NRI Status and Banking for Indian Seafarers: How the Day-Count Actually Works, Why Your NRE Salary Is Tax-Free, and the Notices That Catch You Out

A second officer signs off his foreign-flag tanker at Fujairah, flies home to Kochi, and three months later opens his email to find an intimation under Section 143(1) asking him to explain Rs 38 lakh of credits into his NRE account. He earned that money entirely at sea, on a Liberian-flag vessel, and he was outside India for 210 days that year. He owes nothing. But he had filed no return, kept no copy of his CDC pages, and could not immediately reconstruct his sign-on and sign-off dates. What should have been a thirty-minute reply turned into a four-month back-and-forth with the assessing officer. The tax was always zero. The problem was that he could not prove it on demand.

The 30-second answer: An Indian merchant-navy seafarer is a non-resident for a financial year if days physically in India fall under 182, and Rule 126 says the days at sea on an eligible voyage (Indian port to foreign port or the reverse) do not count as days in India, measured from the sign-on to sign-off dates in your CDC. As a non-resident, salary for services on a foreign-flag ship is not taxable in India even though it lands in your NRE account: CBDT Circular 13/2017 confirms the NRE credit is a remittance, not Indian income. The traps are the borderline year (just over or under 182 days), salary on an Indian-flag ship (which is India-sourced and taxable), and the 143(1) notice on large NRE credits. File a return and keep your CDC.

This guide assumes you already know what an NRE account is and how the basic 182-day test works; if not, start with the NRE, NRO and FCNR guide and the residency and RNOR guide. What follows is the seafarer-specific part that the generic NRI articles skip: how Rule 126 changes the arithmetic, why the flag of the ship is the single fact that decides whether your salary is taxable, where the FEMA definition and the income-tax definition pull apart for you, and the exact shape of the notices the department sends.

Rule 126 is why your day-count is not the day-count residents use

Every NRI is taxed on residency, and residency turns on the 182-day test in Section 6. The seafarer twist is in Rule 126 of the Income Tax Rules, 1962, inserted to give effect to the special way crew days are computed. For an ordinary NRI, a day in India is any day your passport shows you physically present in the country. For a seafarer on an eligible voyage, the days at sea are carved out by reference to a different document entirely: your Continuous Discharge Certificate.

Rule 126 says that for an Indian citizen who is a member of the crew of a ship, the period of stay in India does not include the period beginning on the date entered in the CDC for joining the ship (the sign-on date) and ending on the date entered for signing off (the sign-off date), provided the voyage is an eligible voyage. An eligible voyage is one that originates at a port in India and terminates at a port outside India, or the reverse, performed by a ship carrying passengers or cargo in international traffic and following the route the destination requires.

Read that carefully, because it produces a result that surprises people. The carve-out runs continuously from sign-on to sign-off even if the ship calls at Indian ports during the contract. If you sign on at Mumbai on 2 May and sign off at Singapore on 15 September, and the vessel touched Chennai and Visakhapatnam on coastal legs in July, every single day from 2 May to 15 September is treated as outside India. The CDC dates govern, not the actual position of the ship. This is generous and it is the whole point of the rule: it stops a seafarer being penalised for the routing of a ship he does not control.

The flip side is equally strict. The shore periods, the days between sign-off and your next sign-on when you are home in India, are counted normally, day by day, on your passport stamps. Those are real days in India. The arithmetic of your residency is therefore two numbers added together: the CDC-excluded sea days (which contribute zero) plus your actual shore days in India. If the shore days alone stay under 182, you are a non-resident for the year.

Counting it on a real roster

Abstractions do not help a chief engineer staring at his discharge book in March, so put numbers on it. Take Vikram, an engineer on foreign-flag ships, and his financial year 1 April 2025 to 31 March 2026.

He was home in India from 1 April to 20 May 2025, which is 50 days. He then signed on at Mumbai on 21 May and signed off at Rotterdam on 28 September, a contract recorded in his CDC. Those 131 days are sea days on an eligible voyage and count as zero under Rule 126. He flew home and was in India from 29 September to 12 December, which is 75 days. He signed on again at Cochin on 13 December and was still at sea on 31 March 2026, the year-end, another stretch of CDC sea days that count as zero.

Add only the real India days: 50 plus 75 equals 125 days in India. He is comfortably a non-resident for AY 2026-27, because 125 is below 182. Every rupee of his foreign-ship salary credited to his NRE account is outside the Indian tax net.

Now the counterfactual that shows how thin the margin can get. Suppose Vikram's second sign-on had slipped. He sat at home waiting for a berth from 29 September not to 12 December but to 5 March, an unusually long gap of 158 days. His India days become 50 plus 158 equals 208 days. He is now a resident, the carve-out for his one completed voyage does not save him, and his entire year's salary, the part earned at sea on the foreign ship as well, becomes taxable in India at slab rates. The difference between a zero bill and a tax bill of several lakh rupees was not how hard he worked or where the ship sailed. It was 26 extra days ashore. This is why seafarers near the line manage their leave with a calendar, and why the department's first question in any scrutiny is your exact day-count.

The flag of the ship decides whether the salary is even taxable

Here is the fact that does more work than any other in seafarer taxation, and the one cheap blog advice gets wrong by omission. Residency tells you whether India can tax your worldwide income. The flag of the ship tells you whether the salary is Indian-sourced in the first place. These are two separate questions and you have to clear both.

If you are a non-resident working on a foreign-flag ship (Liberian, Panamanian, Marshall Islands, Singaporean, whatever the registry), your salary accrues outside India for services rendered outside India. It is foreign-sourced and, because you are a non-resident, India has no claim on it. Crediting it to an NRE account changes nothing, which is exactly what CBDT Circular 13/2017 of 11 April 2017 confirms: the salary is not taxable merely because it lands in an Indian-bank NRE account, because the credit is a remittance and not the point of accrual or receipt. Section 5(2)(a), which taxes income received or deemed received in India, does not bite, because the income was received outside India when it accrued and the NRE credit is a subsequent transfer.

If you work on an Indian-flag ship, the analysis is different and harder. Salary paid by an Indian shipping company for service on an Indian-registered vessel is generally treated as income that accrues or arises in India under Section 9, regardless of where the ship physically sails. The source is Indian. That means even a non-resident seafarer can find this salary within the Indian tax net, and TDS under Section 192 is typically deducted by the Indian employer. The carve-out in Rule 126 helps you become a non-resident; it does not convert Indian-source salary into foreign-source salary. So a non-resident seafarer on an Indian-flag ship can still owe Indian tax on that salary, subject to any relief, whereas the identical person on a foreign-flag ship owes nothing.

This is the single most consequential planning fact in the field. Two Indian engineers with identical rosters, identical days, identical pay, sitting in the same mess room, can have opposite tax outcomes because one ship flies a foreign flag and the other flies the Indian tricolour. If you are choosing between offers and tax efficiency matters to you, the registry of the vessel is not a detail. It is the decision.

Why the salary lands tax-free in the NRE account specifically

The NRE account is not magic and it is worth being precise about what it does and does not do, because seafarers sometimes assume the account itself confers the exemption. It does not. The exemption flows from your non-resident status plus the foreign source of the salary. The NRE account is simply the correct destination, and Circular 13/2017 exists precisely because assessing officers were arguing the opposite, that an NRE credit was "received in India" and therefore taxable.

What the NRE account does give you, on top of being the clean home for the salary, is that the interest it earns is itself exempt under Section 10(4)(ii) as long as you remain a non-resident under FEMA. So the principal is tax-free because of how you earned it, and the interest is tax-free because of where you parked it. Money in an NRO account, by contrast, earns interest that is fully taxable in India with TDS deducted, which is covered in the tax on NRO interest guide. The seafarer's discipline is therefore to route the foreign-ship salary into the NRE account and not let it drift into an NRO or, worse, an old resident savings account that should have been redesignated when he first went to sea.

The practical failure I see most often is not a tax mistake at all. It is a seafarer who never converted his pre-sea resident savings account, kept receiving salary into it for two or three years, and then has to explain to both the bank and the department why non-resident salary sat in a resident account. The fix is to redesignate or open the right accounts at the start, covered in opening an NRE or NRO account from abroad.

FEMA says one thing, the Income Tax Act says another, and both apply to you

This is where seafarers get genuinely confused, and the confusion is justified, because the law really does run two parallel definitions of "non-resident" that do not agree.

The Income Tax Act decides your status purely on a day-count for the year, year by year, with Rule 126 carving out your sea days. It is mechanical and it can flip every single year depending on how many days you happened to spend ashore.

FEMA decides residential status differently. Under FEMA, a person who leaves India or stays outside India for employment, or for any purpose indicating an intention to stay outside India for an uncertain period, becomes a person resident outside India. The test is about purpose and intention, not a precise day-count. For a seafarer who has taken up a seagoing career, the intention test is generally satisfied from the time he leaves for employment abroad, which is what lets him open and operate NRE and NRO accounts under FEMA even in a year where his income-tax day-count might wobble close to the line.

The two definitions serving two different masters has a real consequence. Your bank cares about FEMA, because account eligibility, repatriation and the rules on what you can hold are FEMA matters. The income tax department cares about the Act, because that is what decides your tax bill. So you can be, in a single year, a person resident outside India for FEMA (entitled to your NRE account) and yet a resident for income tax (because you happened to spend over 182 days ashore that year). In that year your NRE account remains a valid FEMA account, but your foreign-ship salary becomes taxable, because tax follows the Act, not FEMA. The honest framing is that holding the NRE account does not, on its own, prove you are a non-resident for tax. Many seafarers conflate the two and assume the account guarantees the exemption. It does not. The day-count does.

The notices seafarers actually get, and how to close them

The income tax department's data systems are good now. They see your NRE credits through the bank's reporting, they see your PAN, and they flag large unexplained inflows automatically. A seafarer who files nothing is not invisible; he is conspicuous. The common notices fall into a short list.

The most frequent is an intimation or query referencing large NRE credits, often under Section 143(1) processing or a Section 133(6) information request, asking you to explain the source of money credited to your account. The reply is straightforward if you have the documents: a copy of your CDC pages showing sign-on and sign-off dates, your employment contract or letter of appointment showing the foreign-flag vessel and that the employer is a foreign principal, your passport pages establishing your shore days, and your salary statements. Together these prove non-resident status and foreign source, and the matter closes.

A second pattern is a defective return or status-mismatch notice, where a seafarer filed as a resident by mistake (or the utility defaulted him to resident) and the department questions why foreign salary was shown as exempt. The cure is to file with the correct residential status from the start, declaring non-resident and reporting the exempt salary in the exempt-income schedule rather than leaving it off the return entirely. Leaving large sums entirely off the return is what triggers the question; disclosing them as exempt is what prevents it.

A third, rarer but more serious situation is a reassessment notice under Section 148 for an earlier year where no return was filed and the credits were large. These are harder and slower to resolve precisely because the documents are years old and memories of exact dates have faded. This is the strongest argument for filing every year even when no tax is due. The cost of filing is a few hours; the cost of reconstructing a non-resident claim under a 148 notice five years later is an accountant's fee and months of stress. The responding to NRI tax notices guide and the ITR filing guide for AY 2026-27 cover the filing mechanics; the point here is narrower. For a seafarer, the return is not about paying tax. It is the receipt that proves you do not owe any.

A clean comparison of who pays what

The whole picture compresses into a single table once you separate the two questions, status and source.

Your situation that year	Residential status (tax)	Ship's flag	Is foreign-ship salary taxable in India?
Under 182 India days	Non-resident	Foreign flag	No. Exempt; NRE credit is a remittance (Circular 13/2017)
Under 182 India days	Non-resident	Indian flag	Generally yes. Salary is India-sourced under Section 9
182 days or more in India	Resident	Foreign flag	Yes. Worldwide income taxable; the sea-day carve-out did not save you
182 days or more in India	Resident	Indian flag	Yes. India-sourced and you are resident
Just over 15 lakh Indian income, 120 to 181 days	See edge cases below	Either	Foreign salary usually stays out via RNOR; confirm

The table makes the two levers obvious. The flag of the ship and the day-count are the only two things that move the answer. Everything else is paperwork.

Edge cases

The 120-day rule almost never bites a seafarer, but know why. Since AY 2021-22, an Indian citizen with Indian income above Rs 15 lakh who spends 120 to 181 days in India can be treated as resident, and there is a separate deemed-resident provision for those not liable to tax anywhere. For a typical seafarer this is a non-event for one reason: foreign-ship salary is not Indian income, so it does not count toward the Rs 15 lakh threshold. Only Indian-source income (Indian rent, interest, capital gains) does. Most seafarers do not have Rs 15 lakh of Indian-source income, so the 120-day trigger never fires. If you do cross Rs 15 lakh of Indian income and land in the 120-to-181-day band, you are typically classified as Resident but Not Ordinarily Resident, and an RNOR's foreign income generally stays outside Indian tax, so the foreign-ship salary usually remains exempt anyway. The detail matters enough to confirm in a borderline year; the RNOR mechanics are in the residency and RNOR guide.

Joining or quitting the sea mid-career creates a split year. The year you first go to sea, or the year you stop, often has too many India days because you spent months ashore before the first contract or after the last. That year you may be resident, and salary earned in it may be taxable. Plan the timing of your first or last contract with the year-end in mind where you can.

The CDC carve-out is only for eligible voyages. A purely coastal contract that begins and ends at Indian ports without an international leg is not an eligible voyage, so those days do not get the Rule 126 exclusion. Read your CDC entries; the rule attaches to the international voyage, not to the fact of being a seafarer.

Indian-flag salary may still get treaty relief. If you are a non-resident on an Indian-flag ship and also tax-resident somewhere with an Indian treaty, the relevant article on shipping or employment income, and a foreign tax credit, can reduce double taxation. This is genuinely treaty-specific and not a do-it-yourself exercise; see the DTAA relief guide routes and take advice on your specific country.

The closing read

The honest read is that seafarer taxation is not complicated once you accept that two separate questions are running at the same time, and that you control both. The first question is status: did your actual India days, with the CDC sea days carved out under Rule 126, stay under 182. The second is source: what flag did your ship fly. Clear both, foreign flag and under 182 days, and your salary into an NRE account is genuinely tax-free, no asterisk, with Circular 13/2017 squarely on your side.

So for the typical foreign-flag seafarer, the recommendation is simple and firm. Keep a running tally of your India days from your passport, treat 150 days ashore as your soft ceiling so a delayed berth does not push you over 182, route every salary credit into the NRE account and nowhere else, keep photographs of every CDC sign-on and sign-off page in a folder you can find in five minutes, and file an income-tax return every single year declaring non-resident status and showing the salary as exempt income, even though the tax is zero. That last habit is the whole defence; the return is the receipt that turns a four-month notice into a thirty-minute reply.

The exceptions who should take real advice rather than rely on this or any article are three: anyone on an Indian-flag ship, where the salary is India-sourced and the position is genuinely harder; anyone in a borderline year straddling 182 days or crossing Rs 15 lakh of Indian income; and anyone facing a Section 148 reassessment for an old unfiled year. For everyone else, the rules are clear, the exemption is real, and the only way to lose it is sloppy day-counting or an empty paperwork folder.

Related guides

• NRE, NRO and FCNR accounts compared
• NRI residency and RNOR rules
• Opening an NRE or NRO account from abroad
• ITR filing for NRIs: AY 2026-27
• Tax on NRO interest
• All Banking guides
• All Taxation guides

This guide is educational and general in nature. It is not individual tax advice. A seafarer's outcome depends on exact CDC dates, passport stamps, the flag and registry of each vessel, the employer's structure and any applicable treaty, and several of these rules turn on facts the department will ask you to prove. Confirm your specific position with a qualified chartered accountant, particularly in any year you are near the 182-day line or working on an Indian-flag ship.