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15 Best IT Support Companies for Accounting Firms (2026)

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    Targets we’ve achieved:
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    AI Summary
    Max Mykal
    Co-Founder @ Lengreo

      Accounting firms depend on a mix of tax software, financial systems, client portals, document platforms, cloud tools, and secure remote access. IT support in this sector often has to cover both everyday user issues and the systems that store or process sensitive financial data. Cybersecurity, backup and recovery, application availability, compliance controls, and tax-season reliability are common decision factors. Firms with custom software or complex integrations may also need engineering support beyond a conventional help desk.

      1. LenGreo

      1. LenGreo

      Lengreo combines web development with B2B digital services, giving accounting firms access to technical teams for custom web applications, APIs, cloud-native systems, QA, DevOps, and post-launch support. Its development process covers discovery, prototyping, frontend and backend work, testing, deployment, migration, and later refinement. This is most relevant when an accounting business relies on a client portal, internal workflow tool, integration layer, or other custom digital platform that needs continued technical attention.

      The team includes business analysts, product designers, project managers, QA engineers, DevOps specialists, and full-stack developers, so application support can stay connected to product and infrastructure work rather than being treated as isolated troubleshooting.

      Key Facts

      • Best for: Accounting firms with custom web applications, portals, or digital workflows
      • Core services: IT support, custom web development, web applications, APIs, QA, DevOps, post-launch support
      • Development capabilities: Frontend, backend, cloud-native systems, hybrid applications
      • Locations: Amsterdam, Netherlands and Kyiv, Ukraine

      Contact Information

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      Creator Subscription Platform
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      B2B Directory Platform
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      CUSTOM LOGISTICS PLATFORM
      2. Rightworks

      2. Rightworks

      Rightworks provides managed IT and cloud services built specifically around accounting and tax firms. Its offering combines accounting application access, cybersecurity, network management, endpoint protection, Microsoft 365, backups, identity controls, patching, and technical support. The environment supports software from vendors such as Thomson Reuters and CCH, which is useful for firms that want their IT provider to understand the applications used during daily accounting and tax work.

      Rightworks also covers onboarding and offboarding, role-based permissions, secure remote access, cloud backups, and 24/7 firm-focused support. The model is designed for practices that prefer one provider to manage both cloud access and day-to-day IT operations.

      Key Facts

      • Best for: Accounting and tax firms seeking a unified managed cloud environment
      • Core services: Managed IT, accounting application hosting, cybersecurity, Microsoft 365, backups
      • Industry specialization: Accounting and tax
      • Support: 24/7 firm-focused technical support

      Contact Information

      • Website: www.rightworks.com
      • Email: [email protected]
      • LinkedIn: www.linkedin.com/company/rightworks
      • Facebook: www.facebook.com/RightworksLLC
      • Twitter: x.com/Rightworks_
      • Instagram: www.instagram.com/rightworks_
      • Address: 300 Innovative Way, Suite 2340, Nashua, NH 03062 
      • Phone: 866.899.1820

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        3. OSKI Solutions

        3. OSKI Solutions

        OSKI Solutions delivers managed IT services through an engineering-led model that covers applications, cloud infrastructure, databases, APIs, integrations, and CI/CD environments. Its support scope includes proactive monitoring, incident response, security patching, backup verification, AWS and Azure operations, database support, disaster recovery, and continuous technical maintenance.

        For accounting firms with custom platforms or interconnected systems, this approach can keep software maintenance, cloud operations, modernization, and DevOps work under the same technical team. OSKI can also support systems it did not originally build, which is useful when a firm inherits legacy applications or needs ongoing ownership after a previous vendor exits.

        Key Facts

        • Best for: Firms with custom applications, integrations, databases, and cloud infrastructure
        • Core services: Managed IT, cloud operations, monitoring, incident response, maintenance, integrations
        • Cloud platforms: AWS and Microsoft Azure
        • Additional capabilities: Software development, DevOps, cybersecurity, modernization

        Contact Information

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

        4. Cetrom

        Cetrom focuses on managed IT and cloud hosting for accounting and tax firms. Its environments support applications from CCH, Thomson Reuters, Lacerte Tax, Intuit, CaseWare, Sage, Drake, SurePrep, and other vendors, reducing the gap between general IT support and the software stack used inside CPA practices.

        Services include secure application hosting, cloud desktops, infrastructure management, data security, disaster recovery, and ongoing technical administration. Cetrom provides 24/7/365 support and emphasizes accounting-focused engineering during busy periods such as tax season. The company is a practical fit for firms that want industry software, security, remote access, and infrastructure managed together.

        Key Facts

        • Best for: CPA firms with extensive accounting and tax application requirements
        • Core services: Managed IT, cloud hosting, application hosting, cybersecurity, disaster recovery
        • Accounting applications: CCH, Thomson Reuters, Lacerte, Intuit, CaseWare, Sage, Drake, SurePrep
        • Industry focus: Accounting and tax firms

        Contact Information

        • Website: www.cetrom.net
        • Email: [email protected]
        • Facebook: www.facebook.com/CetromIT
        • Twitter: x.com/cetrom
        • LinkedIn: www.linkedin.com/company/cetrom-information-technology-inc-
        • Address: 5457 Twin Knolls Road, Suite 300 1028, Columbia, MD 21045
        • Phone: (866) 556-4357
        5. Itexus

        5. Itexus

        Itexus develops and supports software for financial institutions and fintech companies, with capabilities spanning custom software, cloud and DevOps engineering, cybersecurity, QA automation, integrations, and long-term maintenance. Its production support work includes proactive monitoring, incident response, patch and release management, performance tuning, backups, rollback procedures, and L2/L3 technical support.

        This makes Itexus relevant to accounting organizations whose IT needs center on custom financial applications, data flows, cloud environments, or integrations rather than only employee devices. Its cloud stack includes AWS, Microsoft Azure, Google Cloud, Docker, Kubernetes, Terraform, CI/CD tooling, observability, and disaster recovery infrastructure.

        Key Facts

        • Best for: Financial software, cloud environments, integrations, and production support
        • Core services: Fintech development, DevOps, cloud engineering, cybersecurity, maintenance
        • Cloud platforms: AWS, Microsoft Azure, Google Cloud
        • Support capabilities: L2/L3 software support and monitoring

        Contact Information

        • Website: itexus.com
        • Email: [email protected]
        • Facebook: www.facebook.com/itexus
        • Twitter: x.com/ItexusSoft
        • LinkedIn: www.linkedin.com/company/itexus
        • Instagram: www.instagram.com/itexus.soft
        • Address: Żurawia 6/12/lok 766, 00-503 Warszawa, Poland
        6. Verito

        6. Verito

        Verito provides cloud hosting and managed IT services for tax and accounting firms. Its services cover dedicated private cloud environments, endpoint management, patching, device security, backups, email and cloud application protection, compliance assistance, and 24/7 technical support.

        The company hosts QuickBooks, Drake, Lacerte, UltraTax, ProSeries, CCH Axcess, Sage, and other accounting and tax applications. Verito also offers plans that combine hosted software with management of local devices, which can simplify support for firms operating in hybrid environments. Its accounting-specific focus is especially useful for practices that want application hosting, endpoint support, and security handled by the same provider.

        Key Facts

        • Best for: Accounting and tax firms combining application hosting with managed IT
        • Core services: Managed IT, private cloud hosting, endpoint security, backups, compliance support
        • Accounting applications: QuickBooks, Drake, Lacerte, UltraTax, ProSeries, CCH Axcess, Sage
        • Hosting model: Dedicated private cloud servers

        Contact Information

        • Website: verito.com
        • Email: [email protected]
        • Address: 3524 Silverside Road, Suite 35B, Wilmington, Delaware 19810
        • Phone: 1-855-583-7486
        7. A-listware

        7. A-listware

        A-listware provides structured IT support across user assistance, infrastructure, applications, cloud resources, and cybersecurity. Its service model includes Level 1 support for routine requests, Level 2 troubleshooting, and Level 3 engineering support for more complex systems and integrations. Infrastructure work covers servers, cloud environments, monitoring, vulnerability assessment, software updates, and user management.

        For accounting firms with a mix of office IT and custom business systems, that multi-level support model can connect help desk work with deeper engineering. A-listware also works on ERP and CRM systems, cloud applications, legacy modernization, data solutions, DevOps, and ongoing application support under SLA-based delivery models.

        Key Facts

        • Best for: Firms needing multi-level technical and infrastructure support
        • Core services: IT support, help desk, infrastructure management, cloud, security, application support
        • Support levels: Level 1, Level 2, and Level 3
        • Additional capabilities: ERP, CRM, data, DevOps, software engineering

        Contact Information

        • Website: a-listware.com
        • Email: [email protected]
        • Facebook: www.facebook.com/alistware
        • LinkedIn: www.linkedin.com/company/a-listware
        • Address: St. Leonards-On-Sea, TN37 7TA, UK
        • Phone: +44 (0)142 439 01 40

         

        8. Andersen

        8. Andersen

        Andersen provides managed IT services specifically for accounting firms, including 24/7 help desk support, cybersecurity, cloud infrastructure, backups, disaster recovery, accounting software support, and strategic IT management. Its service model covers end-user support, managed security, threat monitoring, cloud hosting, and seasonal capacity needs.

        The company also offers co-managed arrangements for organizations that already have internal IT staff but need broader coverage or specialist skills. That flexibility can suit larger accounting businesses that want to retain internal ownership while outsourcing defined operational areas. Andersen can combine managed services with broader software engineering and technology consulting when custom systems are part of the environment.

        Key Facts

        • Best for: Accounting firms requiring broad managed IT coverage
        • Core services: Help desk, cybersecurity, cloud, backups, disaster recovery, IT strategy
        • Service model: Fully managed and co-managed IT
        • Support availability: 24/7

        Contact Information

        • Website: andersenlab.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/AndersenSoftwareDev
        • Twitter: x.com/AndersenLabs
        • LinkedIn: www.linkedin.com/company/andersen-softwaredev
        • Address: 3 Rosa-Bavarese St., Munich, 80639, Germany
        • Phone: +49 22 198 253 169
        9. net-devs

        9. net-devs

        net-devs focuses on senior-led enterprise software engineering across cloud, backend, frontend, and platform environments. Its capabilities include cloud-native architecture, infrastructure as code, deployment, QA, application evolution, and ongoing iteration across Microsoft Azure, AWS, and Google Cloud.

        For accounting organizations, the clearest use case is support for custom financial platforms, internal applications, system modernization, cloud architecture, or integration work that requires engineering ownership. The technology stack includes .NET, JVM technologies, Node.js, Python, Go, React, Angular, Vue, TypeScript, Terraform, and Kubernetes, allowing the team to work across both application and infrastructure layers.

        Key Facts

        • Best for: Accounting firms maintaining custom enterprise software
        • Core services: Enterprise development, cloud engineering, modernization, AI engineering, dedicated teams
        • Cloud platforms: Microsoft Azure, AWS, Google Cloud
        • Technologies: .NET, JVM, Node.js, Python, Go, Terraform, Kubernetes

        Contact Information

        • Website: net-devs.com
        • Email: [email protected]
        • LinkedIn: www.linkedin.com/company/net-devs
        • Address: Obrzeżna 1D, 02-691 Warszawa, Poland
        10. SoftPro

        10. SoftPro

        SoftPro combines custom software development with cloud engineering, modernization, and long-term application support. Its technical work includes .NET, ASP.NET Core, C#, React, Node.js, Microsoft Azure, AWS, and enterprise web applications. Cloud services cover cloud-native development, migration, infrastructure management, storage, security, and modernization.

        The strongest accounting use case is ongoing support for internal portals, custom CRM or workflow systems, Azure-hosted applications, integrations, or legacy software that needs continued maintenance after deployment. SoftPro’s broader development capability also lets application fixes, cloud changes, and modernization work remain connected instead of being split among unrelated vendors.

        Key Facts

        • Best for: Firms using custom Microsoft and Azure-based applications
        • Core services: Software development, cloud engineering, modernization, maintenance
        • Technologies: .NET, ASP.NET Core, C#, React, Node.js, Azure, AWS
        • Location: Warsaw, Poland

        Contact Information

        • Website: soft-pro.pl
        • Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciolka St. 401
        11. Nerds Support

        11. Nerds Support

        Nerds Support provides managed IT, cloud hosting, cybersecurity, compliance services, and WISP support for accounting firms. Its managed environment includes 24/7 technical support, secure cloud access, multi-factor authentication, endpoint validation, business continuity, disaster recovery, web filtering, and audit tracking.

        The company supports accounting applications including Lacerte, Thomson Reuters products, QuickBooks, CCH, and Sage. Its focus on accounting and financial firms makes the service relevant where IT support needs to address both daily user issues and protection of regulated financial information. Cloud hosting, security controls, and help desk coverage can be managed within the same relationship.

        Key Facts

        • Best for: Accounting firms combining managed IT, cloud hosting, and compliance services
        • Core services: Managed IT, cloud, cybersecurity, compliance, disaster recovery
        • Accounting applications: QuickBooks, Lacerte, CCH, Thomson Reuters, Sage
        • Location: Miami, Florida

        Contact Information

        • Website: nerdssupport.com
        • Email: [email protected]
        • Facebook: www.facebook.com/nerdssupport
        • Twitter: x.com/nerdssupport
        • LinkedIn: www.linkedin.com/in/nssrichman
        • Instagram: www.instagram.com/nerdssupport
        • Address: 4155 SW 130 Ave., Suite 103, Miami, FL 33175
        • Phone: 305-551-2009
        12. Mobian Studio

        12. Mobian Studio

        Mobian Studio provides software product development, mobile and web application development, system architecture, platform engineering, team augmentation, modernization, and ongoing technical support. Its delivery models cover individual specialists, integrated engineering teams, and end-to-end product development.

        The studio works across finance, healthcare, telecom, logistics, public services, and other sectors. For accounting firms, its role is most relevant when business-critical web or mobile products, internal platforms, integrations, or legacy systems need continued engineering after launch. Services also include scaling existing products, continuous optimization, maintenance, and technical support, which can extend the life of custom software as requirements change.

        Key Facts

        • Best for: Web and mobile products, modernization, and long-term technical support
        • Core services: Software development, mobile apps, web apps, platform engineering, maintenance
        • Delivery models: Team augmentation and end-to-end development
        • Headquarters: Tallinn, Estonia

        Contact Information

        • Website: mobian.studio
        • Email: [email protected]
        • LinkedIn: www.linkedin.com/company/mobian-studio
        • Address: Masina tn 22, Kesklinna linnaosa, Tallinn 10113, Estonia
        13. Network Computer Pros

        13. Network Computer Pros

        Network Computer Pros provides managed IT and cybersecurity services for accounting and CPA firms in South Florida and Middle Tennessee. Its services cover proactive monitoring, technical support, backups, system patching, cloud services, cybersecurity, secure remote access, vendor coordination, and technology planning.

        The company also manages workstation and network environments, access controls, backup validation, and security programs for firms handling financial information. Support is available remotely, with local onsite service through offices in Davie, Florida, and Brentwood, Tennessee. This regional model is useful for firms that want both remote help desk coverage and the option of onsite assistance.

        Key Facts

        • Best for: CPA firms in South Florida and Middle Tennessee
        • Core services: Managed IT, cybersecurity, backups, cloud support, IT planning
        • Service model: Remote and onsite support
        • Locations: Davie, Florida and Brentwood, Tennessee

        Contact Information

        • Website: www.networkcomputerpros.com
        • Address: 5240 S University Drive, Suite 103, Davie, FL 33328
        • Phone: (954) 880-0388
        14. 21century.tech

        14. 21century.tech

        21century.tech is an AI-assisted software engineering studio providing product development, full-stack feature delivery, third-party integrations, legacy refactoring, automated testing, documentation, CI/CD, and production deployment. Senior engineers retain responsibility for architecture, business logic, code review, QA, security decisions, and final delivery.

        For accounting firms, the strongest fit is custom software and integration work rather than routine desktop help desk support. Internal financial systems, client-facing applications, workflow tools, and legacy platforms can all require ongoing engineering as APIs, infrastructure, and business requirements change. The company operates remotely and can deploy to client-owned or managed environments.

        Key Facts

        • Best for: Custom software development, integrations, and legacy modernization
        • Core services: Full-stack development, integrations, refactoring, testing, CI/CD, deployment
        • Delivery model: Senior engineers with AI-assisted development
        • Location: Miami, remote-first

        Contact Information

        15. Gilzor

        15. Gilzor

        Gilzor provides ongoing development support for web and mobile products, including software that has already launched or moved from another provider. Its support work covers maintenance, bug fixing, performance improvements, feature development, QA, technical troubleshooting, deployment, and continued modernization.

        For accounting firms, the clearest fit is with practices that rely on custom client portals, workflow applications, internal automation tools, integrations, or other software requiring engineering-level support. Gilzor also works with cloud infrastructure technologies, APIs, databases, and DevOps tooling as part of broader product delivery and maintenance, which helps keep application changes connected to the underlying technical environment.

        Key Facts

        • Best for: Accounting firms with custom business applications and digital platforms
        • Core services: Application maintenance, technical troubleshooting, development support, QA, web development
        • Specialization: Ongoing engineering for existing software products
        • Industry experience: Includes fintech

        Contact Information

        • Website: www.gilzor.com
        • Email: [email protected]
        • LinkedIn: www.linkedin.com/company/gilzor-softwaredevelopment
        • Address: Poland, Warsaw, Office 58, street Adama Mickiewicza 37, 01-625

        Conclusion

        IT support for accounting firms often needs to cover much more than fixing laptops and resetting passwords. Tax software, cloud applications, client data, document systems, remote access, backups, and security controls all affect whether work can continue smoothly during busy periods. Some firms need a traditional managed service provider with help desk and endpoint coverage, while others also depend on custom software, integrations, or cloud infrastructure that require engineering support. The most important distinction is the scope of systems an external provider is expected to own and how that responsibility is handled during incidents, upgrades, and seasonal demand. Clear service levels, tested recovery processes, security practices, and familiarity with the firm’s actual software stack usually matter more than a long generic service catalog.

        AI Summary