In-depth analysis of IRS Form 3520 penalties, reasonable cause waiver statements under IRC § 6039F and § 6677, recent court rulings on tax software (TurboTax) reliance, and IRS procedural changes.
Background on reasonable-cause provisions and initial late-filing attachments. Applicability and outcomes depend on the facts, current law, and IRS procedures.
Federal court ruling confirms that taxpayers who relied in good faith on TurboTax prompts stating foreign gifts were non-reportable state a plausible Reasonable Cause Defense against § 6039F penalties.
Summary of primary judicial opinions and statutory provisions governing Form 3520 penalty waivers.
| Case / Authority | Citation & Forum | Core Holding / Principle |
|---|---|---|
| Huang v. United States | No. 24-cv-06298-RS (N.D. Cal. 2025) | Good-faith reliance on TurboTax prompts stating foreign gifts are non-reportable plausibly supports reasonable cause defense under § 6039F. |
| Zhang v. United States | No. 24-cv-03487-AMO (N.D. Cal. 2026) | Sustained taxpayer refund suit challenging § 6039F penalty based on reasonable cause and § 6751(b) supervisory approval rules. |
| Olsen v. Commissioner | T.C. Memo. 2011-277 | Taxpayer using tax return preparation software in good faith who makes an isolated data entry or reporting error satisfies reasonable cause. |
| IRC § 6039F(c)(2) | 26 U.S.C. § 6039F(c)(2) | Statutory exception waiving foreign gift failure-to-file penalties upon showing of reasonable cause and lack of willful neglect. |
CrossBorderFiler formats preparer-entered information and, for supported initial late Part IV filings, an optional user-authored reasonable-cause statement. The software does not assess relief eligibility or select legal arguments.
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