Financial caregiving: becoming a fiduciary for a family member

Millions of adults manage money for someone else — usually an aging parent — and most stumble into it with no idea that the role has a legal name (fiduciary), legal duties, and legal traps. Signing Mom's checks 'because someone had to' works fine until a sibling questions a withdrawal, a bank freezes an account, or Medicaid audits five years of statements. Here's the toolkit, from lightest to heaviest, and how to use it without personal risk.

The tools, lightest to heaviest

• Durable financial power of attorney (POA): the person (while still competent) names you as agent to handle finances. 'Durable' means it survives incapacity — the entire point. Cost: a few hundred dollars with an attorney. This is the tool every family should set up early, and it becomes impossible to create once capacity is gone.
• Representative payee: a Social Security appointment (separate from any POA — the SSA doesn't honor POAs) letting you receive and manage someone's Social Security benefits for their needs. The VA has an equivalent (VA fiduciary). Requires an application and annual accounting for some payees.
• Trustee: if assets sit in a revocable living trust, a named successor trustee takes over management on incapacity, often more smoothly than a POA — banks respect trusts.
• Joint account (use with caution): easy but dangerous — the money legally becomes half yours, exposed to your creditors and divorce, and at death it passes to you alone, overriding the will and often igniting sibling war. Prefer POA or convenience-signer arrangements.
• Guardianship/conservatorship: the court option of last resort when no POA exists and capacity is gone. Expensive ($3,000–10,000+ to establish), slow, public, and supervised by annual court accountings. This is what the cheap POA prevents.

Your duties once you're in the job

A fiduciary manages someone else's money for THEIR benefit, full stop. The four core duties, straight from the CFPB's guides for lay fiduciaries: act only in their interest, manage money carefully, keep their money completely separate from yours, and keep good records. In practice that means never commingling funds, never 'borrowing,' never gifting yourself or others without explicit authority in the document, and being able to show where every dollar went.

1. Take the POA to each bank and get it registered; some institutions want their own forms or a fresh certification. Do this before the crisis, not during.
2. Retitle nothing to yourself. Sign everything as 'Jane Doe, as agent/POA for Mary Doe' — never your bare signature.
3. Open a dedicated checking account for their money if needed; run every caregiving expense through it, never through your own cards.
4. Keep a simple ledger plus receipts for anything over trivial amounts. Free spreadsheet, ten minutes a month, priceless in a dispute.
5. Send siblings a brief quarterly summary even if nobody asked. Transparency offered is trust; transparency demanded is a fight.
6. If you're the rep payee, spend benefits only on the beneficiary's current needs, save any excess in their name, and complete the SSA accounting when asked.

Protect yourself, too

• You can be paid: many POA documents allow reasonable compensation for the agent, and a family caregiving agreement (in writing, at market rates) can pay you for care work — often smart for Medicaid planning versus informal cash that looks like gifts.
• Your own money stays out: paying their bills from your account creates both a mess and a quiet slide into unplanned subsidy. Their money first, always documented.
• Watch for exploitation from others — new 'friends,' sudden beneficiary changes, romance scams, and unscrupulous relatives. As fiduciary you're the first line of defense, and banks will talk to a registered POA about suspicious activity.
• Know the boundaries of your document: some powers (changing beneficiaries, making gifts, creating trusts) exist only if expressly granted. When in doubt, an hour of elder law attorney time beats guessing.

The toolkit at a glance

Sequencing the setup

The practical order for most families: raise the topic during a calm visit in the parent's late sixties or early seventies, get the durable POA and healthcare documents signed in one attorney appointment, register the POA with each bank within the month, and apply for representative payee status only when Social Security management is actually needed. The whole sequence costs a few hundred dollars and one afternoon — and every element of it becomes unavailable, expensive, or court-supervised the day capacity is gone. If your parent resists, reframe it: the POA doesn't take anything away today; it just names who they trust, in writing, while the choice is still theirs to make.

The bottom line

Financial caregiving is a legal role, not a favor. Get the durable POA signed while the signing is possible, register it, become rep payee if Social Security is in the picture, and then run the job like the fiduciary you now are: their money separate, every dollar documented, siblings informed, yourself protected. The paperwork feels bureaucratic right up until the day it's the only thing standing between your family and a courtroom.