Failing to pay your property tax (LPT) on time can result in several consequences. The Revenue Commissioners can apply interest on the overdue amount from the date the payment was due. Additionally, if the tax remains unpaid, it may lead to a surcharge on your Income Tax, USC (Universal Social Charge), or Corporation Tax return. In severe cases, legal action might be pursued to recover the owed taxes, and a charge could be placed against the property.