Individual IRS Installment Agreements. Learn about the different types of IRS installment agreements with the IRS. Call 517-714-4965 You owe back taxes. You do not have the money to pay the taxes now. You need time to pay back the taxes. You can request an IRS Installment Agreement. If you can’t afford the IRS Installment Agreement payments then you should review IRS Tax Settlements and IRS Hardship.