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). 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. This form kind of walks you through how you can apply for an online payment agreement without using form 9465. Wondering if it's possible to set up an IRS installment payment plan to pay your taxes? Here you can find steps you'll need to request an IRS installment plan. Pay bills you received from us in the mail or set up a payment plan (bills only). Individual Taxes Make tax due, estimated tax, and extension payments. Make a bank draft via our online payment system. Filing, fill in the oval in the street address area.