Where to mail IRS Form 433-D?

IRS Form 433-D, which is used to set up a Direct Debit Installment Agreement, should be mailed to the address specified in the instructions provided with the form. The mailing address can vary based on the taxpayer's location and whether they are submitting the form with a payment or not. Generally, for taxpayers in the United States, it is often sent to the appropriate IRS address for installment agreements, which you can find on the IRS website or the form instructions. Always double-check the latest guidance from the IRS to ensure it is sent to the correct address.