The Hidden Costs That Quietly Erode an NRI's Returns on Indian Mutual Funds and Shares

A relative in Bengaluru tells you the fund returned 12% last year, so you assume your money grew 12%. It did not. By the time the annual expense ratio, the stamp duty on every instalment, the GST baked into the fee, the exit load you tripped by redeeming early, and, because you are an NRI, the forex spread on both legs of the journey and the TDS the fund withheld before paying you, have all taken their cut, the number that actually reached your bank account abroad is meaningfully smaller. None of these costs is hidden in the sense of being illegal or undisclosed. They are hidden in the sense that they are deducted before you ever see a figure, so they never appear as a line item you pay, only as a return that was quietly less than the headline.

Most of these charges are small per transaction. A stamp duty of 0.005% on a Rs 25,000 SIP instalment is Rs 1.25. It is laughable in isolation. The reason this guide exists is that the largest of these costs, the expense ratio, is not a one-off; it is an annual percentage that compounds against you for as long as you hold the fund, and over a decade a difference of barely more than one percent a year quietly removes several lakh from your corpus. For an NRI there are two further costs that a resident never pays at all, the forex spread and the TDS cash-flow drag, and they stack on top.

The 30-second answer: The biggest silent cost on an Indian mutual fund is the expense ratio (TER), deducted daily from NAV, roughly 0.5% to 1% on direct plans and 1.5% to 2.25% on regular plans, the gap being the distributor commission. On Rs 10,00,000 at a gross 11% over ten years, a 1.2% TER difference costs about Rs 2,78,457. On top sit stamp duty of 0.005% on every purchase and SIP instalment since July 1, 2020, STT of 0.001% on equity fund redemptions, an exit load near 1% within a year, and 18% GST inside the fee. NRIs also pay a forex spread of 0.5% to 2% each way plus remittance fees, and a TDS drag where the AMC withholds under Section 195 before you reclaim at filing. Small per trade, they compound into lakhs.

This guide walks through each cost in turn, smallest to largest, then puts a single Rs 10 lakh investment through all of them so you can see what the gross return looked like and what actually survived. If you want the broader instrument-level comparison first, read this alongside direct equity versus mutual funds for NRIs, because the route you pick changes which of these costs you pay.

The headline return is gross, and you never receive the headline return

Start with the single most important framing, because every other point follows from it. When a fund reports a return, or a stock index reports its rise, that figure is gross of every cost in this guide. It is the return on the underlying assets before the fund manager's fee, before any transaction tax, before the government's stamp duty, before your bank took a slice converting currency, and before the tax department withheld anything.

The investor return, the number that determines how much money you actually have, is the gross return minus the full stack of frictions. For a resident investor that stack is shorter. For an NRI it is longer by two items, the forex spread and the TDS drag, and those two are precisely the ones that get left out of every fund fact sheet, because the fact sheet is written for a resident.

So the discipline this guide is asking for is simple: whenever you see a return, mentally append "before costs", and whenever you compare two options, compare them after costs. The rest of this guide is just an itemised list of what sits in that gap.

Securities Transaction Tax: real, but genuinely small

Securities Transaction Tax (STT) is a levy the government charges on transactions in listed securities and equity-oriented funds. It is collected automatically by the exchange or the AMC, so you never write a cheque for it; it is netted out of your trade.

The rates are deliberately low and they differ by transaction type. On a delivery-based equity purchase and sale you pay 0.1% on each side, buy and sell, on the transaction value. On an intraday equity sale you pay 0.025% on the sell side. On an equity-oriented mutual fund redemption you pay 0.001% on the redemption value. There is no STT on the purchase of mutual fund units; it bites only on the way out, and even then at a thousandth of a percent.

Put a number on it so the scale is honest. Redeem an equity fund position worth Rs 26,85,000 and the STT is Rs 27. Buy and sell Rs 5,00,000 of a listed share and the STT is Rs 500 on the buy and Rs 500 on the sell, Rs 1,000 in total. STT is real and you should know it exists, but it is not where your returns go to die. It matters most for active traders churning delivery equity, where 0.1% per side repeated dozens of times a year adds up; for a buy-and-hold fund investor it is a rounding error. I am covering it first precisely so you can stop worrying about it and focus on the costs that actually move the needle.

Stamp duty: 0.005% on the way in, every single time

Since July 1, 2020, a uniform stamp duty applies to the purchase of mutual fund units across the country. The rate is 0.005% on the purchase value, and crucially it is charged on the buy side: every lump-sum investment, every SIP instalment, every switch into a scheme, and every dividend reinvestment that creates new units attracts it. Redemptions do not, because no new units are issued when you sell. A separate 0.015% rate applies to transfers of units between demat accounts, which most ordinary investors never trigger.

The mechanics are that the stamp duty is deducted from your investment amount before units are allotted, so you receive very slightly fewer units than your money would otherwise have bought. On a Rs 25,000 SIP instalment the duty is Rs 1.25. On a Rs 10,00,000 lump sum it is Rs 50. Over a long SIP it is a trickle rather than a flood, but it is a trickle on the way in, on top of everything else.

The honest read on stamp duty is that, like STT, it is a genuine cost but a tiny one for a long-term investor. It hurts proportionally more on very short holding periods, because you paid the entry duty and then redeemed before the investment had time to earn anything, which is one more small reason not to treat an equity fund as a parking spot for money you will need in months.

Exit load: the penalty for leaving early

An exit load is a charge the fund levies if you redeem within a defined holding period, designed to discourage short-term churn that disrupts the manager's positioning. The amount stays in the scheme for the benefit of remaining investors; it is not a government tax.

The typical structure on an equity fund is around 1% if you redeem within 12 months, falling to nil after that, though the exact figure and window vary by scheme and you should read the specific scheme information document rather than assume. Some funds use a tiered load, for example 1% within a year and 0.5% in the second year; liquid and overnight funds use much shorter graded loads measured in days.

The number is meaningful because it applies to your redemption value, including the gains. Redeem Rs 5,00,000 from an equity fund four months after buying it and a 1% exit load is Rs 5,000, deducted before you even reach the tax question. Then the STT and the TDS apply to what is left. The practical rule is the same one a resident follows but it matters more for an NRI whose money may be needed across borders on short notice: do not put money you might need within a year into an instrument that charges you 1% to leave. Match the holding period to the instrument, and the exit load never touches you.

Expense ratio (TER): the silent giant

This is the cost that matters most, by a wide margin, and it is the one investors notice least, because it never appears as a deduction on any statement. The Total Expense Ratio (TER) is the annual fee the fund charges for managing your money. It covers the fund manager's salary, the AMC's costs, marketing and, on a regular plan, the distributor's commission. It is expressed as a percentage of assets and it is deducted daily from the Net Asset Value (NAV), so the NAV you see is already net of it. You never pay it; you simply earn a little less every single day.

Two numbers define the landscape. Direct plans carry a TER of broadly 0.5% to 1% on actively managed equity funds, and far less on index funds. Regular plans of the same scheme carry 1.5% to 2.25%. The entire difference between the two is the distributor or agent commission that the regular plan pays and the direct plan does not. A direct plan and a regular plan can hold the exact same portfolio, managed by the exact same person, and differ only in that one pays a middleman. The gap between direct and regular is typically 0.5% to 1% a year, and on some actively managed funds wider.

18% GST sits inside this fee. The Goods and Services Tax on the AMC's management and advisory service is charged at 18% and is accounted for within the TER, so when you see a 1.8% expense ratio, the manager's underlying fee plus the GST on it together make up that figure. You are not billed GST separately; it is one more component already netted out of your NAV.

There is a 2026 disclosure change worth knowing. From April 1, 2026, SEBI requires the TER to be presented in separated components: a Base Expense Ratio (BER), which is the AMC's own management fee, with brokerage and transaction costs shown separately, and statutory levies (GST, STT, stamp duty, exchange fees) charged on actuals rather than bundled inside a single cap. The practical effect for you is transparency, not a lower bill: you can now see the manager's true fee ring-fenced from the taxes, and compare two funds' management costs cleanly without a change in STT or GST rates muddying the number. It does not change the core lesson, which is that the management fee, however it is now displayed, compounds against you.

Why the TER dwarfs everything else is arithmetic. STT, stamp duty and exit load are one-off charges on a single transaction. The TER is an annual charge, levied every year you hold the fund, and because it is taken out of the base on which your money compounds, its effect grows with time. A 1.2% higher fee is not a 1.2% smaller outcome; over a decade it is far worse than that, because each year's fee also costs you the compounding on every prior year's fee. The worked example below shows exactly how much.

The forex spread: the cost a resident never pays

Here is the first of the two costs that exist only because you are an NRI. To invest in an Indian fund or share you must hold rupees, and to hold rupees you converted foreign currency, your pounds, dollars, dirhams or Canadian dollars, into INR. That conversion is never done at the clean mid-market rate you see on a currency app. Your bank or remittance provider applies a spread, a margin between the rate they give you and the true interbank rate, and that spread is commonly 0.5% to 2% depending on the bank, the corridor and the amount, sometimes wider for small retail transfers. On top of the spread sits a flat remittance or SWIFT fee per transaction.

Then it happens again in reverse. When you repatriate the proceeds, converting rupees back into your home currency to take the money out of India, you pay the spread a second time. So a round trip into and out of Indian investments can cost you the forex spread twice, plus two sets of fees, none of which a resident investor in the same fund ever incurs.

This is why the way you remit matters as much as what you invest in. A 1.5% spread on Rs 10,00,000 brought in is Rs 15,000 gone before a single unit is bought, and another spread on the larger sum repatriated years later. Choosing a provider with a tight spread, batching transfers rather than dribbling money across in small amounts, and timing conversions sensibly are all genuine return levers for an NRI. The detail on minimising this is in forex rates and charges on remittances and sending money to India. For a recurring SIP the spread is paid on every instalment, which is one argument for funding SIPs from an Indian rupee account you have already topped up in larger, cheaper conversions rather than converting fresh currency monthly; the mechanics are in setting up an NRI SIP from abroad.

The TDS drag: your money, locked up until you reclaim it

The second NRI-only cost is not strictly a fee at all, because in principle you get it back. But "in principle" is doing a lot of work, and the cash-flow cost in the meantime is real.

When a resident redeems most equity mutual funds, no tax is withheld at the point of sale; they compute and pay their capital gains tax when they file. When an NRI redeems, the AMC withholds TDS at source under Section 195 before the proceeds are paid, and on a PIS share sale the designated bank withholds under Section 115AD. The rates track the capital gains rates, 20% on short-term equity gains and 12.5% on long-term equity gains above Rs 1.25 lakh for transfers on or after July 23, 2024, but the withholding routinely overshoots, because the deducting party often ignores your Rs 1.25 lakh annual long-term shield, does not net off your capital losses, and disregards any treaty relief you are entitled to.

The result is that a chunk of your money is withheld and sent to the tax department, and you recover the excess only by filing ITR-2 and waiting for the refund. The tax may be fully recoverable, but until the refund lands, that cash is not working for you and not available to you. That is the drag: a timing and liquidity cost that a resident does not bear, even where the eventual tax bill is identical. The full mechanics, including how to reduce the over-withholding with a lower-deduction certificate, are in NRI mutual fund TDS on redemption and the broader tax treatment in capital gains tax for NRIs on shares and mutual funds.

The worked example: one Rs 10 lakh investment, all the costs

Abstractions do not persuade. Numbers do. So take a single, clean case and run it through the full stack. Priya is an NRI in London. She invests Rs 10,00,000 in an Indian equity fund and holds it for ten years. Assume the fund's underlying portfolio delivers a gross 11% a year before any cost, and she is below the surcharge thresholds. We will compare the same investment in two plans, direct and regular, then add the one-off and NRI-specific costs.

The gross, cost-free fantasy. At a flat 11% for ten years, Rs 10,00,000 would grow to about Rs 28,39,421. This is the number nobody actually receives. It is the headline. Hold onto it as the benchmark everything else is measured against.

The direct plan (TER 0.6%). The expense ratio drags the net return to about 10.4% a year. Rs 10,00,000 compounding at 10.4% for ten years reaches about Rs 26,89,619. The TER alone, just 0.6% a year, has cost her about Rs 1,49,802 against the cost-free fantasy, purely as the management fee compounding away.

The regular plan (TER 1.8%). Same fund, same manager, same portfolio, but now paying a distributor commission inside the fee. The net return falls to about 9.2% a year. Rs 10,00,000 at 9.2% for ten years reaches only about Rs 24,11,162.

The difference that should stop you. The regular plan leaves Priya with Rs 24,11,162; the direct plan leaves her with Rs 26,89,619. The gap is about Rs 2,78,457 on a single Rs 10 lakh investment over a decade, and the only thing she did differently was buy the version that pays a middleman. That is more than a quarter of her original capital, lost to a fee difference of 1.2% a year that looked like nothing on the fact sheet. This is the compounding of fees made concrete, and it is the single most important number in this guide.

Now layer the one-off and NRI costs on top. These are small beside the TER gap, but they are real and they all land on the same investment.

• Stamp duty on the way in: 0.005% on the Rs 10,00,000 purchase is Rs 50.
• Forex spread bringing the money in: at a 1% spread on Rs 10,00,000, about Rs 10,000, plus a flat remittance fee, before any units are bought.
• STT on redemption: 0.001% on the roughly Rs 26,89,619 redemption value is about Rs 27.
• Forex spread on repatriation: at a 1% spread on the roughly Rs 26,89,619 repatriated, about Rs 26,896, plus another remittance fee.
• TDS drag at redemption: the long-term gain on the direct plan is about Rs 16,89,619, less the Rs 1.25 lakh shield leaves about Rs 15,64,619 taxable, taxed at 12.5% plus 4% cess, roughly Rs 2,03,400 withheld by the AMC and reconciled at filing. Recoverable in part, but locked up until the refund.

Pull it together. The two forex legs alone cost Priya roughly Rs 36,896, more than ten times the STT and stamp duty combined, which underlines where an NRI's friction actually concentrates: not in the exchange taxes everyone obsesses over, but in the currency conversion and the management fee. The STT and stamp duty together are under Rs 80 on the whole ten-year journey. The exit load is zero, because she held past the one-year window, which is exactly the point of holding past it.

So the ranking of what mattered, for Priya, from largest to smallest: the expense-ratio gap (about Rs 2,78,457 if she chose wrong), then the forex spreads (about Rs 36,896 across both legs), then the TDS timing drag on about Rs 2,03,400, then the trivial STT and stamp duty. The lesson writes itself. Choose the direct plan, mind the forex spread, plan the TDS, and stop losing sleep over the exchange taxes.

Edge cases worth pricing in

Direct versus regular is the one free lunch. Almost nothing in investing offers a higher, more certain return for zero added risk than switching from a regular plan to the direct plan of the same scheme. You give up the distributor's hand-holding, which for a confident NRI investor is often worth little, and you keep the 0.5% to 1% a year that the commission was costing you. If you already hold regular plans, switching to direct is a redemption and repurchase, so it can trigger a capital gains event and possibly an exit load, which must be weighed; but for new money, there is rarely a reason to buy regular. The instrument-level comparison is in tax-efficient investing for NRIs.

Index funds and ETFs sit at the bottom of the fee band. A passive index fund tracking the Nifty 50 carries a TER often well under 0.2% on the direct plan, a fraction of an actively managed fund's 1% to 2%. Over the kind of decade in Priya's example, that fee difference compounds in your favour just as the regular-plan gap compounded against her. For a cost-conscious NRI, low-cost index funds and ETFs are the structural answer to the expense-ratio problem, with the caveat that US and Canada persons must check the PFIC and OIFP treatment first. The full case is in NRI investing in index funds and ETFs.

The forex spread can dwarf the fee on short holds. Everything in the worked example assumed a ten-year hold, which spreads the one-off forex cost thinly. On a short hold the maths inverts: a 1.5% spread in and another out, paid on money held only a year or two, can cost more than the expense ratio ever did. The shorter your horizon, the more the entry and exit frictions, forex and exit load, dominate, and the less sense an equity fund makes at all.

TDS is reclaimable, but only if you file. The TDS drag is a timing cost rather than a permanent loss, but the recovery is not automatic. You must file ITR-2 and claim the refund, and if your withholding chronically overshoots you can apply for a lower-deduction certificate to reduce it at source. An NRI who never files simply forfeits the over-withheld amount, turning a timing cost into a real one. Do not leave it on the table.

Regular plans are not always wrong. For an NRI genuinely uncertain about fund selection, with no time to research and no adviser otherwise, a good distributor's guidance can be worth the commission if it stops you from making a far more expensive mistake, like buying six concentrated funds or churning in and out. The honest read is that the commission is worth paying only when the advice it buys is genuinely changing your behaviour for the better; for a confident buy-and-hold investor, it almost never is. Common errors are catalogued in NRI investing mistakes to avoid.

The closing read

The headline return is a fiction you never receive, and the gap between it and the money that actually reaches your account abroad is the subject of this entire guide. Most of that gap is not the exchange taxes that investors fret about. STT and stamp duty, on a long-term holding, together cost Priya under Rs 80 on a Rs 10 lakh, ten-year journey. They are real, they are worth understanding, and they are almost never worth worrying about.

The costs that actually matter, in order, are these. First and largest, the expense ratio, because it is annual and it compounds: a 1.2% difference between a regular and a direct plan cost about Rs 2,78,457 on a single Rs 10 lakh investment over a decade, which is the most expensive avoidable mistake on this page. The fix is free: buy the direct plan, and where it fits your tax position, buy low-cost index funds. Second, the forex spread, the cost that exists only because you are an NRI, paid on both legs and easily Rs 35,000-plus across a round trip, minimised by choosing a tight-spread provider and batching conversions rather than dribbling money across monthly. Third, the TDS drag, recoverable but only if you file, and a genuine cash-flow cost in the meantime.

My honest framing for an NRI investor is simple. You cannot avoid every cost; STT, stamp duty and the TDS withholding are structural. But the two largest levers, the choice of plan and the management of forex, are entirely in your hands, and getting both right is worth several lakh over a decade on even a modest corpus. Treat the expense ratio as the silent tax it is, treat the forex spread as a cost to be shopped for rather than accepted, and hold long enough that the one-off frictions stop mattering. Do that, and the gap between the headline and what you keep shrinks to the part that genuinely could not be helped.

Related guides

• Direct equity versus mutual funds for NRIs
• NRI investing in index funds and ETFs
• NRI mutual funds eligibility
• Setting up an NRI SIP from abroad
• Tax-efficient investing for NRIs
• NRI portfolio asset allocation
• NRI mutual fund TDS on redemption
• Forex rates and charges on remittances
• Sending money to India
• NRI investing mistakes to avoid
• Capital gains tax for NRIs on shares and mutual funds

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This guide is general information for NRIs, not investment, tax, or legal advice. Expense ratios, stamp duty (0.005%), STT rates, exit loads, GST (18%), the April 1, 2026 SEBI TER disclosure changes, capital gains rates, the Rs 1.25 lakh threshold and TDS rates are set by SEBI, the RBI and the Income Tax Department and change. Forex spreads and remittance fees vary by bank and corridor. The PFIC and OIFP treatment of Indian funds for US and Canada persons depends on your personal facts. Confirm the current charges and your tax position with your fund house, bank, broker and a qualified chartered accountant or cross-border tax adviser before investing or redeeming.