I closed my business and I have amortized startup costs not cleared. How can I clear them? Business started in 2014 and closed 2017. The costs amortized for 15 years.

If you closed your business in 2017, you can deduct the remaining unamortized start-up costs as a business expense in 2017. report them in Miscellaneous expenses and describe them Unamortized start-up costs on closing of business.