IRS WISP Compliance • Orange County
IRS WISP Compliance Consulting for Tax Preparers
OC Security Audit helps tax preparers, CPA firms, enrolled agents, and accounting offices build a practical Written Information Security Plan, review cybersecurity safeguards, organize compliance evidence, and reduce taxpayer data risk.
CISO-Led Review25+ Years ExperienceIRS WISP DocumentationTaxpayer Data Safeguards
WISPWritten Plan
MFAAccess Security
EvidenceAudit Ready
What It Is
What is an IRS WISP?
An IRS WISP, or Written Information Security Plan, is a formal security program document that explains how a tax office protects taxpayer information. It should describe the safeguards, roles, policies, risk review process, vendor oversight, incident response process, and evidence used to protect client data.
For tax preparers, a WISP is not just a document stored in a folder. It should map to real controls: Microsoft 365 access, MFA, device protection, backups, email security, file sharing, remote access, secure disposal, employee awareness, and response steps if client information is exposed.
This page is for initial guidance only and does not replace a professional cybersecurity audit, compliance assessment, penetration test, or legal/compliance review.
Who Needs It
Who needs a WISP?
Any business that handles taxpayer data should be able to show that it has a practical security plan and reasonable safeguards for protecting sensitive client information.
01
Tax preparers and enrolled agents
Seasonal and year-round tax offices need documented safeguards for intake, preparation, filing, storage, sharing, and disposal of taxpayer information.
02
CPA firms and accounting offices
CPA firms often manage tax data, payroll records, financial statements, portals, email attachments, and cloud files that require access control and evidence discipline.
03
Bookkeeping and advisory firms
Firms that support tax workflows, payroll, or financial operations should document how client data is secured across endpoints, cloud systems, vendors, and backups.
Security Safeguards
Safeguards required for tax preparer cybersecurity
A strong WISP connects the written plan to technical controls that are configured, monitored, and supported by evidence.
Identity and MFA
Review Microsoft 365 security audit findings and portal accounts, administrator roles, MFA coverage, conditional access, password policies, guest access, and risky sign-in visibility.
Email and phishing controls
Validate anti-phishing policies, SPF/DKIM/DMARC, suspicious forwarding rules, mailbox delegation, attachment controls, and reporting workflows.
Endpoint protection
Confirm endpoint security controls, encryption, patching, antivirus/EDR, screen lock, local admin control, USB/removable media practices, and remote wipe options.
Backups and recovery
Document backup and disaster recovery scope, retention, encryption, offsite/immutable protection, restore testing, recovery ownership, and ransomware recovery assumptions.
Network and firewall security
Review firewall and network security, Wi-Fi segmentation, remote access, VPN exposure, open ports, logging, and separation between business, guest, and sensitive systems.
Incident response
Define who responds, how evidence is preserved, how accounts are contained, when clients or regulators may need notification, and how incident response recovery is documented.
Evidence Ready
Documentation and evidence requirements
OC Security Audit helps turn security activity into a defensible WISP evidence package that management and IT can actually maintain.
Written planWISP structure, scope, roles, safeguards, review cycle, and update process.
Risk reviewPractical risk register for taxpayer data systems, cloud apps, vendors, and endpoints.
Evidence checklistWhat to retain for MFA, backups, access reviews, endpoint controls, training, and vendors.
Remediation roadmapPrioritized technical and documentation improvements for readiness and risk reduction.
Executive summaryBusiness-friendly findings for owners, partners, and office managers.
Common Gaps
Common IRS WISP gaps we find
- WISP document exists but does not match the real Microsoft 365, backup, endpoint, firewall, or portal configuration.
- MFA is enabled for some users but not administrators, shared mailboxes, legacy access, remote access, or third-party portals.
- Backups are assumed to be working but restore testing, immutable protection, and ransomware recovery procedures are not documented.
- Tax software, file sharing, email attachments, and client portals are used without a clear access review and vendor evidence process.
- Incident response steps are generic and do not explain who disables accounts, preserves logs, contacts support, and documents decisions.
How We Help
How OC Security Audit supports WISP compliance readiness
We combine practical cybersecurity review, executive documentation, and technical remediation planning so the WISP reflects the way your tax office actually works.
WISP documentation consulting
We help organize the Written Information Security Plan around the firm’s systems, data flow, people, vendors, and safeguards. See our core IRS WISP compliance consulting service.
Cybersecurity control review
We review related safeguards through internal security audit, Microsoft 365 audit, and broader compliance consulting lenses.
Governance and remediation planning
We map gaps to practical owners, timelines, and evidence. If ongoing leadership is needed, our security governance support can help keep the WISP current.
Free Readiness Tool
Start with the free IRS WISP readiness assessment
Use the free tool to quickly identify common WISP gaps in Microsoft 365 security, backups, access controls, employee safeguards, vendor management, and documentation. For broader context, compare this page with our cybersecurity audit for CPA firms and tax preparers.
About Ali Hassani
Created by Ali Hassani, CISO
Ali Hassani brings 25+ years of IT, cybersecurity, compliance, Microsoft infrastructure, network security, and risk assessment experience to OC Security Audit clients. His work helps business owners, CPA firms, tax preparers, and IT leaders translate security requirements into practical safeguards and evidence.
Ali’s credentials include CISSP, CCISO, CCNP, CCNA, MCSE, MCSA Security, MCITP, MCP, and MCTS. Learn more on Ali’s OC Security Audit profile.
FAQ
IRS WISP consulting questions
Is a WISP required for tax preparers?
Tax preparers and firms that handle taxpayer information are expected to maintain a written security plan and reasonable safeguards for client data. The exact content should reflect your office, systems, vendors, people, and risk profile.
Does a template WISP solve the requirement?
A template can be a starting point, but it should be customized to the actual environment. A defensible WISP should match real controls such as MFA, backups, endpoint security, email protection, vendor management, and incident response.
What systems do you review for WISP readiness?
Typical reviews include Microsoft 365, email security, tax software access, client portals, endpoints, backups, firewalls, remote access, admin accounts, logging, vendor evidence, and security awareness practices.
Can OC Security Audit help fix the technical gaps?
Yes. OC Security Audit can provide assessment and roadmap support. When ongoing IT implementation is needed, related IT support may be coordinated through IT Perfection cybersecurity services or proactive monitoring and maintenance.
Does this replace legal or compliance advice?
No. This service supports cybersecurity readiness, documentation, and technical safeguards. It does not replace legal advice, tax regulatory advice, a formal compliance attestation, or a full penetration test.
Make your WISP practical, current, and evidence-ready.
Schedule a focused IRS WISP readiness consultation for your tax preparation office, CPA firm, or accounting business in Orange County or Southern California.