Use Form 9465 to request a monthly installment plan if you cannot pay the full amount you owe shown on your tax return (or on a notice we sent you). An IRS payment plan is an agreement you make with the agency to pay your federal tax bill over time.Use Form 9465 to request a monthly installment agreement (payment plan) if you can't pay the full amount you owe shown on your tax return. The IRS Online Payment Agreement system lets you apply and receive approval for a payment plan to pay off your balance over time. Wondering if it's possible to set up an IRS installment payment plan to pay your taxes? Taxpayers who receive certain notices requiring them to send information to the IRS can now submit their documentation online through IRS.gov. When you file your tax return, fill out IRS Form 9465, Installment Agreement Request (PDF). I worked in collections at the IRS. Setting up payment plans was the easiest part of my job. Follow the prompts to complete the forms and upload supporting documents.