During tax season, a CPA firm should treat tolerable downtime as minutes, not hours. As a practical planning benchmark, your firm should aim to restore tax software, client files, authentication, internet, and email within 60 minutes, with a secure workaround available much sooner. Less critical systems may tolerate several hours. Your exact limit depends on your deadlines, staffing, and backup options, but the cost of downtime rises too quickly during busy season to leave that limit undefined.
Tax season is when accounting firms make a large share of their annual revenue. Teams work long days, client commitments stack up, and filing dates do not move because a server, firewall, or internet connection failed. When it is all hands-on deck, one technology problem can affect the entire firm.
That is why I ask firm leaders a direct question before busy season: If this system stopped working right now, how long could your team continue before client work, deadlines, or revenue suffered?
The answer should shape your IT priorities.
Full Outages Versus Partial Downtime
A full outage stops most or all productive work. Employees may lose access to tax applications, shared files, email, the internet, or the office network. If your firm still relies on a local server and that server fails, the disruption can reach everyone who needs its applications or data. Common causes of a full outage include:
- A failed server or storage device
- A firm-wide internet or network outage
- Firewall failure
- Power loss without sufficient battery backup or generator coverage
- Ransomware or another cybersecurity incident
- A cloud platform or identity provider outage
- A failed update that affects a critical system
For a cloud-based CPA firm, internet access becomes a critical dependency. If the primary connection fails, can the office move to a secondary connection? If the firewall fails, does your IT provider have a replacement or temporary solution ready? Can employees work securely from home while the office issue gets repaired?
Partial downtime can be harder to recognize because the firm remains open. One tax application may stop working, remote access may disconnect, or a slow workstation may add 10 minutes to a task. Common causes include overloaded applications, ISP instability, Wi-Fi dead zones, aging computers, failed integrations, and software vendor incidents.
Those interruptions create a ripple effect. Ten extra minutes may not sound serious until it happens several times a day across 20 or 30 employees. The same logic applies to an aging computer. If replacing it costs $2,000, how much productive time must an employee lose before the firm spends far more than $2,000 through delays?
Why Technology Raises the Cost of Downtime During Tax Season
Modern CPA firms depend on connected systems for nearly every step of client service. Teams use tax preparation software, accounting and audit applications, document management systems, client portals, email, Microsoft 365, electronic signatures, remote access tools, scanners, printers, and multifactor authentication.
These tools do not operate in isolation. A tax application does not help if employees cannot reach the server. A cloud portal does not help if the internet fails. A remote employee cannot work if the firewall or authentication service is unavailable.
The cost of downtime grows during tax season because the firm has less schedule flexibility. In July, a two-hour delay may shift work to the afternoon. Near a filing deadline, that same delay may force the team to work late, move other returns, contact worried clients, and spend the next day catching up.
Consider a firm with employees working from a Phoenix office and homes across Scottsdale, Tempe, Mesa, or other parts of the country. A local internet failure may stop the office but leave remote employees working. An authentication or cloud application outage may affect everyone, regardless of location. Your plan needs to reflect how your people work, not how the firm operated several years ago.
How to Calculate the Cost of Downtime
Start with the financial impact you can measure:
Affected employees × average fully loaded hourly cost × outage hours = estimated productivity loss
Suppose 25 employees have an average fully loaded hourly cost of $55 and a two-hour outage prevents all of them from working. The estimated productivity loss equals $2,750. If a partial outage affects 40% of the team, the estimate equals $1,100.
Ma’atIT’s IT Downtime Calculator estimates this employee productivity loss. The hourly cost should include more than wages. Add benefits, payroll taxes, and other employment costs to create a more realistic estimate.
When leaders calculate the cost of downtime, they also need to separate productivity loss from the larger business impact. Idle payroll belongs in the productivity estimate. Lost billable revenue does not. The calculator also does not attempt to predict every downstream expense. Add these potential costs to your planning discussion:
- Lost billable time: Employees may not recover every hour that an outage takes away.
- Overtime and catch-up work: The firm may pay people to repeat work, rebuild schedules, or work nights and weekends.
- Delayed IT resolution: A long diagnosis increases disruption and may require emergency vendor support, replacement equipment, or expedited shipping.
- Client communication: Partners and managers may spend valuable time explaining delays instead of completing work.
- Missed commitments: A disruption can delay reviews, signatures, extensions, filings, and client deliverables.
- Lost confidence: Clients expect their CPA firm to safeguard information and meet critical dates.
A cybersecurity event can add insurance claims, higher future premiums, attorney fees, forensic work, notification expenses, public relations support, and reputational harm. The calculator provides the tip of the iceberg. Its best use is to start the “what if” conversation before an incident.
IT Response and Resolution Times That Control the Cost of Downtime
Response time and resolution time measure different things. Response time tells you how quickly your provider acknowledges the issue and begins triage. Resolution time tells you how long it takes to restore the affected service or provide a safe workaround.
For a critical busy-season outage, I recommend a written target that requires acknowledgment within 15 minutes and immediate triage. Your provider should also define who receives updates and how often. A lower-priority issue, such as a problem affecting one user who has another way to work, can follow a longer target.
No honest IT provider can promise the same resolution time for every failure. Restarting a service differs from replacing a firewall, restoring a server, or containing ransomware. Ask for severity-based goals, recovery targets for each critical system, and a restore-first plan that gets people working safely while the team completes the permanent repair. Ask your current or prospective IT provider:
- How do you define critical, high, normal, and low-priority issues?
- When does the response-time clock start, and what counts as a response?
- What support do you provide after hours, on weekends, and near tax deadlines?
- Who takes ownership when an internet, software, or cloud vendor causes the problem?
- What is the escalation path if the first technician cannot resolve the issue?
- How often will firm leadership receive updates during a major outage?
- What backup internet, firewall, server, and remote-work options do you recommend?
- When did you last test our backups, restoration process, and recovery time?
- What recovery time and recovery point have we set for each critical system?
- After an incident, will you document the cause and preventive action?
Do not accept “we have good response times” as a complete answer. Ask what good looks like in minutes, what happens next, and whether those commitments align with your firm’s operational goals.
A 30-Day Pre-Tax-Season IT Readiness Checklist
At Ma’atIT, we conduct post-tax-season reviews with our clients. Preparation for the next busy season starts when the current one ends. We ask what went well, what failed, where the firm lost time, and what would improve profitability next year.
If busy season is 30 days away, use this checklist to address the highest-priority risks.
Days 30-21: Define the Risk
- Review last season’s tickets, slowdowns, outages, and recurring complaints.
- Identify the systems required for tax preparation, file access, communication, signatures, and remote work.
- Set a maximum tolerable outage and recovery target for each critical system.
- Confirm which employees, departments, and locations each failure could affect.
- Replace unreliable workstations and network equipment before workloads peak.
- Review software licenses, warranties, vendor contacts, and renewal dates.
Days 20-11: Test the Backup Plans
- Restore a sample of critical files and confirm that employees can open and use them.
- Test server or cloud recovery procedures instead of relying only on a successful backup alert.
- Test secondary internet service and document how the office switches over.
- Confirm the firewall contingency and replacement process.
- Test secure remote work for key employees from outside the office.
- Check battery backups for servers, network equipment, and essential workstations.
- Verify multifactor authentication and remove inactive accounts.
- Install critical patches and updates with enough time to correct unexpected issues.
Days 10-1: Rehearse and Communicate
- Run a short outage exercise with leadership, operations, and the IT provider.
- Confirm who declares an incident and who contacts employees, clients, insurers, and vendors.
- Give staff one clear way to report urgent problems.
- Save critical contact information somewhere accessible when the network is unavailable.
- Confirm after-hours coverage, escalation contacts, and deadline-period staffing with the IT provider.
- Prepare client communication templates for significant delays or service interruptions.
- Avoid nonessential system changes during the final days before peak workload.
- Ask employees to report slow devices and intermittent problems before they become failures.
This checklist cannot eliminate every outage. It can reduce preventable problems, shorten recovery, and give your team a clear Plan B.
Turn the Number into a Better IT Decision
The goal is to help leaders ask better questions and make thoughtful decisions before workloads and deadlines peak.
Once you estimate the cost of downtime, compare the number with the investments that could reduce the risk: secondary internet, tested backups, faster equipment replacement, stronger cybersecurity, better monitoring, or support with clear response and escalation commitments. You may find that a practical safeguard costs far less than one busy-season interruption.
Use the Downtime Calculator to start the conversation. Enter your employee count, hourly costs, and expected outage length to estimate what a busy-season disruption could cost your firm.
Contact Ma’atIT to discuss your firm’s IT readiness and build a practical plan to keep your team working throughout busy season.
Fady Salama, President
Fady Salama is the Founder and CEO of Ma’atIT, where he helps businesses align technology with profitability and growth. With a strategic, numbers-driven approach, Fady works as a fractional CIO for his clients, going beyond IT support to build smarter roadmaps, reduce waste, and drive measurable business results.