What is Form 8453-WH?

• Form 8453-WH, U.S. Withholding Agent’s E-file Declaration for Form 1042, is used to authenticate and authorize the electronic filing of Form 1042 when submitted through an ERO. 
• This form declares that the information provided in the e-filed Form 1042 is accurate and complete. 
• It must be signed by the withholding agent or an authorized individual before the return is transmitted to the IRS.