The penalties for late state tax payments in Utah can vary based on several factors, including how late the payment is and the amount owed. Generally, if a taxpayer fails to pay their taxes by the due date, the Utah State Tax Commission may impose a penalty of five percent of the amount due if it is not paid within thirty days of the due date. If the payment remains unpaid for more than thirty days, an additional penalty of one percent per month may be assessed, up to a maximum of twenty-five percent of the total amount due. Furthermore, interest may also accrue on unpaid tax balances, which can increase the total amount owed over time. It is advisable to stay informed about any changes in regulations or additional fees that may apply. For the most accurate and detailed information about penalties and interest rates, it is beneficial to consult the current Utah Tax Commission website.