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Reviewed by: William McLee
Reviewed date:
January 12, 2026

What CDTFA-392 (2020) Is For

Form CDTFA-392 is a power of attorney form used with the California Department of Tax and Fee Administration (CDTFA). It authorizes a representative to discuss tax-related matters, receive certain records, and take approved actions on behalf of the taxpayer for specified programs and periods, including sales tax, use tax, and special taxes.

The CDTFA-392 form does not require filing a return, changing income, or calculating a deduction. It is an authorization tool that controls who can communicate with CDTFA and what the representative can do in CDTFA systems for covered tax matters and statutory periods.

When You’d Use CDTFA-392

A taxpayer uses CDTFA-392 when they want a representative, such as a tax professional or California tax attorney, to communicate with the California Department of Tax and Fee Administration about taxes, filing, payments, or a notice tied to a business account. It is invaluable during a sales tax or use tax issue, such as a California sales tax audit, because the form allows the representative to discuss tax matters and requested records with the CDTFA.

Although CDTFA-392 is not a return, it supports late-filing clean-up or corrections when older tax returns and related documentation need attention. A taxpayer can also submit a new CDTFA-392 form to update the appointee name, change covered periods, or replace a prior authorization through the revocation process.

Key Rules or Details for 2020

An authorized taxpayer for the business type must sign the CDTFA-392 form. It must identify the representative by the individual appointee's name, accompanied by a valid identifier, such as a PTIN, CPA number, or California Bar number. It should clearly list the CDTFA programs and statutory periods covered, because CDTFA will limit access and communications to the matters specified on the form.

For 2020, taxpayers should ensure the form matches CDTFA account details and the taxpayer’s name on file, including Social Security or business identifiers, to avoid processing delays. If an electronic signature or eSignature is used, the taxpayer should keep a copy of the signed form and submission records in secure cloud storage for future audit or tax dispute documentation.

Step-by-Step (High Level)

Completing the CDTFA-392 form

  • The taxpayer should download the CDTFA-392 form from the CDTFA website and review the posted instructions and links.

  • The taxpayer should enter their name, contact details, account numbers, and business structure exactly as they appear on CDTFA records.

  • The taxpayer should enter the appointee's name as an individual and include a qualifying identifier such as a PTIN, CPA number, or California Bar number.

  • The taxpayer should list the relevant programs, such as sales tax and use tax, and provide the specific periods or an ongoing period description that accurately represents the situation.

  • The taxpayer should choose between general authorization and specific authorization, and confirm that the selected powers align with the intended tax matters.

Signatures, electronic signature, and submission

  • The authorized signer should sign and date the form, and the signer should include the correct title when signing on behalf of a business.

  • If the taxpayer uses electronic signature tools, they should ensure the chosen method meets the CDTFA's acceptance rules for signatures, including any requirements for an e-signature, electronic signature, or a signature image.

  • If the taxpayer uses tools such as PDFFiller or airSlate SignNow, the taxpayer should store the completed file in secure cloud storage and use end-to-end encryption when transmitting sensitive information.

  • If the taxpayer signs and submits from mobile devices, such as Android, the taxpayer should confirm that the final PDF is clear and complete, and avoid workflow issues caused by browser extensions from the Chrome Web Store.

  • The taxpayer should submit the completed form using the submission method described by the CDTFA and retain a copy of the final form and submission confirmation for their records.

Common Mistakes and How to Avoid Them

  • A taxpayer often lists a firm name instead of an individual; in such cases, the taxpayer should list an individual representative as the appointee name to avoid processing delays.

  • A taxpayer sometimes forgets to include a representative identifier, and the taxpayer should consist of at least one identifier, such as a PTIN, CPA number, or California Bar number.

  • A business may sometimes use an unauthorized signer, and it should ensure the signer has the necessary authority before submitting the form.

  • A taxpayer may sometimes omit the programs and periods; however, the taxpayer should clearly list sales tax, use tax, and any special taxes, and include the periods covered.

  • A taxpayer may sometimes skip the revocation process, and the taxpayer should clearly indicate whether the new CDTFA-392 replaces earlier authorizations for the same matters and periods.

What Happens After You File

CDTFA typically reviews the submission for completeness and signer authority, and CDTFA may request additional documentation if there are representation issues. After acceptance, the CDTFA records the authorization, allowing the representative to discuss the taxpayer’s account, receive copies of correspondence, and address audit or notice responses within the granted scope.

The taxpayer remains responsible for tax obligations even when a representative handles communications. If the taxpayer owes a balance, the CDTFA can assess penalty and interest rate charges under applicable rules. The representative’s role is to help manage the process, not to transfer liability.

FAQs

Can more than one representative be appointed on the same form?

A taxpayer can appoint more than one representative if the form provides space or if the taxpayer attaches additional pages that clearly identify each representative.

Does CDTFA-392 allow the representative to file returns and make payments online?

CDTFA-392 authorizes representation for tax matters; however, electronic filing and payment permissions may require separate access steps or additional authorizations, such as CDTFA-91-B, for electronic services.

Can the taxpayer limit what the representative can do?

The taxpayer can limit authority by choosing specific authorization and restricting actions such as extending statutory periods or delegating authority as a third-party delegate.

Can the taxpayer revoke a power of attorney and replace it?

A taxpayer can revoke prior authorizations by filing a new CDTFA-392 and using the revocation process section to replace earlier powers for the same matters and periods.

What records should be kept after submission?

A taxpayer should retain a copy of the signed form, submission proof, and supporting records, such as a general ledger, chart of accounts, resale certificate documentation, and any audit correspondence related to the sales and use tax return.

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