IRS Form 433-D is one of the many forms used to set taxpayers up with a tax resolution. This particular form is used to apply for an Installment Agreement, which breaks up an overdue tax balance into smaller monthly payments. Filing Form 433-D carefully and accurately is very important, as it can impact whether an individual’s settlement plan is accepted. It is important for any taxpayer to note that they need to submit an amount they could afford to pay each month. Additionally, anyone filing Form 433-D should make themselves aware of the terms of their installment agreement before signing.