IT Support for Accounting and CPA Firms
Filing deadlines leave little room for inaccessible client files, failed devices or an unclear support handoff. NetSys manages the systems behind your tax and accounting work, with access controls, Microsoft 365 and tested recovery. Plan changes around your firm’s busy periods and application responsibilities.
The short answer
NetSys provides managed IT services for accounting and CPA firms, including user support, Microsoft 365, identity and email security, managed devices and tested backups. The support scope should name your tax and accounting applications, distinguish vendor application support from infrastructure support, and account for seasonal staff and remote access. Agree maintenance windows around filing deadlines and document which systems must recover first. We implement and evidence technical controls; your firm and advisers determine the applicable regulatory and filing obligations. Client identities remain subject to confidentiality and publication permission.
Sound familiar?
- A complete financial identity for every client, concentrated in one document store
- A filing season during which downtime is not survivable — and change freezes nobody planned
- Refund, invoice and partner-impersonation fraud arriving by email at exactly the busiest moment
- FTC Safeguards Rule and WISP obligations with nobody whose job it is to own them
- Staff working from home part of the week on machines the firm does not control
- Backups that have never actually been restored, so nobody knows the real recovery time
What we deliver for accounting practices
Protecting Client Financial Data
- Multi-factor authentication and conditional access across every account
- Managed endpoint detection & response on firm devices
- Personal and unmanaged devices fenced away from the document store
- Secure client-document exchange instead of tax returns sent as email attachments
Season-Aware Operations
- Major changes and migrations scheduled outside filing season by design
- Patch windows that do not collide with deadline days
- 24/7 monitoring year-round, with a dedicated account manager on a real cell number
- Readiness reviews run in the autumn, when there is time to act on them
Documentation That Holds Up
- A Written Information Security Plan describing what the firm actually does
- Access reviews that leave an auditable trail
- Incident-response procedure written down before it is needed
- Evidence organised so an insurer or client questionnaire can be answered from records
Recovery You Have Measured
- Immutable offline backups covering practice management and the document store
- Restores actually performed, timed and dated — not merely reported as green
- A written recovery-time objective so 'how long would we be down' has a real answer
- 100% of NetSys clients hit by ransomware have fully recovered
Accounting firm compliance: the FTC, the IRS and the tax code
Tax and accounting practices count as financial institutions under federal law, and the IRS ties data security to preparer credentials. Your firm and counsel interpret the obligations; we implement the controls and the documentation behind your WISP.
FTC Safeguards Rule (16 CFR Part 314)
Tax preparers and accounting firms need a written information security program run by a Qualified Individual, with a risk assessment, MFA, encryption, vendor oversight and testing. Firms holding data on fewer than 5,000 consumers are exempt from some requirements, and since May 13, 2024 a breach affecting 500 or more consumers must be reported to the FTC within 30 days.
IRS Publications 4557 and 5708
Publication 4557 sets out how preparers should safeguard taxpayer data, and Publication 5708 gives a template for the written plan. The PTIN renewal on Form W-12 asks preparers to confirm they have a written data security plan, so the WISP has to describe what the firm actually does.
Taxpayer information: IRC §7216 and §6713
Preparers who disclose or use return information without the taxpayer's consent face criminal penalties under §7216 and civil penalties under §6713. Access controls, encrypted exchange and an approved list of AI and cloud tools help keep return data inside permitted uses.
Data theft: reporting to the IRS
The IRS asks tax professionals who suffer data theft to contact their IRS Stakeholder Liaison promptly, and to alert their state tax agencies, so fraudulent returns can be flagged. Logs and a written incident plan make that call faster and more complete.
NY SHIELD Act (GBL §899-aa and §899-bb)
Client files full of Social Security numbers and bank details fall under the Act. A firm in compliance with the Safeguards Rule counts as meeting its safeguard section, and notice to affected New Yorkers is due within 30 days of discovering a breach.
This is general information, not legal advice. Confirm your obligations with counsel.
Tax and accounting software we support around
Tax preparation, bookkeeping and client portal software carry the filing season. We manage the workstations, hosted access, update windows and backups around them, and call the vendor with you when the fault is inside the application.
- UltraTax CS
- CCH Axcess
- Lacerte
- Drake Tax
QuickBooks- TaxDome
Product names are their owners’ trademarks. We manage the devices, accounts and access around these applications and work with each vendor’s support. A listing here doesn’t mean we resell an application or partner with its maker.
A 45-person accounting firm, eight weeks before filing season
The specific engagements behind this profile are under NDA, so it is written as a generalization rather than a named client. Our published, client-approved outcomes are in case studies.
Practice-management software, a document store holding a decade of client tax records, and a Microsoft 365 tenant nobody has reviewed since setup. Staff work from home two days a week on a mix of firm laptops and personal machines. The managing partner's worry is not being hacked in the abstract — it is being down for two days in April, and the fact that client financial data sits on devices the firm does not control.
- A readiness review scheduled deliberately outside filing season, with the fix list sequenced so nothing risky lands in March or April
- Microsoft 365 hardened: multi-factor authentication, conditional access separating firm-managed from personal devices, legacy authentication disabled, dormant accounts closed
- Managed endpoint detection and response on firm devices; personal machines fenced off from the document store rather than trusted
- Email defense tuned for the season's real threats — refund and invoice fraud, and impersonation of partners during the busiest weeks
- Immutable backups covering practice management and the document store, with a restore run and timed before the season opens
- A Written Information Security Plan and incident-response procedure documenting what the firm actually does
The intended result is a firm that enters filing season knowing its measured recovery time, with client records reachable only from devices it controls and monitoring running 24/7 behind the deadline weeks. Nothing structural changes during the season, because the work is done before it starts.
Work we have done for accounting firm clients
- Accounting firms
Corporate accounting firm
Migration of 2 TB of business data to Azure, secure remote access for 42 employees, and backup and recovery configuration.
Client names are withheld. Each card is the scope of a real NetSys engagement, as delivered.
Accounting & CPA Firms IT FAQs
How should we handle temporary staff during filing season?
Define named accounts, permitted applications, client-folder access and an expiry date before the person starts. Include device security and the offboarding owner in the plan. Temporary access should be removed when the engagement ends without losing work the firm needs to retain.
What should we check before changing accounting-firm IT support?
Review the filing calendar, application-vendor contacts, administrator access and recovery evidence before setting a handover date. Ask who handles an application outage, a failed workstation or an identity problem during busy periods. Confirm any work that needs a separate project or maintenance window in the proposed scope.
Do you provide IT support for accounting and CPA firms?
Yes — accounting and CPA practices are one of the two financial audiences we serve, alongside hedge funds and investment advisers. The work covers the full environment where a firm wants one provider: helpdesk, 24/7 monitoring and patching, identity and email security, managed endpoint detection and response, Microsoft 365 administration, secure client-document exchange, and immutable backups with tested restores. Where a firm already has an IT provider it likes, we come in as the security layer alongside them instead.
What does IT support look like during tax season?
Deliberately different from the rest of the year. Migrations and major changes get scheduled outside the crunch. Patching moves to windows that do not collide with filing days. Monitoring runs around the clock either way, and when something does go wrong you reach your dedicated account manager at their real cell number rather than climbing a ticket queue. The planning conversation for all of that happens in the autumn, not in March.
Can you help us produce a WISP for the FTC Safeguards Rule?
We build and document the controls a Written Information Security Plan describes — access control, encryption, multi-factor authentication, endpoint protection, vendor oversight, incident response, and evidence that all of it is genuinely in place — and we keep that documentation in a state that can be handed over rather than reconstructed under pressure. What we will not do is hand you a template describing a firm you are not. Interpreting your obligations and deciding what your firm files stays with the firm and its counsel; what we supply is the control set and the evidence behind it.
How do you stop refund fraud and partner impersonation?
In layers, because no single control does it. Multi-factor authentication and conditional access, so a stolen password is not enough on its own. Email threat protection tuned for lookalike domains and reply-chain hijacking. Alerting on inbox rules that quietly forward or delete mail — a classic precursor. Then the part that is not technology: an out-of-band callback procedure for any change to payment or refund instructions, written down and enforced regardless of who appears to be asking, including on a video call.
Our staff work from home on their own laptops. Is that a problem?
It is the single most common exposure we find in accounting practices, and it is fixable without buying everyone a new machine. Conditional Access can separate firm-managed devices from personal ones, so client financial data is reachable from the former and not the latter, while email and lighter-weight work still function from a personal device. That distinction is usually more valuable, and far cheaper, than a blanket hardware refresh.
Will you name our firm in your marketing?
No. Our accounting and financial clients engage under confidentiality and we honour that in our marketing, not only in our contracts — which is precisely why this page carries no named clients and no engagement metrics. We would rather publish nothing than publish something invented. Where a reference matters, we arrange it privately with a client's consent.
What happens if we get hit by ransomware during filing season?
The outcome is decided before the attack, by whether your backups are immutable and whether anyone has actually restored from them. Every NetSys client hit by ransomware has fully recovered — a 100% record — and that record rests on tested restores rather than luck. We put immutable offline backups in place, run and document a real restore, and write down the recovery-time objective, so the answer to 'how long would we be down in April' is a measured number rather than a hope.
Do you require a long-term contract?
No — every NetSys agreement is month to month. We keep clients by performing rather than by locking them in; retention runs 98%.
Do you support tax software such as UltraTax CS, CCH Axcess, Lacerte or Drake?
We support everything around it: the server or hosted connection, workstations, updates scheduled outside deadline weeks, printers and scanners, backups of the data and user access by role. Problems inside the tax application go to its vendor, and we stay on the call. Annual program updates are scheduled with the firm before the season opens.
What IT support does a small accounting practice need?
Less than a large firm, but not less security. A small practice or solo CPA still needs MFA on every account, encrypted laptops, a secure portal instead of emailed returns, immutable backups with a tested restore, and a written information security plan. A help desk and monitoring then keep the season from depending on one person's weekend.
What should a tax practice do after a data theft?
Contain it, then report it. Disconnect affected devices, reset credentials and preserve logs, then contact your IRS Stakeholder Liaison and state tax agencies so fraudulent returns can be stopped. Notify affected clients under state law, and report to the FTC if 500 or more consumers are involved. A written incident plan keeps those steps in order.
How can clients send documents without email attachments?
Give them a portal. Client portal software or a SharePoint file request lets clients upload returns and statements to a secure location with MFA, and the firm keeps an access record. For one-off exchanges, encrypted email works. Either way, staff stop searching inboxes for attachments and documents stop living in sent folders.
Guides for accounting & cpa firms leaders
- Plan a provider change around the filing calendar
- Compare accounting-firm support and security scope
- Managed IT for Accounting Firms in Brooklyn — two real engagements
- AI Automation for Accounting Firms: Where to Start
- Business Email Compromise: How Small Businesses Get Hit
- Cyber Insurance in 2026: What Small Businesses Must Have
- Microsoft 365 Management & Backup
- Free External Penetration Test
- Cybersecurity Assessment
- Security Assessments & Risk Review
- IT & Security for Hedge Funds and Investment Firms
- vCISO Services
- IT support for Great Neck CPAs
- Red Bank accounting firm IT
- cybersecurity and managed IT in Westchester
- FTC Safeguards Rule program for tax and accounting firms
- Writing a WISP for a tax practice
- Cybersecurity for financial firms, tax preparers included
- Encrypted email for returns and client documents
Other industries we support
Services behind this work
Plan support around your next filing period.
Tell us the applications you use, permanent and seasonal team size, and the dates when changes are hardest. Request a call about support scope, access or recovery priorities.