PFIC Mark-to-Market Election: 2026 Guide for US Expats

I still remember the knot in my stomach when my tax preparer first said “PFIC” over a crackling Skype call. I’d been living in Berlin for three years, faithfully investing in a German mutual fund called DWS Top Dividende—a perfectly normal choice for any local. But for a US expat, that fund was a ticking tax bomb. The IRS classifies most non-US mutual funds as Passive Foreign Investment Companies (PFICs), and the default tax treatment is brutal: any distribution or gain is taxed at the highest ordinary income rate, plus interest penalties, as if you’d been deferring tax for years. In my case, a modest $12,000 gain over five years would have been hit with an extra $4,800 in phantom tax and interest.

The saving grace? The PFIC mark-to-market election. This election lets you treat your PFIC shares as if you sold and repurchased them at fair market value each year. You pay ordinary income tax on the annual gain (if any) but can deduct losses against prior gains. It’s not a cure-all, but for expats holding marketable foreign funds, it’s often the most practical path out of the PFIC labyrinth.

What Is the PFIC Mark-to-Market Election—and Who Should Use It?

The mark-to-market election is codified in Internal Revenue Code Section 1296. It allows you to annually report the change in fair market value of your PFIC shares as ordinary income or loss. Unlike the Qualified Electing Fund (QEF) election, which requires the foreign fund to provide you with a detailed annual income statement (often impossible for non-US funds), the mark-to-market election only needs the fund’s year-end market price—something you can usually get from your brokerage statement.

Eligibility is key: the PFIC stock must be marketable, meaning it’s traded on a qualified exchange (like the Frankfurt Stock Exchange, London Stock Exchange, or NYSE). Most publicly traded foreign mutual funds, ETFs, and closed-end funds qualify. If your fund is not publicly traded (e.g., a private equity fund or a small local investment club), you cannot use mark-to-market. In that case, you’d need the QEF election or face the default excess distribution rules.

I’ve personally used this election for a European ETF tracking the MSCI World index. The fund was listed on Xetra, so I could easily pull the year-end closing price from my broker’s portal. That simplicity is the election’s biggest draw—you don’t need the fund’s cooperation.

Step-by-Step Guide to Making the PFIC Mark-to-Market Election in 2026

Here’s the exact process I followed to make the election for the 2026 tax year (filed in 2027):

1. Confirm the fund is a PFIC and marketable. Use Form 8621 instructions or check with a tax pro. Most foreign mutual funds are PFICs by default.
2. Gather year-end fair market value. Get the closing price on December 31, 2026, from your brokerage or a public exchange.
3. Prepare Form 8621. You’ll file this form with your 2026 US tax return. On Part VI, check the box for “Mark-to-Market Election under Section 1296.” Report the fund’s adjusted basis and FMV.
4. Calculate the gain or loss. Gain = FMV minus adjusted basis. Loss = adjusted basis minus FMV (but loss is only deductible to the extent of prior mark-to-market gains).
5. File by the due date (including extensions). For 2026, the original due date is April 15, 2027. If you miss it, you can still request an extension or use the IRS’s simplified catch-up procedures under Revenue Procedure 2022-40—but act fast to avoid penalties.
6. Repeat annually. You must file Form 8621 every year the election is in effect. Failure to do so can revoke the election, and you’ll need IRS permission to re-elect.

When I first did this, I made a rookie mistake: I forgot to attach a statement explaining the election. The IRS instructions are clear—include a separate statement saying “Mark-to-Market Election under Section 1296.” I had to file an amended return, which delayed my refund by three months. Don’t skip that step.

Real Tax Consequences: What You’ll Pay (and Save) with Mark-to-Market

Let’s run a concrete example. Suppose you bought 100 shares of a German ETF on January 1, 2026, for $10,000. On December 31, 2026, the FMV is $12,500. Under mark-to-market, you report $2,500 of ordinary income on your 2026 return. No capital gains rates—it’s taxed at your marginal rate (say 24% for a single filer earning $80,000). That’s $600 in tax.

Now, in 2027, the fund drops to $11,000. You report a $1,500 loss. But here’s the catch: losses are only deductible to the extent of prior mark-to-market gains. Since you had $2,500 in gains in 2026, you can deduct the full $1,500 loss against that gain, reducing your 2027 income by $1,500. If you had no prior gains, the loss would be disallowed.

Compare this to the default PFIC rules: without the election, that $2,500 gain in 2026 would be treated as an excess distribution, taxed at the highest marginal rate (37% in 2026) plus interest—costing roughly $1,200 or more. The mark-to-market election saves you from that interest penalty and caps the tax at your ordinary rate.

One more nuance: if you sell the fund, any gain above the last reported FMV is also ordinary income. But you avoid the deferred tax nightmare.

Common Mistakes Expats Make—and How to Avoid Them

Based on my own stumbles and what I’ve seen in expat forums, here are the top pitfalls:

• Forgetting to make the election on a timely return. If you file late without the election, you’re stuck with default PFIC rules. File on time, or use the catch-up procedure immediately.
• Assuming all foreign funds are PFICs. Some foreign corporations are not PFICs (e.g., active businesses). Check the fund’s income and asset composition—if less than 75% of income is passive and less than 50% of assets produce passive income, it may not be a PFIC.
• Not tracking adjusted basis. Your basis changes each year due to mark-to-market adjustments. Keep a running spreadsheet. I use a simple Google Sheet with columns for year, FMV, gain/loss, and cumulative basis.
• Ignoring the loss limitation. Don’t assume you can deduct a loss in a down year. You can only offset prior gains, not other income.
• Assuming the election covers all PFICs. You must make a separate election for each PFIC. One election does not apply to all.

Here’s a pro tip: if you hold multiple foreign funds, prioritize the election for those with the largest unrealized gains. The election locks in the annual gain, but for a fund that’s down, it might not be worth the paperwork hassle.

Frequently Asked Questions

Can I make a PFIC mark-to-market election if my foreign fund is not publicly traded?

No. The election is only available for PFIC stock that is “marketable”—typically traded on a qualified exchange like the NYSE or a major foreign exchange. Non-marketable PFICs require the QEF election or default excess distribution rules.

What happens if I miss the deadline to file the mark-to-market election?

You may request a private letter ruling or use the IRS’s simplified catch-up procedures under Revenue Procedure 2022-40, but penalties and interest may apply. Act quickly—don’t wait more than a year.

Do I have to report the mark-to-market election every year?

Yes, you must file Form 8621 annually for each PFIC for which the election is in effect, reporting the mark-to-market gain or loss. Failure to file can revoke the election.

Is the gain from a mark-to-market election taxed at capital gains rates?

No, mark-to-market gains are treated as ordinary income, not capital gains. Losses are deductible only to the extent of prior mark-to-market gains.

Can I use mark-to-market for a foreign mutual fund that is a PFIC?

Yes, if the fund is marketable (e.g., listed on a major exchange). Many foreign mutual funds qualify. Check the fund’s classification or consult a tax professional.

Practical Takeaway

The PFIC mark-to-market election isn’t a magic wand—it turns a catastrophic tax penalty into a manageable annual ordinary income tax. If you’re a US expat holding a marketable foreign fund, this election is likely your best bet. File Form 8621 on time, keep your basis records, and don’t assume every foreign fund is a PFIC. A few hours of paperwork can save you thousands in penalties.