matter?
• What routines are especially important?
• Who are the person’s closest friends?
• Where does the person want to live?
• Who provides transportation?
• Which service providers should be called?
• Who actually has legal authority to make which decisions?

Start The Conversation Before Anyone Needs An Emergency Plan

Families do not need every answer before they begin talking, and the first conversation does not have to settle the next 30 years. Future planning for disabled siblings is an ongoing process that should change as the disabled person’s goals, parents’ circumstances, siblings’ lives, and available support services evolve. The healthiest approach combines transparency with choice: tell siblings what may be needed, listen carefully to their limits, and never confuse love with unlimited responsibility. A thoughtful plan can preserve sibling relationships while creating a broader support network that does not depend entirely on one person.

If your family faced this situation, would you want to know years in advance what role might be expected of you, or could that knowledge feel like an unfair burden? Share your perspective in the comments.

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Evan Morgan

Evan Morgan has been a full-time freelance writer and editor for 10+ years. When not working, he enjoys catching the latest true crime documentary or getting lost in a good book.