Form 8621 · §1291
§1291 Excess Distribution Guide
The most punitive PFIC regime. Technical guide to pre-PFIC periods, excess distribution allocation, and the functional currency two-step.
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FOR U.S. PFIC FILERS & TAX PROFESSIONALS
Form 8621 Filing Guide: PFIC Rules, Calculation & Country Risks
PFIC rules are among the most punitive areas of the U.S. tax code. This site focuses on identifying PFIC
exposure and applying Form 8621 reporting rules correctly.
We cover §1291 excess distributions, MTM, and country-specific PFIC structures — with the calculation logic
behind accurate Form 8621 reporting.
This site is designed for CPAs, EAs, and U.S. taxpayers dealing with PFIC reporting under Form 8621.
Global
PFIC Coverage
§1291 & §1296
Calculation Logic
Updated
for 2026 Filing
Knowledge Architecture
PFIC Risk Identification & Form 8621 Calculation Logic
Country-specific PFIC risk analysis combined with the calculation logic behind accurate Form 8621 reporting.
🌍
Country Guides
Country-specific PFIC risk for U.S. persons holding foreign funds, ETFs, and investment accounts.
See which accounts trigger PFIC reporting and where hidden risks exist.
New Zealand KiwiSaver
Passive Foreign Investment Co
Foreign Mutual Funds
US Expat Compliance
Explore PFIC Country Risks →
🔢
Form 8621 Calculation
Form 8621 calculation for PFIC reporting, including §1291 excess distributions, MTM, and interest
calculations.
Understand how the numbers are actually computed — not just the rules.
§1291 Excess Distribution
Line 15e Marketable Stock
Line 16a Statement
QEF Annual Inclusion
MTM Election
Interest Charge
Explore Form 8621 Calculation →
High-Risk Jurisdictions
PFIC by Country: Canada, New Zealand, UK, Australia, Germany, Switzerland, India, Israel, Singapore, Japan, China, Korea, Taiwan, Hong Kong
Explore specific foreign account PFIC risks and Form 8621 application guides.
🇳🇿
New Zealand
KiwiSaver · PIEs
High
🇨🇦
Canada
TFSA · RESP · QEF
High
🇬🇧
United Kingdom
ISA · OEICs · Trusts
High
🇮🇪
Ireland
UCITS ETFs · VWRA · IWDA
High
🇫🇷
France
Assurance-Vie · PEA · UCITS
High
🇩🇪
Germany
ETF-Sparplan · VWCE · Depot
High
🇨🇭
Switzerland
Pillar 3a · Swissquote · SICAVs
High
🇦🇺
Australia
Superannuation · SMSFs
High
🇮🇳
India
Mutual Funds · SIPs
High
🇮🇱
Israel
Keren Hishtalmut · Kupat Gemel
Very High
🇸🇬
Singapore
CPFIS · SRS · UCITS ETFs
High
🇯🇵
Japan
iDeCo · NISA · eMAXIS Slim
Severe
🇨🇳
China
余额宝 · 微信理财 · 公募基金
Very High
🇰🇷
South Korea
TIGER 133690 · KODEX 200
High
🇹🇼
Taiwan
0050 · 0056 · 00878
High
🇭🇰
Hong Kong
MPF · Tracker Fund (2800) · Unit Trusts
High
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Browse All Countries
Global PFIC Index
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Form 8621 Calculation — Stop Guessing
Accurate §1291 interest and MTM calculations — structured for real Form 8621 reporting.
Latest Resources
PFIC Guides & Form 8621 Resources
Form 8621 · IRC §1296
PFIC Mark-to-Market (MTM) Guide
Technical reference for §1296 MTM: election rules, unreversed inclusions (UNI), §1296(l) step-up for immigrants, and Part IV mapping.
Read Technical Guide →
Form 8621 · §1295
§1295 QEF Election & Calculation Guide
The preferred election that eliminates lookback interest. Technical guide to Annual Information Statements (AIS) and cost basis tracking.
Read Technical Guide →
PFIC 101 · IRC §1297
What is a PFIC? The Asset & Income Tests
The legal definition of a Passive Foreign Investment Company. How foreign ETFs, mutual funds, and pensions become PFICs.
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Case Study · Simulation
10-Year Case Study: §1291 vs. MTM Outcomes
A real-world simulation comparing the 10-year tax drag of the default regime against the Mark-to-Market election. Same fund, same gain.
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Form 8621 · Case Study
First-Year Form 8621 & PFIC Guide for New U.S. Tax Residents
First-year PFIC election strategy for new U.S. tax residents with foreign ETFs. Compare QEF, MTM, and Section 1291 Form 8621 outcomes.
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IRS Compliance · Amnesty
PFIC Streamlined Filing & Statute of Limitations
Handling late Form 8621. Understanding how unfiled PFIC forms keep the statute of limitations open for the entire tax return.
Read Technical Guide →
Expat Tax · Professionals
EA vs CPA vs Tax Attorney for Expat Taxes: PFIC & FBAR
Which tax professional do you actually need? Unbiased comparison of EA, CPA, and Tax Attorney for PFIC, FBAR, and Streamlined filing.
Read Technical Guide →
Form 8621 · Line 15e
Line 15e: 15e(1)/15e(2) Split & FX Rules
A technical breakdown of the most complex line in the §1291 regime. Covering the functional-currency two-step and first-year exceptions.
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Form 8621 · Line 15f
Line 15f: PFIC Gain or Loss, USD Basis & No Netting
How to compute PFIC disposition gain or loss in USD, separate gain lots from loss lots, and carry positive Line 15f amounts to Line 16.
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Form 8621 · Line 16a
Form 8621 Line 16a Statement: §1291 Calculation & Audit Risk
The "Show Me Your Work" standard: comprehensive guide to daily allocation, per-lot tracking, and §6621 interest charge mechanics.
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Form 8621 · Compliance
Filing Exemptions: When You Don't Need Form 8621
Analysis of the $25,000 / $50,000 de minimis exceptions and pension treaty protections that eliminate filing requirements.
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Form 8621 · Line 15b
Line 15b: Prior-Year PFIC Distributions
How Line 15b fits the §1291 excess-distribution test, including prior-year income history and base-period workpapers.
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Form 8621 · Line 15e
Why Line 15e May Not Equal 15a Minus 15d
Why §1291 lot-level rules, reinvestments, and first-year holding periods can make aggregate Line 15e appear mismatched.
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Form 8621 · Tax Software
How to File Form 8621 With TurboTax
What TurboTax can and cannot handle for PFIC reporting, and why Form 8621 calculations often need external workpapers.
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Form 8621 · Statute Risk
Missed vs Defective Form 8621 Filing
How missed and defective Form 8621 filings affect §6501 statute exposure, reasonable cause, and PFIC audit risk.
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PFIC · §1291 Interest
PFIC §1291 Interest for Form 8621
How due dates, §7503 timing rules, daily compounding, and Line 16c interact in PFIC excess-distribution calculations.
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PFIC Practice · Professionals
Why Tax Experts Tell Clients to Sell PFICs
Why PFIC engagements are expensive, hard to bill, and audit-sensitive, and why locked funds create a different problem.
Read Practice Guide →
Form 8621 · AI Benchmark
ChatGPT vs Gemini vs Claude: Form 8621 Tax Math Test
Can generative AI models solve complex PFIC calculations? We benchmarked ChatGPT, Gemini, and Claude against standard Form 8621 §1291 tax scenarios.
Read Case Study →
Form 8621 · Cleanup
Discovered a PFIC? Form 8621 Compliance Guide
A technical roadmap for newly discovered PFIC positions, back-year Form 8621 review, §1291 exposure, and election cleanup options.
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PFIC · Fund of Funds
Fund-of-Funds PFIC Risk: Multiple Form 8621 Filings
Why one foreign account or platform line can hide multiple underlying PFICs, each requiring separate Form 8621 analysis.
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PFIC · §1291 Workpapers
Why Excel Fails PFIC §1291 Calculations
FIFO lots, §6621 interest, historical FX, and Line 16a statements make spreadsheet-only PFIC workpapers fragile and audit-sensitive.
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PFIC · Dispositions
PFIC Fund Switch & Section 1291: The Hidden Tax Trap
How changing funds inside a foreign account can become a PFIC disposition and create phantom §1291 gain.
Read Technical Guide →
PFIC · Currency
PFIC FX Rules: Form 8621 Currency Translation
Which exchange rates apply to PFIC basis, proceeds, distributions, and MTM values when preparing Form 8621.
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PFIC · Streamlined
Late PFIC Elections in Streamlined Filing
Why late Form 8621 cleanup usually does not automatically permit retroactive QEF or MTM elections, leaving §1291 as the default regime.
Read Technical Guide →
Disclaimer: This site provides global PFIC compliance guides, cross-border risk analysis, and
the algorithmic architecture powering our calculation engines. We engineer tax compliance technology; we do
not
prepare tax returns. All content is strictly for technical reference and does not constitute official tax
advice. Verify all tax positions independently.
Current as of May 2026 · Based on Form 8621 (Rev. 12/2025)
Current as of May 2026 · Based on Form 8621 (Rev. 12/2025)