How do I get rid off the power of attorney I gave my wife 10 years ago when I was ill?

If she is still married to you, she might not need the poa. We are a community property state. However, if it was recorded, you can rescind it at the Auditor's office. You can inform her is voided. If she is using it to manage separate property, tear it up and any copies that have been made. If it was used to get her name added to accounts that are separate funds, you can tell the banks to remove her name. No one can do anything if you have not granted or have rescinded any power given. But you have to force full. These places do not necessarily want to change their computers and such.

You should revoke the power of attorney by executing a revocation in the same manner as you did the original document. You should consult an estate planning attorney for assistance.

You need to have an attorney look at the document. Some Powers of Attorney have an expiration built into the language such as "until this is no longer needed", some have an actual expiration date.

Give her a notice that you have revoked the power of attorney. Give a copy of that document to anybody that she is using it with as well. It probably would not be a bad idea to have it notarized so that the recipients know that it is you that is revoking it.

You do not say why you want to revoke it. I assume you are estranged or having marital issues but All you need to do is to REVOKE the power of attorney in WRITING.. Write out a revocation of the power of attorney sign it and have your signature notarized and deliver her a copy. Also deliver a copy to anyone or entity you know that has knowledge of the old POA and have allowed her to act on your behalf. Now the above said she may choose to ignore the revocation and act anyway especially with those third parties that you do notify the POA has been revoked. If she does she will be liable to you for damages or to you estate.. Now, it might be prudent to grant a power of attorney to act on your behalf to another person who you trust. and give them a copy of the revocation of her power of attorney AND a copy of a proof that you actually gave her a copy. That way they can enforce the revocation if you ever become disabled and she chooses to act.

Check the document, there should have been an ending date written into it.

You simply revoke it.