· If you can't pay all or some of the taxes you owe, you can apply for a Long-term payment plan (installment agreement). The agreement allows you to pay any taxes you owe in monthly installments. If you owe $50,000 or less, you may apply for a long-term payment plan electronically, using the Online Payment Agreement application. The IRS charges $31 for setting up the agreement using Direct Debit (automatic monthly payments ….