Before you start

A Taxpayer's Identification Number (TIN) from the NBR
A day count against the 1 July–30 June income year
Salary certificates and records of any foreign income
A Bangladeshi bank account

Step-by-step

1
Do the day count properly — 182 days, two limbs, July to June
You are resident if present for 182 days or more in the income year, or for 90 days or more in the income year if you were present for more than 365 days across the four preceding years. The year runs 1 July to 30 June. All three elements differ from the common assumption, and residence is determined purely by presence regardless of your residency elsewhere.
OnlineWho: YouOn arrival
2
Obtain a TIN
Registration is done through the NBR's e-TIN system. Employers generally require it, banks ask for it, and it is the precondition for filing anything.
OnlineWho: YouMonth 1
3
Understand the non-resident flat rate before you plan your days
Non-residents are taxed at a flat rate on Bangladesh-source income rather than on the progressive scale that applies to residents. Depending on your income level, crossing or not crossing the residency threshold can move the answer significantly in either direction. Model it rather than assuming residence is always worse.
OnlineWho: You
4
File the annual return
Returns are filed with your local tax circle under the Income Tax Act 2023, with e-filing increasingly available. An employer's withholding does not remove the individual filing obligation.
OnlineWho: YouAnnually
5
Get a Tax Residency Certificate if you need to prove it at home
If you are tax resident here, the NBR can issue a certificate to that effect, which is what your home country's tax authority will want as evidence under a double taxation treaty. Request it well before you need it.
In personWho: You
6
Start the tax clearance certificate six to eight weeks before permanent departure
A person not domiciled in Bangladesh may not leave without one. For a permanent departure it means filing a return covering 1 July to the departure date, with estimated income to departure included, and obtaining the certificate from your local tax circle. It requires your presence and it is not quick.
In personWho: You6–8 weeks before departure

Documents you’ll need

TIN certificate
Salary certificate and withholding statements
Bank statements
Records of foreign income and any foreign tax paid
Tax clearance certificate, on permanent departure

Things most newcomers don’t know

The threshold is 182 days, not 183, and there is a second limb most people never hear about.

Bangladeshi residence turns on presence of 182 days or more in the income year, or 90 days or more in the income year where you were in Bangladesh for more than 365 days across the four preceding years. That second limb catches people on repeated short assignments who assume they are safely non-resident. Residence is determined purely by physical presence, irrespective of where else you are resident. Anyone transferring a 183-day calendar-year habit from another country has three separate things wrong at once.

Source: National Board of Revenue; Income Tax Act 2023

The income year runs 1 July to 30 June, which changes where the line falls.

Bangladesh's income year is not the calendar year. An arrival in January and an arrival in August produce completely different first-year outcomes, and a departure in May falls inside the same income year as the previous September while a departure in August does not. For anyone timing a move — and expatriate postings are often timed — this is worth an hour with a calendar before signing a contract.

Source: National Board of Revenue

You cannot leave permanently without a tax clearance certificate, and it takes weeks.

The law provides that a person not domiciled in Bangladesh shall not leave without obtaining a tax clearance certificate from the income tax authority. In practice that means an exit return covering 1 July to your departure date, filed at your local tax circle with estimated income to departure included, and a certificate issued in return. It requires your physical presence and cannot be done from abroad. People spend their last month on handovers and then meet this, which is why departures from Bangladesh so often slip.

Source: National Board of Revenue

The flat non-resident rate means residence is not automatically the worse outcome — model it.

Non-residents are taxed at a flat rate on Bangladesh-source income while residents face the progressive scale on worldwide income. Depending on your income level and the shape of your foreign income, either can be better. The instinct to avoid tax residence everywhere is not automatically right in Bangladesh, and for some salary levels the resident position is more favourable. This is genuinely worth modelling with an adviser in your first year rather than assuming.

Source: National Board of Revenue