---
title: What Is Form 9465? 2026 Guide With Sources | TaxTruce
url: https://taxtruce.com/answers/what-is-form-9465
updated: 2026-10-29
---

# What is Form 9465?

Updated October 8, 20261 sourceTaxTruce team[Fact checked](/editorial-standards)

The short answer

Form 9465 is the Installment Agreement Request. Use it to ask for a payment plan by mail if you can't or don't want to apply online. Some people also need to attach Form 433-F, a Collection Information Statement.

## Words to know

[Form 9465](/glossary)
:   The form to ask for an IRS payment plan by mail.

[Installment agreement](/glossary)
:   The IRS name for a payment plan. You pay what you owe in monthly payments.

## Sources

1. [IRS: Payment plans and installment agreements](https://www.irs.gov/payments/payment-plans-installment-agreements)

Run the numbers with our [free tax tools](/tools), like the penalty and payment plan math.