If any manufacturer, wholesaler, distributor, brewpub or small craft brewery, subject to the provisions of this article, shall fail to pay any tax due under the provisions of this article, within the time, and in the manner, herein provided, the commissioner is authorized to assess, and collect, such tax, together with interest thereon from the date such tax became due at the rate of one percent (1%) per month, and in addition to the amount of the tax due and the interest accrued thereon, the commissioner may, in his discretion, assess and collect, from such delinquent taxpayer, a penalty equal to the amount of the tax found to be due.