It is equivalent to that you bought an unqualified product from a shopping mall and caused you losses. The shopping mall should bear the liability for breach of contract and compensation. The same is true for the firm. One is to refund the service fee, and the other is to compensate for the loss. But you said that if you only pay taxes and there are no other losses (such as late fees and fines), the court may not support letting the firm pay compensation. In addition, the firm can also defend itself, mainly to prove that it is not at fault. Sometimes the tax bureau is not necessarily right. Generally speaking, the level of the firm is much higher than that of the tax bureau. Unless it is a serious fault, the firm is not as strong as the tax bureau. So it is very likely that the firm's defense will be established, but you can't change the decision of the tax bureau.