What is a Declaration Control Number (DCN)?
In CalFile, a Declaration Control Number (DCN) is the identification number we assign to your e-file return as soon as we accept it for processing. You can use this number to check the status of your e-file return. You should either print the confirmation page with your DCN or write your DCN on your California Online e-file Return Authorization for Individuals form (FTB 8453-OL or FTB 8453).
A declaration control number (DCN) is the identification number assigned to each e-file return, either by us or by the software you use. You can use this number to check the status of the e-file return. This number should be recorded on the California e-file Return Authorization for Individuals form (FTB 8453), the California e-file Signature Authorization for Individuals form (FTB 8879), or on your copy of the client’s return.
(back to top) DCN is a 14 digit number that is assigned to your tax return upon e-File. It is a required information on Form 8453-OL so the IRS can match your signature with your tax return. It is finalized after your return is accepted, that is why we ask you to print Form 8453-OL after your return has been accepted.
