California FTB Penalty Waiver: Reasonable Cause or One-Time Abatement

A California FTB penalty waiver is available in two ways: you can show “reasonable cause” for missing a filing or payment deadline, or, if you’re an individual with a clean history, you can ask for the one-time abatement under Revenue and Taxation Code Section 19132.5. Individuals and fiduciaries request either type of relief on Form FTB 2917; business entities use Form FTB 2924.¹ The concept is simple. The paperwork rewards specificity, and the refund clock is unforgiving.

The Two Paths to a Waiver

Reasonable cause is the older, broader route. Both the late-filing and late-payment statutes say the penalty does not apply if the failure was “due to reasonable cause and not due to willful neglect.”² You have to prove it, with facts and documents.

The one-time abatement under Section 19132.5 skips the proof. If you qualify, the FTB will remove one timeliness penalty without asking why you were late.³ It’s limited to individual taxpayers and to tax years beginning on or after January 1, 2022, and it can only be used once in a lifetime. Most practitioners save it for a year with a large penalty.

You can use either path, but not both for the same penalty. If reasonable cause is a real possibility, try it first and preserve the one-time abatement for later.

What Counts as Reasonable Cause

The FTB’s audit manual is candid about which explanations tend to work and which don’t. Reasons that generally succeed:

Death or serious illness of the taxpayer, a responsible officer, or the person who handled the filing, where no one else could step in.
Destruction of records by a fire, flood, or other unforeseeable event.
Presence in a governor-declared disaster area, with the return filed inside the extended relief period.

Reasons that almost never succeed include confusion about due dates, believing no return was required because the business was inactive or ran at a loss, not receiving forms after an address change, and simply lacking the funds to pay.⁴ That last one matters: the FTB treats “I couldn’t afford to pay” as separate from “I couldn’t comply despite trying.” If you had the information to file but not the money, the filing penalty may be abatable while the payment penalty typically is not.

Blaming your tax preparer rarely works either. You can delegate the technical work of preparing a return, but you can’t delegate the duty to file on time. The FTB will ask whether you gave the preparer the necessary information, followed up before the due date, and chose a competent professional to begin with.

Who Qualifies for the One-Time Abatement

Three conditions all have to be true when you make the request:

You have never been granted this one-time abatement before, and either you had no prior California personal income tax filing requirement or you have never had an unabated timeliness penalty. A penalty later removed for reasonable cause does not count against you.
Every California personal income tax return you were required to file has been filed.
All tax, penalties, fees, and interest are paid in full or covered by a current installment agreement, except for the penalty you’re asking to have removed.

The request can be made orally or in writing.³ Business entities cannot use this provision.

Filing Form FTB 2917 or FTB 2924

Both forms are available on the FTB website and work the same way. Individuals and fiduciaries use FTB 2917; business entities use FTB 2924. A few ground rules apply before you write anything:

Prepare a separate form for each tax year at issue.
Pay the balance for that year in full first. The FTB won’t act on the claim until it’s paid, which usually means paying the penalty and then requesting it back as a refund.⁵
If you’re filing on someone else’s behalf, submit a Power of Attorney separately (Form FTB 3520 PIT for individuals).

Writing Part 3

Part 3 is where most requests are won or lost. The FTB wants a factual narrative tied to specific dates, not a general appeal for mercy. Describe what happened, when it started, when it ended, and why it prevented you from filing or paying despite your efforts. For a medical emergency, give the dates of hospitalization or incapacity. For destroyed records, describe what was lost and why replacements couldn’t be obtained in time.

Attach third-party documentation that corroborates the timeline: medical records, hospital discharge summaries, death certificates, police reports, insurance claims, FEMA correspondence. Organize the attachments so they follow the chronology in your explanation. A reviewer who has to hunt for the proof is a reviewer looking for a reason to deny.

The Refund Statute of Limitations

Your claim has to be filed within the refund statute of limitations, which is the latest of three dates: four years after the original return due date, four years after the date you timely filed the return, or one year from the date of overpayment.¹ Miss that window and the FTB cannot issue the refund no matter how strong your reasonable cause is.

Where to Send It

By mail:

Franchise Tax Board
PO Box 942840
Sacramento, CA 94240-0040⁵

You can also log in to your MyFTB account and upload the form with a message explaining the request.⁶ The online route generates a confirmation, which is useful when a deadline is close.

What Happens After You File

The FTB gives no guaranteed processing timeline. You’ll receive a letter approving or denying the claim. If six months pass with no response, the claim is automatically deemed denied.⁶ Silence is easy to mistake for an agency still working on your case; treat it as a denial and plan the next step accordingly.

If Your Request Is Denied

The FTB does not handle appeals internally. If your claim is denied outright or deemed denied at six months, you can appeal to the Office of Tax Appeals or file suit in superior court.⁶ For most taxpayers, OTA is the practical route.

The deadline depends on how the denial happened. If the FTB mails a written denial, you have 90 days from the date of that notice to file the appeal. If your claim was deemed denied after six months of silence and the FTB has still not issued a written denial, you can appeal at any time; once a written denial does arrive, the 90-day clock starts.⁷ Appeals can be filed through the OTA Portal, by mail, or by fax. Include a copy of the denial notice and resend all supporting documentation, even material you already gave the FTB.⁸

Interest Is a Separate Problem

A successful penalty abatement removes the penalty, but interest on the underlying tax keeps running. The FTB can only abate interest in narrow situations: interest caused by an unreasonable error or delay by an FTB or IRS employee performing a ministerial or managerial act, or interest tied to a governor-declared state of emergency or federal major disaster declaration.⁹ If the FTB itself sat on your return for months before assessing, Form FTB 3701 is the tool for that. Ordinary delays on your end, including illness and disasters, don’t qualify for interest relief even when they qualify for penalty relief, and interest continues to accrue during the review of your abatement request.

Knowing that in advance changes how you sequence things. Paying the underlying tax quickly stops the interest clock; requesting the penalty waiver afterward is what gets the penalty portion back.

1
California Franchise Tax Board. FTB 2924 Reasonable Cause – Business Entity Claim for Refund
2
California Legislative Information. California Code RTC 19131
3
California Legislative Information. California Revenue and Taxation Code 19132.5 (2025)
4
California Franchise Tax Board. MAP 11 Penalties
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California Franchise Tax Board. FTB 2917 Reasonable Cause – Individual and Fiduciary Claim for Refund
6
California Franchise Tax Board. Claim for Refund
7
Legal Information Institute. Cal. Code Regs. Tit. 18, 30203 – Time for Submitting an Appeal
8
California Franchise Tax Board. Appeal a Decision
9
California Franchise Tax Board. FTB 3701 Request for Abatement of Interest