Kentucky Application for Individuals to Pay the Filing Fee in Installments is an online application system that allows individuals to pay their filing fee in installments instead of one lump sum. This application is available for all types of filings including individual and joint income tax returns, as well as business filings. This system allows individuals to pay their filing fee in up to four installments, with the first installment due within 10 days of filing the return. The remaining payments are due on the first day of the following months, until the full payment is made. The Kentucky Application for Individuals to Pay the Filing Fee in Installments also allows individuals to make payments by mail, online, or through the Kentucky Department of Revenue’s automated telephone system. There are four types of Kentucky Application for Individuals to Pay the Filing Fee in Installments: • Kentucky Individual Income Tax Installment Payment Agreement • Kentucky Joint Income Tax Installment Payment Agreement • Kentucky Business Tax Installment Payment Agreement • Kentucky Fiduciary Income Tax Installment Payment Agreement.