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>0001818885</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>Stamm John Richard</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>6500</noOfUnitsSold>
        <aggregateMarketValue>191590.58</aggregateMarketValue>
        <noOfUnitsOutstanding>61673585</noOfUnitsOutstanding>
        <approxSaleDate>03/05/2024</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <acquiredDate>06/14/2022</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>6500</amountOfSecuritiesAcquired>
        <paymentDate>06/14/2022</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Richard Stamm</name>
          <address>
            <com:street1>2301 Renaissance Blvd</com:street1>
            <com:city>King of Prussia</com:city>
            <com:stateOrCountry>PA</com:stateOrCountry>
            <com:zipCode>19406</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <saleDate>12/15/2023</saleDate>
        <amountOfSecuritiesSold>10000</amountOfSecuritiesSold>
        <grossProceeds>268483.28</grossProceeds>
      </securitiesSoldInPast3Months>
      <remarks>Richard Stamm and John Richard Stamm are one and the same person.</remarks>
      <noticeSignature>
        <noticeDate>03/05/2024</noticeDate>
        <signature>/s/ Kevin Johnson, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Richard Stamm</signature>
      </noticeSignature>
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text: 144
  0001818885
  XXXXXXXX
  LIVE
  0001806837
  Vertex, Inc.
  001-39413
  2301 RENAISSANCE BOULEVARD
  KING OF PRUSSIA
  PA
  19406
  (800) 355-3500
  Stamm John Richard
  Director
  Class A
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  6500
  191590.58
  61673585
  03/05/2024
  NASDAQ
  Class A
  06/14/2022
  Restricted Stock Vesting
  Issuer
  N
  6500
  06/14/2022
  Compensation
  N
  Richard Stamm
  2301 Renaissance Blvd
  King of Prussia
  PA
  19406
  Class A
  12/15/2023
  10000
  268483.28
  Richard Stamm and John Richard Stamm are one and the same person.
  03/05/2024
  /s/ Kevin Johnson, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Richard Stamm