IRC 1296: The Mark-to-Market Election for PFIC Stock

The mark-to-market election for PFIC stock, made under IRC Section 1296, lets a U.S. shareholder of a passive foreign investment company recognize gains and losses on the stock every year as ordinary income, sidestepping the punitive default regime that would otherwise apply. The trade-off is real: you give up any chance at long-term capital gains rates, and the election is only available if the PFIC stock is “marketable.” For many Americans holding foreign mutual funds or ETFs, it is still the best exit from a tax regime that layers interest charges on top of top-bracket rates.

The default rules under Section 1291 treat any excess distribution or gain on sale as if it had been earned ratably across your entire holding period, tax each slice at the highest statutory rate for that year, and tack on a non-deductible interest charge running from the original due date of every return in between.¹ An investor who held a foreign fund for a decade and sells at a gain can end up with an effective rate far higher than on a comparable domestic investment. Section 1296 exists to escape that machinery.

What Stock Qualifies for the Election

The election turns on one requirement: the PFIC stock must be marketable. Section 1296 defines marketable stock as stock regularly traded on a U.S. national securities exchange registered with the SEC (or the national market system under the Securities Exchange Act of 1934), or on a foreign exchange or market the Treasury Secretary has determined has adequate regulatory oversight and trading rules.²

The definition also reaches, to the extent provided in regulations, stock in a foreign corporation comparable to a U.S. regulated investment company whose shares are redeemable at net asset value, along with options on qualifying stock. A U.S. RIC that owns PFIC stock and itself offers shares redeemable at NAV can treat that PFIC stock as marketable.

Where investors get stuck is with holdings that don’t meet either test. Privately held foreign funds, hedge funds without exchange-listed shares, and foreign insurance wrappers typically fail the marketable stock requirement. If your PFIC stock isn’t on a qualifying exchange and doesn’t fit one of the regulatory categories, the MTM door is closed.

Two boundaries worth flagging. PFIC stock held inside an IRA, 401(a), 403(b), 529, or similar tax-exempt account isn’t your PFIC stock for these purposes; the tax-exempt entity is treated as the shareholder, so no MTM election is available or needed.³ And if the same foreign corporation is both a PFIC and a controlled foreign corporation with respect to you, Section 1297(d) generally turns off the PFIC rules for U.S. shareholders already subject to the CFC regime, so the question of electing MTM never arises.⁴

How to Make the Election

The election is made on Form 8621, filed with your income tax return for the year you want it to take effect. Treasury regulations allow the election on either an original return or an amended return, provided the amended return is filed on or before the due date, including extensions, for that tax year.⁵ The form asks for identifying information about the PFIC, its year-end fair market value, and your adjusted basis.

If you elect in your first year of ownership, the MTM regime applies from day one and no Section 1291 taint accumulates. Miss that first-year window and the election gets more expensive.

Making a Late Election: The Purge

You can elect MTM after already holding the stock under the default rules, but you must first “purge” the accumulated Section 1291 taint. That purge is taxed under the very regime you’re trying to leave.

Two purging routes exist. A deemed sale treats the stock as sold for fair market value on the first day the MTM election is effective; any gain runs through the Section 1291 excess distribution rules, interest charge included, and losses aren’t recognized. A deemed dividend is available only if the PFIC is also a CFC and you qualify as a U.S. shareholder of that CFC; you include your share of post-1986 earnings and profits as a dividend, again taxed under the Section 1291 machinery. Either purging election must be made on an original or timely-filed amended return.

The longer you have owned the stock, the larger the built-in gain and the more painful the purge. Investors who discover mid-holding that a foreign fund is a PFIC often face a real bill just to get onto MTM going forward.

The Annual Calculation

Once the election is in place, you treat the PFIC stock as sold on the last day of each tax year. Nothing actually changes hands.

If year-end fair market value exceeds your adjusted basis, you include the difference in gross income as ordinary income, and your basis increases by the amount included.² If value has dropped below basis, you can deduct the difference, but only up to your “unreversed inclusions.” Basis decreases by the amount actually deducted. Both the gains and the allowed losses are ordinary in character, not capital.

Ordinary income treatment is the price of admission. You forfeit long-term capital gains rates in exchange for escaping the interest charge. For a slowly appreciating position, or a taxpayer in a lower bracket, that can still beat Section 1291 by a wide margin.

The Unreversed Inclusions Cap

The loss limitation is where the MTM regime trips people up. Unreversed inclusions are the running total of prior MTM gains recognized on a specific PFIC stock, minus prior MTM losses deducted on that same stock. The statute also folds in amounts that would have been included under MTM but weren’t because Section 1291 was still in play.

A worked example makes it concrete. Say you’ve recognized $30,000 in cumulative MTM gains and previously deducted $8,000 in MTM losses on a given holding. Your unreversed inclusions stand at $22,000. If the stock drops this year and produces a $35,000 paper loss, you can deduct only $22,000 as ordinary loss. The other $13,000 goes nowhere.

Here is the detail that matters: the disallowed $13,000 does not reduce your basis. Basis only comes down by the $22,000 actually deducted. The disallowed loss is not a separate carryforward, but because basis stays above fair market value, the economic loss remains embedded in the position and shows up as a smaller gain (or larger allowed loss) later. If the stock never recovers and you sell, the same unreversed inclusions cap governs how much of the final loss gets ordinary treatment; anything above the cap becomes capital loss.

Selling the Stock

When you actually sell, gain or loss is computed against your continuously adjusted basis, which already reflects every prior year’s inclusions and deductions. In most cases, the sale simply captures the movement since the last year-end mark.

Gain on sale is ordinary. Loss on sale is ordinary up to remaining unreversed inclusions, and capital beyond that.²

When the Stock Stops Being Marketable

If the PFIC is delisted, or the exchange itself loses qualified status, the MTM election terminates at the end of the last tax year the stock qualified. From that point, Section 1291 takes over. Your basis entering the 1291 period is the fair market value on the last day MTM was in effect, and your accumulated unreversed inclusions carry forward to offset future gains or excess distributions under 1291.

If the stock later requalifies, you can elect MTM again, but the re-election is treated as a late election and requires purging the taint that built up in the gap.

MTM Compared to the QEF Election

MTM is not the only escape from Section 1291. The qualified electing fund election under Section 1293 is the other route, and it often produces a lower total tax bill.

Under QEF, you include your share of the PFIC’s ordinary earnings and net capital gains annually and pay tax at regular rates, with the net capital gain portion keeping long-term capital gains treatment. Amounts already included in income aren’t taxed again at sale. That preservation of capital gains rates is the QEF advantage.

The problem is availability. A QEF election requires the foreign corporation to furnish a PFIC Annual Information Statement computing its ordinary earnings and net capital gains under U.S. tax principles.³ Most foreign funds, especially those not marketed to Americans, don’t produce one and have no reason to start. Without the statement, QEF is off the table.

MTM asks only that the stock trade on a qualifying exchange; no cooperation from the fund is required. If your fund does issue an annual information statement, model both elections before choosing, because QEF is usually better. If it won’t, MTM is the realistic option.

The 3.8 Percent Net Investment Income Tax

MTM gains under Section 1296 also count as net investment income for the 3.8 percent NIIT if your modified adjusted gross income clears the threshold ($200,000 single, $250,000 married filing jointly). Treasury regulations specifically fold Section 1296 inclusions and deductions into net gain for NIIT purposes.⁶ Your effective rate on MTM gains can therefore reach the top ordinary rate plus 3.8 percent. Allowed MTM losses reduce net investment income symmetrically.

Revoking the Election

You cannot revoke the MTM election on your own. Consent from the IRS Commissioner is required, and if granted, the election stops applying as of the first tax year after consent.⁵ Simply skipping a year’s Form 8621 filing is not revocation and can trigger the default Section 1291 rules along with serious compliance exposure. If a QEF election has become available and you want to switch, request consent well before the filing deadline for the year the change should take effect.

Annual Reporting

Every U.S. person holding PFIC stock must file Form 8621 with the annual return. For MTM shareholders, the form reports year-end fair market value, adjusted basis, MTM gain or loss, and cumulative unreversed inclusions.⁷ The form is required even in years with no distributions and no gain or loss.

Skipping it has teeth. The IRS warns that taxpayers who fail to file required information returns may face penalties and criminal prosecution.³ The statute of limitations on the tax year generally stays open until PFIC information reporting is satisfied, so an unfiled Form 8621 can leave old years exposed indefinitely.

Records matter as much as the filing itself. Keep original cost basis, every annual MTM adjustment in both directions, the running unreversed inclusions total, and any amounts recognized on a purge. For a foreign fund held for decades, that tracking has to survive the entire holding period. Without it, the IRS can challenge your basis and you’ll have nothing to support a lower gain.

1
Office of the Law Revision Counsel. 26 U.S. Code 1291 – Interest on Tax Deferral
2
Office of the Law Revision Counsel. 26 U.S. Code 1296 – Election of Mark to Market for Marketable Stock
3
Internal Revenue Service. Instructions for Form 8621
4
Office of the Law Revision Counsel. 26 U.S. Code 1297 – Passive Foreign Investment Company
5
GovInfo. 26 CFR 1.1296-1 – Mark to Market Election for Marketable Stock
6
Federal Register. Net Investment Income Tax
7
Internal Revenue Service. Instructions for Form 8621