QEF vs Mark-to-Market vs §1291: Which PFIC Election Should You Make?

You've confirmed you own a PFIC — a foreign mutual fund or ETF, very likely an Irish or Luxembourg UCITS. The next question is the one that actually determines your tax bill: under which of the three PFIC regimes will it be taxed? Get this right and a PFIC can be merely annoying; get it wrong and the same fund can cost you more in tax than it ever made.

This is a decision guide. We compare the three regimes — QEF (§1295), mark-to-market (§1296), and the default §1291 excess-distribution treatment — and give you a flow to follow for each fund you hold.

The three regimes at a glance

QEF (§1295): the cleanest result you usually can't have

A Qualified Electing Fund election makes the PFIC behave almost like a normal US fund: each year you include your share of the fund's ordinary earnings and net capital gain, and — crucially — the fund's long-term gains keep their capital-gain character. No interest charge, no excess-distribution spreading. For a long-term holding, QEF is generally the best of the three.

The AIS problem

The catch is fatal in practice for most expats: QEF requires a PFIC Annual Information Statement from the fund — a specific document telling you your share of ordinary earnings and net capital gain for the year. US-marketed PFICs sometimes provide one; ordinary European UCITS providers almost never do. No statement, no QEF. So while QEF is the textbook-best election, the funds most expats actually hold simply don't support it.

Mark-to-market (§1296): the realistic escape for listed ETFs

If your PFIC is marketable — regularly traded on a qualifying exchange, which most listed UCITS ETFs are — you can elect mark-to-market. Each year you treat the increase in the fund's value as ordinary income, and decreases as ordinary losses (but only to the extent of previously-included MtM gains). It escapes the §1291 interest charge going forward, which is the whole point.

• Pro: available without any cooperation from the fund — you just need it to be exchange-traded. No AIS required.
• Pro: stops the punitive interest charge from compounding on a fund you want to keep.
• Con: you pay tax annually on unrealised gains — a cash-flow drag in up years.
• Con: everything is ordinary income; you lose the lower long-term capital-gains rate even on multi-year holds.
• Watch-out: electing MtM on an already-appreciated PFIC triggers a one-time §1291 'cleanup' on the built-in gain in the election year.

For the typical European UCITS ETF holder who can't get a QEF statement but does hold an exchange-traded fund, mark-to-market is usually the live choice versus exiting the position.

§1291: the punitive default you fall into by doing nothing

Make no valid election and you're in §1291 — the excess-distribution regime. On a sale or an 'excess' distribution, the gain is allocated rateably across your entire holding period; each prior year's slice is taxed at that year's highest ordinary rate; and an interest charge is added as though you'd underpaid in each of those years. The longer you held — especially an accumulating fund that distributed nothing — the worse it gets.

There is essentially no scenario where §1291 is chosen on purpose. It's what you end up with by accident. The reason to understand it is to know how much you're avoiding by electing — or by exiting early. Our free PFIC calculator models the excess-distribution charge so you can see, illustratively, what the default costs on your own holding.

A decision flow, per fund

Work through this for each PFIC separately — the right answer can differ fund by fund:

1. Does the fund issue a PFIC Annual Information Statement? If yes, electing QEF (ideally from year one) is usually the best outcome — stop here.
2. No AIS — is the fund marketable (regularly exchange-traded)? If yes, compare electing mark-to-market (keep and elect) against selling and reinvesting into US-domiciled funds. The §1291 estimator helps you size both.
3. Not marketable and no AIS? Your realistic options are to exit the position (absorb the §1291 hit once, then go clean) or keep it under §1291 and accept the compounding charge — usually you exit.
4. Either way, mind the timing. A first-year MtM or late QEF election on an appreciated PFIC triggers §1291 cleanup on the built-in gain, so model the election year before you commit.

Each elected or disposed PFIC is reported on its own Form 8621 — one per fund, per year. Start by confirming which holdings are even PFICs with the free PFIC checker, then model each one with the PFIC calculator.

How the §1291 estimator helps you choose

The decision between MtM-and-hold and sell-now usually comes down to one comparison: how much the §1291 interest charge will cost if you keep deferring, versus the tax of taking the gain today. The estimator lets you plug in your holding period, basis, and current value to see the directional §1291 cost — the number that tips you toward electing, exiting, or holding. It's a planning aid, not a return preparer; the actual forms come when you build the return.

Authoritative sources

• IRS — About Form 8621
• IRS — Instructions for Form 8621 (QEF, mark-to-market, and §1291 mechanics)
• Cornell LII — 26 U.S. Code §1291 — Excess distributions & interest
• Cornell LII — 26 U.S. Code §1295 — Qualified electing fund
• Cornell LII — 26 U.S. Code §1296 — Mark-to-market election

Shaped by recurring election questions from US-expat investors on r/USExpatTaxes. Last reviewed June 2026 — verify availability and current rates for your specific funds before electing.