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). If you can't pay the full amount you owe, you can ask to make monthly installment payments.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. Complete and sign this page. Mail it to: FRANCHISE TAX BOARD, PO BOX 2952, SACRAMENTO CA 95812-2952. Use Form 9465 to request a monthly installment plan if you can't 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 Franchise Tax Board will send a notice or letter to personal taxpayers and business entities for issues that may include but not limited to: The IRS Online Payment Agreement system lets you apply and receive approval for a payment plan to pay off your balance over time.