What is the fax number for California FTB — Filing Enforcement?

The commonly listed fax line for California FTB — Filing Enforcement (Franchise Tax Board — Filing Enforcement Section (Personal Income Tax)) is (916) 855-5646. Always confirm on the institution’s latest instructions before you send — numbers can change.

How do I fax to California FTB — Filing Enforcement online without a fax machine?

Open the send form on this page (number is pre-filled), upload a PDF or image, pay, and RonFax transmits the fax for you. You’ll get a status page and email confirmation when delivery completes.

How much does it cost to send a fax to California FTB — Filing Enforcement?

RonFax is pay-as-you-go: $1.99 covers up to 3 pages, then $0.50 per extra page. No monthly plan required.

What should I include when faxing California FTB — Filing Enforcement?

Typical packets include: FTB Filing Enforcement notice you are responding to; Cover sheet with taxpayer name, tax year, and daytime phone; Completed forms or supporting documents FTB requested; Clear copies—not irreplaceable originals. Use a cover page if the institution asks for a subject or routing note.

Is this an official California FTB — Filing Enforcement page?

No — this is an independent send guide from RonFax. We help you transmit documents to the listed number; we are not affiliated with California FTB — Filing Enforcement. Verify requirements on their official site when unsure.

Fax to Government & tax

CA FTB Filing Enforcement Fax (916) 855-5646 — Send Online

California FTB Filing Enforcement fax is often (916) 855-5646—confirm on your notice or ftb.ca.gov, then send your reply PDF online. $1.99 up to 3 pages.

Government & tax

California FTB — Filing Enforcement

Sacramento, CA

Verified Aug 2026

Fax number

(916) 855-5646

Pre-filled below — send online in about a minute. No fax machine.

Send this fax online →

What to include

✓FTB Filing Enforcement notice you are responding to
✓Cover sheet with taxpayer name, tax year, and daytime phone
✓Completed forms or supporting documents FTB requested
✓Clear copies—not irreplaceable originals

Send your fax

Quick info

Department: Franchise Tax Board — Filing Enforcement Section (Personal Income Tax)

Fax line: (916) 855-5646

Use only when your FTB Filing Enforcement notice or ftb.ca.gov lists (916) 855-5646
Put taxpayer name, SSN/ITIN last digits as directed, and tax year on the cover page
Other FTB fax lines exist—do not reuse this number for collections or unrelated units

Confirm on ftb.ca.gov (e.g. FTB 1240 / Filing Enforcement publications) or your FTB notice. Other FTB units use different fax lines—collections, business entities, and DMV registration debt are not this number.

Prerequisites — what to prepare

Before you fax California FTB — Filing Enforcement, gather these items into one PDF when possible:

✓FTB Filing Enforcement notice you are responding to
✓Cover sheet with taxpayer name, tax year, and daytime phone
✓Completed forms or supporting documents FTB requested
✓Clear copies—not irreplaceable originals

Step-by-step — send via RonFax

No fax machine required. Pay once from $1.99 for up to 3 pages ($0.50 per extra page).

Merge your FTB response into one PDF (cover page first).
Confirm (916) 855-5646 matches ftb.ca.gov or your Filing Enforcement letter.
Upload to RonFax, review page price, pay once, and save your status link.

Back to send form ↑

Frequently asked questions

What is the fax number for California FTB — Filing Enforcement?: The commonly listed fax line for California FTB — Filing Enforcement (Franchise Tax Board — Filing Enforcement Section (Personal Income Tax)) is (916) 855-5646. Always confirm on the institution’s latest instructions before you send — numbers can change.
How do I fax to California FTB — Filing Enforcement online without a fax machine?: Open the send form on this page (number is pre-filled), upload a PDF or image, pay, and RonFax transmits the fax for you. You’ll get a status page and email confirmation when delivery completes.
How much does it cost to send a fax to California FTB — Filing Enforcement?: RonFax is pay-as-you-go: $1.99 covers up to 3 pages, then $0.50 per extra page. No monthly plan required.
What should I include when faxing California FTB — Filing Enforcement?: Typical packets include: FTB Filing Enforcement notice you are responding to; Cover sheet with taxpayer name, tax year, and daytime phone; Completed forms or supporting documents FTB requested; Clear copies—not irreplaceable originals. Use a cover page if the institution asks for a subject or routing note.
Is this an official California FTB — Filing Enforcement page?: No — this is an independent send guide from RonFax. We help you transmit documents to the listed number; we are not affiliated with California FTB — Filing Enforcement. Verify requirements on their official site when unsure.

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