For changes of address relating to an employment tax return, we issue confirmation notices (Notices 148A and 148B) for the change to both the new and former address. It can take four to six weeks for a change of address request to fully process. For half of the states in the US, the letter goes to the IRS office in Cincinnati. For the other part of the country, the letter goes to the office in Provo, Utah. Make sure to provide the proper address when you are updating your information. Having the address updated with the IRS takes four to six weeks, and a mistake will extend the process. If the change of address relates to an employment tax return, the IRS issues confirmation notices (Notices 148A and 148B) for the change to both the new and former address. Processing. It can take four to six weeks for a change of address request to fully process. If you have received a written notice from the IRS requesting an adjustment to a recent tax return, requesting additional documentation for your return, or if the IRS sends notice that your payment is late, you will need to know how to respond appropriately. How to Write a Letter for Change of Address. Whether you're moving yourself and your family or relocating your business, you may want to write a formal letter for change of address so all of your contacts have your new address.... The IRS provides a clear set of steps for changing and/or updating your address for future correspondence. Step 1 Change the address directly on the label sent to you by the IRS. In the letter, also include the business name, the EIN and mailing address so the IRS can verify and make the change to the correct account. You will need to mail the letter to one of the two addresses that the IRS uses to receive mail. The benefit of sending in a change of address, if the IRS needs to mail you a letter or notice, that letter will get to your new address. The IRS will update their records to reflect a person's new address when the agency receives information about the new address, even if a person does not file a Form 8822. Irs updating address letter . 66 Comments. Form 8822 requires only basic information, including the type of tax return you file, your old mailing address and your new mailing address. If you're married and file joint returns, you can change your spouse's address on the same form. irs notices regarding change of address. We've had several corporate clients receive notices from the IRS after their 1120-S returns were filed stating "We changed your mailing address... processed a request to change your address from the address shown above" where no change is shown and no change was ever requested.