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). Sample letters from the Department of Revenue, sent to businesses or taxpayers who wish to enter into a payment agreement for back taxes.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. You may request a payment plan (including an installment agreement) using the OPA application. The IRS requires government agencies to report certain payments made during the year because those payments are considered taxable income for the recipients. Why did I get less money in a federal payment (for example, my tax refund) than I expected? Enter the amount of any payment you're making with this request. You must submit the Employer Certification Letter as it appears in the template. Revenue will reject any requests with changes to the template.