Nobody sits down and decides that Mom's errands will quietly add to the monthly total. It happens one pharmacy pickup at a time. A grocery run here, a bank stop there, a trip back because the first store was out of the item. Each piece looks too small to bring up, so it never gets discussed, and the total climbs until the person doing the driving starts to feel it.
Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.
This guide is for the moment you want to know what the errand tab really includes, and who should carry which part of it.
Name every cost that rides along with an errand
The obvious cost is the item itself, but an errand usually carries more than that. Start a list with these lines and add anything else your family actually pays for.
Gas and mileage for whichever vehicle makes the trip, whether it is yours, Mom's, or a paid driver's. Parking, tolls, and any delivery or service fee the store adds. Wait time at the counter, which can turn a ten-minute errand into an hour. A return trip when the first attempt fails. A minimum booking block if you hire someone, because many paid helpers charge for the block, not the minutes you actually used. And your own time, which nobody bills but somebody pays.
Check the fees before you compare the trips
Before you decide whether to pay someone else to run errands, ask three questions. Does the store or pharmacy charge for delivery, and is there an order size that avoids the fee? Does the pharmacy offer a call-ahead or pickup window that cuts the wait? If you are considering a paid helper, what is the minimum time block, and does a short errand still bill the full block? Write each answer down along with who gave it and when, since a phone answer that changes later is hard to prove.
Build the log so the split is a fact, not a feeling
For two weeks, write one line per errand. Record what was bought or picked up, who went, how long it took including the wait, what it cost in gas or fees, and whether a return trip was needed. Save the receipts in one folder. At the end you will know whether the tab is a few big trips or many small ones, and you can point to specific lines instead of general frustration. That is the difference between a sibling conversation about money and a sibling conversation about who is tired.
Decide the rule before the next run
Once you have the log, agree on three things in writing. Which errands come out of Mom's funds. How mileage is reimbursed, and at what rate your family chooses. Who approves a trip that is not already on the list. Keep the rule short enough that someone can follow it without making a call. If the errands are heavy enough to need a regular paid helper, compare that cost against the log you just built, not against a guess. For local options, see Local help, and for how we sort these questions, see How we write.