{
  "id": "th-deposit-rate-fixed-12m-big4",
  "title": "Thai big-four bank 12-month fixed-deposit rate",
  "metric": "Time-weighted annual mean 12-month fixed-deposit rate, four largest Thai commercial banks",
  "unit": "% per year",
  "kind": "rate",
  "volatility": "static",
  "direction_note": "the account beside the one the visa money sits in; the gap between this series and th-deposit-rate-savings-big4 is what the choice of account is worth",
  "publisher": "No Margin Left",
  "source": {
    "label": "Bank of Thailand, Deposit Rates of Commercial Banks (Deposit Rate_ENG.xlsx) — 46,326 data rows, 32 named commercial banks and foreign branches, 1,564 business days, 4 January 2017 to 9 June 2023. Downloaded and parsed in full; the annual figures below are the author's time-weighted aggregation over that panel, not a Bank of Thailand publication.\n",
    "url": "https://www.bot.or.th/en/statistics/interest-rate.html"
  },
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "No Margin Left, \"Thai big-four bank 12-month fixed-deposit rate\" (Time-weighted annual mean 12-month fixed-deposit rate, four largest Thai commercial banks). CC BY 4.0. https://nomarginleft.com/data/th-deposit-rate-fixed-12m-big4.json",
  "canonical": "https://nomarginleft.com/data/th-deposit-rate-fixed-12m-big4.json",
  "csv": "https://nomarginleft.com/data/th-deposit-rate-fixed-12m-big4.csv",
  "retrieved": "2026-08-16",
  "stale": false,
  "observations": [
    {
      "date": "2017",
      "value": 1.375,
      "confidence": "sourced",
      "checked": "2026-08-16",
      "note": "On 4 January 2017 Bangkok Bank posted 1.50, Krung Thai 1.30, Kasikornbank 1.30 and Siam Commercial Bank 1.40. Against the savings mean of 0.500 the gap is 0.875 points, or 7,000 THB a year on 800,000.\n",
      "readings": [
        {
          "value": 1.375,
          "source": {
            "label": "Bank of Thailand, Deposit Rate_ENG.xlsx — four-bank time-weighted mean, all 2017 panel dates",
            "url": "https://www.bot.or.th/content/dam/bot/documents/en/statistics/Deposit%20Rate_ENG.xlsx"
          },
          "retrieved_via": "full download and parse of the historical panel, 2026-08-14"
        },
        {
          "value": 1.289,
          "source": {
            "label": "World Bank World Development Indicators FR.INR.DPST, deposit interest rate, Thailand",
            "url": "https://api.worldbank.org/v2/country/THA;PHL/indicator/FR.INR.DPST?format=json&date=2005:2027"
          },
          "retrieved_via": "World Bank API, 2026-07-13 vintage"
        }
      ],
      "rationale": "Both readings describe a term deposit and they are close, which is the point of keeping them together. The panel value wins because it is the published rate at the four named banks a retirement deposit is actually held with, weighted by the days each rate stood; the World Bank figure is one annual number per country, published with a year's lag, and is recorded here as corroboration of the level rather than as the source of it.\n"
    },
    {
      "date": "2018",
      "value": 1.375,
      "confidence": "sourced",
      "checked": "2026-08-16",
      "readings": [
        {
          "value": 1.375,
          "source": {
            "label": "Bank of Thailand, Deposit Rate_ENG.xlsx — four-bank time-weighted mean, all 2018 panel dates",
            "url": "https://www.bot.or.th/content/dam/bot/documents/en/statistics/Deposit%20Rate_ENG.xlsx"
          },
          "retrieved_via": "full download and parse of the historical panel, 2026-08-14"
        },
        {
          "value": 1.288,
          "source": {
            "label": "World Bank World Development Indicators FR.INR.DPST, deposit interest rate, Thailand",
            "url": "https://api.worldbank.org/v2/country/THA;PHL/indicator/FR.INR.DPST?format=json&date=2005:2027"
          },
          "retrieved_via": "World Bank API, 2026-07-13 vintage"
        }
      ]
    },
    {
      "date": "2019",
      "value": 1.358,
      "confidence": "sourced",
      "checked": "2026-08-16",
      "readings": [
        {
          "value": 1.358,
          "source": {
            "label": "Bank of Thailand, Deposit Rate_ENG.xlsx — four-bank time-weighted mean, all 2019 panel dates",
            "url": "https://www.bot.or.th/content/dam/bot/documents/en/statistics/Deposit%20Rate_ENG.xlsx"
          },
          "retrieved_via": "full download and parse of the historical panel, 2026-08-14"
        },
        {
          "value": 1.417,
          "source": {
            "label": "World Bank World Development Indicators FR.INR.DPST, deposit interest rate, Thailand",
            "url": "https://api.worldbank.org/v2/country/THA;PHL/indicator/FR.INR.DPST?format=json&date=2005:2027"
          },
          "retrieved_via": "World Bank API, 2026-07-13 vintage"
        }
      ]
    },
    {
      "date": "2020",
      "value": 0.662,
      "confidence": "sourced",
      "checked": "2026-08-16",
      "note": "roughly halves as the policy rate comes down; the savings mean halves with it, so the gap narrows to 2,547 THB on 800,000.",
      "readings": [
        {
          "value": 0.662,
          "source": {
            "label": "Bank of Thailand, Deposit Rate_ENG.xlsx — four-bank time-weighted mean, all 2020 panel dates",
            "url": "https://www.bot.or.th/content/dam/bot/documents/en/statistics/Deposit%20Rate_ENG.xlsx"
          },
          "retrieved_via": "full download and parse of the historical panel, 2026-08-14"
        },
        {
          "value": 0.622,
          "source": {
            "label": "World Bank World Development Indicators FR.INR.DPST, deposit interest rate, Thailand",
            "url": "https://api.worldbank.org/v2/country/THA;PHL/indicator/FR.INR.DPST?format=json&date=2005:2027"
          },
          "retrieved_via": "World Bank API, 2026-07-13 vintage"
        }
      ]
    },
    {
      "date": "2021",
      "value": 0.437,
      "confidence": "sourced",
      "checked": "2026-08-16",
      "note": "The narrowest year in the panel. The gap to savings is 0.187 points, or 1,496 THB a year on 800,000 — the year the choice of account came closest to not mattering.\n",
      "readings": [
        {
          "value": 0.437,
          "source": {
            "label": "Bank of Thailand, Deposit Rate_ENG.xlsx — four-bank time-weighted mean, all 2021 panel dates",
            "url": "https://www.bot.or.th/content/dam/bot/documents/en/statistics/Deposit%20Rate_ENG.xlsx"
          },
          "retrieved_via": "full download and parse of the historical panel, 2026-08-14"
        },
        {
          "value": 0.406,
          "source": {
            "label": "World Bank World Development Indicators FR.INR.DPST, deposit interest rate, Thailand",
            "url": "https://api.worldbank.org/v2/country/THA;PHL/indicator/FR.INR.DPST?format=json&date=2005:2027"
          },
          "retrieved_via": "World Bank API, 2026-07-13 vintage"
        }
      ]
    },
    {
      "date": "2022",
      "value": 0.511,
      "confidence": "sourced",
      "checked": "2026-08-16",
      "readings": [
        {
          "value": 0.511,
          "source": {
            "label": "Bank of Thailand, Deposit Rate_ENG.xlsx — four-bank time-weighted mean, all 2022 panel dates",
            "url": "https://www.bot.or.th/content/dam/bot/documents/en/statistics/Deposit%20Rate_ENG.xlsx"
          },
          "retrieved_via": "full download and parse of the historical panel, 2026-08-14"
        },
        {
          "value": 0.51,
          "source": {
            "label": "World Bank World Development Indicators FR.INR.DPST, deposit interest rate, Thailand",
            "url": "https://api.worldbank.org/v2/country/THA;PHL/indicator/FR.INR.DPST?format=json&date=2005:2027"
          },
          "retrieved_via": "World Bank API, 2026-07-13 vintage"
        }
      ],
      "rationale": "The closest agreement anywhere in the panel: 0.511 against the World Bank's 0.510, a thousandth of a point apart, in a year when the savings mean was 0.263. The panel value is still what resolves — it is the primary reading and the two are not independent — but this row is the cleanest available evidence of which account the headline series is describing.\n"
    },
    {
      "date": "2023",
      "value": 1.176,
      "confidence": "sourced",
      "checked": "2026-08-16",
      "note": "PARTIAL YEAR — 1 January to 9 June 2023, the panel's last date, not comparable with the full years above without prorating. On 9 June: Bangkok Bank 1.35, Krung Thai 1.45, Kasikornbank 1.40–1.45, Siam Commercial Bank 1.45. Then the file stops.\n",
      "readings": [
        {
          "value": 1.176,
          "source": {
            "label": "Bank of Thailand, Deposit Rate_ENG.xlsx — four-bank time-weighted mean, 2023 panel dates to 9 June",
            "url": "https://www.bot.or.th/content/dam/bot/documents/en/statistics/Deposit%20Rate_ENG.xlsx"
          },
          "retrieved_via": "full download and parse of the historical panel, 2026-08-14"
        },
        {
          "value": 1.374,
          "source": {
            "label": "World Bank World Development Indicators FR.INR.DPST, deposit interest rate, Thailand",
            "url": "https://api.worldbank.org/v2/country/THA;PHL/indicator/FR.INR.DPST?format=json&date=2005:2027"
          },
          "retrieved_via": "World Bank API, 2026-07-13 vintage"
        }
      ],
      "rationale": "As on the savings ledger, the 2023 value covers 160 of 365 days and is left unprorated so it remains the same quantity as the six complete years. The World Bank's 1.374 is a full-year figure and is recorded, not used. Nothing between 9 June 2023 and Bangkok Bank's published card of 18 June 2026 is interpolated; that card is one bank on one day and is deliberately not appended here, because this series is a four-bank mean and a single-bank reading is a different metric.\n"
    }
  ],
  "corrections": []
}