Many people assume that having a joint bank account means their spouse, partner, or family member will automatically have full access to the account if they become unable to manage their own affairs. Unfortunately, this isn’t always the case.
In certain circumstances, joint bank accounts can be restricted or even frozen when one account holder loses mental capacity. This can create unexpected financial difficulties for families who need immediate access to funds for everyday expenses.
Understanding how a Lasting Power of Attorney (LPA) works can help you avoid these complications and protect your financial independence.

How Do Joint Bank Accounts Usually Work?
A joint bank account is owned by two or more people. Typically, each account holder can:
- Deposit and withdraw money
- Pay bills
- Manage account transactions
- Access online banking
Many couples use joint accounts for household expenses, mortgage payments, and day-to-day living costs.
However, when one account holder loses mental capacity due to conditions such as dementia, stroke, or serious illness, the situation can become more complicated.
Can a Joint Bank Account Be Frozen?
Yes, in some cases.
Banks have a legal duty to protect vulnerable customers. If they become aware that one account holder has lost mental capacity, they may place restrictions on the account while they assess the situation.
The bank’s response will depend on:
- The bank’s policies
- The type of account
- Whether a Lasting Power of Attorney is in place
- The circumstances surrounding the loss of capacity
While some banks may allow the other account holder to continue operating the account, others may limit access until they are satisfied that appropriate legal authority exists.
Why This Can Cause Problems

Many families rely on joint accounts to cover essential expenses such as:
- Mortgage or rent payments
- Utility bills
- Care costs
- Food and household expenses
If access is restricted unexpectedly, it can place significant financial pressure on loved ones at an already stressful time.
Without the proper legal arrangements, family members may find themselves unable to make decisions or access funds needed to support the person who has lost capacity.
How a Lasting Power of Attorney Helps
A Property and Financial Affairs Lasting Power of Attorney allows a trusted person to manage financial matters on your behalf if you become unable to do so yourself.
This may include:
- Managing bank accounts
- Paying bills
- Handling investments
- Managing property transactions
- Communicating with financial institutions
Having an LPA in place provides banks with clear legal authority regarding who can act on your behalf.
This can help avoid delays, confusion, and potential restrictions on financial accounts.
What Happens If There Is No LPA?
If mental capacity is lost and no LPA exists, loved ones cannot simply step in and take control of financial affairs.
Instead, they may need to apply to the Court of Protection to become a Deputy.
This process can:
- Take several months
- Involve court fees
- Require ongoing reporting obligations
- Cause delays in accessing funds
During this period, managing finances can become significantly more difficult.
Common Misconceptions About Joint Accounts
“My spouse can automatically manage everything.”
Not necessarily. While a joint account holder retains rights to the account, banks may still require additional safeguards when one party loses capacity.
“We don’t need an LPA because we have joint finances.”
An LPA covers much more than a joint bank account. It can also allow trusted individuals to manage pensions, investments, property, and other financial matters.
“We’ll sort it out if it happens.”
Unfortunately, LPAs can only be created while the person still has mental capacity. Once capacity is lost, the option is no longer available.
Planning Ahead Protects Everyone

Creating a Lasting Power of Attorney is one of the simplest ways to ensure your finances can be managed smoothly if circumstances change.
It provides clarity for your family, reassurance for financial institutions, and peace of mind that your affairs will remain in trusted hands.
Final Thoughts
Joint bank accounts can offer convenience, but they are not a substitute for a Lasting Power of Attorney.
Without an LPA, families may face delays, restrictions, and legal hurdles when trying to manage finances after a loved one loses mental capacity.
Planning ahead can help ensure that essential financial decisions can continue to be made when they matter most.

