What these letters are about We are addressing, or need more information about, your business, estate, or trust entity. This is needed to verify information reported on your Form SS-4, Application for Employer Identification Number (EIN). What you should know Failure to timely respond or update the entity information will delay processing of returns filed, issuance of refunds or applying overpayments to next year’s estimated tax, if applicable. Due to coronavirus (COVID-19), it is taking us longer than 180 days to process responses. For faster processing, submit your response by fax to the number provided in your letter. Do not mail us your response if you have faxed it. What you need to do if you received a Letter 5263C or Letter 6042C If you were or are affiliated with the entity: Answer all the questions in the letter and provide the information requested within 30 days from the date of the letter. If the letter is for an estate, send a copy of the deceased individual’s death certificate with your reply. If the letter is for a trust, send a copy of the Certificate of Trust document or the title and completed signature pages from the trust documents with your reply. If you’re not affiliated with the entity, or you’re not the responsible party: Select the correct statement on the letter indicating no affiliation and provide your name. Return the letter to us within 30 days from the date of the letter. If the responsible party we have on file for the entity has changed, submit Form 8822-B, Change of Address or Responsible Party-Business PDF. What you need to do if you received Letter 6217C If we confirmed we received your response to Letter 5263C or Letter 6042C, you do not need to take any action. We’ll contact you within 180 days if we have questions. If we requested more information about your business, estate, or trust, provide the information requested in the timeframe provided on the letter. If we notified you that the employer identification number (EIN) information on file is not correct, submit Form 8822-B, Change of Address or Responsible Party-Business. Frequently asked questions What will happen after I provide my response? We’ll contact you within 180 days if we have questions. If not, no action is required. It will take about 9 weeks to make a determination and process any returns once we’ve reviewed your response. What should I do if there's been a change of address or responsible party for the business, trust or estate? Submit Form 8822-B, Change of Address or Responsible Party – Business PDF. What should I do if I think I could be a victim of identity theft? You can read Publication 5027, Identity Theft Information for Taxpayers PDF. What should I do to protect my business and prevent data loss? Review Identity Theft Information for Businesses. Reference Tools Publication 1, Your Rights as a Taxpayer Full list of tax forms and instructions Need Help? You can authorize someone to contact the IRS on your behalf. See if you qualify for help from a Low Income Taxpayer Clinic. If you can’t find what you need online, call the IRS number at the top of your notice or letter.