California Form FTB 3702 is the Reportable Transaction Disclosure Statement (Material Advisor) that material advisors must file with the California Franchise Tax Board to disclose any reportable transaction they organized or sold to a California taxpayer. Material advisors who skip this filing face a minimum penalty of $15,000 for each undisclosed reportable transaction and $100,000 for each undisclosed listed transaction under California Revenue and Taxation Code §19182.5.
The form mirrors the federal reportable transaction regime, so advisors who already file IRS Form 8918 still owe a separate California filing when a California taxpayer is involved. The current revision is FTB 3702 (REV 2025), and you can pull the live PDF directly from the official FTB 3702 page before you start.
According to the FTB’s most recent Tax Shelter Annual Report, California received over 2,300 reportable transaction disclosures in the last filing cycle, and roughly 18% were rejected for missing reportable transaction numbers, wrong category boxes, or unsigned Part V certifications. That single error rate is why this article walks every box, every signature line, and every penalty trap.
Here is what you will learn:
- 📑 What FTB 3702 is, who counts as a “material advisor,” and when the 60-day clock starts
- 🧾 How to fill out every line, box, and signature block exactly as printed on the 2025 revision
- 🧑💼 Three full filled-out examples — an individual CPA, a California C-corp’s outside advisor, and a pass-through entity promoter
- 📬 How to file by paper, by FTB secure portal, by certified mail, and by fax to the Abusive Tax Shelter Unit
- ⚠️ The 12 most common mistakes, the $15,000-per-failure penalty math, and the field-level fixes that keep your filing clean
What the Form Is and Who Must File It
California Form FTB 3702 is the state-level Material Advisor Disclosure Statement required under R&TC §18648. It tells the FTB’s Abusive Tax Shelter Unit that a “material advisor” provided tax advice, an opinion, or organizational help on a reportable transaction that touches a California return. The form is the state companion to federal Form 8918, and California will not accept the federal copy alone.
A “material advisor” is any person who provides material aid, assistance, or advice on a reportable transaction and who directly or indirectly receives gross income above the threshold in Treas. Reg. §301.6111-3. The California thresholds match the federal ones: $50,000 for transactions where substantially all tax benefits flow to natural persons, and $250,000 for all other transactions. If a CPA, attorney, promoter, or financial advisor crosses the threshold and the transaction touches California, FTB 3702 is required.
The five reportable transaction categories that trigger filing are listed transactions, confidential transactions, contractual protection transactions, loss transactions, and transactions of interest, each defined in Treas. Reg. §1.6011-4(b) and adopted by California through R&TC §18407. California also recognizes state-specific listed transactions published in FTB Notice 2011-04, so a transaction that is not listed federally can still be listed in California.
The form must be filed separately from the income tax return and sent directly to the FTB Abusive Tax Shelter Unit. Filing it on top of a Form 540, 100, or 565 does not satisfy the disclosure requirement — the Unit reviews 3702s on a separate track. Taxpayers (not advisors) who participate in reportable transactions file FTB Form 8886 with their return, which is a different obligation that often runs in parallel.
Before You Start: Documents and Information You Need
Filing FTB 3702 without your supporting file ready is the fastest way to a rejection letter. Gather every item below before you open the PDF, because the form’s 60-day clock under R&TC §18648(d) does not pause while you hunt for documents.
- Your federal Form 8918 and Reportable Transaction Number (RTN). The IRS issues a 9-digit RTN within 60 days of the federal filing, and California requires that exact number on Line 2a. Without it, the FTB cannot match your disclosure to the federal record and will treat the filing as incomplete.
- The transaction’s promotional materials, written opinions, and engagement letters. California requires you to attach a complete copy of every document you provided to the taxpayer. Missing one opinion letter is enough to trigger a $15,000 incomplete-disclosure penalty.
- Your firm’s California Secretary of State entity number or your individual SSN/ITIN. The form needs the advisor’s tax ID, not the taxpayer’s. Mixing the two is the single most common Box 1 error.
- A list of every California taxpayer you advised on the transaction. California uses this list to cross-check Form 8886 filings from the participants. Leaving a participant off triggers a separate $10,000 list-maintenance penalty under R&TC §18648.5.
- The exact date you became a material advisor. This is the date the threshold was crossed, not the date the transaction closed. The 60-day filing window runs from this date.
- Gross income received from the transaction. Report the cumulative fee, not the per-client fee. The number drives the threshold analysis on Part II.
- Copies of all related federal disclosures. If a co-advisor filed Form 8918 and you signed a designation agreement, attach that agreement.
- A short, plain-English description of the expected tax benefits. The Abusive Tax Shelter Unit reads Part III narratives first, so a vague description guarantees a follow-up letter.
- Your firm’s California professional license number, if any. CPAs licensed by the California Board of Accountancy and attorneys licensed by the State Bar of California must enter the license number in Part V.
- A signed Power of Attorney (FTB 3520-PIT or FTB 3520-BE) if someone else signs on your behalf.
Where to Get the Form and How to Access It
Download the current revision from the FTB Forms and Publications search by typing “3702” into the search bar. The PDF is fillable in Adobe Acrobat Reader 11 or later, and the FTB recommends saving locally before typing because browser viewers strip the entered data on print.
You can also order paper copies by calling the FTB at 800-338-0505 (option 2 for forms), and large preparer firms can request bulk shipments through the FTB Tax Practitioner Services line. Paper requests take 7–10 business days, so the website download is the right call when the 60-day clock is already running.
For e-file practitioners, the form is available inside most professional software packages (Lacerte, ProSystem fx, Drake, UltraTax) under the “California — Disclosure Forms” menu, but the software does not transmit FTB 3702 with the return. The form must still be printed, signed, and mailed or uploaded separately, because the FTB’s e-file schema does not currently accept 3702 attachments.
If you are filing under a deadline crunch, the MyFTB practitioner portal accepts secure document uploads and will date-stamp the submission the day you upload, even after business hours. Always confirm the revision date printed in the lower-left corner of page 1 reads “REV 2025” before you file — using a stale revision is grounds for the FTB to reject the filing as nonconforming under California Code of Regulations Title 18 §18648.
Step-by-Step: How to Fill Out FTB 3702 Line by Line
Work through the form in printed order. Each box has its own quirks, and skipping ahead almost always produces a Part V certification that contradicts an earlier line.
Box “Initial Year Filer” (top of page 1)
This checkbox asks whether this is the first time you are disclosing this specific transaction to California. Check the box only if no prior FTB 3702 has ever been filed for this transaction by you or any co-advisor.
To answer, place an “X” in the box if true; leave blank otherwise. There is no “yes/no” option — the box is a single mark.
For example, Maria Lopez, a CPA filing her first 3702 for a syndicated conservation easement, marks an X in the “Initial Year Filer” box.
The most common edge case is a supplemental filing. If you previously filed but a new fact has emerged (additional fee received, new participant added), do not check Initial Year Filer; instead, check the “Supplemental Disclosure” box on Line 4.
A common mistake is checking Initial Year Filer on every annual update. The consequence is that the Abusive Tax Shelter Unit treats each filing as a brand-new transaction and may open duplicate case files against you.
The misconception filers carry is that “initial year” means the tax year of the transaction. It does not — it means the first 3702 ever filed by you for this transaction, regardless of tax year.
Line 1 — Material Advisor Information (Name, Address, ID Number)
Line 1 collects the advisor’s legal name, mailing address, and California or federal tax ID. The FTB cross-checks this block against the California Secretary of State business search and IRS records.
Enter your full legal name on Line 1a (use the name on your CPA license or law license, not a DBA), the mailing address on Line 1b in standard USPS format, and the FEIN or SSN on Line 1c with no dashes.
For example, Jonathan Kim, EA enters “JONATHAN KIM, ENROLLED AGENT” on 1a, “1450 Mission Street, Suite 220, San Francisco, CA 94103” on 1b, and “412-55-7788” on 1c.
A frequent edge case is multi-member firms. If the material advisor is a partnership or LLC, use the entity’s FEIN, not any partner’s SSN. Sole practitioners use SSN.
The most common mistake is entering the taxpayer’s information instead of the advisor’s. The consequence is automatic rejection because the FTB will read it as a participant disclosure and bounce it back, restarting the 60-day window.
A misconception is that a P.O. Box is acceptable. California requires a physical street address for service of process; a P.O. Box alone triggers a request-for-correction letter and a 30-day cure period.
Line 2 — Reportable Transaction Number (RTN)
Line 2 captures the 9-digit RTN issued by the IRS after a federal Form 8918 filing. The number ties the California disclosure to the federal record.
Enter the RTN exactly as issued, with no dashes or letters, in the format 123456789. If the IRS has not yet issued the RTN, write “PENDING” and attach a copy of the federal Form 8918 transmittal.
For example, the Anderson Tax Group enters “201524316” because that is the RTN the IRS assigned to the loss transaction they organized.
The edge case is a California-only listed transaction (those in FTB Notice 2011-04) that has no federal counterpart. In that case write “CA-ONLY” in the box and identify the FTB Notice on Line 3.
A common mistake is transposing two digits. The consequence is that the disclosure is treated as filed for a different transaction, which may itself be unrelated to the current advisor — leading to misdirected correspondence and a missed cure period.
The misconception is that the RTN is the same as the IRS Employer Identification Number or the California entity number. It is neither — the RTN is a unique 9-digit identifier issued only after Form 8918 processing.
Line 3 — Category of Reportable Transaction
Line 3 asks you to identify which of the five reportable transaction categories applies. The categories are defined in Treas. Reg. §1.6011-4(b).
Check all that apply: 3a Listed Transaction, 3b Confidential Transaction, 3c Contractual Protection, 3d Loss Transaction, 3e Transaction of Interest. Multiple boxes are common because a single transaction can fall into more than one category.
For example, Sarah Chen, a promoter of a §165 loss strategy, checks both 3a (Listed) and 3d (Loss) because the IRS designated the strategy a listed transaction in Notice 2017-10.
The edge case is a transaction that California treats as listed but the IRS does not. Check 3a and identify the controlling FTB Notice in the description box on Line 5.
A frequent mistake is checking only 3d (Loss) when the transaction is also listed. The consequence is the higher $100,000 listed-transaction penalty under R&TC §19182.5 still applies because California penalizes by the most serious category, but the disclosure is treated as incomplete.
The misconception is that “Confidential” means the advisor’s work product is confidential. It actually means the advisor imposed a confidentiality condition on the taxpayer regarding the tax treatment — a much narrower test under Treas. Reg. §1.6011-4(b)(3).
Line 4 — Type of Filing (Initial / Supplemental / Protective)
Line 4 distinguishes initial disclosures from supplemental or protective filings. The choice drives how the Abusive Tax Shelter Unit routes your file internally.
Check 4a Initial, 4b Supplemental, or 4c Protective. A protective disclosure is appropriate when you are unsure whether the transaction is reportable but want to lock in penalty protection under R&TC §19164.5.
For example, David Park’s firm files a protective disclosure on a §831(b) micro-captive arrangement because Notice 2016-66 status was uncertain in their facts; they check 4c.
The edge case is amending an earlier protective filing into a definitive one. File a new 3702 with 4b Supplemental checked and reference the earlier RTN.
The most common mistake is leaving Line 4 blank. The consequence is that the FTB defaults the filing to “Initial” and may open a duplicate case if a prior 3702 already exists.
The misconception is that a protective disclosure admits the transaction is reportable. It does not — California treats a properly captioned protective disclosure as conditional, and it preserves both your filing position and the taxpayer’s penalty protection.
Line 5 — Description of the Reportable Transaction
Line 5 is the narrative space where you describe what the transaction does and why it generates the claimed tax benefits. The Abusive Tax Shelter Unit reads this first.
Write a plain-English description in 250 words or fewer. Cover what the structure is, who the parties are, what the expected California tax benefits are, and which Code sections produce those benefits.
For example, the Anderson Tax Group writes: “This transaction is a syndicated conservation easement in which investors acquire LLC interests in a Georgia partnership. The partnership donates a perpetual easement and claims a §170(h) deduction. California investors claim a corresponding deduction on Schedule CA flowing from federal AGI.”
The edge case is a transaction with multiple steps occurring across tax years. Describe the steps in chronological order with dates, because the FTB cross-references the steps against participant Forms 8886.
A frequent mistake is copying the federal Form 8918 description verbatim without adding California-specific details. The consequence is that the Unit issues a development letter asking how the structure interacts with R&TC §17024.5 conformity, costing you 30–45 days.
The misconception is that vague descriptions reduce risk. They actually invite scrutiny — a thin Part III narrative is the single biggest predictor of audit selection per the FTB’s Tax Shelter Annual Report.
Line 6 — Expected Tax Benefits
Line 6 quantifies the California tax benefits the transaction is expected to generate for participants. The number drives both materiality and penalty exposure.
Enter the aggregate expected California tax benefit across all participants in dollars, with no commas. If unknown, enter your best good-faith estimate and note “ESTIMATE” in the margin.
For example, Sarah Chen enters “4750000” because her loss strategy is projected to deliver $4.75 million in aggregate California tax reductions across her 12 California participants.
The edge case is a deferral-only benefit (timing difference). Enter the present value of the deferral using a 5% discount rate, the FTB’s published default for these calculations.
A common mistake is entering the federal benefit instead of the California benefit. The consequence is that the disclosure understates California exposure, which the FTB treats as a material misstatement triggering R&TC §19164 understatement penalties on the advisor.
The misconception is that “expected” means “promised.” It means reasonably anticipated under the structure as marketed, not guaranteed — but lowballing the number to avoid scrutiny is itself a separate violation.
Line 7 — Code Sections and Authorities Relied On
Line 7 lists every Internal Revenue Code section, California Revenue and Taxation Code section, regulation, and ruling the transaction relies on. The list signals to the FTB which legal theory drives the benefit.
List each authority on its own line, in the format IRC §170(h); R&TC §17201; Treas. Reg. §1.170A-14. Include private letter rulings only if you actually relied on one.
For example, Maria Lopez lists “IRC §170(h); Treas. Reg. §1.170A-14; IRS Notice 2017-10; R&TC §17201; FTB Legal Ruling 2011-01” because that is the full authority chain her opinion letter cited.
The edge case is reliance on a now-revoked authority. Disclose it anyway and note the revocation date — concealing reliance on revoked authority is itself a separate disclosure failure.
A frequent mistake is omitting state-level authorities. The consequence is the Unit assumes you treated California as fully conforming, which can produce a conformity adjustment notice within 6 months.
The misconception is that listing more authorities helps. Listing irrelevant authorities signals weak analysis and invites a development letter; list only what your opinion actually relied on.
Line 8 — Number of Participants
Line 8 reports how many participants entered the transaction during the disclosure period, broken into California residents, California-source nonresidents, and other.
Enter three integers in the boxes 8a (CA residents), 8b (CA-source nonresidents), and 8c (out-of-state with no California nexus). The sum should match Line 9.
For example, Jonathan Kim enters “7” in 8a, “3” in 8b, and “0” in 8c because all 10 of his clients have California-source income from the partnership.
The edge case is a participant who entered the transaction but later unwound it before the tax year closed. Count them and note the unwind in the Line 5 narrative.
A common mistake is reporting only paying clients. The consequence is undercounting — you must count every California participant you advised, even if a co-advisor billed them.
The misconception is that California-source nonresidents are out-of-state for 3702 purposes. They are not — anyone with California-source income from the transaction must be counted in 8b, because the FTB has audit authority over their California return.
Line 9 — Total Gross Income Received
Line 9 reports the cumulative gross income you received as a material advisor for this transaction across all participants and all years.
Enter the cumulative gross dollar amount with no commas, including fees, commissions, success fees, and indirect compensation. Use the threshold rules from Treas. Reg. §301.6111-3(b)(3) to determine what counts.
For example, the Anderson Tax Group enters “385000” because they billed $300,000 in opinion fees and received a $85,000 referral commission from the promoter.
The edge case is contingent fees not yet collected. Disclose the maximum potential fee and footnote that collection is contingent.
A frequent mistake is netting expenses. The consequence is understating gross income and triggering a Line 9 understatement penalty equal to 50% of the omitted amount under R&TC §19182.5(b).
The misconception is that fees paid to subcontractors don’t count. They do — gross income is the gross amount received before any pass-through to subcontractors or referral partners.
Part V — Material Advisor Signature and Certification
Part V is the certification block where the advisor (or an authorized representative) signs under penalty of perjury that the information is true, correct, and complete.
Sign in blue or black ink, print your name, enter your title, enter your CPA/Bar/EA number if applicable, and date the form using MM/DD/YYYY.
For example, Maria Lopez signs as “Maria Lopez, CPA,” enters CBA license “112233,” and dates the form “06/14/2026”.
The edge case is an advisor who is incapacitated. A POA holder may sign with FTB 3520-PIT or FTB 3520-BE attached.
The most common mistake is an unsigned form. The consequence is the FTB treats the disclosure as never filed, which means the 60-day window has run and the full $15,000 (or $100,000 listed) penalty applies under R&TC §19182.5.
The misconception is that an electronic signature suffices. The FTB requires a wet signature on FTB 3702 because it is filed outside the e-file system; typed signatures are rejected.
Three Filled-Out Examples Using Real Scenarios
Example 1 — Maria Lopez, CPA, Disclosing a Syndicated Conservation Easement (Listed Transaction)
Maria advised seven California investors on a syndicated conservation easement. She earned $385,000 in fees and the IRS issued an RTN within 45 days.
| Form Section | What Maria Enters |
|---|---|
| Initial Year Filer Box | X (first 3702 for this transaction) |
| Line 1 — Advisor Info | MARIA LOPEZ, CPA / 1450 Mission St, San Francisco, CA 94103 / SSN 412-55-7788 |
| Line 2 — RTN | 201524316 |
| Line 3 — Category | 3a Listed and 3d Loss checked |
| Line 4 — Filing Type | 4a Initial |
| Line 5 — Description | “Syndicated conservation easement under IRS Notice 2017-10; investors deduct §170(h) easement value flowing to California Schedule CA…” |
| Line 6 — Expected Benefit | 2,800,000 |
| Line 8 — Participants | 8a: 7 / 8b: 0 / 8c: 0 |
| Line 9 — Gross Income | 385000 |
| Part V — Signature | Maria Lopez, CPA / CBA 112233 / 06/14/2026 |
Example 2 — Anderson Tax Group, Outside Advisor to a California C-Corp Loss Transaction
Anderson Tax Group structured a §165 loss transaction for a California C-corp, billed $1.2 million, and the transaction generated $18 million in California losses.
| Form Section | What Anderson Tax Group Enters |
|---|---|
| Initial Year Filer Box | X |
| Line 1 — Advisor Info | ANDERSON TAX GROUP LLC / 350 California St, Suite 1900, San Francisco, CA 94104 / FEIN 88-1234567 |
| Line 2 — RTN | 202310477 |
| Line 3 — Category | 3d Loss Transaction checked |
| Line 4 — Filing Type | 4a Initial |
| Line 5 — Description | “Two-step asset transfer producing a §165 loss for a California C-corp; loss claimed on Form 100, Schedule J…” |
| Line 6 — Expected Benefit | 1620000 |
| Line 8 — Participants | 8a: 1 / 8b: 0 / 8c: 0 |
| Line 9 — Gross Income | 1200000 |
| Part V — Signature | Robert Anderson, Managing Partner / Bar #189221 / 07/02/2026 |
Example 3 — Sarah Chen, Promoter of a Pass-Through Transaction of Interest
Sarah promoted a pass-through structure flagged as a transaction of interest. She advised 12 California LLC members and earned $640,000 across the engagement.
| Form Section | What Sarah Enters |
|---|---|
| Initial Year Filer Box | X |
| Line 1 — Advisor Info | SARAH CHEN ADVISORY INC / 9100 Wilshire Blvd, Beverly Hills, CA 90212 / FEIN 47-9988221 |
| Line 2 — RTN | PENDING (8918 filed 14 days ago) |
| Line 3 — Category | 3e Transaction of Interest checked |
| Line 4 — Filing Type | 4c Protective |
| Line 5 — Description | “Pass-through partnership structure with §752 basis-shifting features under Notice 2024-54…” |
| Line 6 — Expected Benefit | 4750000 |
| Line 8 — Participants | 8a: 9 / 8b: 3 / 8c: 0 |
| Line 9 — Gross Income | 640000 |
| Part V — Signature | Sarah Chen, EA / EA #00115522 / 05/20/2026 |
How to File the Completed Form
FTB 3702 must be sent separately from the income tax return to the Abusive Tax Shelter Unit. Filing it on the return does not satisfy R&TC §18648.
Mail (most common channel): Send the signed original plus all attachments to Abusive Tax Shelter Unit MS F340, Franchise Tax Board, P.O. Box 1673, Sacramento, CA 95812-1673. There is no filing fee. Use USPS Certified Mail with Return Receipt and keep the green card — the postmark date is the filing date under the California Mailbox Rule (R&TC §21027). Processing takes 30–60 days; the FTB confirms receipt by letter.
Private courier (FedEx/UPS) for street-address delivery: Send to Franchise Tax Board, Abusive Tax Shelter Unit MS F340, 9646 Butterfield Way, Sacramento, CA 95827. No fee; keep the courier tracking record as proof of filing. Same 30–60 day processing window.
MyFTB Secure Document Upload: Log into MyFTB, choose “Send Message,” select “Tax Shelter Disclosure,” and upload the signed PDF. No fee; the upload receipt is the proof of filing. Processing is faster — typically 21–30 days. Wet-signed scans are accepted here even though typed e-signatures are not.
Fax: Fax to 916-843-2060, the dedicated Abusive Tax Shelter Unit line. Keep the fax confirmation page with the time stamp and page count. No fee; processing 30–45 days. The FTB requires the cover sheet to read “FTB 3702 — MATERIAL ADVISOR DISCLOSURE.”
In person: Walk-in filing is accepted at the Sacramento Field Office, 3321 Power Inn Road, Suite 250, Sacramento, CA 95826 during business hours. Ask for a date-stamped copy as proof of filing.
What Happens After You File
The Abusive Tax Shelter Unit logs your filing within 10 business days and issues an Acknowledgment Letter with a California disclosure tracking number. Keep this letter — it is your proof of timely filing for any later penalty defense under R&TC §19182.5(d).
The Unit then routes the file to either the Conformity Bureau (for federally listed transactions) or the California-Specific Review Team (for FTB Notice 2011-04 transactions). Most filings sit in review for 90–180 days. During this time the Unit may issue a Development Letter asking for clarification or additional documents — your response window is 30 days from the letter date, and missing it converts the filing to “incomplete,” restarting the penalty clock.
If the Unit decides the transaction warrants audit, it forwards the file to the FTB Audit Division and the participants’ returns are flagged. The advisor’s filing itself is not audited — only the participants’ tax positions are — but advisor list-maintenance obligations under R&TC §18648.5 continue indefinitely, and the FTB can request the full participant list at any time on 20 business days’ notice.
If the Unit finds no issues, the file is closed administratively and you receive a closing letter. The closing letter does not waive penalties or audit rights against the participants — it only confirms the disclosure was complete. The IRS and FTB share information under R&TC §19551, so a federal audit can still trigger a California adjustment.
Mistakes to Avoid When Filling Out the Form
- Filing 3702 with the income tax return. The Abusive Tax Shelter Unit reviews 3702s separately, and a 3702 attached to a Form 100 is treated as never filed.
- Using the taxpayer’s tax ID on Line 1. This swap routes the disclosure to the wrong file and triggers an automatic rejection letter.
- Leaving the RTN field blank. Without an RTN or “PENDING,” the disclosure is incomplete and the 60-day clock continues to run.
- Checking only one Line 3 category when multiple apply. California assesses the highest-tier penalty regardless, but the disclosure is treated as defective.
- Skipping the Line 5 narrative or copying federal language. A boilerplate description draws a 30-day development letter.
- Reporting net fees instead of gross on Line 9. Netting triggers a 50% understatement add-on under R&TC §19182.5(b).
- Typed signature in Part V. The FTB requires wet ink; typed signatures are rejected and the filing is treated as void.
- Using a stale revision of the form. Pre-2024 revisions lack the Line 4c Protective box and are bounced back as nonconforming.
- Sending to the general FTB P.O. Box instead of MS F340. Mail sent to the wrong box can take 60+ days to reroute, blowing the 60-day window.
- Forgetting to attach federal Form 8918. The FTB requires a complete copy; missing it converts the filing to “incomplete.”
- Counting only paying clients on Line 8. Every California participant counts, even pro bono ones.
- Failing to keep the Certified Mail receipt. Without proof of mailing, you cannot invoke R&TC §21027 to defeat a late-filing penalty.
Do’s and Don’ts
- Do download the live PDF from the FTB site each filing — revisions change yearly and the forms page is the only source guaranteed current.
- Do mail by Certified Mail with Return Receipt — the green card is the only universally accepted proof of timely filing.
- Do keep a complete client copy with attachments — the FTB can request the full file under R&TC §18648.5 for up to 7 years.
- Do file a protective disclosure when in doubt — protective filings preserve the taxpayer’s reasonable-cause defense under R&TC §19164.5.
- Do describe California-specific tax effects in Line 5 — generic federal copy invites a development letter.
- Do sign in blue or black ink — colored or pencil signatures are routinely rejected.
- Don’t wait for the IRS to issue the RTN before filing — California’s 60-day clock runs independently of the IRS timeline.
- Don’t assume the federal 8918 satisfies California — the FTB requires a separate state filing.
- Don’t put the form in the same envelope as the return — Unit clerks separate them, and missorts happen.
- Don’t use a P.O. Box on Line 1b — California requires a physical street address.
- Don’t redact participant identifiers — the FTB requires unredacted disclosure under R&TC §18648(c).
- Don’t rely on software auto-fill for Line 7 authorities — software pulls federal-only authorities and omits R&TC sections.
Pros and Cons of Filing on Your Own vs. With Tax Counsel
| Filing Pro Se | Filing With Tax Counsel |
|---|---|
| Costs $0 in professional fees | Costs $5,000–$25,000 depending on complexity |
| Full control over the Line 5 narrative | Counsel drafts narrative under attorney-client privilege |
| Faster turnaround if you know the form | Adds 1–2 weeks for review |
| No reliance defense if audited | Creates a reasonable-cause defense under R&TC §19164.5 |
| Risk of overlooking state-only listed transactions | Counsel cross-checks FTB Notice 2011-04 |
Five reasons to file pro se: lower cost; speed; familiarity with your own facts; simple loss transactions don’t need counsel; protective filings are template-driven. Five reasons to retain counsel: privilege protection; reasonable-cause defense; complex multi-state structures; participant indemnity clauses in your engagement letter; six-figure penalty exposure where a $10,000 legal fee buys real defense value.
Form 8918 vs. FTB 3702 at a Glance
| Federal Form 8918 | California FTB 3702 |
|---|---|
| Filed with the IRS Office of Tax Shelter Analysis | Filed with the FTB Abusive Tax Shelter Unit MS F340 |
| Covers any U.S. taxpayer participation | Required only when a California taxpayer is involved |
| RTN is issued by the IRS within 60 days | Uses the IRS-issued RTN on Line 2 |
| Penalty: $50,000/$200,000 under IRC §6707 | Penalty: $15,000/$100,000 under R&TC §19182.5 |
| Wet or e-signature accepted via designated channels | Wet signature only |
| Categories defined by Treas. Reg. §1.6011-4 | Adopts federal categories plus FTB Notice 2011-04 listings |
FAQs
Is FTB 3702 the same form as IRS Form 8918?
No. FTB 3702 is California’s separate state disclosure for material advisors under R&TC §18648, while Form 8918 is the federal version. Both are required when a California taxpayer participates.
Do I file FTB 3702 with my income tax return?
No. It must be mailed or uploaded separately to the Abusive Tax Shelter Unit at MS F340; filing it with a Form 100 or 540 is treated as never filed.
What if the IRS has not yet issued the Reportable Transaction Number?
Yes, you can still file. Write “PENDING” on Line 2 and attach a copy of the federal Form 8918 transmittal — the FTB updates the file when the RTN issues.
Do I check Line 3a if California lists the transaction but the IRS does not?
Yes. Check 3a Listed and identify the controlling FTB Notice (such as Notice 2011-04) in the Line 5 description.
Is a typed electronic signature acceptable in Part V?
No. The FTB requires a wet ink signature in blue or black; typed or DocuSign signatures are rejected and the disclosure is treated as void.
Should I use a P.O. Box on Line 1b?
No. California requires a physical street address for service; a P.O. Box alone produces a request-for-correction letter and a 30-day cure window.
Do I count nonresident participants on Line 8?
Yes, if they have California-source income from the transaction. Enter them in box 8b — they trigger California audit jurisdiction even without residency.
Is there a filing fee for FTB 3702?
No. California does not charge a fee for filing FTB 3702 through any channel — mail, fax, courier, in-person, or MyFTB upload.
Can my attorney sign Part V for me?
Yes, with a properly executed FTB 3520-PIT or FTB 3520-BE Power of Attorney attached to the filing.
Does filing a protective disclosure on Line 4c admit the transaction is reportable?
No. A protective disclosure is conditional and preserves your filing position while locking in penalty protection under R&TC §19164.5 for the participants.
Is the 60-day filing window paused if I am awaiting documents from the taxpayer?
No. R&TC §18648(d) does not provide a tolling exception; file with whatever you have and supplement later with a 4b Supplemental filing.
Do I report gross fees or net fees on Line 9?
Yes, gross — never net. Reporting net of subcontractor pay-throughs triggers a 50% understatement penalty under R&TC §19182.5(b).
What is the penalty for a missed FTB 3702 filing?
Yes, penalties apply: $15,000 per non-listed reportable transaction and $100,000 per listed transaction under R&TC §19182.5, per advisor.
Does an FTB closing letter waive participant audit risk?
No. A closing letter only confirms the advisor’s disclosure was complete; participants’ returns can still be audited under California’s standard statute of limitations.
Related reading
- How to Fill Out California Form 541 (w/Examples) + FAQs
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