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<!--REG30 V1.0 (16-10-2025)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2025-08-31/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Regulation_30_Restructuring/2025-08-31/in-capmkt/in-capmkt-ent" xmlns:in-capmkt-roles="http://www.sebi.gov.in/xbrl/Regulation_30_Restructuring/2025-08-31/in-capmkt-roles" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.xbrl.org/2003/XLink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2025-08-31.xsd"/><xbrli:context id="OneI"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">MITCON</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-03</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="OneD"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">MITCON</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-03</xbrli:startDate><xbrli:endDate>2026-08-03</xbrli:endDate></xbrli:period></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:ScripCode contextRef="OneI">000000</in-capmkt:ScripCode><in-capmkt:NameOfTheCompany contextRef="OneI">MITCON CONSULTANCY &amp; ENGINEERING SERVICES LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:NSESymbol contextRef="OneI">MITCON</in-capmkt:NSESymbol><in-capmkt:MSEISymbol contextRef="OneI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="OneI">INE828O01033</in-capmkt:ISIN><in-capmkt:TypeOfAnnouncementPertainingToRegulation30Restructuring contextRef="OneD">New</in-capmkt:TypeOfAnnouncementPertainingToRegulation30Restructuring><in-capmkt:TypeOfEventOfAnnouncementPertainingToRegulation30Restructuring contextRef="OneD">Acquisition (including agreement to acquire)</in-capmkt:TypeOfEventOfAnnouncementPertainingToRegulation30Restructuring><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfBoardMeeting contextRef="OneD">false</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfBoardMeeting><in-capmkt:DateOfOccurrenceOfEvent contextRef="OneI">2026-08-03</in-capmkt:DateOfOccurrenceOfEvent><in-capmkt:TimeOfOccurrenceOfEvent contextRef="OneD">18:00:00</in-capmkt:TimeOfOccurrenceOfEvent><in-capmkt:DateOfReport contextRef="OneI">2026-08-03</in-capmkt:DateOfReport><in-capmkt:NameOfAcquirer contextRef="OneI">MITCON Credentia Trusteeship Services Limited</in-capmkt:NameOfAcquirer><in-capmkt:RelationshipOfAcquirerWithTheListedEntity contextRef="OneD">Subsidiary</in-capmkt:RelationshipOfAcquirerWithTheListedEntity><in-capmkt:NameOfTheTargetEntity contextRef="OneI">MITCON Credentia Corporate Support Services Limited</in-capmkt:NameOfTheTargetEntity><in-capmkt:TurnoverOfTargetEntity contextRef="OneD" unitRef="INR" decimals="-7">0</in-capmkt:TurnoverOfTargetEntity><in-capmkt:ProfitAfterTaxOfTargetEntity contextRef="OneD" unitRef="INR" decimals="-7">0</in-capmkt:ProfitAfterTaxOfTargetEntity><in-capmkt:NetWorthOfTargetEntity contextRef="OneD" unitRef="INR" decimals="-5">100000</in-capmkt:NetWorthOfTargetEntity><in-capmkt:OtherFinancialParameterOfTargetEntity contextRef="OneI">0</in-capmkt:OtherFinancialParameterOfTargetEntity><in-capmkt:WhetherTheAcquisitionWouldFallWithinRelatedPartyTransactions contextRef="OneD">false</in-capmkt:WhetherTheAcquisitionWouldFallWithinRelatedPartyTransactions><in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupCompaniesIncludingAssociateOrHoldingOrSubsidiaryOrDirectorOrKMPOrSMPAndItsRelativesHaveAnyInterestInTheEntityBeingAcquired contextRef="OneD">true</in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupCompaniesIncludingAssociateOrHoldingOrSubsidiaryOrDirectorOrKMPOrSMPAndItsRelativesHaveAnyInterestInTheEntityBeingAcquired><in-capmkt:NatureOfInterestAndDetailsThereofForAcquisitionEvent contextRef="OneI">MITCON Credentia Trusteeship Services Limited, subsidiary of MITCON Consultancy &amp; Engineering Services Limited (Ultimate Holding Company) has incorporated a wholly owned subsidiary i.e “MITCON Credentia Corporate Support Services Limited”. SMP is Director in MITCON Credentia Corporate Support Services Limited.</in-capmkt:NatureOfInterestAndDetailsThereofForAcquisitionEvent><in-capmkt:WhetherAcquisitionEventIsDoneAtArmsLength contextRef="OneD">true</in-capmkt:WhetherAcquisitionEventIsDoneAtArmsLength><in-capmkt:IndustryToWhichTheEntityBeingAcquiredBelongs contextRef="OneI">Ancillary Corporate Support and Secretarial Services</in-capmkt:IndustryToWhichTheEntityBeingAcquiredBelongs><in-capmkt:ObjectsAndImpactOfAcquisitionIncludingButNotLimitedToDisclosureOfReasonsForAcquisitionOfTargetEntityIfItsBusinessIsOutsideTheMainLineOfBusinessOfTheListedEntity contextRef="OneI">With an intent to expand business in the field of Ancillary Corporate Support and Secretarial Services. It will result in growth of Ultimate Holding Company.</in-capmkt:ObjectsAndImpactOfAcquisitionIncludingButNotLimitedToDisclosureOfReasonsForAcquisitionOfTargetEntityIfItsBusinessIsOutsideTheMainLineOfBusinessOfTheListedEntity><in-capmkt:WhetherAnyGovernmentalOrRegulatoryApprovalsRequiredForTheAcquisition contextRef="OneD">NA</in-capmkt:WhetherAnyGovernmentalOrRegulatoryApprovalsRequiredForTheAcquisition><in-capmkt:WhetherTheAcquisitionTransactionWillBeInTranches contextRef="OneD">false</in-capmkt:WhetherTheAcquisitionTransactionWillBeInTranches><in-capmkt:IndicativeTimePeriodForCompletionOfTheAcquisition contextRef="OneI">NA as Company was incorporated on July 9, 2026</in-capmkt:IndicativeTimePeriodForCompletionOfTheAcquisition><in-capmkt:NatureOfConsiderationForAcquisitionEvent contextRef="OneD">Cash</in-capmkt:NatureOfConsiderationForAcquisitionEvent><in-capmkt:AmountOfCashConsiderationForAcquisitionEvent contextRef="OneD" unitRef="INR" decimals="-5">100000</in-capmkt:AmountOfCashConsiderationForAcquisitionEvent><in-capmkt:DetailsOfConsiderationForAcquisitionEvent contextRef="OneI">Remittance of Subscription money of Rs. 1,00,000/- on August 3, 2026 towards Subscription of 10,000 Equity shares at par value of Rs. 10 each by  MITCON Credentia Trusteeship Services Limited along with its Nominees</in-capmkt:DetailsOfConsiderationForAcquisitionEvent><in-capmkt:CostOfAcquisitionOrThePriceAtWhichTheSharesAreAcquired contextRef="OneD" unitRef="INR" decimals="-5">100000</in-capmkt:CostOfAcquisitionOrThePriceAtWhichTheSharesAreAcquired><in-capmkt:ExistingPercentageOfShareholdingHeldByAcquirer contextRef="OneI" unitRef="pure" decimals="INF">0</in-capmkt:ExistingPercentageOfShareholdingHeldByAcquirer><in-capmkt:PercentageOfControlAcquired contextRef="OneI" unitRef="pure" decimals="INF">1</in-capmkt:PercentageOfControlAcquired><in-capmkt:PercentageOfAdditionalSharesAcquiredIfExistingHoldingPersists contextRef="OneI" unitRef="pure" decimals="INF">1</in-capmkt:PercentageOfAdditionalSharesAcquiredIfExistingHoldingPersists><in-capmkt:BriefBackgroundAboutTheEntityAcquiredInTermsOfProductsLineOfBusinessAcquired contextRef="OneI">The Entity has been incorporated as a Wholly Owned Subsidiary of MITCON Credentia Trusteeship Services Limited which itself is a subsidiary of the listed entity, which makes the Company a step-down subsidiary of MITCON Consultancy &amp; Engineering Services Limited. The entity was incorporated on July 09, 2026 in India and the Company will be engaged in the field of Ancillary Corporate Support and Secretarial Services. Turnover and last 3 year details are not applicable as the entity is incorporated on July 09, 2026.</in-capmkt:BriefBackgroundAboutTheEntityAcquiredInTermsOfProductsLineOfBusinessAcquired><in-capmkt:DateOfIncorporationForAcquisitionEvent contextRef="OneI">2026-07-09</in-capmkt:DateOfIncorporationForAcquisitionEvent><in-capmkt:CountryInWhichTheAcquiredEntityHasPresence contextRef="OneI">India</in-capmkt:CountryInWhichTheAcquiredEntityHasPresence></xbrli:xbrl>
