JMMB Bank (Trinidad and Tobago) Exchange Rate API: TTD Buy and Sell Rates as JSON

JMMB Bank (T&T) is the Trinidad and Tobago banking arm of Jamaica’s JMMB Group. Its forex page shows a selling rate and non-cash and cash buying rates in TT dollars for 11 currencies. This guide shows how to read that board as JSON: what the rates mean, how they compare with the Central Bank of Trinidad and Tobago official rate and with other banks in Trinidad and Tobago, and the calls that return them.

What the JMMB TT board shows

• 11 currencies against the Trinidad & Tobago dollar: BBD, CAD, CHF, EUR, GBP, GYD, JMD, JPY, SEK, USD and XCD. Every value is TTD per 1 unit of the foreign currency.
• The non-cash buy, sell pair. The Trinidad and Tobago dollar is tightly managed against the US dollar, so USD boards move very little; banks print a cash buying rate, a non-cash (sight) buying rate and one selling rate. The rates here are the non-cash buy against the sell. The Central Bank of Trinidad and Tobago official rate is shown next to each row.
• USD on 15 November 2026: JMMB TT bought at 6.6275 and sold at 6.7793 TTD, a spread of 2.27%. The Central Bank of Trinidad and Tobago official rate was 6.7539, so the bank's mid sat -0.75% from it.
• The bank's own timestamp. The page prints a last-updated stamp (2026-11-13 on the board above), returned as bank_updated_at next to our captured_at.
• Every day's board is kept permanently, from 13 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 15 November 2026 board the tightest spreads were USD (2.27%), JMD (10.46%), SEK (10.52%) and the widest BBD (22.22%), GYD (19.75%), JPY (10.62%). 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.

USD at JMMB TT and other banks in Trinidad and Tobago

USD on the 3 boards AllRatesToday reads in Trinidad and Tobago, all captured on 15 November 2026 (the Central Bank of Trinidad and Tobago official rate was 6.7539):

JMMB TT had the narrowest USD spread of the 3. One call to /api/v1/bank-rates/tt returns every board in the table at once.

Get the board (REST)

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

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

What comes back (the 15 November 2026 board, first three rows):

{
  "bank": "jmmbtt",
  "name": "JMMB Bank (Trinidad and Tobago)",
  "country": "tt",
  "quote_ccy": "TTD",
  "bank_updated_at": "2026-11-13",
  "basis": "Non-cash buy, sell",
  "captured_at": "2026-11-15T11:30:54.116Z",
  "rates": [
    {"ccy":"BBD","buy":3.1003,"sell":3.8754,"mid":3.48785,"spread_pct":22.223,"official":3.6016,"vs_official_pct":-3.158},
    {"ccy":"CAD","buy":4.7307,"sell":5.2564,"mid":4.99355,"spread_pct":10.528,"official":5.1031,"vs_official_pct":-2.147},
    {"ccy":"CHF","buy":8.309,"sell":9.2322,"mid":8.7706,"spread_pct":10.526,"official":null,"vs_official_pct":null},
    … 8 more currencies
  ],
  "disclaimer": "…",
  "attribution": { … }
}

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

curl "https://allratestoday.com/api/v1/bank-rates/tt/jmmbtt?ccy=USD" \
  -H "Authorization: Bearer art_live_your_key"

{
  "bank": "jmmbtt",
  "name": "JMMB Bank (Trinidad and Tobago)",
  "country": "tt",
  "quote_ccy": "TTD",
  "bank_updated_at": "2026-11-13",
  "basis": "Non-cash buy, sell",
  "captured_at": "2026-11-15T11:30:54.116Z",
  "ccy": "USD",
  "buy": 6.6275,
  "sell": 6.7793,
  "mid": 6.7034,
  "spread_pct": 2.265,
  "official": 6.7539,
  "vs_official_pct": -0.748,
  "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 JMMB Bank (Trinidad and Tobago) on its own website, collected by AllRatesToday",
    "bank_url": "https://tt.jmmb.com/forex-rates",
    "url": "https://allratestoday.com/bank-exchange-rate-api/tt/jmmbtt/",
    "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/tt/jmmbtt?date=2026-11-13" \
  -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/tt/jmmbtt/history?ccy=USD&from=2026-11-13&to=2026-11-15" \
  -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' });

// JMMB Bank (Trinidad and Tobago)'s USD row
const r = await client.bankRates('tt', { bank: 'jmmbtt', ccy: 'USD' });
console.log(`JMMB TT buys USD at ${r.buy}, sells at ${r.sell} TTD`);

// The board as it stood on a past day
const past = await client.bankRates('tt', { bank: 'jmmbtt', date: '2026-11-13' });
console.log(past.snapshot_date, past.rates.length);

Python

import requests

r = requests.get(
    "https://allratestoday.com/api/v1/bank-rates/tt/jmmbtt",
    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 Central Bank of Trinidad and Tobago rate is the one tax, accounting and customs rules in Trinidad and Tobago name; nobody transacts at it. JMMB TT'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 Central Bank of Trinidad and Tobago endpoint when a rule asks for the official rate.

FAQ

Where do the JMMB Bank (Trinidad and Tobago) rates come from?

From the bank's own public rates page (https://tt.jmmb.com/forex-rates), read hourly. AllRatesToday does not change the numbers: each row is the buy and sell price JMMB TT shows, with the mid, the spread and the Central Bank of Trinidad and Tobago rate added.

Are these the official TTD exchange rates?

No. They are JMMB TT's retail prices for customers. The official rate in Trinidad and Tobago is the Central Bank of Trinidad and Tobago 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 JMMB TT 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 JMMB TT rates for a past date?

Yes, from 13 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.