The contractor, care provider or facility has sent a contract and everyone has forwarded it to you. That does not make you the customer. It does not prove that you may sign for Mom. It certainly does not mean you should promise to pay from your own account.
Your job is to make the paperwork answer four separate questions: Who is receiving the service? Who is entering the agreement? Who has authority to sign? Whose money must pay the bill?
Do that before you sign, not after a sibling asks why your name appears beside a balance.
Start with the power of attorney, not the signature box
Find the complete financial power of attorney, including every attachment and amendment. A health care power of attorney is not automatically authority to enter a financial contract. A document that names you as an alternate may not let you act while the first agent is still serving. A document may also delay your authority until a stated event occurs.
Read for the subject of the proposed contract. Look for authority involving Mom’s property, household services, personal care, housing or other relevant business. Then check for limits, required approvals, co-agents and instructions from Mom. Missouri law requires an agent who acts to follow the document and Mom’s instructions. It also requires the agent to act in Mom’s interest and identify the agent role clearly.
If the document does not clearly cover the transaction, stop. Do not solve an authority problem by squeezing your name into the vendor’s form. Ask a Missouri lawyer what the document permits. The site’s Local help page gives you a place to begin looking.
Make the contract name the right customer
Read every place that uses customer, client, resident, responsible party, account holder or purchaser. Those labels may carry different duties. The person receiving care might be Mom, while the person promising payment might be whoever signs.
Ask the company to identify Mom as the customer or service recipient and to identify you only as her agent under power of attorney. Do not rely on a salesperson’s explanation that the form is standard or that a label does not matter. If the explanation changes what the printed words appear to require, ask for the contract to be corrected.
Check the opening paragraph, signature page, payment authorization and every addendum. A clean signature block cannot repair a separate clause that calls you a guarantor or makes the responsible party personally liable.
Separate Mom’s promise from your promise
Search the contract for words such as guarantee, jointly, individually, responsible party, collection, indemnify and payment obligation. Also check any credit application or automatic-payment form attached to it.
If the company expects you to guarantee payment, treat that as a new family decision. It is not clerical paperwork and it is not part of the ordinary labor of helping Mom. Ask why a guarantee is required, what obligations it covers, when it ends and whether the company will contract with Mom through her agent without it.
Do not put your card or bank account on the form merely because you are holding the pen. Missouri law calls for an agent to keep the principal’s property and accounts separate. The federal consumer guide for people managing another person’s money likewise emphasizes separation and complete records. You can review the public materials behind this guide on the Sources page.
Use a signature that shows your role
The signature should make clear that you are acting for Mom, not contracting in your individual capacity. Ask the company how it wants the principal and agent shown, then confirm that the format matches the power of attorney and does not add a personal guarantee.
A useful signature block identifies Mom as the principal and you as agent under power of attorney. Do not simply sign Mom’s name. Do not sign only your own name beneath a label that says customer. Do not accept a form that leaves your capacity to be explained later.
If the company requires a copy of the power of attorney, record exactly what you provided. Keep the transmission note or upload confirmation with the contract. If you are uncomfortable sending unrelated pages or sensitive information, ask whether the company will accept the complete document through a secure method or review what it needs with its own counsel.
Turn the quote into contract line items
Put the quote beside the final agreement. Match the provider name, service address, work description, materials, service frequency, start conditions and cancellation terms. Mark every item that appears in one document but not the other.
Then ask who must approve added work. A useful change-order clause says that extra work requires written approval from the authorized person before it begins. It should not let a worker obtain approval from whichever relative happens to answer the door.
For recurring services, check how the company may change the service level or charges, how notice will be delivered and how you may decline or end the service. For home work, check permits, cleanup, damage responsibility, completion standards and which product or labor warranties are actually included. A warranty mentioned in a quote should appear in the signed papers or in an attached warranty document.
Assign the paperwork after signing
The contract creates work beyond the first signature. Name one person for each line item: receive notices, approve changes, inspect the work, save invoices, submit warranty claims, cancel automatic payments and close the agreement.
That person does not have to be you. Authority to sign does not make you the permanent scheduler, inspector, bookkeeper and complaint desk.
Keep one working file containing the power of attorney used, the final signed contract, all addenda, the quote, proof of any required deposit from Mom’s funds, invoices, approvals, service notes, warranty papers and cancellation instructions. Record where the originals are kept and who can reach them. The Start here page can help you turn those documents into a family ledger instead of another private pile on your desk.
Send the family a decision, not a document dump
Your group-text summary can be short: Mom is the customer. You are signing only as her agent. Her account pays. No personal guarantee is included. Added work requires written approval. One named sibling receives service notices, and another keeps the warranty file.
If any of those statements is not true, the contract is not ready. Put the missing answer on its own line. That is how you keep a paperwork problem from becoming your debt, your unpaid labor and your fault all at once.