{
  "tool": "USPS postage calculator: stamps, Certified Mail and price changes",
  "url": "https://tidyfact.com/en-us/postage-calculator/",
  "locale": "en-US",
  "description": "USPS retail postage for letters, large envelopes and postcards, with Certified Mail, Restricted Delivery and Return Receipt fees, the number of Forever stamps to use, price change dates since 2023, the 2026 time-limited price changes and the 2026 holiday mailing dates.",
  "updated": "2026-10-27",
  "factcheck": {
    "by": "claude:claude-opus-5-5",
    "date": "2026-10-27"
  },
  "review": "Facts checked against the listed official sources by an independent AI agent (claude:claude-opus-5-5, 2026-10-27). No human reviewed this page.",
  "license": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/"
  },
  "attribution": "TidyFact, USPS postage calculator: stamps, Certified Mail and price changes, https://tidyfact.com/en-us/postage-calculator/",
  "facts": [
    {
      "label": "Forever stamp (1-ounce stamped letter)",
      "value": 0.82,
      "unit": "USD",
      "display": "$0.82",
      "validFrom": "2026-07-12",
      "asOf": "2026-10-27",
      "source": {
        "title": "Notice 123 – Price List (Effective October 04, 2026)",
        "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Each additional ounce, letter",
      "value": 0.29,
      "unit": "USD",
      "display": "$0.29",
      "validFrom": "2025-07-13",
      "asOf": "2026-10-27",
      "source": {
        "title": "Price and SKU File Archive (price files from January 22, 2023 to July 12, 2026)",
        "url": "https://pe.usps.com/Archive/PriceFile",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Nonmachinable surcharge (letters)",
      "value": 0.49,
      "unit": "USD",
      "display": "$0.49",
      "validFrom": "2025-07-13",
      "asOf": "2026-10-27",
      "source": {
        "title": "Price and SKU File Archive (price files from January 22, 2023 to July 12, 2026)",
        "url": "https://pe.usps.com/Archive/PriceFile",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Postcard",
      "value": 0.65,
      "unit": "USD",
      "display": "$0.65",
      "validFrom": "2026-07-12",
      "asOf": "2026-10-27",
      "source": {
        "title": "Notice 123 – Price List (Effective October 04, 2026)",
        "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Large envelope (flat), 1 ounce",
      "value": 1.69,
      "unit": "USD",
      "display": "$1.69",
      "validFrom": "2026-07-12",
      "asOf": "2026-10-27",
      "source": {
        "title": "Notice 123 – Price List (Effective October 04, 2026)",
        "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Certified Mail fee",
      "value": 5.55,
      "unit": "USD",
      "display": "$5.55",
      "validFrom": "2026-07-12",
      "asOf": "2026-10-27",
      "source": {
        "title": "Notice 123 – Price List (Effective October 04, 2026)",
        "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Certified Mail Restricted Delivery",
      "value": 14.35,
      "unit": "USD",
      "display": "$14.35",
      "validFrom": "2026-07-12",
      "asOf": "2026-10-27",
      "source": {
        "title": "Notice 123 – Price List (Effective October 04, 2026)",
        "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Return Receipt, hard copy (green card)",
      "value": 4.65,
      "unit": "USD",
      "display": "$4.65",
      "validFrom": "2026-07-12",
      "asOf": "2026-10-27",
      "source": {
        "title": "Notice 123 – Price List (Effective October 04, 2026)",
        "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Return Receipt, electronic",
      "value": 2.91,
      "unit": "USD",
      "display": "$2.91",
      "validFrom": "2026-07-12",
      "asOf": "2026-10-27",
      "source": {
        "title": "Notice 123 – Price List (Effective October 04, 2026)",
        "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Global Forever stamp (international 1-ounce letter)",
      "value": 1.75,
      "unit": "USD",
      "display": "$1.75",
      "validFrom": "2026-07-12",
      "asOf": "2026-10-27",
      "source": {
        "title": "Notice 123 – Price List (Effective October 04, 2026)",
        "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "Time-limited price change, Oct 4, 2026 – Jan 17, 2027",
      "formula": "Priority Mail Express, Priority Mail, USPS Ground Advantage and Parcel Select only; stamps and letters not affected",
      "validFrom": "2026-10-04",
      "validUntil": "2027-01-17",
      "asOf": "2026-10-27",
      "source": {
        "title": "U.S. Postal Service Announces Temporary Price Change for 2026 Holiday Shipping Season (Aug. 25, 2026)",
        "url": "https://about.usps.com/newsroom/national-releases/2026/0825-usps-announces-temporary-price-change-for-2026-holiday-shipping-season.htm",
        "publisher": "USPS Newsroom",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "2026 holiday send-by date, First-Class Mail (lower 48)",
      "formula": "Thursday, December 17, 2026 for expected delivery before December 25",
      "validUntil": "2026-12-25",
      "asOf": "2026-10-27",
      "source": {
        "title": "2026 Holiday Shipping Deadlines: Cutoff Dates for December 25",
        "url": "https://www.usps.com/holiday/holiday-shipping-dates.htm",
        "publisher": "USPS",
        "checked": "2026-10-27"
      }
    },
    {
      "label": "2027 stamp prices",
      "formula": "On October 27, 2026, the Postal Explorer price change page lists only the time-limited change from October 4, 2026 to January 17, 2027. It lists no 2027 letter or stamp prices.",
      "asOf": "2026-10-27",
      "source": {
        "title": "Time-Limited 2026 Price Change: Starting October 4, 2026 through January 17, 2027",
        "url": "https://pe.usps.com/PriceChange/Index",
        "publisher": "USPS Postal Explorer",
        "checked": "2026-10-27"
      }
    }
  ],
  "sources": [
    {
      "title": "Notice 123 – Price List (Effective October 04, 2026)",
      "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
      "publisher": "USPS Postal Explorer",
      "checked": "2026-10-27"
    },
    {
      "title": "Price and SKU File Archive (price files from January 22, 2023 to July 12, 2026)",
      "url": "https://pe.usps.com/Archive/PriceFile",
      "publisher": "USPS Postal Explorer",
      "checked": "2026-10-27"
    },
    {
      "title": "DMM 604 Postage Payment Methods and Refunds (1.10 Additional Standards for Forever Stamps)",
      "url": "https://pe.usps.com/text/dmm300/604.htm",
      "publisher": "USPS Postal Explorer",
      "checked": "2026-10-27"
    },
    {
      "title": "DMM 100 Retail Mail Letters, Cards, Flats, and Parcels: 101 Physical Standards (1.2 Nonmachinable Criteria)",
      "url": "https://pe.usps.com/text/dmm300/101.htm",
      "publisher": "USPS Postal Explorer",
      "checked": "2026-10-27"
    },
    {
      "title": "DMM 503 Extra Services (Certified Mail, Return Receipt)",
      "url": "https://pe.usps.com/text/dmm300/503.htm",
      "publisher": "USPS Postal Explorer",
      "checked": "2026-10-27"
    },
    {
      "title": "Time-Limited 2026 Price Change: Starting October 4, 2026 through January 17, 2027",
      "url": "https://pe.usps.com/PriceChange/Index",
      "publisher": "USPS Postal Explorer",
      "checked": "2026-10-27"
    },
    {
      "title": "U.S. Postal Service Announces Temporary Price Change for 2026 Holiday Shipping Season (Aug. 25, 2026)",
      "url": "https://about.usps.com/newsroom/national-releases/2026/0825-usps-announces-temporary-price-change-for-2026-holiday-shipping-season.htm",
      "publisher": "USPS Newsroom",
      "checked": "2026-10-27"
    },
    {
      "title": "U.S. Postal Service Announces Transportation-Related, Time-Limited Price Change (March 25, 2026)",
      "url": "https://about.usps.com/newsroom/national-releases/2026/0325-usps-announces-transportation-related-time-limited-price-change.htm",
      "publisher": "USPS Newsroom",
      "checked": "2026-10-27"
    },
    {
      "title": "U.S. Postal Service Recommends New Prices for July (April 9, 2026)",
      "url": "https://about.usps.com/newsroom/national-releases/2026/0409-usps-recommends-new-prices-for-july.htm",
      "publisher": "USPS Newsroom",
      "checked": "2026-10-27"
    },
    {
      "title": "Mailing & Shipping Prices: Cost of First-Class Stamps",
      "url": "https://www.usps.com/business/prices.htm",
      "publisher": "USPS",
      "checked": "2026-10-27"
    },
    {
      "title": "2026 Holiday Shipping Deadlines: Cutoff Dates for December 25",
      "url": "https://www.usps.com/holiday/holiday-shipping-dates.htm",
      "publisher": "USPS",
      "checked": "2026-10-27"
    },
    {
      "title": "Rates for Domestic Letters Since 1863",
      "url": "https://about.usps.com/who/profile/history/domestic-letter-rates-since-1863.htm",
      "publisher": "USPS Historian",
      "checked": "2026-10-27"
    },
    {
      "title": "Postal Service Recommends 2026 Holiday Mailing and Shipping Dates (Sept. 22, 2026)",
      "url": "https://about.usps.com/newsroom/national-releases/2026/0922-usps-recommends-2026-holiday-mailing-shipping-dates.htm",
      "publisher": "USPS Newsroom",
      "checked": "2026-10-27"
    }
  ]
}