Under the statutes of most states in this country, if one beneficiary requests an accounting of the estate's assets and liabilities, the accounting from a fiduciary perspective must be done.In your situation, since you as a beneficiary under your father's estate do not want an accounting of it, but the other two beneficiaries do, not only is an accounting required, but its cost is to be paid from the estate as a whole, not from the individual shares of the two sublings that desire the accounting.In reality, the cost for the accounting is coming out of one-third of your net share. Potentially the accounting may discover assets that were not accounted for increasing the size of the estate well beyond the cost of the accounting that you do not want to pay for.You can write the attorney a letter expressing your desire to not have an accounting. It will do little good to prevent it.