The impending end of support for Windows 10 has been delayed for some users, giving accounting firms still on the operating system—a sizable minority—a little more time to make upgrades before it is officially obsolete.
Support for Microsoft Windows 10 had been previously scheduled to end on October 14, 2025, which crucially meant no more security updates or monitoring. This led users all over to prepare upgrades, which has, on certain older machines, necessitated new hardware as well; this is particularly the case if the user plans to make heavy use of AI, as the operating system is designed to work with special chips called neural processing units which are made for AI operations. While many have already made the switch, a significant portion of users—including many CPA firms—have not.
While the clock is still ticking, the hands are moving a little slower after Microsoft announced recently that they will be extending support for certain Windows 10 users by an extra year via a new Extended Security Updates program. Organizations wishing to take advantage of this program need to pay $61 per device and they will continue to receive security updates. This price then doubles every consecutive year for a maximum of three years. This security update-only subscription does not include new features, customer-requested non-security updates, design change requests or general tech support.
Guilherand-Granges, France – October 28, 2020. Notebook with Microsoft Windows 10 logo. Operating systems developed by Microsoft.
Simon Lehmann/PhotoGranary – stock.adobe.com
CPA firms have been making steady, but slow, progress over the years in upgrading. A December 2023 report from the CPA Firm Management Association said Windows 10 remained the most popular operating system, with 47% of accountants saying the vast majority of their work uses it.
Roman Kepczyk, director of firm technology with accounting-focused cloud services provider Rightworks—who was one of the report authors—said in a followup email that he would estimate that the number of Windows 10 PCs actively being used in accounting firms today is around 25%. However, he caveated by saying that he works mostly with large and mid-size firms, and so for smaller local firms the proportion is likely higher. Still, the recent announcement by Microsoft buys all firms some time.
“I think the big concern with Windows 10 is that Microsoft slated October 14, 2025, to discontinue support, with security updates being the primary concern. Microsoft has since backtracked and said they would provide security updates beyond that (no/small fee) so the security push to upgrade to Windows 11 is minimized as long as the Windows 10 user continues to get updates,” he said.
Whatever reprieve firms can get is likely favorable, as Randy Johnston, co-founder and principal at accounting tech consultancy K2, said a lot of the practices he has observed are “in trouble on this, and may be suffering from the misperception that being in the cloud eliminates the problem.” While he couldn’t name a precise figure for how many firms overall are using Windows 10 right now, he estimated “it is north of 40%.”
But even as people work to upgrade from Windows 10, more than half of all devices are already using Windows 11, representing about 52% of the market. However, both Kepczyk and Johnston cautioned against concentrating solely on joining them, as Windows 12 is currently in the pipeline. It would not do a firm well to go through all the trouble of migrating to Windows 11 and then immediately have to do it all over again for Windows 12.
But just as there is now more time to go from 10 to 11, there is probably also more time to go from 11 to 12. Microsoft recently announced that Windows 11 version 25H2 is now available to the Windows Insider community, in advance of broader availability planned for the second half of 2025. While it was anticipated that Windows 12 would be released later this year, perhaps in the fall or late summer, the recent announcement could indicate that Microsoft intends to develop Windows 11 a little bit longer. This in mind, Kepczyk recommended people wait a while before upgrading.
“With most work being done in the cloud, I am holding off recommending firms upgrade from Windows 10 to 11 as long as security is automatically updated. With Windows 12 being scheduled [soon], we believe it will be even more optimized for AI and the updated NPU hardware, so we anticipate recommending firms buy new PCs with Windows 12 starting May 2026 as long as no significant technical flaws have been identified,” he said.
Johnston, too, advised accountants on Windows 10 to think in terms of Windows 12 versus 11.
“Upgrades are needed, and NPU purchases would be wise. For many, this will require hardware purchases. I want them to buy enough to support Windows 12,” he said.
The accounting profession is undergoing a fundamental structural transition as enterprise finance departments shift from periodic month-end closes toward automated continuous accounting models. By integrating specialized machine learning algorithms directly into enterprise resource planning (ERP) platforms, chief accounting officers are transforming financial reporting from a retrospective exercise into a real-time operational asset.
The Shift from Periodic Close to Continuous Financial Reporting
Traditional accounting workflows heavily relied on manual data reconciliation, spreadsheet calculations, and multi-week closing cycles at the end of each fiscal period. In contrast, continuous accounting frameworks utilize automated software agents to process, validate, and post transactional data in real time as business activities occur.
Automated bank reconciliation tools cross-reference incoming bank feeds, invoice records, and purchase orders automatically. By resolving transactional variances instantly throughout the month, corporate accounting teams eliminate the traditional workload spikes associated with quarterly and annual closes.
Machine Learning in Audit Trails and Anomaly Detection
Advanced natural language processing (NLP) and machine learning tools are redefining internal audit and financial control environments. Automated systems analyze 100% of general ledger entries, identifying anomalous transactions, duplicate payments, and unauthorized journal entries in real time.
Rather than relying on random statistical sampling, corporate internal auditors can focus their attention on high-risk flags automatically surfaced by algorithmic monitoring platforms. This continuous risk assessment strengthens internal controls over financial reporting (ICFR) and significantly reduces fraud risk.
Evolving Roles for Accounting Professionals
As routine data entry and manual reconciliation tasks become fully automated, the skill set required for accounting professionals is shifting toward data analysis, system design, and strategic business advisory.
– Systems Governance: Accountants are increasingly responsible for monitoring algorithmic accuracy and managing data integration pipelines.
– Business Partnership: Finance professionals leverage real-time financial dashboards to advise operational leaders on margin management and working capital allocation.
– Regulatory Compliance Management: Accounting teams utilize automated platforms to ensure compliance with dynamic tax codes and international accounting standards.
Core Implementation Recommendations
1. Deploy Automated Reconciliation Tools: Integrate continuous transaction processing modules into existing enterprise ERP architectures.
2. Establish Algorithmic Governance Controls: Implement strict internal testing protocols to ensure automated accounting rules comply with GAAP/IFRS standards.
3. Reskill Accounting Teams: Invest in training finance staff on data analytics, workflow automation, and predictive financial modeling.
Corporate accounting departments face expanding reporting expectations as international sustainability disclosure standards achieve regulatory enforcement across major global jurisdictions. Chief Accounting Officers (CAOs) and corporate controllers are establishing rigorous internal accounting controls to treat Environmental, Social, and Governance (ESG) metrics with the same data precision, auditability, and governance as traditional financial statements.
Regulatory Harmonization Under Global Sustainability Frameworks
The implementation of standardized sustainability reporting frameworks—notably rules established by international sustainability accounting boards—has created unified expectations for public and large private enterprises. Corporations must report standardized metrics covering greenhouse gas emissions (Scope 1, 2, and material Scope 3), energy utilization, workforce demographics, and supply chain governance.
In Europe and other participating international jurisdictions, double materiality principles are mandatory. Under double materiality, organizations must report both how external sustainability risks impact corporate financial performance, and how internal corporate operations affect surrounding environmental and social structures.
Integrating Sustainability Metrics into Core ERP Systems
To provide auditable non-financial data, enterprise organizations are integrating specialized carbon accounting and ESG management platforms directly into core ERP systems. Automated data collectors capture energy utility invoices, logistics fuel consumption metrics, and vendor compliance records in real time.
Establishing automated, traceable data pipelines ensures that non-financial reporting is supported by clear audit trails. This structured approach allows external financial auditors to provide reasonable assurance on sustainability disclosures during annual corporate reporting cycles.
Financial Impacts and Capital Market Disclosure
Accurate ESG reporting directly influences corporate cost of capital and institutional credit ratings. Commercial lenders and institutional asset managers systematically incorporate sustainability metrics into risk pricing models. Companies that demonstrate transparent, verifiable progress in operational energy efficiency and climate risk mitigation benefit from expanded access to green bond markets and lower debt pricing.
Action Steps for Accounting Leadership
1. Implement Double Materiality Frameworks: Conduct comprehensive assessments to identify material financial and operational sustainability metrics.
2. Build Auditable Non-Financial Data Pipelines: Automate ESG data collection within core accounting software to ensure data integrity.
3. Align Sustainability with Annual Financial Filings: Prepare non-financial disclosures concurrently with financial statements to satisfy regulatory audit expectations.
Internal audit departments and corporate risk managers are modernizing internal control frameworks by shifting from periodic sampling techniques to continuous monitoring and machine learning analytics. As operational data volumes increase across enterprise organizations, automated control testing ensures financial integrity, prevents corporate fraud, and streamlines annual audit engagements.
The Limitation of Periodic Audit Sampling
Historically, internal and external auditors evaluated internal controls by reviewing random samples of financial transactions—often analyzing less than five percent of total ledger entries. In complex enterprise environments, periodic sampling methods carry inherent risks of overlooking localized financial misstatements, unauthorized disbursements, or operational control breakdowns.
In 2026, progressive internal audit functions are utilizing automated continuous monitoring platforms that evaluate one hundred percent of financial transactions in real time. Continuous control auditing systems continuously monitor general ledger entries, procurement approvals, and expense reimbursements across all operating subsidiaries.
AI-Powered Fraud Detection and Anomaly Identification
Machine learning models trained on historical corporate financial data excel at identifying subtle transactional anomalies that indicate potential fraud or operational error. Automated systems instantly flag duplicate invoice payments, unapproved vendor creation, unusual journal entry timing, and unauthorized override of authority thresholds.
When an anomaly is detected, the automated auditing platform generates an instant risk alert, allowing internal audit teams to investigate root causes immediately. Early detection prevents minor operational errors from escalating into material weaknesses in financial reporting.
Streamlining External Audit Preparation
Continuous internal control monitoring delivers significant benefits during annual external financial audits. External audit firms can review continuous audit logs and automated control testing documentation, reducing the time required for manual field testing.
This integrated approach lowers overall audit compliance fees, reduces administrative burdens on corporate accounting staff, and provides senior management and audit committees with real-time visibility into the organization’s overall risk profile.
Core Implementation Guidelines
1. Transition to 100% Data Testing: Replace legacy sampling methods with automated continuous audit monitoring systems.
2. Deploy Anomaly Detection Algorithms: Implement machine learning models to identify unauthorized transactions and operational control overrides.
3. Align Internal and External Audit Workflows: Coordinate continuous control testing protocols with external auditors to optimize annual compliance cycles.