California FTB Notice Please Call Us About Your California Income Taxes (FTB 4505)

The FTB 4505 is a contact request notice — the California Franchise Tax Board wants to discuss your California income taxes and is asking you to call them. This notice is typically sent when the FTB has identified a discrepancy or issue on your account that they haven’t yet resolved through automated processes. It might involve unreported income, a mismatch between your return and information reported by employers or financial institutions, an unfiled return for a prior year, or a balance due that hasn’t been addressed.

The FTB 4505 is softer in tone than a demand for payment or an audit notice, but don’t let that fool you. It means something on your account caught the FTB’s attention and they want information from you before deciding their next move. Ignoring it doesn’t make the issue go away — it typically results in the FTB making a unilateral determination, which almost always goes against you.

Before you call the FTB in response to this notice, know what the issue is likely about. Pull your FTB account transcript at MyFTB.ca.gov and review your filed returns for the years mentioned in the notice. Calling without that background can turn a routine inquiry into an inadvertent disclosure of something else. We routinely review the FTB account first and then prepare clients for FTB calls — or make the call on their behalf.

You don’t have to call the FTB yourself, and in many cases it’s better if you don’t — at least not before you know what the issue is. Anything you say to the FTB during a phone conversation can be used to inform their next steps. If the FTB 4505 relates to unreported income, a complex business issue, or a year where your return was complicated, speaking directly to them without preparation creates risk.

A licensed CPA or EA can call the FTB on your behalf with a valid Power of Attorney (California FTB Form 3520). Once an authorized representative is on file, the FTB should direct all communication through that representative. The FTB 4505 may have actually prompted the FTB to pull your file — if they’ve already started a correspondence audit or informal review, having representation in place limits your exposure.

Simple situations — a minor discrepancy that you can explain with documentation, an unfiled return you’re prepared to file immediately — may be fine to handle yourself with advance preparation. Anything involving potential unreported income, multi-year issues, or amounts over $10,000 warrants professional review before the call happens.

Ignoring the FTB 4505 typically results in the FTB taking the action it was considering anyway — without your input. If they identified unreported income, they’ll issue a proposed assessment under Revenue and Taxation Code Section 19087, usually based on third-party information reports (W-2s, 1099s). These proposed assessments are often higher than what your actual tax liability would be because the FTB doesn’t know your deductions, exemptions, or credits — they’re estimating from income data alone.

Once a proposed assessment becomes final — 30 or 60 days after the notice, depending on the type — the debt becomes immediately collectible. The FTB can then file a state tax lien, issue earnings withholding orders to your employer, or levy your bank accounts without further notice beyond what’s already been issued. The FTB 4505 was your opportunity to respond before this escalation.

We’ve resolved situations where a client received an FTB 4505, didn’t respond, and ended up with a tax bill three times their actual liability because the FTB assessed based on gross 1099 income without accounting for deductible expenses. Responding to the 4505 with documentation would have resolved the issue for a fraction of the eventual cost. Don’t let a simple notice escalate into a serious collection matter.

Before calling the FTB in response to the 4505, gather your California tax returns for the years referenced in the notice and your W-2s, 1099s, and other income documents for those years. Pull your FTB account transcript from MyFTB.ca.gov to see exactly what’s on your account — any proposed assessments, adjustments, or balances. Have the notice itself in front of you, including the notice number and the specific tax year(s) mentioned.

Also have your Social Security number and any FTB account numbers ready. If you’ve previously filed a Power of Attorney with the FTB for a CPA or tax professional, have their contact information handy. If you’ve already paid any balances the FTB might be calling about, have proof of payment — bank records, payment confirmation numbers — available to reference during the call.

The FTB’s main taxpayer service line is 800-852-5711. Wait times can exceed an hour during peak periods, so call early in the morning or later in the week. If you want to handle this through written correspondence instead of a phone call, the FTB accepts written responses at their main processing address, though written resolution takes significantly longer than a phone call.

Yes, that’s one of the most common triggers for the FTB 4505. California receives copies of all federal information returns — W-2s, 1099-NEC, 1099-MISC, 1099-B, 1099-INT, and others — filed with the IRS. They also receive information from federal tax returns and from California businesses that issued 1099s. When income reported by a third party doesn’t match what you reported on your California return, the FTB flags the account and sends a contact notice.

A frequent scenario: you received a 1099 for freelance work and forgot to report it, or you sold stock with a 1099-B and didn’t include the proceeds on your California return. California also has its own income information sharing agreements with other states — if you earned California-source income while living in another state, the FTB may have picked that up. Under IRC Section 6050W, payment processors like PayPal and Stripe report on Form 1099-K only when gross payments exceed $20,000 and transactions exceed 200.

If you know you have unreported income, proactively filing an amended California return (Form 540X) before the FTB finalizes an assessment is almost always better than waiting. An amended return often reduces the final balance and demonstrates good faith, which can influence how the FTB handles penalties. We’ve filed amended returns in response to FTB 4505 notices that cut proposed assessments by 60-70% compared to what the FTB was about to assess on its own.