Dutch-Bangla Bank is a private commercial bank in Bangladesh, listed on the Dhaka and Chittagong stock exchanges. Its treasury issues a daily rate sheet with TT, OD and bill selling and buying rates, cash notes and forward US dollar rates; the ready TT pair is shown here. This guide shows how to read that board as JSON: what the rates mean, how they compare with the Bangladesh Bank official rate, and the calls that return them.

What the DBBL board shows

  • 11 currencies against the Bangladeshi taka: AED, AUD, CAD, CHF, CNY, EUR, GBP, JPY, SAR, SGD and USD. Every value is BDT per 1 unit of the foreign currency.
  • The ready TT buy / sell pair. Bangladeshi banks set their own daily taka buying and selling rates within the framework Bangladesh Bank sets, and each treasury issues a daily rate sheet with separate TT, OD/bill and cash-note rates. Bangladesh’s weekend is Friday and Saturday, so the newest sheet on a Friday is Thursday’s. Bangladesh Bank sets the official rate.
  • USD on 13 November 2026: DBBL bought at 123.75 and sold at 124.95 BDT, a spread of 0.96%. The Bangladesh Bank official rate was 124.75, so the bank's mid sat -0.32% from it.
  • The bank's own timestamp. The page prints a last-updated stamp (12/Nov/2026 on the board above), returned as bank_updated_at next to our captured_at.
  • Every day's board is kept permanently, from 12 November 2026. Read one past day with ?date=, or a range for one currency with the /history endpoint (paid plans).

Spreads across the board

On the 13 November 2026 board the tightest spreads were USD (0.96%), SAR (1.38%), AED (1.38%) and the widest EUR (2.33%), SGD (1.75%), JPY (1.75%). Spread is (sell − buy) ÷ mid: what a round trip through the bank costs, before any fees. The API returns it on every row as spread_pct, so you can rank currencies or alert when a bank widens its board.

Get the board (REST)

You need an API key; the free key works. The full board:

curl "https://allratestoday.com/api/v1/bank-rates/bd/dbbl" \ -H "Authorization: Bearer art_live_your_key"

What comes back (the 13 November 2026 board, first three rows):

{ "bank": "dbbl", "name": "Dutch-Bangla Bank", "country": "bd", "quote_ccy": "BDT", "bank_updated_at": "12/Nov/2026", "basis": "Ready TT buy / sell", "captured_at": "2026-11-13T13:37:25.264Z", "rates": [ {"ccy":"AED","buy":33.6936,"sell":34.1617,"mid":33.92765,"spread_pct":1.38,"official":null,"vs_official_pct":null}, {"ccy":"AUD","buy":84.5955,"sell":85.9281,"mid":85.2618,"spread_pct":1.563,"official":85.4288,"vs_official_pct":-0.195}, {"ccy":"CAD","buy":86.7934,"sell":88.2665,"mid":87.52995,"spread_pct":1.683,"official":87.5377,"vs_official_pct":-0.009}, … 8 more currencies ], "disclaimer": "…", "attribution": { … } }

One currency, with the row fields at the top level:

curl "https://allratestoday.com/api/v1/bank-rates/bd/dbbl?ccy=USD" \ -H "Authorization: Bearer art_live_your_key" 
{ "bank": "dbbl", "name": "Dutch-Bangla Bank", "country": "bd", "quote_ccy": "BDT", "bank_updated_at": "12/Nov/2026", "basis": "Ready TT buy / sell", "captured_at": "2026-11-13T13:37:25.264Z", "ccy": "USD", "buy": 123.75, "sell": 124.95, "mid": 124.35, "spread_pct": 0.965, "official": 124.75, "vs_official_pct": -0.321, "disclaimer": "Retail buy/sell rates as displayed on each bank’s own website at capture time, quoted as home currency per 1 unit of foreign currency. Indicative only: banks change these through the day, apply them at the counter or in-app, and they are not official or reference rates. For the rate a regulation names, use the central-bank endpoints.", "attribution": { "source": "Board rates published by Dutch-Bangla Bank on its own website, collected by AllRatesToday", "bank_url": "https://www.dutchbanglabank.com/fc/Exchange-Rate.pdf", "url": "https://allratestoday.com/bank-exchange-rate-api/bd/dbbl/", "terms": "Public pages that show the rates need a visible link to allratestoday.com" } }

The board as it stood on a past day:

curl "https://allratestoday.com/api/v1/bank-rates/bd/dbbl?date=2026-11-06" \ -H "Authorization: Bearer art_live_your_key"

One currency over a date range, one row per day (paid plans; add &format=csv, xml or xlsx for a file):

curl "https://allratestoday.com/api/v1/bank-rates/bd/dbbl/history?ccy=USD&from=2026-11-12&to=2026-11-13" \ -H "Authorization: Bearer art_live_your_key"

JavaScript 

npm install @allratestoday/sdk 
import { AllRatesToday } from '@allratestoday/sdk'; const client = new AllRatesToday({ apiKey: 'art_live_your_key' }); // Dutch-Bangla Bank's USD row const r = await client.bankRates('bd', { bank: 'dbbl', ccy: 'USD' }); console.log(`DBBL buys USD at ${r.buy}, sells at ${r.sell} BDT`); // The board as it stood on a past day const past = await client.bankRates('bd', { bank: 'dbbl', date: '2026-11-06' }); console.log(past.snapshot_date, past.rates.length);

Python 

import requests r = requests.get( "https://allratestoday.com/api/v1/bank-rates/bd/dbbl", headers={"Authorization": "Bearer art_live_your_key"}, timeout=10, ) r.raise_for_status() for row in r.json()["rates"]: print(row["ccy"], row["buy"], row["sell"], row["spread_pct"])

Board rate or official rate?

The Bangladesh Bank rate is the one tax, accounting and customs rules in Bangladesh name; nobody transacts at it. DBBL's board is the price a customer actually gets. The API puts both on every row: official is the central bank's rate for the same currency and vs_official_pct is how far the bank's mid sits from it. Use the board to show customers a real price, compare banks for a remittance, or keep a dated record of what the bank quoted; use the Bangladesh Bank endpoint when a rule asks for the official rate.

FAQ

Where do the Dutch-Bangla Bank rates come from?

From the bank's own public rates page (https://www.dutchbanglabank.com/fc/Exchange-Rate.pdf), read hourly. AllRatesToday does not change the numbers: each row is the buy and sell price DBBL shows, with the mid, the spread and the Bangladesh Bank rate added.

Are these the official BDT exchange rates?

No. They are DBBL's retail prices for customers. The official rate in Bangladesh is the Bangladesh Bank rate, which the API returns as official on each row where the central bank has one, and in full from the central-bank endpoint.

How often is the DBBL board updated?

AllRatesToday reads the page every hour. The bank's own last-updated stamp is returned as bank_updated_at, so you can tell a fresh read of an unchanged board from a new board.

Can I get DBBL rates for a past date?

Yes, from 12 November 2026 onward; every day's board is kept permanently. Add ?date=YYYY-MM-DD for one day: the response is the board captured that day, or the nearest earlier day within five days, with date_requested and snapshot_date added. For a range, /history?ccy=USD&from=…&to=… returns one row per day as JSON, CSV, XML or XLSX on paid plans.

Do I need an API key?

Yes. Commercial bank boards need an API key; any plan works, the free key included, and each call counts against the plan. Public pages or widgets that show the rates need a visible link to allratestoday.com.

Live board, refreshed hourly: Dutch-Bangla Bank rates on AllRatesToday. Every bank in Bangladesh side by side: Bangladesh bank rates.