ISA vs Indian Mutual Funds: Why HMRC Taxes Your SIPs Like Salary

Every UK-based NRI eventually has this conversation with themselves. There's an ISA allowance sitting unused — £20,000 a year, growing tax-free — and there's the mutual fund portfolio in India, built through years of SIPs, that feels like unfinished business. Keep feeding the Indian funds, or start fresh in the ISA? Framed that way it sounds like a preference question. It isn't. UK tax law treats the two so differently that the comparison is closer to a cliff than a trade-off, and the mechanism responsible — HMRC's offshore funds regime — is one most NRIs first hear about when it lands on a tax bill. (Funds are just one front, too: the broader HMRC treatment of Indian income, from NRE interest to rent, is its own guide.)

The ISA side: boring in the best way

The ISA allowance for the 2026-27 tax year is £20,000, spread across the four types — cash, stocks and shares, innovative finance, and lifetime (the last capped at £4,000 a year and age-restricted; the rest split however you like). Inside the wrapper, interest, dividends, and capital gains are simply not taxed. Withdrawals are tax-free too, at any time, for any reason (the lifetime ISA's penalty rules aside). Nothing about an ISA appears on a tax return — no reporting, no computations, no forms. For anyone who has wrestled with a Self Assessment foreign pages section, the administrative silence alone is worth something.

One change is worth planning around. At the Autumn Budget 2025 the government announced that from 6 April 2027 the amount you can put into a cash ISA falls to £12,000 for savers under 65, while the overall £20,000 allowance stays put. The signal is unsubtle: the Treasury wants that allowance invested, not parked. For the comparison in this piece, the stocks and shares ISA is the relevant contender anyway.

The Indian mutual fund side: the trap

To HMRC, an Indian mutual fund is an offshore fund, and offshore funds come in two kinds: reporting and non-reporting. A reporting fund has applied to HMRC and agreed to compute its income under UK tax rules and publish it to investors every year; HMRC maintains the list of approved reporting funds, updated monthly. Search it for Indian fund houses and you come up essentially empty. An AMC running rupee schemes for a domestic Indian investor base has no commercial reason to take on annual UK tax computations for the scattering of UK residents on its register — so Indian mutual funds are, almost without exception, non-reporting funds.

Here is what that costs you. Under HMRC's helpsheet HS265, when you sell units in a non-reporting fund, your profit is not a capital gain at all. It is an offshore income gain, charged to income tax at your marginal rate — 20%, 40%, or 45% — instead of the 18% or 24% capital gains tax rates that apply to shares. And because it's an income charge, the £3,000 CGT annual exempt amount is unavailable.

Put numbers on it. A higher-rate taxpayer redeems Indian equity fund units with a £20,000 gain — roughly ₹23 lakh of profit, which a long-running SIP portfolio reaches without heroics. If those were ordinary shares, CGT would be 24% on £17,000 after the exempt amount: £4,080. As an offshore income gain, the charge is £8,000 at the 40% band — £9,000 if you're an additional-rate payer. Same investment, same profit, roughly double the tax, purely because of what the wrapper is. If you've read about what PFIC rules do to US-based NRIs, this is the UK's version of the same idea — gentler arithmetic, no compounding interest charge, but the identical lesson: a fund that is perfectly ordinary in India turns tax-hostile when you cross a border.

The direct-shares exception, and what "reporting" status actually buys

Two boundary lines around the offshore-funds regime are worth walking, because one of them is a genuine planning lever.

The regime catches funds — collective investment schemes — not securities held directly. Indian shares you own outright in a demat account are ordinary capital assets to HMRC: gains on selling Infosys or HDFC Bank shares are capital gains, taxed at 18% or 24% with the annual exempt amount available, exactly like UK shares. The absurd-sounding consequence is real: a UK NRI holding an Indian index fund pays up to 45% income tax on gains, while a neighbour holding the same fund's top constituents directly pays at most 24% capital gains tax. For a settled-in-the-UK investor determined to keep direct Indian market exposure outside a wrapper, a direct equity portfolio — or simply UK-listed India ETFs — dodges the entire offshore income gain apparatus that a Mumbai-domiciled fund walks straight into.

The other line explains what makes a "reporting fund" acceptable to hold. A reporting fund's investors are taxed each year on their share of the fund's reported income — including income the fund accumulated rather than paid out, so you pay tax on money you haven't received. In exchange, the eventual disposal is a capital gain, with CGT rates and the exempt amount. That trade — a trickle of income tax annually for capital treatment at the end — is why Ireland-domiciled India ETFs with reporting status are fundamentally different assets, for UK tax purposes, from the same exposure via an Indian AMC. Before buying any non-UK fund from a UK sofa, thirty seconds on HMRC's reporting fund list is the highest-value diligence in retail investing.

Moved recently? You have a four-year window

The remittance basis — the old shelter for non-domiciled residents — was abolished on 6 April 2025 and replaced by the 4-year foreign income and gains (FIG) regime. If you're within your first four tax years of UK residence after at least ten consecutive years of non-residence, you can claim, year by year on your Self Assessment return, complete UK tax relief on qualifying foreign income and gains. And HMRC's own manual explicitly lists offshore income gains as qualifying foreign income.

Read that again if you arrived in 2023 or later: for a limited window, you can redeem Indian mutual funds with no UK tax at all on the gains. The window is the cheapest exit ramp UK law will ever offer a legacy portfolio, and it expires on a schedule that doesn't care whether you were paying attention. The claim isn't free — HS266 confirms you forfeit your personal allowance and the CGT annual exempt amount for any year you claim — so it only makes sense when the relieved gains comfortably outweigh a £12,570 allowance at your marginal rate. For a portfolio carrying lakhs of unrealised gains, it usually does, comfortably.

India taxes the redemption too — and the DTAA sorts the overlap

None of this switches off Indian tax. When an NRI redeems, the AMC deducts tax at source on the gain itself: for equity-oriented funds, 12.5% on long-term gains and 20% on short-term gains, plus surcharge and cess, at current rates for post-July-2024 transfers — note the TDS typically runs on the whole long-term gain, with the ₹1.25 lakh exemption recovered by filing an Indian return rather than applied at source. If the UK is also taxing the gain — no FIG claim, or years five onward — the UK-India Double Taxation Convention lets you credit the Indian tax against the UK charge; the mechanics are in our DTAA guide. Mind the direction of that credit, though: 12.5% Indian tax against a 40% UK income charge still leaves a 27.5-point UK top-up. Paying tax in India does not mean you're done. The redemption proceeds, meanwhile, land in your NRO or NRE account depending on how the investment was funded — the repatriation consequences are covered in our NRE vs NRO vs FCNR guide.

Getting out cleanly: sequencing, spouses, and the five-year trap

For the portfolio you already hold, how you exit matters nearly as much as whether you do.

Stagger across tax years. Offshore income gains stack on top of your salary, so a single large redemption can push gains that would have been taxed at 20% into the 40% or 45% bands. Splitting a redemption across two Self Assessment years — some units in March, some in April — keeps each slice lower in the bands, and costs nothing but patience. A sabbatical, parental leave, or any low-income year is the corridor's version of a sale: gains realised then are taxed at the marginal rate of that year, not your usual one.

Use the lower-earning spouse. Transfers between spouses and civil partners are no-gain-no-loss, and that treatment extends to offshore fund units: the receiving spouse takes over the original acquisition cost, and the eventual offshore income gain lands at their marginal rate. Moving units to a basic-rate spouse before redemption turns a 40% charge into a 20% one on the transferred slice — but check three things before celebrating. The UK treatment requires you to be living together in the tax year. Indian mutual fund folios generally can't be gifted in ordinary form — units must be dematerialised and moved by off-market depository transfer, which not every NRI folio can do easily. And India's clubbing rule (Section 64) taxes the redemption gain in the transferor's hands while the UK taxes the transferee — a person-mismatch that can complicate the foreign tax credit. Worth doing, but with a cross-border adviser sequencing it, not as a DIY form-filling exercise.

Mind the five-year rule before you get clever. The obvious wheeze — leave the UK, become non-resident, redeem everything tax-free, come back — has been pre-empted. Under the temporary non-residence rules, if you were UK-resident in at least four of the seven tax years before leaving, gains realised during an absence of five years or less are taxed in the year you return, offshore income gains included. Redeeming from Dubai works only if Dubai (or anywhere non-UK) is a genuine five-plus-year chapter, not a tax-season sabbatical. A permanent return to India, of course, ends UK tax on subsequent redemptions entirely — at which point India's rules take over and the sequencing question becomes an RNOR-window question.

The 2025 inheritance-tax change nobody prices in

One more UK rule reaches this portfolio, and it arrived recently enough that most corridor advice ignores it. Since April 2025, UK inheritance tax runs on residence, not domicile: once you've been UK-resident for ten of the previous twenty tax years, you're a "long-term resident" and your worldwide estate — the Indian mutual funds, the Gurgaon flat, the NRE deposits — sits inside the 40% IHT net above the nil-rate bands, with a tail that keeps you in scope for years after you leave. India abolished estate duty in 1985, so nothing offsets it on the Indian side. An NRI a decade into UK life is typically holding Indian assets inside the UK death-tax net without ever having decided to. The old 1956 India–UK estate duty convention can still shelter non-UK assets on death in specific circumstances — broadly where the deceased was treaty-domiciled in India, and it doesn't help lifetime transfers — genuinely specialist territory, but worth a conversation if the Indian estate is substantial, because the planning that works is done years before it's needed.

The resolution most people miss: India inside the ISA

The framing "ISA or India" is false. UK platforms carry Ireland- and UK-domiciled India equity funds and ETFs — vehicles tracking the Nifty or MSCI India — and inside a stocks and shares ISA the entire offshore-funds analysis becomes irrelevant, because nothing inside an ISA is taxed. Same underlying exposure to Indian markets, zero UK tax, no Indian TDS clipped from your redemptions, no reporting-fund list to check.

What the ISA does not remove is currency risk, and it's worth being honest about what that means. An India ETF priced in pounds is still a basket of rupee assets; the wrapper changes the tax, not the currency. Whether rupee exposure is a risk or a hedge depends on where your future spending lives — if a return to India is on the cards, rupee assets match your future costs; if your life is settling into sterling, they're a bet you should size deliberately, not accumulate by inertia.

	Stocks & shares ISA (incl. India funds)	Indian mutual fund held directly
UK tax on growth and sale	None	Income tax up to 45% on gains (offshore income gain)
CGT annual exempt amount	Not needed	Not available
Indian TDS on redemption	None	12.5% LTCG / 20% STCG (equity)
UK paperwork	None	Self Assessment foreign pages

Which way to cut it

There's no universal answer, only clearer questions. New money, life anchored in the UK: the ISA's arithmetic is very hard to argue with, and India exposure fits inside it. Arrived within the last four years: the FIG window is a genuine, expiring opportunity to restructure a legacy portfolio at zero UK cost — worth modelling this year, not eventually. Settled in the UK with a large Indian portfolio and years of gains: this is where you pay a cross-border professional before acting, because every SIP instalment has its own acquisition date, disposals are income-taxed with no exempt amount, and the Indian TDS and treaty credits need sequencing across tax years that don't even start on the same day. The fee is a rounding error against the gap between 24% and 45% applied to a decade of compounding.

Frequently asked questions

Do my directly held Indian shares count as offshore funds?

No. The offshore-funds regime catches collective investment schemes, not securities. Shares you hold outright in a demat account are ordinary capital assets — 18% or 24% CGT with the annual exempt amount, like any UK share. The 45% problem belongs to funds, which is exactly why the direct-equity route matters as a planning lever.

Can I transfer my Indian mutual funds into an ISA directly?

No. ISAs accept cash subscriptions only — there's no in-specie transfer from an overseas folio. The route is sell, suffer whatever tax the sale triggers on both sides, repatriate, and contribute within the £20,000 annual allowance. Which is why the FIG window matters so much: it's the one period when the "sell" step can be free of UK tax.

Are UK-listed India ETFs caught by the same rules?

Usually not, and that's the point. Ireland- and UK-domiciled India ETFs on the big platforms generally hold reporting-fund status, so disposals are capital gains — and inside an ISA even that disappears. The trap is specifically funds domiciled outside the reporting list, which in practice means funds bought from an Indian AMC. Check the fund's status on HMRC's list before assuming either way.

I'm within my first four years in the UK. Does the FIG relief apply automatically?

No — it's a claim, made year by year on your Self Assessment return, and each claiming year costs you that year's personal allowance and CGT exempt amount. For a small portfolio the price can exceed the relief; for a legacy portfolio with years of gains it's usually the cheapest tax decision available. Model it before the tax year ends, not after.

India already deducted tax on my redemption. Doesn't that settle it?

It settles India's claim, not HMRC's. The Indian TDS becomes a foreign tax credit against your UK charge under the treaty, but crediting 12.5% against a 40% income charge leaves a 27.5-point UK top-up to pay through Self Assessment. Paying tax in one country rarely means paying tax in only one country.

What about my LIC policies and ULIPs?

Different regime again — insurance-wrapped investments fall under the UK's chargeable event rules for foreign policies, not the offshore funds regime, with their own (sometimes harsher, sometimes gentler) arithmetic. Don't map fund logic onto them; they need their own analysis, and for large ULIPs, professional advice.

If I move back to India, does the UK problem just end?

For redemptions made after you're genuinely non-resident, yes — provided the absence lasts more than five years, or the return to India is permanent. Redeem during a short stint abroad and return within five years, and the temporary non-residence rules tax those gains in your year of return. And once you're back for good, the question changes shape: India's tax and the RNOR transition window take over from HMRC's.