California FTB Notice of Proposed Assessment: How to Build a Protest Record

Review the primary official source.

Updated September 20, 2026. Verify the current agency form, notice, and instructions before acting.

A California Franchise Tax Board Notice of Proposed Assessment states proposed tax, penalties, and interest and supplies a notice-specific deadline for protest. A useful protest does more than say the assessment is wrong: it identifies each disputed adjustment, states the legal and factual basis, cites the supporting record, and preserves the requested review. An audit inquiry, NPA protest, Notice of Action appeal, and refund claim are different stages and should not be blended.

Read the notice and create a procedural calendar

Save the full NPA and envelope or electronic-delivery record. Record the taxpayer, account number, tax year, issue, proposed tax, penalty, interest, notice date, and printed Protest By date. Confirm whether multiple tax years or related taxpayers received separate notices. Use the deadline on each notice and current FTB instructions rather than assuming a universal date.

Create separate entries for the protest, any document-production date, an oral hearing request, continuing estimated payments, and later review. Interest may continue while a dispute is pending. Determine with an adviser whether and how payment, protective claims, or other steps affect the case; do not treat filing a protest as stopping every consequence.

Translate each adjustment into an issue matrix

For every adjustment, list the return position, FTB explanation, disputed fact, governing authority, evidence, witness or custodian, and requested correction. Build a chronology of residency, income, deductions, entity events, transactions, or federal changes as relevant. Link each sentence of the protest to a numbered exhibit instead of submitting a box of unexplained records.

Address penalties separately from tax. Identify the statutory penalty, FTB’s stated factual basis, and any reasonable-cause or other response supported by contemporaneous evidence. Do not assume that defeating one tax adjustment automatically removes every penalty or that a general hardship statement satisfies a specific standard.

Draft the protest and preserve the administrative record

The protest should identify the NPA, disputed amount, tax periods, each ground, facts, authorities, and requested relief. State whether an oral hearing is requested and name the authorized representative if any. Use the current online or written submission method, retain an exact copy, and save proof of timely receipt.

Maintain an exhibit index and a production log for follow-up requests. Preserve original electronic files, source records, correspondence, notes of conferences, and FTB acknowledgments. If a new fact emerges, supplement clearly rather than changing the account without explanation. Consistency with federal returns and prior submissions is important.

Distinguish the Notice of Action and OTA appeal stage

After considering the protest, FTB may issue a Notice of Action. That later notice starts a separate path and deadline for an appeal to the California Office of Tax Appeals. Review the new notice immediately; do not assume the NPA protest carries forward automatically or that informal discussions extend an appeal period.

The Notice of Action and OTA guide addresses that next stage. The residency-audit record guide, EDD payroll-tax audit guide, and tax-services page address distinct issues and service context.

What this means: practical action checklist

• Save the entire NPA and delivery evidence and calendar the printed Protest By date.
• Create an issue matrix for every adjustment, penalty, fact, authority, and exhibit.
• Draft specific grounds and request an oral hearing if appropriate.
• File through the current authorized channel and preserve the exact submission and receipt.
• Watch for the Notice of Action and calendar the separate OTA appeal path immediately.