Thinking of Investing in FCNR(B) FD before Sept 30? Read This

Banks have been advertising FCNR(B) rates of 6% to 7.5% since RBI's June 2026 swap window opened, and the pitch sounds simple: dollar deposits, no currency risk, tax free interest. That last part is true in India. It is not true once you file a US return, and the gap between the two can be a lot bigger than the headline rate suggests.

Is FCNR interest taxable in the US? Yes, in full, as ordinary income, every year the interest is credited. India's exemption under Section 10(15) has no effect on your US tax bill.

I will walk you through what actually determines your real return: your marginal federal bracket, whether you cross into Net Investment Income Tax territory, what your state does, and what happens to the rate once currency and tax both take a turn at it. By the end you will know what you are actually earning, not just the rate on the ad.

Why India's tax break doesn't travel with you

Section 10(15) of India's Income Tax Act exempts interest on an FCNR(B) deposit from Indian tax, and banks do not deduct TDS on it. That is a real benefit if you are only thinking about your India side. Compare it to an NRO fixed deposit, where the bank withholds 30% TDS before you see a rupee.

The US does not care what India exempts. If you are a US person, meaning a citizen, a green card holder, or a resident alien who meets the Substantial Presence Test, the IRS taxes your worldwide income. Your FCNR(B) interest counts, in full, the same year it is credited to your account, regardless of whether India ever touched it.

This is where a lot of the confusion starts. The marketing around FCNR(B) is written for an Indian audience, where tax free really does mean tax free. Nobody adjusts that pitch for a reader who also files a 1040.

If you are still getting familiar with how an FCNR(B) account works day to day, InvestMates has a separate guide covering FCNR account eligibility and documents that I will not repeat here.

Why the interest costs more than it looks

Most other investments give you a shot at a lower tax rate if you hold them long enough. Sell a stock or a fund after more than a year and the gain typically qualifies for the long-term capital gains rate, 0%, 15%, or 20% depending on your income, well below what you pay on your paycheck.

FCNR(B) interest never gets that treatment, no matter how long you hold the deposit. It is interest, not a capital gain, so it is taxed at your full ordinary income rate every single year.

Neha is in the 24% federal bracket. If she had put the same money into a taxable brokerage account and held it more than a year, a gain would likely land in the 15% long-term capital gains bracket that covers most middle and upper income earners.

On FCNR(B) interest, she pays 24%, not 15%, purely because of how the income is classified. That is a 9 percentage point gap before NIIT, state tax, or the missing foreign tax credit even enter the picture.

The 9% and 25% headlines are a different product

You may have also seen numbers like 9x leverage or after-tax returns of 14% to 27% attached to FCNR(B) coverage this year. Those figures come from a separate leverage product some banks are offering alongside the deposit, where the bank lends against your FCNR(B) balance at a $1,000,000 minimum, not from the deposit's own interest rate.

That leverage product carries its own borrowing cost and repayment risk. It is a completely different decision from simply holding an FCNR(B) deposit at 6% to 7.5%, and nothing here applies to that leveraged structure.

Keep the two separate when you compare what you read online. Conflating them is an easy way to think your plain deposit is earning far more than it actually is.

How and when the IRS taxes FCNR(B) interest

Most FCNR(B) deposits are cumulative, meaning the interest compounds and gets credited to your balance once a year rather than paid out monthly. For US tax purposes, that credited amount counts as income the year it is credited, not the year you eventually withdraw it or the year the deposit matures.

You report it on Schedule B of Form 1040, converted to dollars using the IRS yearly average exchange rate or the rate on the date it was credited. Arjun, a software engineer in Texas, opens a five year FCNR(B) deposit.

Even though he will not touch a rupee, or a dollar, of that money until year five, he has to report a slice of interest income on his US return every single year of the term, based on what the bank credits to his balance each year.

That timing detail catches people off guard more than the tax rate itself does. You cannot defer the US tax bill just because you chose a longer term deposit.

The full mechanics of converting the interest, plus your FBAR and Form 8938 obligations on the underlying account, are covered in InvestMates' guide on FD taxation in the US. I am focusing here on what that interest actually costs you after tax, not the reporting paperwork.

The real problem, there's no foreign tax credit to lean on

When India taxes your income and the US also taxes it, Form 1116 usually lets you claim a foreign tax credit for what you already paid India, dollar for dollar, up to a limit. That is how double taxation gets avoided on most cross border income, and it is the mechanism most NRIs assume protects them here too.

FCNR(B) breaks that pattern. Because India charges zero tax and zero TDS on the interest, there is nothing to credit.

Meera holds an NRO fixed deposit earning $7,000 in interest, and India withholds 30% TDS, about $2,100, before she receives anything. She can claim most of that $2,100 as a foreign tax credit against her US tax on the same income.

Priya holds an FCNR(B) deposit instead, earning the same $7,000. India took nothing from her, so she has nothing to credit, and the full US tax bill lands on her with no offset at all. The account that looks tax free is, for a US filer, the one with no cushion whatsoever.

What your bracket actually costs you

The 2026 federal brackets run from 10% up to 37%, with the top rate starting at $640,600 of taxable income for single filers and $768,700 for married filing jointly.

Your marginal bracket is the rate on your last dollar earned, not an average across all your income. Since FCNR(B) interest stacks on top of whatever else you earn, it typically gets taxed at that marginal rate rather than some blended figure.

Here is what a $100,000 FCNR(B) deposit at a 7% headline rate actually nets after one year, assuming the $7,000 in interest lands entirely inside a single bracket.

$100,000 FCNR(B) deposit, one year, federal tax only. Net interest shown under each bar.

A real return is rarely one clean bracket the whole way through, since brackets are progressive and only the income above each threshold gets taxed at the next rate up.

The chart above simplifies that by treating the FCNR(B) interest as the last dollars you earn for the year, stacked entirely on top of your other income. That is the realistic case for most salaried NRIs, whose interest income is a small slice of a larger W-2 income.

If your total MAGI sits above $200,000 as a single filer or $250,000 married filing jointly, which is common once you are in the 32% bracket or higher, add roughly 3.8% more on top of these numbers. That is the Net Investment Income Tax, and the next section covers why you usually cannot avoid it.

Your bracket doesn't stop at federal tax

The Net Investment Income Tax, or NIIT, adds a 3.8% surtax on the lesser of your net investment income or the amount your MAGI exceeds the threshold. Interest income, including FCNR(B) interest, counts as net investment income under IRC Section 1411.

You might expect a foreign tax credit to soften this too. It generally does not.

Courts have confirmed FTC offsets against NIIT only for the US-France and US-Canada treaties, in Christensen v. US and Bruyea v. US. The IRS's own guidance on the Net Investment Income Tax does not extend that treatment to India, so an NRI in the US cannot rely on it.

Run the numbers for someone in the 35% bracket who is also over the NIIT threshold. Their combined federal rate on that FCNR(B) interest is 38.8%, not 35%.

On the same $7,000 in interest, that is $2,716 in federal tax, leaving $4,284 net, an effective yield of 4.28% against a 7% headline rate. That is more than a third of the advertised return gone before you even get to your state return.

States don't always follow the treaty either

Your state return can add another layer on top of all of this. States are not bound by the US-India tax treaty the way the federal government is, so a state can tax income the treaty otherwise protects at the federal level.

California, with a top marginal rate around 13.3%, and New York, with a top marginal rate around 10.9%, are two states worth checking closely if you live in either one. Both have meaningful top brackets, and neither offers a blanket pass for treaty exempt foreign interest.

The exact impact depends on your state and your total income, so treat the state figures above as a reason to check, not a final number. Confirm your own state's treatment with a preparer who has actually filed cross border returns rather than assuming your state follows federal treatment by default.

What FCNR(B) doesn't protect you from

FCNR(B) protects your principal from rupee moves while the deposit sits in the bank, since you hold it in the original foreign currency, not rupees. That protection ends the moment you convert the proceeds.

If you eventually move the money to India and convert it to rupees, whatever the dollar to rupee rate is on that day becomes part of your real return, not the rate on the day you opened the account. A weaker rupee at withdrawal works in your favor. A stronger rupee works against you.

This cuts both ways, so it is not a guaranteed loss the way the tax treatment is. It is a real unknown if your plan includes spending this money in India, and it is worth weighing on its own, separate from everything above.

Where this leaves FCNR(B) next to your other options

None of this makes FCNR(B) a bad choice. It still offers a real dollar denominated rate with no currency conversion risk on the principal while it sits in the account, which NRE and NRO options do not match in the same way, since NRE deposits sit in rupees and carry that conversion risk instead.

If you are still deciding between NRE, NRO, and FCNR(B) as account types, InvestMates has a full guide comparing NRE, NRO, and FCNR that walks through the tradeoffs beyond tax.

FCNR(B) also is not a PFIC, unlike most Indian mutual funds, so it will not saddle you with Form 8621 filings the way a fund investment can. If PFIC exposure is part of what is steering you toward a bank deposit in the first place, InvestMates has a roundup of PFIC-safe investment options that puts FCNR(B) next to the other choices that avoid the same problem.

So, should you invest in an FCNR(B) deposit?

There is no single right answer here. FCNR(B) still gives you a real, dollar denominated rate with no currency risk while the money sits in the account, and for some NRIs that stability is worth more than squeezing out the last percentage point of yield.

For others, once you add up the ordinary income tax, the missing foreign tax credit, NIIT, state tax, and the currency question on withdrawal, a similar duration dollar alternative ends up ahead after tax. Which one is right for you depends on your bracket, your state, your timeline, and whether you plan to spend this money in the US or in India.

If you want a straight answer for your own numbers instead of a general rule, book a call with an NRI financial advisor. We will run your bracket, state, and goals against the alternatives before you commit.