California FTB Notice Demand for Information or Tax Return (BE 4935)

FTB Notice BE 4935 is the Franchise Tax Board’s formal demand that you either file a missing California tax return or provide information explaining why you don’t have a filing obligation. It’s most commonly sent to people who had California income reported to the FTB by employers or payers — through W-2s, 1099s, or information returns — but never filed a state return for that year. The FTB matches income records against its filing database, and when there’s no return, this notice goes out.

What catches people off guard is that BE 4935 can arrive years after the tax year in question. California has no statute of limitations on assessments when a return was never filed — under Revenue and Taxation Code Section 19057, the FTB can assess tax at any time if no return was submitted. So a 2019 filing gap can still trigger a BE 4935 in 2026. The notice sets a response deadline, typically 30 to 60 days.

At The Reed Corporation, we see BE 4935 notices regularly for clients who moved to or from California and didn’t realize they had a California filing obligation for a portion of the year. Part-year residents owe California tax on income earned while living in the state, and that obligation exists regardless of whether you filed in another state.

You need to respond in writing within the notice’s deadline even if you believe you have no California filing obligation. The FTB won’t assume you’re exempt just because you didn’t respond — they’ll proceed to estimate your income and issue a tax assessment. Your response should explain why you had no obligation: for example, you were a non-resident with no California-source income, or your total income fell below California’s filing threshold ($17,029 for single filers under 65 in 2024).

Non-residents are only taxed by California on income sourced to California — wages for work physically performed in California, California rental income, gains from California real property sales, and income from California business operations. Remote workers need to be careful here: if you worked for a California company but performed all your work outside California, you generally have no California-source income. However, if you worked in California even temporarily, those days can create a tax obligation.

We help clients draft a written response to BE 4935 that clearly establishes their non-resident status or below-threshold income with supporting documentation. Getting this response right the first time matters — an inadequate response often leads to a follow-up assessment that’s harder to unwind than simply responding correctly to begin with.

The FTB will issue a Substitute for Return (SFR) — their own version of your tax return based on whatever income data they have, with no deductions or credits. SFR assessments are almost always higher than what you’d owe if you filed your own return, because the FTB uses the standard deduction and ignores credits you might qualify for, like the Earned Income Tax Credit or Child Tax Credit. The SFR becomes the basis for a Notice of Proposed Assessment.

After the Notice of Proposed Assessment, you have 60 days to protest. If you don’t protest, it becomes a final assessment and collection begins. At that point, you’ve lost your right to a simple administrative dispute and would need to pay first and then file a Claim for Refund under Revenue and Taxation Code Section 19306 to challenge the amount — a longer and more expensive process. Penalties also continue to accrue under Section 19132.

We’ve helped clients undo SFR assessments by filing the actual return — even years late — because California generally accepts late-filed returns and adjusts the assessment so. But the sooner you respond to the BE 4935, the less cleanup work is required. A late-filed return avoids the failure-to-file penalty going forward and puts you on the right footing.

Yes, and in most cases that’s exactly what you should do. Filing the actual return is the cleanest response to a BE 4935 — it gives the FTB the information they’re asking for and replaces their estimated assessment with the real numbers. If you’re due a refund, you’ll want to file even faster: California has a four-year statute of limitations on refund claims under Revenue and Taxation Code Section 19306, so you can lose refunds from older years if you wait too long.

Be aware that a late-filed return is subject to a failure-to-file penalty of 5% of the tax due per month (up to 25%) plus the failure-to-pay penalty of 0.5% per month (up to 25%), plus interest at the applicable rate. If you owe a balance, those penalties can add up quickly. However, you can request penalty abatement for the first year you’ve been out of compliance under the FTB’s One-Time Penalty Abatement provision, which went into effect January 1, 2022.

Our team prepares the return, calculates what’s owed (or what refund you’re due), and submits it with a cover letter to the FTB’s Assessment Review Unit linking it to the BE 4935 notice. That ensures it gets matched to your open case rather than processed as a routine late filing.

BE 4935 is specifically about a missing return or missing filing information — it’s the FTB saying ‘we don’t have a return from you at all.’ FTB 4579 (Demand to Furnish Information) is different: it’s issued when you did file a return, but the FTB wants documentation to verify what you reported. The BE 4935 is an earlier-stage notice targeted at non-filers, while the 4579 is audit-related and targets filers whose numbers the FTB is questioning.

The procedural rights are also different. With a BE 4935, your primary obligation is to either file the return or provide a written explanation of why you’re not required to. With a 4579, you’re responding to a specific document request within an existing audit or inquiry. Mixing these up — treating a 4579 like a non-filer notice or vice versa — leads to incomplete responses that don’t address what the FTB actually needs.

Both notices carry real consequences for ignoring them, but the BE 4935 can lead to a Substitute for Return assessment, which has a different protest process than a regular audit finding. We track which notice type each client receives and tailor the response so. Getting that distinction right from the start saves a lot of time and back-and-forth with the FTB.