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IT Support for Accountants: What Your Practice Needs to Stay Compliant and Secure

10 July 2026

Accountants have access to everything. Bank statements, tax returns, payroll data, company accounts, personal financial records, VAT submissions. If there's a profession where data protection isn't optional, it's accounting. Yet many small practices are running on outdated systems, with no MFA on their email, client files in unencrypted shared folders, and a backup strategy that amounts to hoping nothing goes wrong.

The accounting profession is also in the middle of a significant technology shift. Making Tax Digital, cloud accounting platforms, automated bookkeeping, client portals. Practices that don't keep up risk falling behind. But adopting new technology without proper IT support creates new risks.

86%of accounting firms say cybersecurity is a growing concern

Why Accounting Firms Are Targeted

Financial Data Is Valuable

An attacker who compromises an accountant's systems doesn't just get one company's data. They get financial information for every client the firm works with. Bank account numbers, tax reference numbers, company financials, personal income details. This data is extremely valuable for fraud, identity theft, and corporate espionage.

Tax Season Pressure

Attackers know that accounting firms are under extreme pressure around self-assessment deadlines, year-end, and VAT quarters. Phishing emails impersonating HMRC, clients, or software providers are timed to arrive when staff are rushing and more likely to click without thinking.

Trusted Relationships

Accountants have trusted access to client bank accounts, payment authorisations, and financial systems. An attacker who compromises an accountant's email can send convincing payment requests to clients, redirect refunds, or intercept sensitive financial documents. The trust relationship makes the attack more convincing.

If your email is compromised and an attacker sends fraudulent payment instructions to your clients using your email address, the reputational damage alone could end your practice. The financial liability may follow.

What Accounting Practices Need

Cloud Accounting Platform Management

Whether your practice uses Xero, QuickBooks, Sage, FreeAgent, or a combination, these platforms need to be properly configured. That means individual user accounts (not shared logins), appropriate access levels, MFA enabled, and proper integration with your other systems.

If you're using practice management software like Karbon, Senta, or TaxCalc, the same principles apply. Each platform that holds client data needs proper security and access controls.

Making Tax Digital

MTD for Income Tax Self Assessment is expanding, and practices need compatible software and reliable connectivity. If your systems can't reliably submit to HMRC because of IT issues, you're putting your clients at risk of penalties and your practice at risk of losing them.

Email Security

Email is how most attacks on accounting firms begin. You need:

  • Multi-factor authentication on every account. A compromised email account at an accounting firm is catastrophic.
  • Anti-phishing protection that catches HMRC impersonation, fake client emails, and malicious attachments.
  • SPF, DKIM, and DMARC to prevent attackers sending emails as your practice.
  • Email encryption for sending sensitive financial documents. Tax returns and bank statements shouldn't travel in plain text.

Data Encryption and Access Controls

Client financial data must be encrypted at rest and in transit. Every device that accesses client data needs full disk encryption. Access should be role-based. Trainees don't need access to every client file, and when someone leaves the practice, their access must be revoked immediately.

Backup and Disaster Recovery

If ransomware encrypted your practice management system and all your client files the week before the self-assessment deadline, what would you do? Your backup strategy needs to be robust, tested, and capable of restoring your systems quickly. Cloud platforms provide some resilience, but you still need backups of your email, documents, and any local data.

Secure File Sharing

Clients need to send you bank statements, receipts, and other sensitive documents. And you need to send them accounts, tax computations, and financial reports. If you're doing this via regular email attachments, you're transmitting sensitive financial data without encryption. A secure client portal or encrypted file sharing solution is a professional necessity.

Common Problems We See

  • Shared logins to accounting software. Three people using the same Xero login. No audit trail, no accountability, no access control.
  • Client documents emailed as unencrypted attachments. Tax returns, bank statements, and payroll data travelling in plain text across the internet.
  • No MFA on email or practice management. One phished password and every client's financial data is exposed.
  • No leavers process. A former employee still has access to client records months after leaving.
  • Tax return backups only on a local hard drive. One hardware failure or ransomware attack and years of client records are gone.
  • Personal devices with no management. Partners accessing client data on personal laptops with no encryption or remote wipe capability.

Professional Body Expectations

ICAEW, ACCA, AAT, and CIOT all have guidance on data protection and cybersecurity for their members. The expectations are clear: protect client data, implement proportionate security controls, train staff, and have an incident response plan. If your practice suffers a breach and you can't demonstrate you had reasonable protections in place, you face both regulatory action and professional conduct proceedings.

How Senri Supports Accounting Practices

  • We understand the accounting workflow. Tax deadlines, client data sensitivity, multi-platform environments. We configure IT with your workflow in mind.
  • We secure email and file sharing. MFA, anti-phishing, DMARC, and encrypted communication channels. The protections that prevent the attacks accountants face most.
  • We manage your devices. Encryption enforced, updates applied, lost devices wiped. Client data stays protected whether you're in the office or working from home.
  • We keep MTD working. Reliable connectivity, compatible software, and support when HMRC submissions fail at 11pm on January 30th.
  • No long contracts. Month-to-month, transparent pricing. We earn your business every month.

Your clients trust you with the most complete picture of their finances. That trust is your practice's most valuable asset. Protecting it isn't just good IT. It's good business.

Where to Start

  1. Run a free health check. Our free IT health check scans your practice domain for email authentication gaps and basic security issues.
  2. Enable MFA everywhere. Email, Xero, QuickBooks, practice management. Every platform that holds client data.
  3. Review who has access to what. Do former staff still have logins? Does everyone have access to everything?
  4. Talk to us. A 15-minute call is enough to identify the biggest risks. Get in touch.

Want to talk about this?

Book a free 15-minute call and we'll discuss how this applies to your business.

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