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. You can request a payment plan.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). Applying online has the lowest application fees. This article discusses five methods that can be used to file Form 9465 as well as what states have an installment agreement request form in Drake Tax. IRS letters are computer generated and follow a time line set in the database. The IRS defaults installment agreements for 4 reasons: You missed payments during the year. Can't afford to pay your income taxes? You may be able to qualify for an installment plan with the Internal Revenue Service. The IRS continues to remind taxpayers to watch out for email schemes.