Upon written application made before the date on which payment must be made, the Department may for good cause extend by 30 days the time within which a taxpayer is required to pay the tax imposed by this chapter. If the tax is paid during the period of extension, no penalty or late charge may be imposed for failure to pay at the time required, but the taxpayer shall pay interest at the rate of 1 percent per month from the date on which the amount would have been due without the extension until the date of payment, unless otherwise provided in NRS 360.232 or 360.320.