content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
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      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001819244</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001806837</issuerCik>
        <issuerName>Vertex, Inc.</issuerName>
        <secFileNumber>001-39413</secFileNumber>
        <issuerAddress>
          <com:street1>2301 RENAISSANCE BOULEVARD</com:street1>
          <com:city>KING OF PRUSSIA</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19406</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>(800) 355-3500</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>ITEM SECOND IRR. TRUST FBO KYLE R. WESTPHAL u/a of JEFFREY R. WESTPHAL dated October 5, 2001</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Class A Common Stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>245 Summer Street</com:street1>
            <com:city>Boston</com:city>
            <com:stateOrCountry>MA</com:stateOrCountry>
            <com:zipCode>02110</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>1000000</noOfUnitsSold>
        <aggregateMarketValue>24210000.00</aggregateMarketValue>
        <noOfUnitsOutstanding>55245904</noOfUnitsOutstanding>
        <approxSaleDate>11/01/2023</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A Common Stock</securitiesClassTitle>
        <acquiredDate>10/05/2001</acquiredDate>
        <natureOfAcquisitionTransaction>Acquired as a gift</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Irrevocable Trust Jeffrey Westphal</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1000000</amountOfSecuritiesAcquired>
        <paymentDate>10/05/2001</paymentDate>
        <natureOfPayment>N/A</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>11/01/2023</noticeDate>
        <signature>/s/ Myra King, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for ITEM SECOND IRR. TRUST FBO KYLE R. WEST</signature>
      </noticeSignature>
    </formData>
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text: 144
  0001819244
  XXXXXXXX
  LIVE
  0001806837
  Vertex, Inc.
  001-39413
  2301 RENAISSANCE BOULEVARD
  KING OF PRUSSIA
  PA
  19406
  (800) 355-3500
  ITEM SECOND IRR. TRUST FBO KYLE R. WESTPHAL u/a of JEFFREY R. WESTPHAL dated October 5, 2001
  10% Stockholder
  Class A Common Stock
  Fidelity Brokerage Services LLC
  245 Summer Street
  Boston
  MA
  02110
  1000000
  24210000.00
  55245904
  11/01/2023
  NASDAQ
  Class A Common Stock
  10/05/2001
  Acquired as a gift
  Irrevocable Trust Jeffrey Westphal
  N
  1000000
  10/05/2001
  N/A
  Y
  11/01/2023
  /s/ Myra King, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for ITEM SECOND IRR. TRUST FBO KYLE R. WEST