A Lasting Power of Attorney for property and financial affairs sounds straightforward on paper. You manage your mum or dad’s current account, pay the bills, withdraw cash for the care home. Yet certain habits, adopted without much thought, can transform an act of family care into an accusation of financial abuse in court or open warfare with your siblings.
Here are the six most common mistakes made with an elderly parent’s bank account, and crucially, how to avoid them in practice.
1. Operating the account without a formal Lasting Power of Attorney registered with the Office of the Public Guardian
This is mistake number one, by far the most widespread. An adult child uses their parent’s bank card “to help them out,” without any Lasting Power of Attorney having been registered at the bank or with the Office of the Public Guardian. Legally, this card remains linked to the account holder’s name only, not to you as their attorney. Using a card that isn’t formally registered to you in an attorney capacity, even with your parent’s verbal agreement, protects no one in case of a family dispute.
A Lasting Power of Attorney must be formally created, registered with the Office of the Public Guardian, and the bank must be notified in writing. This document sets out the scope of your powers: viewing the account only, or full management with ability to make transfers and withdrawals. Without this framework, your bank adviser cannot protect you if a sibling, or a solicitor during probate, contests your actions. The Office of the Public Guardian provides guidance on registration; your bank will direct you to complete their own internal process once the LPA is registered.
2. Making cash withdrawals without documenting or justifying expenditure
Withdrawing £200 at the ATM to buy toiletries, pay for the care home’s hairdresser, or top up the grocery budget is routine. The problem arrives when these withdrawals accumulate with no record of what they were used for. A family carer who keeps no till receipts, no notes on expenditure, faces having to justify months—sometimes years—of spending after the fact, during a review or a contested probate process.
The rule is straightforward: every cash withdrawal deserves a receipt or record, no matter how small. A dedicated notebook, a spending-tracking app, or simply envelopes marked with the date and purpose of withdrawal is enough to create a solid audit trail. This discipline protects both your parent and yourself.
The habit that saves endless trouble
Photograph every receipt with your phone and file them by month in a dedicated folder. If a bank query or family question arises, you have your answer in minutes rather than rummaging through drawers for hours.
3. Mixing your parent’s assets with your own finances
Using your parent’s account to pay for your own expenses, even temporarily, creates a dangerous blurring of who owns what. Some carers pay a personal bill from the parent’s account thinking “I’ll repay it later,” or advance fees from their own account without ever seeking reimbursement. In both cases, the accounts become impossible to untangle.
A joint account between parent and child makes matters far worse, especially at probate: funds in that account at death can be requalified as a hidden gift by other heirs, or deemed part of your own estate. Keep two strictly separate accounts and record every transaction between them, with date and reason. This protects everyone’s interests and makes probate straightforward.
4. Failing to inform your siblings of bank movements
Silence breeds suspicion. When one adult child alone manages an elderly parent’s bank account without ever sharing information with the rest of the family, siblings often imagine the worst, even without evidence. This lack of transparency is behind most family rows that end up in front of a judge or a solicitor.
A quarterly update, even informal, covering major expenses—medical bills, care home fees, home repairs—defuses most tension. Some attorneys go further, sharing an annotated bank statement with a sibling or arranging an annual family meeting to review the parent’s financial management. Transparency costs nothing and prevents years of resentment.
5. Continuing to use the Power of Attorney after a court protection order is made
A Lasting Power of Attorney automatically ceases to be valid the moment a court protection order—such as a guardianship or conservatorship—is made by the Family Court, which changes how bank cards and withdrawals are managed. Yet many carers carry on using the old Power of Attorney out of habit, or because the bank wasn’t informed of the change in legal status.
This illegal continuation exposes you to immediate revocation of your powers, even prosecution, if bank movements happen after the court formally appoints a guardian or conservator. As soon as a protection order is made, notify your bank at once and provide a copy of the court order to update account access rights. The Office of the Public Guardian publishes guidance on how these transitions work; your solicitor should ensure the bank is told immediately.
6. Triggering bank alerts through unusual transaction patterns
Banks have internal monitoring thresholds that trigger automatic checks: repeated ATM withdrawals near the daily limit, transfers to a personal account that are out of character, or sudden activity on an account that is normally quiet—all are red flags that banks watch for precisely because they can indicate financial abuse of vulnerable older people. These thresholds vary by bank, but they exist to protect.
| Bank alert signal | Associated risk |
|---|---|
| Frequent withdrawals close to daily ATM limit | Temporary card block, request for proof of purpose |
| Unusual transfer to personal account | Report for suspected financial abuse |
| Dormant account suddenly active | Bank adviser review, possible temporary freeze |
Triggering these alerts is not an accusation, but a conversation with your bank adviser can clear matters up quickly if everything is justified and documented. Staying below these thresholds, or giving a written explanation beforehand if a large and exceptional expense is pending—such as medical fees or home adaptations—avoids unnecessary freezes and delays.
What you must remember before managing an elderly parent’s finances
Managing an elderly parent’s money requires both rigour and care. A Power of Attorney is not a blank cheque: it comes with a duty to keep records, be transparent with your siblings, and stay alert the moment a court order enters the picture. These simple disciplines protect your parent, protect you, and preserve family harmony when probate comes around.
