In some cases the representative for the probate must post a bond before the court. This ensures that the terms of the bond while the will is in probate will be followed. An attorney can help in obtaining and posting the necessary bond if applicable.
In some cases if the estate of the deceased is very small or does not exceed the state limit, informal or formal probate may not be required if the will is not contested. If you believe your case would fall under the state limit, check with a probate attorney for confirmation.