Private Credit Funds and the American Investor in Britain
Private credit funds have become the default allocation for wealthy investors who want a high, floating-rate yield without the volatility of equities, and London sits at the centre of the European market. Private banks now offer direct lending, senior secured and special situations strategies to clients who would never have seen them a decade ago. For a US citizen living in Britain, however, the same subscription document that looks like a bond with a better coupon can produce one of the least efficient tax results available to an American abroad.
The reason is simple to state and hard to see in the offering memorandum. Private credit funds earn interest, and interest is the income both countries tax most heavily. Britain charges it at up to 45 per cent now and 47 per cent from April 2027. America charges it as ordinary income, adds a 3.8 per cent surcharge, and then, depending on how the fund is built, may treat your holding as a passive foreign investment company with an interest charge on top. Consequently, the legal wrapper matters more than the strategy.
At TaxYork we prepare the returns of investment bankers, fund professionals and business owners in London who hold these funds alongside their British Self Assessment. In our experience, the damage rarely comes from the headline rate. Instead, it comes from three structural mismatches that nobody explains at subscription: the fund's entity classification, the timing of payment-in-kind interest, and the British offshore fund rules.
Why Private Credit Funds Are Taxed Differently for a US Citizen
A British investor in private credit funds faces one tax system. You face two, and they disagree about what you own. Britain looks at whether the fund is transparent or opaque and whether it holds reporting fund status. America looks at whether the fund is a partnership or a corporation under its own entity classification rules. Therefore, the same subscription can be a simple share of loan interest in one country and a punitive foreign corporation in the other.
Furthermore, the saving clause in the US-UK treaty allows America to tax its citizens as though the treaty did not exist. Accordingly, the relief you rely on is the foreign tax credit, and that credit only works when both countries tax the same income in the same year and in compatible categories. Every structural choice in this article is ultimately about keeping those three things aligned.
What the Generic Guidance Misses
Search for guidance and you will find two separate literatures that never meet. American pages warn that every non-US fund is a PFIC. British pages explain reporting fund status for UK residents. Neither addresses private credit funds held by a US person in Britain, and the American warning is simply wrong for the most common credit fund structure. Additionally, neither covers payment-in-kind interest, which is where direct lending most often breaks the credit.
How the Fund's Legal Form Decides Your US Tax
The single most important question to ask before subscribing to private credit funds is what the fund is, legally. The answer determines whether you report interest on a Schedule K-1 or file an annual Form 8621 under the PFIC regime.
Partnership Funds and the Check-the-Box Default
Most European private credit funds are organised as limited partnerships: the Luxembourg special limited partnership, the English limited partnership or the Cayman exempted limited partnership. Under the entity classification regulations at section 301.7701-3, a foreign eligible entity defaults to partnership status where at least one member has unlimited liability. A limited partnership always has a general partner with unlimited liability. Consequently, the default classification is partnership, and many managers also file a protective election to confirm it.
That classification is good news. A partnership is not a corporation, so it cannot be a PFIC. Instead, you are taxed directly on your share of the fund's interest, fees and gains as they arise, reported on a Schedule K-1 or an equivalent statement. Moreover, the interest keeps its character, so it sits in the foreign tax credit calculation exactly as a directly held loan would.
Corporate Feeders and the PFIC Regime
The problem with private credit funds arises with the wrappers that private banks prefer for smaller tickets. A Luxembourg SICAV, an Irish ICAV or a Cayman corporate feeder is a corporation for American purposes. Because a credit fund's income is almost entirely interest, it fails the passive income test in section 1297 immediately, and you hold a PFIC.
Under the default rules, distributions above a threshold and every gain on disposal are spread across your holding period, taxed at the top ordinary rate for each year, and charged interest as though the tax had been paid late. Therefore, a senior loan fund yielding seven per cent can deliver an effective American rate above 40 per cent before any British tax is counted. Additionally, you must file Form 8621 for each PFIC every year.
The US Feeder Most Managers Already Offer
Many institutional managers of private credit funds run a parallel Delaware feeder precisely because American investors cannot tolerate PFIC treatment. If you tell the manager you are a US person, you will usually be offered that vehicle rather than the offshore corporate feeder. Crucially, HMRC generally treats a Delaware limited partnership as transparent, so the feeder works on both sides of the Atlantic. The private bank's own feeder, by contrast, is typically built for non-US clients, and a relationship manager rarely asks about citizenship before recommending it.
How Britain Taxes Private Credit Funds
The British rules for private credit funds turn on the same distinction between transparent and opaque vehicles, although the consequences differ.
Transparent Partnerships and Savings Income
Where the fund is a transparent partnership, HMRC treats you as receiving your share of the underlying interest directly. It is savings income, taxed at 45 per cent for an additional rate taxpayer under the current income tax rates. From 6 April 2027 the savings rates rise to 22, 42 and 47 per cent, while employment and trading income stay at 45 per cent. Consequently, interest from private credit funds is about to become the most heavily taxed income a London resident can receive.
The rate rise has a subtle American consequence. Passive income bearing foreign tax above the top US rate of 37 per cent is automatically moved into the general basket under the high-tax kickout in section 904. British interest at 45 or 47 per cent always clears that threshold. Therefore, your fund interest joins your salary in the general basket, where excess British tax simply accumulates.
Offshore Funds, Reporting Status and the Bond Fund Rule
Where one of your private credit funds is opaque, Britain applies the offshore funds regime. If the fund lacks reporting fund status, every gain on disposal becomes an offshore income gain taxed at up to 45 per cent rather than capital gains tax at 24 per cent. You can check any share class against HMRC's list of approved offshore reporting funds, which is updated monthly.
With reporting status, you pay income tax each year on your share of the fund's reportable income, whether or not it is distributed. Furthermore, section 378A of ITTOIA 2005 treats distributions from an offshore fund as interest rather than dividends where more than 60 per cent of its assets are interest-bearing. Almost all private credit funds exceed that threshold, so the lower dividend rates never apply.
Why Reporting Status Can Align With a US Election
Here the two systems can be made to cooperate for private credit funds held through a corporate wrapper. A reporting fund taxes you annually on reportable income. A PFIC for which you make a qualified electing fund election under section 1295 taxes you annually on your share of ordinary earnings. Consequently, pairing the two puts the same income into the same year in both countries, and the British tax at 45 per cent fully covers the American charge. That pairing is the single most valuable fix for a corporate feeder you cannot exit.
Payment-in-Kind Interest: The Timing Trap in Direct Lending
Borrowers in direct lending private credit funds often pay part of their interest in kind, adding it to the loan principal rather than paying cash. For private credit funds with a meaningful payment-in-kind component, this is where the foreign tax credit breaks most visibly.
America Taxes the Accrual Every Year
American law treats payment-in-kind interest as original issue discount. Under section 1272, the holder includes the discount in income as it accrues, whether or not any cash arrives. Therefore, your K-1 from private credit funds will show interest you never received, and the American tax on it is due in the current year.
Britain May Wait Until Redemption
Britain can take a very different view. Where a debt falls within the deeply discounted securities rules, explained in HMRC's guidance on the meaning of a deeply discounted security, an individual is taxed on the profit only on disposal or redemption. Accordingly, the British tax on the capitalised interest can arrive several years after America taxed the same money.
Why the Mismatch Strands Your Credit
The consequence is double taxation by timing. In the accrual year, America taxes the payment-in-kind interest and no British tax exists to credit. In the redemption year, Britain taxes it and no American income exists to credit it against. Under the foreign tax credit rules, excess credits carry back only one year and forward ten, and at British rates of 45 per cent your general basket rarely has headroom to absorb them. Consequently, where a fund offers a cash-pay share class, it is almost always the better choice for an American investor.
Reporting Private Credit Funds to the IRS and FinCEN
Compliance on private credit funds extends well beyond the income pages, and the forms depend on the fund's classification.
Form 8938, Form 8621 and the K-1
Your interest in foreign private credit funds is a specified foreign financial asset. An American living abroad files Form 8938 once such assets exceed $200,000 at year end or $300,000 at any time, doubled for joint filers, as the IRS sets out in its comparison of Form 8938 and FBAR requirements. Additionally, a PFIC holding needs its own Form 8621 every year, and a partnership fund issues a K-1 whose figures flow into your return. Our FBAR and FATCA reporting service handles the full set.
The FBAR Position on Private Fund Interests
The FBAR treats interests in private credit funds in an unexpected way. The regulation at 31 CFR 1010.350 makes a foreign mutual fund reportable only where its shares are available to the general public with a regular net asset value and regular redemptions. The paragraph covering other investment funds remains reserved. Consequently, a closed-ended private credit fund interest is generally outside the FinCEN Form 114, although the private bank account that funds your capital calls is certainly within it.
If the Filings Were Missed
Many clients discover the PFIC and Form 8938 obligations only when a new adviser asks for the fund statements. Where the failure was not wilful, the IRS Streamlined Filing Compliance Procedures allow three years of amended or delinquent returns and six years of FBARs with penalties waived for qualifying non-residents. Our Streamlined filing service prepares the missing Forms 8621 and 8938 within that submission. Importantly, a qualified electing fund election generally has to be made on the first return for the year of acquisition, and a retroactive election is available only in narrow circumstances, so a late discovery narrows your options considerably.
Questions to Ask Before You Subscribe to Private Credit Funds
Most of the damage described above is avoidable at the subscription stage and expensive afterwards. Therefore, a short list of questions to the manager or private bank is worth more than any later repair.
Classification, Feeders and Share Classes
Ask first how the vehicle is classified for American purposes, and whether the manager has filed an entity classification election. Next, ask whether a US feeder exists for American investors. If you must use an offshore vehicle, ask which share classes hold British reporting fund status and for which periods, because status attaches to the share class rather than the fund. Additionally, ask whether the manager provides a PFIC annual information statement each year, since the qualified electing fund election is impossible without it.
Loan Terms, Withholding and Statements
Then turn to the loans. Ask what proportion of portfolio interest is payable in kind, and whether a cash-pay class is available. Furthermore, ask how the fund handles British withholding on interest from UK borrowers; most funds rely on the qualifying private placement or quoted Eurobond exemptions, and a fund that does not may suffer tax you cannot recover. Finally, ask when K-1s or investor statements are issued. Private credit funds that deliver statements late in the year can force an extension of your American return, so plan for it.
Why Advice From the Fund Side Is Not Enough
A manager's tax team works for the fund, not for you, and its disclosures are written for the typical investor, who is not an American living in London. Consequently, the offering memorandum will describe the British treatment for UK residents and the American treatment for US residents, but rarely the combination. Professional bodies such as the Chartered Institute of Taxation, the ICAEW and the AICPA all stress that cross-border investors need advice on their own position rather than the fund's. In our experience, a one-hour review of the documents before subscription routinely saves five figures over the life of the investment.
A Worked Private Credit Funds Case Study
Consider Daniel, an American managing director at an investment bank in London. He earns £600,000 in salary and invested $1.5 million across two private credit funds in 2026: $1 million in a Luxembourg special limited partnership running a direct lending strategy, and $500,000 in a Luxembourg SICAV senior loan fund recommended by his private bank.
The Position Before We Reviewed It
The partnership yields nine per cent, or $90,000 a year, of which $20,000 is payment-in-kind. America taxes all $90,000 at 37 per cent. Britain taxes the $70,000 of cash interest at 45 per cent now and, on our reading of the loan terms, the $20,000 only on redemption. The cash interest is kicked into the general basket with excess credit. However, the $20,000 bears no British tax in the year of accrual, so $7,400 of American tax is due on it in full. Over four years, that is $29,600 of uncredited American tax, followed by roughly $36,000 of British tax at redemption with nothing to credit it against.
The SICAV is a PFIC and a UK reporting fund. It accumulates $35,000 of reportable income a year, taxed in Britain at 45 per cent, or $15,750 annually. Daniel made no qualified electing fund election. Therefore, America would tax nothing until sale and then apply the default PFIC rules, while the British tax already paid in earlier years has no American income to offset. On a four-year hold, we estimated roughly $57,800 of American tax and interest charge against $63,000 of stranded British tax, a combined rate above 80 per cent on $140,000 of income.
What the Repairs Produced
Three changes to how Daniel held his private credit funds transformed the position. Firstly, the manager offered a cash-pay share class of the partnership, and switching removed the payment-in-kind timing mismatch entirely, saving the $29,600. Secondly, because the SICAV issues a PFIC annual information statement, we made a qualified electing fund election on the first-year return, aligning the American inclusion with the British reportable income and saving about $52,000 over four years. Thirdly, we filed Form 8621 and Form 8938 and confirmed that neither fund interest belonged on his FBAR.
What remains is the 3.8 per cent net investment income tax, roughly $4,750 a year across both funds, which is not creditable against British tax. That residue is real. Nevertheless, Daniel's overall saving exceeded $80,000 over four years, from nothing more than choosing the right share class and filing the right election in the right year.
How TaxYork Can Help
For clients holding private credit funds, we prepare the American and British returns together, which is the only way these mismatches become visible. Preparing either return in isolation hides the timing and basket problems until the credits have already expired.
Our work on private credit funds starts before subscription where possible. We review the offering documents, confirm the entity classification, identify whether a US feeder exists, and check reporting fund status by share class. Furthermore, we read the loan terms for payment-in-kind features and model both returns before you commit capital.
For existing holdings, we make the elections that remain available, prepare every Form 8621, Form 8938 and K-1 schedule, and coordinate the foreign tax credit and treaty position across both baskets. Above all, we quantify the cost of each structure so that the decision rests on numbers rather than on a relationship manager's recommendation. Our US tax return preparation for expats brings all of it into one filing.
Conclusion
Private credit funds can be excellent investments for an American in Britain, but only in the right wrapper. A limited partnership is transparent in America and Britain alike, taxed as interest in both, and credited without friction, save for the 3.8 per cent surcharge. A corporate feeder, by contrast, is a PFIC, and without a qualified electing fund election made in the first year it can push the combined rate above 80 per cent.
Two further mismatches in private credit funds deserve attention before you subscribe. Payment-in-kind interest is taxed by America as it accrues and potentially by Britain only on redemption, stranding credits at both ends. Meanwhile, the British savings rate rises to 47 per cent from April 2027, which pushes every pound of fund interest into the general basket alongside your salary. Ultimately, the investment decision and the tax decision are the same decision, and they belong together from the first subscription document.
Contact Us
If you hold, or are considering, private credit or direct lending funds while living in Britain, we should review the structure before your next capital call. Please contact us to discuss your fund documents, your elections and any filings that were missed.
Email hello@taxyork.com or telephone 020 3488 8606. Alternatively, book a consultation and we will review your fund statements alongside your UK Self Assessment before recommending anything.
Disclaimer
This article provides general information on private credit funds and does not constitute tax or investment advice. Tax treatment depends on individual circumstances, fund documentation and legislation in force at the time. You should obtain professional advice before acting on anything set out above. TaxYork accepts no liability for action taken in reliance on this article.