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). The IRS Online Payment Agreement system lets you apply and receive approval for a payment plan to pay off your balance over time.By mail, please complete Form 9465, Installment Agreement. Request. Take control of your taxes with flexible payment options. View, print and fill out most of the forms listed below. Those who are eligible will get a letter in the mail, according to the IRS. Under the agreement, you'll make monthly payments toward your unpaid tax balance. I Applied for Assistance. Secured drop off is available using the orange drop off collection box in the Utility Cashiers drive-thru alley (directions listed above). Individuals who had a valid extension to file their 2023 return due to run out on Oct.