IITU (iShares S&P 500 Information Technology Sector UCITS ETF (Accumulating)) is a conventional Ireland-domiciled UCITS fund. Such funds commonly meet a §1297 passive-income or passive-asset test even when they track the US S&P 500 information-technology sector; confirm the vehicle's structure and annual facts before filing Form 8621.
Because it is an accumulating share class it pays you nothing along the way, which makes the default §1291 treatment more expensive, not less.
No card · free draft · a CPA typically charges $1,200–$3,000+ for Form 8621 work; Atamatax is a flat $499.
If IITU is confirmed as a PFIC, you may need a separate Form 8621. For supported inputs, Atamatax generates the official PDF with computed fields filled; review its notes and complete any remaining fields before filing outside Atamatax.
IITU pays out nothing, so there may be no cash distribution to enter in a §1291 excess-distribution calculation while you hold. Separate annual Form 8621 reporting can still apply.
Mark-to-market (§1296) taxes the annual paper gain as ordinary income — and an accumulating fund sends you no cash to pay it with. Worth planning before you elect.
Same fund, other listings: IUIT · ISIN IE00B3WJKG14. They are the same legal instrument; listing venue and currency do not change its entity classification.
IITU gives you concentrated US technology exposure — the US S&P 500 information-technology sector. Concentrated growth exposure and the §1291 default are a bad combination: §1291 allocates your entire gain rateably across the holding period and charges interest on the deemed tax for each earlier year, so the harder the run-up, the more punitive the untaxed years become.
The wrapper is what puts you here, not the index. The same Nasdaq exposure through a US-domiciled ETF carries no PFIC consequence at all. If you are holding IITU inside a European brokerage because a US broker would not open the position, that constraint is real — but it is worth pricing the §1291 cost of the workaround before it compounds further. If you hold the other line instead — IUIT — the entity-classification analysis is unchanged: it is the same legal instrument under another listing.
IITU pays you nothing. The dividends from the underlying shares are reinvested inside the fund instead of hitting your account. Under the default §1291 rules, there may be no cash distribution to test as an excess distribution while you simply hold, while a later disposition can still trigger the allocation and interest-charge regime. Separate annual Form 8621 reporting can also apply during the holding period.
The whole bill then arrives at once. When you sell, the entire gain is allocated rateably across every day you owned IITU; each prior year's slice is taxed at that year's highest ordinary rate, and an interest charge runs from each of those years through to the filing date. An accumulating share class is where §1291 does the most damage, because the longer you held quietly, the longer the interest has been running.
Two knock-ons worth planning around. A mark-to-market election under §1296 taxes the annual paper gain as ordinary income — but IITU distributes no cash, so you have to fund that tax from somewhere else every year. And a QEF election under §1295 requires a PFIC Annual Information Statement from the fund; if iShares does not produce one for this share class, QEF is not actually available to you no matter how much better it looks on paper.
The QEF route for IITU depends on BlackRock/iShares issuing a PFIC Annual Information Statement covering the year — the ordinary-income-and-capital-gain breakdown §1295 requires. Ask for it in writing before you file rather than after: a QEF election made without the statement to support it is not one you want to be defending later.
IITU is the iShares S&P 500 Information Technology Sector UCITS ETF (Accumulating), ISIN IE00B3WJKG14. The registry also records IUIT as another line of the same iShares fund. Match the ticker — and the ISIN, where your statement shows one — to this line before reading the mechanics above as yours.
One other US technology fund in this registry raises the same question as IITU: EQQQ. IITU follows an S&P index; EQQQ follows Nasdaq. The §1297 analysis does not change from one issuer to the next, and each fund is its own PFIC — its own Form 8621, holding period and election history. What does change is the share class, and whether the issuer publishes a PFIC Annual Information Statement for it.
From one fund to the whole case
Four questions — how many funds, for how long, whether Forms 8621 were ever filed, whether the returns are current — and a route into the preparation that fits, with what it costs. Nothing you answer leaves this page.
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A routing read, not a determination. Whether a fund is a PFIC, whether an exception applies and what a prior year needs are established when the holdings are screened; the route above says where that happens and what it costs.
This is a screening assessment based on published vehicle facts and the statutory tests—not a classification based on domicile alone, and not individualized tax, legal, or investment advice — see our methodology (IRC §1297 et seq.). Confirm your specific situation with a licensed professional.
Primary sources (Cornell Legal Information Institute for the US Code and CFR; IRS.gov for forms, procedures, and treaty documents). This page is general information, not individualized tax or legal advice.
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