Comparison

Cloud vs on-premise document storage for accounting firms

Q: Is cloud storage secure enough for client tax documents?

Yes, when configured correctly. Major cloud [DMS platform](/tools-document-management-accounting)s use bank-level encryption, SOC 2 compliance, and access controls that exceed what most small firms achieve on-premise. The security risk is usually in configuration (weak passwords, overly permissive sharing settings) rather than in the cloud platform itself.

Should your accounting firm move documents to the cloud or keep them on-premise? A practical comparison covering cost, access, security, and compliance.

By Accounting Practice Workflows TeamLast reviewed: 2026-03-26

Contents

1.Cloud vs on-premise comparison
2.When cloud makes sense
3.When on-premise still makes sense
4.The practical question
5.Disclosure
6.Is cloud storage secure enough for client tax documents?
7.How much does on-premise storage really cost?
8.What about data sovereignty â€” can our data leave the country?
9.Should we keep a local backup of cloud-stored documents?

The cloud versus on-premise decision for accounting firm documents is less about technology preference and more about practical tradeoffs: who manages the infrastructure, how do staff access files remotely, and what happens when something fails. Most small firms are moving to cloud storage, but on-premise retains advantages for specific situations.

Cloud vs on-premise comparison

Dimension	Cloud Storage	On-Premise Storage
Upfront cost	Low â€” subscription-based	High â€” hardware, setup, licensing
Ongoing cost	Predictable monthly fee	Hardware maintenance, IT support, power
Remote access	Built-in â€” any device, anywhere	Requires VPN or remote desktop
Physical control	Vendor manages infrastructure	You control hardware and location
Backup and recovery	Vendor-managed, automated	Your responsibility to configure and test
Scalability	Instant â€” upgrade your plan	Requires hardware purchase and setup
Security responsibility	Shared â€” vendor + your configuration	Fully your responsibility
Internet dependency	Yes â€” no internet means no access	No â€” local access always available
Compliance	Vendor provides certifications (SOC 2, etc.)	You must achieve and maintain compliance
Migration effort	Upload and organize	Hardware setup and network configuration

When cloud makes sense

Cloud storage is the right default for most small accounting firms. The benefits are practical: staff access documents from home, the office, or client sites without VPN complexity. Backups are automatic. Scaling storage is a plan upgrade, not a hardware purchase. For firms with fewer than twenty staff members, the cost of cloud storage is almost always lower than maintaining on-premise infrastructure when you factor in hardware, IT support, backup management, and power costs. Cloud vendors like SmartVault, ShareFile, and TaxDome provide SOC 2 compliance, encryption, and access controls that would cost a small firm significantly more to achieve on-premise.

When on-premise still makes sense

On-premise storage retains advantages for firms with specific requirements: extremely sensitive data that policy requires to stay on physical hardware you control, very high document volumes where cloud storage costs become significant, or locations with unreliable internet where cloud access is intermittent. Some firms use a hybrid approach: cloud for active client documents and remote access, on-premise for long-term archival storage. This balances accessibility with cost and control. If you are currently on-premise and considering a cloud migration, plan for a phased transition â€” move active clients first and archive historical data separately.

The practical question

If your internet went down for a day, could your firm operate? If the answer is already no (because of email, accounting software, and other cloud tools), on-premise document storage does not add meaningful resilience. If the answer is yes, on-premise documents may contribute to that resilience.

Disclosure

Some links on this page may be referral links. If you choose a tool through one of these links, it may support this site at no extra cost to you. We only include tools we would evaluate ourselves.

Is cloud storage secure enough for client tax documents?

Yes, when configured correctly. Major cloud DMS platforms use bank-level encryption, SOC 2 compliance, and access controls that exceed what most small firms achieve on-premise. The security risk is usually in configuration (weak passwords, overly permissive sharing settings) rather than in the cloud platform itself.

How much does on-premise storage really cost?

For a small firm: server hardware ($2,000-5,000 every 3-5 years), backup solution ($500-1,500 per year), IT support ($100-200 per month for managed services), plus power and maintenance. Total: $4,000-8,000 per year. Cloud storage for the same firm: $1,500-5,000 per year depending on the platform and storage volume.

What about data sovereignty â€” can our data leave the country?

Most cloud DMS vendors allow you to specify data residency â€” keeping your data in US data centers. Verify this during evaluation if data sovereignty matters for your clients or compliance requirements. Major platforms like ShareFile and SmartVault offer US-based data centers.

Should we keep a local backup of cloud-stored documents?

Yes. Periodic local backups provide a safety net against cloud vendor failures, account compromises, or subscription cancellations. Most cloud DMS platforms support bulk export for this purpose. Schedule quarterly backup exports and store them on a local encrypted drive.

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