FCNR(B) Works Differently Depending on Where You Earn

One Headline Rate, Several Very Different Trades

An FCNR(B) deposit lets an NRI hold a fixed deposit with an Indian bank in foreign currency, with interest that’s tax-free in India and both principal and interest fully repatriable. The product itself hasn’t changed in decades. What’s changed is the pricing: the RBI’s swap window , running until 30 September 2026, has pushed 3-5 year USD rates up to roughly 6-7%, against a more typical 3.5-4%.

Because that subsidy is concentrated in dollars, and because banks market the same headline rate to their entire NRI customer base regardless of where each customer actually lives and earns, a depositor earning UAE dirhams and one earning British pounds see an identical rate card — even though the underlying arithmetic isn’t remotely the same for each of them. Whether converting into FCNR(B) makes sense depends on two things: the rate differential between the FCNR(B) rate and whatever your own money earns at home, and the currency regime your home currency sits in, because a rate gap only survives if it holds up on the round trip back at maturity.

The Rate Picture, Currency by Currency

Representative 3-5 year figures from published Indian bank FCNR(B) rate cards, mid-2026. Individual banks vary, and only USD currently carries the RBI’s swap-subsidised rate — confirm current terms with your bank before relying on any of these.

In five of the seven non-USD currencies above, the same-currency FCNR(B) rate is actually below the depositor’s own domestic reference rate. The only route to the advertised 6%+ region is converting into dollars — and the size of that gap tracks closely with how structurally low each currency’s own rate has been.

Why the Biggest Numbers Sit in the Riskiest Currencies

This is where a simple rate comparison misleads, and it comes down to interest rate parity: if one currency persistently offers a much lower rate than another, markets don’t let that gap sit there as a free lunch. Over time the low-rate currency’s exchange rate tends to compensate — either holding up better than expected, or the high-rate currency depreciating against it. The nominal gap and the currency risk are two sides of the same coin.

The yen is the clearest example. Years of near-zero rates made it the classic funding leg of global carry trades, and it has weakened substantially over the past decade — from around 100-110 to the dollar through much of the 2010s to above 157 today. It has also produced sudden, violent corrections: the August 2024 unwind of yen-funded carry trades helped trigger a sharp global equity selloff within days. JPY and SGD show the largest converted gaps in the table above, and that’s not a coincidence — a large apparent arbitrage and a currency prone to sharp repricing tend to arrive together.

Where the Peg Changes the Calculation

Gulf currencies sit in a genuinely different category. The AED and SAR pegs have held for close to four decades between them, so converting dirhams or riyals into dollars doesn’t carry the exchange-rate risk that converting pounds or euros does — local rates already track the Fed closely because the peg forces them to. The residual gap in the table is closer to a real arbitrage, because the mechanism that would normally erode it has been structurally switched off. The remaining risk is the peg itself being altered — rare and high-impact, not routine volatility.

Singapore is a hybrid: the SGD isn’t pegged in the Gulf sense, but MAS has kept it on a broadly stable path against its trade-weighted basket by design, and some of that expected stability is already priced into its low domestic rates.

Where the Float Changes the Calculation

For GBP, EUR, AUD and CAD, no such anchor exists. GBP/USD alone has traded in roughly a 1.30-1.39 range over the past twelve months — about 6-7% — with no crisis attached, just ordinary floating-currency movement. Over a 3-5 year FCNR(B) term, a much wider range than that is well within historical norms, which means the exchange-rate outcome at maturity, not the rate gap at the outset, ends up dominating the result. Australia is a partial exception: the RBA has been raising rates through 2026 even as the Fed, ECB and BoE held, which keeps AUD’s own reference rate comparatively high and narrows the converted gap.

The Practical Takeaway

None of this is an argument against FCNR(B) — it remains a genuinely useful place to park foreign currency you don’t want exposed to the rupee, and the current FCNR rates are competitive with Western deposit accounts in most cases. The point is narrower: whether converting your home currency into a dollar FCNR(B) deposit makes sense depends heavily on which currency you’re converting from. For Gulf residents it’s close to a structural arbitrage. For anyone earning in a freely floating currency, the exchange-rate outcome at maturity — not the headline rate today — decides whether it worked. Leverage doesn’t change that logic, it just scales it; see our borrow-to-deposit calculator before taking on a leveraged version of this trade.

NRIWallah does not provide financial advice. Reference rates above are central bank policy or benchmark rates, not the specific deposit or borrowing rate any individual would be offered — retail rates typically sit somewhat below or above the policy rate depending on the side of the trade. Rates, pegs and monetary policy stances are current as of early August 2026 and change frequently; confirm current terms directly with your bank and seek independent financial and tax advice for your own circumstances.