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Top 15 Managed IT Services Companies for Accounting Firms (2026)

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    Bereikte 13.000 doelgroepen en genereerde 400 kansen voor Swiss Sports Tech Provider *
    Conversiepercentage van Oekraïens IT-bedrijf verhoogd met 53,6% *
    Het aantal jaarlijks verworven klanten van de Amerikaanse Software Development Company is toegenomen door 400% *
    Meer dan 50 zakelijke kansen gegenereerd voor Britse architectuur- en ontwerpdienstenaanbieder *
    Kosten per lead ruim zes keer verlaagd voor Dutch Event Technology Company *
    Bereikte 13.000 doelgroepen en genereerde 400 kansen voor Swiss Sports Tech Provider *
    Conversiepercentage van Oekraïens IT-bedrijf verhoogd met 53,6% *
    Het aantal jaarlijks verworven klanten van de Amerikaanse Software Development Company is toegenomen door 400% *
    Meer dan 50 zakelijke kansen gegenereerd voor Britse architectuur- en ontwerpdienstenaanbieder *
    Kosten per lead ruim zes keer verlaagd voor Dutch Event Technology Company *
    Bereikte 13.000 doelgroepen en genereerde 400 kansen voor Swiss Sports Tech Provider *
    Conversiepercentage van Oekraïens IT-bedrijf verhoogd met 53,6% *
    Het aantal jaarlijks verworven klanten van de Amerikaanse Software Development Company is toegenomen door 400% *
    Meer dan 50 zakelijke kansen gegenereerd voor Britse architectuur- en ontwerpdienstenaanbieder *
    Kosten per lead ruim zes keer verlaagd voor Dutch Event Technology Company *
    Bereikte 13.000 doelgroepen en genereerde 400 kansen voor Swiss Sports Tech Provider *
    Conversiepercentage van Oekraïens IT-bedrijf verhoogd met 53,6% *
    Het aantal jaarlijks verworven klanten van de Amerikaanse Software Development Company is toegenomen door 400% *
    Meer dan 50 zakelijke kansen gegenereerd voor Britse architectuur- en ontwerpdienstenaanbieder *
    Kosten per lead ruim zes keer verlaagd voor Dutch Event Technology Company *
    Bereikte 13.000 doelgroepen en genereerde 400 kansen voor Swiss Sports Tech Provider *
    Conversiepercentage van Oekraïens IT-bedrijf verhoogd met 53,6% *
    Het aantal jaarlijks verworven klanten van de Amerikaanse Software Development Company is toegenomen door 400% *
    Meer dan 50 zakelijke kansen gegenereerd voor Britse architectuur- en ontwerpdienstenaanbieder *
    Kosten per lead ruim zes keer verlaagd voor Dutch Event Technology Company *
    Bereikte 13.000 doelgroepen en genereerde 400 kansen voor Swiss Sports Tech Provider *
    Conversiepercentage van Oekraïens IT-bedrijf verhoogd met 53,6% *
    AI Samenvatting
    Sergii Steshenko
    CEO & Co-Founder @ Lengreo

      Accounting firms need IT partners that can keep financial systems available, protect sensitive client data, support remote work, and handle technology issues without disrupting tax and reporting deadlines. This list includes both full-service MSPs built specifically for CPA firms and engineering-led providers suited to accounting businesses with custom applications, cloud infrastructure, integrations, or digital platforms.

      1. LenGreo

      1. LenGreo

      Lengreo services cover IT consulting, technical project planning, website and application development, system audits, infrastructure support, ongoing maintenance, and technical operations. This can suit accounting firms whose technology needs extend beyond employee devices into websites, lead-generation systems, digital workflows, and custom business applications.

      The company also combines technical execution with digital marketing services, which can reduce the number of vendors involved when an accounting practice is upgrading both its digital infrastructure and client acquisition systems.

      Key Facts

      • Core services: Managed IT services for accounting firms, IT consulting, web and application development, infrastructure support, system audits, ongoing technical support
      • Best for: Accounting firms combining technical operations with digital growth work
      • Specialization: Digital infrastructure and marketing technology
      • Service model: Project-based and ongoing outsourced technical support

      Contactgegevens

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      2. Tech Advisors

      2. Tech Advisors

      Tech Advisors focuses directly on CPA and accounting firms. The company was founded by former practicing CPAs and has built its managed IT model around accounting software, tax-season workloads, cybersecurity, and regulatory requirements. Its support covers systems such as CCH Axcess, Thomson Reuters, Lacerte, Drake, Sage, QuickBooks, Karbon, and TaxDome.

      Managed IT plans include monitoring, helpdesk support, cybersecurity, compliance management, strategic reviews, cloud services, backup, and networking. Weekend and after-hours tax-season coverage is particularly relevant to firms where a technical failure during filing season can immediately affect billable work.

      Key Facts

      • Best for: CPA firms wanting an accounting-specific MSP
      • Core services: Managed IT, helpdesk, cybersecurity, cloud services, backup, networking, compliance support
      • Specialization: CPA technology and tax-season operations
      • Accounting software: CCH, Thomson Reuters, Lacerte, Drake, Sage, QuickBooks, Karbon, TaxDome
      • Location: Massachusetts-based with additional US operations

      Contactgegevens

      • Website: tech-adv.com
      • E-mail: [email protected]
      • Facebook: www.facebook.com/techadvinc
      • Twitter: x.com/techadvisorsinc
      • LinkedIn: www.linkedin.com/company/tech-advisors-inc
      • Instagram: www.instagram.com/techadvisorsit
      • Adres: 75 State St, Suite 100, Boston, MA 02109
      • Telefoon: (508) 356-5565

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        3. OSKI Solutions

        3. OSKI Solutions

        OSKI Solutions provides engineering-led managed IT services centered on applications, cloud environments, databases, integrations, and CI/CD infrastructure. Its service includes proactive monitoring, alerting, incident response, patching, backup verification, security maintenance, and day-to-day AWS or Azure operations under defined service agreements.

        For accounting firms, OSKI is more relevant when critical operations depend on custom portals, internal applications, cloud-hosted workflows, databases, or system integrations. 

        Key Facts

        • Best for: Accounting firms operating custom applications and cloud infrastructure
        • Core services: Application management, cloud operations, monitoring, incident response, patching, database and integration support
        • Cloud platforms: AWS, Azure
        • Technologies: .NET, Node.js, SQL Server, Docker, Kubernetes, Terraform
        • Service model: Ongoing managed engineering under an SLA

        Contactgegevens

        • Website: oski.site
        • E-mail: [email protected] 
        • LinkedIn: www.linkedin.com/company/oski-solutions
        • Telefoon: +48571282759
        • Address: Kaupmehe tn 7-120, Tallinn, 10114, Estonia
        4. Andersen

        4. Andersen

        Andersen has a dedicated managed IT offering for accounting and CPA firms rather than simply adapting a generic technology package. Its accounting services cover 24/7 help desk support, managed cybersecurity, accounting and tax software support, cloud environments, backup and disaster recovery, network infrastructure, and IT strategy.

        The company also supports co-managed arrangements for firms that already employ internal IT staff. Its accounting practice emphasizes availability during filing periods, security of financial data, and documented processes for regulated environments. This makes Andersen relevant to firms needing a broad managed technology scope rather than application development alone.

        Key Facts

        • Best for: Accounting firms requiring broad 24/7 managed IT coverage
        • Core services: Helpdesk, cybersecurity, cloud, backup, infrastructure management, IT strategy
        • Service model: Fully managed and co-managed IT
        • Support coverage: 24/7
        • Specialization: Regulated and financial-sector IT environments

        Contactgegevens

        • Website: andersenlab.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/AndersenSoftwareDev
        • Twitter: x.com/AndersenLabs
        • LinkedIn: www.linkedin.com/company/andersen-softwaredev
        • Instagram: www.instagram.com/andersen.global
        • Adres: 1 St Katharine's Way, 6e verdieping, Londen E1W 1YL, Verenigd Koninkrijk 
        • Telefoon: +44 207 048 6755 
        5. A-listware

        5. A-listware

        A-listware provides managed services across devices, operating systems, applications, data, cloud environments, and security. Its managed IT practice includes infrastructure assessment, user and software administration, server and cloud management, monitoring, Level 1 through Level 3 support, application support, and managed security.

        The company supports fully managed and co-managed arrangements, so an accounting business can outsource its broader technology environment or add coverage around an existing internal team. A-listware is especially relevant where the IT estate combines business applications, cloud resources, employee systems, and custom software that require different technical skill sets.

        Key Facts

        • Best for: Firms needing infrastructure, application, and cloud support under one provider
        • Core services: Managed IT, helpdesk, cloud management, application support, infrastructure management, cybersecurity
        • Support levels: L1, L2, L3
        • Service model: Fully managed and co-managed IT
        • Infrastructure: Cloud, on-premises, and hybrid environments

        Contactgegevens

        • Website: a-listware.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/alistware
        • LinkedIn: www.linkedin.com/company/a-listware
        • Adres: North Bergen, NJ 07047, VS 
        • Telefoon: +1 (888) 337 93 73
        6. Core Managed

        6. Core Managed

        Core Managed has a dedicated managed IT service for accounting firms. Its approach combines daily help desk support with longer-term technology planning through a vCIO team that conducts recurring reviews of risks, vulnerabilities, hardware, and future IT needs.

        Accounting software support is another relevant part of the offering. The company’s published list includes Thomson Reuters products, UltraTax, Sage, Intuit, CCH products, Wolters Kluwer, QuickBooks, Lacerte, TaxACT, TaxSlayer Pro, Great Plains, Microsoft 365, SharePoint, OneDrive, and Teams. This makes it particularly suited to firms that want their MSP to understand the applications used in everyday accounting work.

        Key Facts

        • Best for: Accounting firms seeking helpdesk support plus strategic IT planning
        • Core services: Managed IT, helpdesk, cybersecurity, vCIO planning, cloud support
        • Accounting software: Thomson Reuters, UltraTax, Sage, CCH, QuickBooks, Lacerte and others
        • Notable strength: Published accounting-firm service and client experience

        Contactgegevens

        • Website: coremanaged.com
        • Facebook: www.facebook.com/coremanaged
        • Twitter: x.com/core_managed
        • LinkedIn: www.linkedin.com/company/core-managed
        • Address: 1530 American Way, Suite 130, Greenwood, IN 46143 
        • Phone: 317-497-5500
        7. Itexus

        7. Itexus

        Itexus concentrates on financial software, making it a more specialized option for accounting businesses that operate proprietary financial applications, client platforms, or other custom systems. Its support and maintenance practice covers ongoing L2 and L3 support, proactive monitoring, incident response, patch and release management, performance tuning, backups, rollback procedures, and production improvements.

        Itexus also handles DevOps and cloud engineering for financial environments, including CI/CD pipelines, observability, disaster recovery, and Kubernetes-based infrastructure. 

        Key Facts

        • Best for: Accounting and financial businesses with custom production software
        • Core services: L2/L3 support, monitoring, incident response, DevOps, cloud engineering, maintenance
        • Specialization: Financial and fintech software
        • Infrastructure capabilities: CI/CD, Kubernetes, observability, backup and disaster recovery

        Contactgegevens

        • Website: itexus.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/itexus
        • Twitter: x.com/ItexusSoft
        • LinkedIn: www.linkedin.com/company/itexus-fintech-software
        • Instagram: www.instagram.com/itexus.soft
        • Address: Zurawia 6/12/lok 766, 00-503, Warszawa, Poland
        8. Tabush Group

        8. Tabush Group

        Tabush Group provides managed and co-managed IT specifically for professional services firms, including accounting and CPA practices. Its accounting offering covers daily IT support, cloud desktops, cybersecurity, infrastructure management, strategic guidance, and support for common tax and accounting applications.

        The company lists Drake, Lacerte, UltraTax CS, CCH ProSystem fx, QuickBooks, Sage, and other practice-management tools among supported applications. Its Edge service can extend an existing internal IT department with monitoring, patching, security, and after-hours coverage, while Boxtop provides a private-cloud desktop environment.

        Key Facts

        • Best for: Accounting firms choosing between fully managed and co-managed IT
        • Core services: Helpdesk, managed IT, cloud desktops, cybersecurity, monitoring, strategic IT support
        • Accounting software: Drake, Lacerte, UltraTax CS, CCH ProSystem fx, QuickBooks, Sage
        • Locations: New York and Massachusetts
        • Service options: Managed IT, co-managed IT, private-cloud desktop services

        Contactgegevens

        • Website: www.tabush.com
        • E-mail: [email protected] 
        • LinkedIn: www.linkedin.com/company/107377
        • Address: 148 W 37th St, 6th Floor, New York, NY 10018
        • Phone: 212-252-0571
        9. SoftPro

        9. SoftPro

        SoftPro develops custom software and cloud systems and provides continuous support and maintenance for software it builds. It also provides long-term application support and managed cloud infrastructure work.

        For an accounting firm, this model makes the most sense when the technology requirement involves an internal business portal, custom workflow system, Microsoft-based application, cloud migration, or another tailored platform that needs ongoing engineering after deployment. Firms seeking complete desktop, endpoint, and employee help desk management should compare SoftPro with traditional MSPs separately.

        Key Facts

        • Best for: Accounting firms maintaining custom business applications
        • Core services: Custom software, cloud development, application maintenance, cloud infrastructure support
        • Specialization: Microsoft-oriented software and cloud delivery
        • Service model: Development followed by continuous support and maintenance
        • Location: Warsaw, Poland

        Contactgegevens

        • Website: soft-pro.pl
        • Adres: Polen, Warschau, provincie Mazovië, Erasmus Ciołka-straat 13, 401
        10. NMGI

        10. NMGI

        NMGI has an explicit managed IT practice for CPA firms and serves accounting businesses nationwide from its headquarters in Hutchinson, Kansas. Its accounting offering covers proactive monitoring, maintenance, technical support, cybersecurity, cloud hosting, backup, disaster recovery, infrastructure, and technology consulting.

        The company serves practices that need one provider to manage system reliability and security around sensitive financial information. NMGI also emphasizes the seasonal demands of tax, audit, advisory, and client-reporting work, rather than treating an accounting office like a generic small business environment.

        Key Facts

        • Best for: US CPA firms wanting an accounting-focused managed IT provider
        • Core services: Managed IT, cybersecurity, cloud hosting, backup, disaster recovery, consulting
        • Service area: CPA firms nationwide
        • Headquarters: Hutchinson, Kansas
        • Specialization: Accounting and CPA technology environments

        Contactgegevens

        • Website: www.nmgi.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/NMGI.KS
        • LinkedIn: www.linkedin.com/company/network-management-group-inc.
        • Adres: 734 E Fourth Ave, Hutchinson, KS 67501
        • Telefoon: 620-664-6000
        11. Mobian

        11. Mobian

        Mobian offers ongoing software and infrastructure support. Its capabilities include cloud infrastructure management, database maintenance, DevOps and automation, system integration, cybersecurity consulting, and dedicated support and maintenance teams.

        The company also provides continuous post-launch support with flexible maintenance packages. For accounting firms, this can fit scenarios involving client portals, workflow applications, internal platforms, databases, or cloud-based systems that need ongoing engineering. 

        Key Facts

        • Best for: Accounting firms needing ongoing support for custom software and cloud systems
        • Core services: Cloud infrastructure management, DevOps, database maintenance, system integration, software support
        • Service model: Team augmentation and ongoing maintenance
        • Location: Tallinn, Estonia

        Contactgegevens

        • Website: mobian.studio
        • E-mail: [email protected]
        • LinkedIn: www.linkedin.com/company/mobian-studio
        • Adres: Harju maakond, Tallinn, stadsdeel Kesklinna, Masina tn 22, 10113
        12. net-devs

        12. net-devs

        net-devs provides enterprise software engineering, cloud architecture, and platform engineering services that can support accounting firms with complex internal systems, integrations, and cloud-based applications. The company works across Azure, AWS, and Google Cloud environments and provides infrastructure-as-code, Kubernetes, Terraform, CI/CD, and enterprise application modernization capabilities.

        For accounting firms, net-devs is more relevant when managed IT needs involve custom financial workflows, internal platforms, legacy system modernization, or cloud infrastructure. Its senior-led engineering approach can fit organizations that require ongoing technical ownership of production systems.

        Key Facts

        • Best for: Accounting firms with custom software, cloud platforms, or enterprise applications
        • Core services: Enterprise software development, cloud engineering, platform engineering, system modernization
        • Cloud platforms: Azure, AWS, Google Cloud
        • Technologies: .NET, JVM, Node.js, Python, Go, Kubernetes, Terraform
        • Location: Warsaw, Poland

        Contactgegevens

        • Website: net-devs.com
        • E-mail: [email protected]
        • LinkedIn: www.linkedin.com/company/net-devs
        • Adres: Obrzeżna 1D, 02-691 Warschau, Polen
        13. Gilzor

        13. Gilzor

        Gilzor provides ongoing development support for web and mobile products, including systems transferred from another development vendor. Its support services cover technical troubleshooting, product maintenance, performance work, security-related updates, bug fixing, and continuing feature development. The company also works with cloud and DevOps technologies such as AWS, Kubernetes, Docker, Ansible, and CI/CD tools.

        For accounting firms, Gilzor is most relevant when managed technology needs center on a custom client portal, workflow application, financial product, or internal automation system.

        Key Facts

        • Best for: Accounting firms with custom software requiring ongoing development support
        • Core services: Application maintenance, technical support, feature development, QA, DevOps
        • Specialization: Web and mobile software products
        • Locations: Warsaw, Poland and Limassol, Cyprus
        • Service model: Ongoing product support and maintenance

        Contactgegevens

        • Website: www.gilzor.com
        • E-mail: [email protected]
        • LinkedIn: www.linkedin.com/company/gilzor-softwaredevelopment
        • Adres: Polen, Warschau, Kantoor 58, Adama Mickiewicza-straat 37, 01-625
        14. predictiveIT

        14. predictiveIT

        predictiveIT has a dedicated managed IT service for accounting and CPA firms and states that its team has more than 19 years of experience working with the sector. Its service combines monitoring and support, data backup and recovery, IT consulting, cloud services, cybersecurity, Microsoft 365 management, business continuity, and compliance-focused technology work.

        The company is especially relevant to accounting practices in Florida that want managed infrastructure and security from the same provider. Its accounting service addresses tax-season availability, secure access to financial information, and support for businesses operating under heightened data-protection requirements.

        Key Facts

        • Best for: Accounting firms seeking managed IT with cybersecurity and compliance support
        • Core services: Managed IT, cloud, Microsoft 365, cybersecurity, backup, business continuity, consulting
        • Specialization: CPA and professional-services IT
        • Support: 24/7 monitoring and support
        • Location: Florida, USA

        Contactgegevens

        • Website: www.predictiveit.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/TeamPredictive
        • LinkedIn: www.linkedin.com/company/predictive-it
        • Address: 600 N Willow Ave 2nd floor, Tampa, FL 33606 
        • Phone: 813-514-8600
        15. 21century.tech

        15. 21century.tech

        21century.tech is a software development studio focused on AI-assisted engineering, application development, integrations, refactoring, testing, and production deployment. The company works with senior engineers who use AI-supported workflows while keeping human review over architecture, security decisions, and final delivery.

        For accounting firms, 21century.tech is a better match for technology environments that require custom applications, automation tools, internal platforms, or modernization of existing software. It can support accounting businesses that rely on software-driven operations.

        Key Facts

        • Best for: Accounting firms building or modernizing custom software systems
        • Core services: Full-stack development, MVP development, integrations, refactoring, testing, deployment
        • Specialization: AI-assisted software engineering and application delivery
        • Delivery model: Remote-first engineering teams
        • Location: Miami, USA

        Contactgegevens

        • Website: 21century.tech

        Choosing managed IT services for an accounting firm depends on the company’s technology environment, security requirements, and level of internal IT expertise. Firms that mainly need help desk support, cybersecurity, backups, and accounting software assistance may prefer providers with direct CPA experience, while organizations running custom platforms or complex cloud systems may need a partner with stronger development and infrastructure capabilities.

        Providers such as Lengreo, Tech Advisors, Andersen, Core Managed, and Tabush Group focus on accounting-specific IT challenges, while companies like OSKI Solutions, Itexus, A-listware, Mobian, SoftPro, and Gilzor are better suited for firms that need application support, cloud operations, integrations, or custom technology management.

        Before selecting a provider, accounting firms should compare service coverage, response processes, security practices, supported applications, and experience with financial data environments. A suitable managed IT partner should help maintain reliable systems while allowing accounting teams to focus on client work, reporting, and business operations.

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