Under current law, clients' trust accounts are protected under the IOLTA program. The FDIC provides unlimited insurance coverage.
However, unless extended by Congress, beginning January 1, 2013, such unlimited coverage will terminate and the new limit will once again be $250,000 per depositor. All funds held in such trust accounts as well as all funds held, personally, by the same client in the same institution will be considered in the $250,000 limit.
Be careful and review your bank's regulations and the funds you are holding for the benefit of your clients. Watch Congress for any "lame duck" laws on this and the FDIC and its responsive regulations. You may have to split clients' funds into two or more banking institutions in order to keep his/her money insured. And you may once again have the responsibility of checking on the financial soundness of the banking institution in which you maintain your clients' trust account.