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.Simply click the "Set up a Payment Installment Plan with IDOR" link. An agreement you reach directly with the IRS to pay your federal tax due for a specific period of time is known as an IRS payment plan. Non-Streamlined Installment Agreement. Haven't responded to earlier notices; Didn't set up a payment plan or pay in full. You'll need to create a StudentAid. Gov account to access and fill out the FAFSA form. The Internal Revenue Service (IRS) is willing to set up payment arrangements for cashstrapped taxpayers. When you owe significant back taxes, with interest and penalties, seeing the full number in a letter from the IRS can be a gut-wrenching experience.