CCA Class 50. Computer Hardware

Definition

Class 50 is the 55% declining-balance CCA class for "general-purpose electronic data processing equipment and systems software". It was introduced for property acquired after March 18, 2007, superseding Class 45 (45%) and Class 52 (100% for a narrow 2009-2011 window). Desktop and laptop computers, servers, monitors, network switches, printers, and the bundled operating system fall into Class 50. Peripheral equipment that operates with the computer is also included.

Key rules

• Rate: 55% declining balance.
• Subject to the half-year rule unless the property is AIIP. 2026 AIIP enhancement is 1.25× on the first-year deduction (phase-out). See AIIP.
• Systems software (operating system, drivers packaged with the machine) is included in Class 50 with the hardware. Application software (business apps, accounting software) goes to Class 12.
• Pooled class: all Class 50 assets share a single UCC account within the same taxpayer.
• Mobile phones and tablets historically could be Class 50 when the primary function was data processing, but CRA's current position is that smartphones are generally Class 8 (update reflected in CRA guidance since 2016). Confirm with current CRA Folio S3-F4-C1 for the specific device.
• Cloud-hosted servers and SaaS subscriptions are not Class 50. They are operating expenses (or Class 14.1 if a perpetual licence was bought).

Example

A BC corporation buys a $4,000 laptop and a $12,000 on-premises server on July 1, 2026. The items are new to the taxpayer and acquired from an arm's-length vendor, so they are AIIP. Existing Class 50 UCC opening balance is $3,500. Calendar year end.

1. Additions (AIIP) = $4,000 + $12,000 = $16,000.
2. No half-year rule on AIIP.
3. First-year CCA on AIIP additions: $16,000 × 55% × 1.25 = $11,000.
4. CCA on prior-year UCC: $3,500 × 55% = $1,925.
5. Total 2026 Class 50 CCA = $12,925.
6. Closing UCC = $3,500 + $16,000 − $12,925 = $6,575.

When the laptop is retired two years later for $500, the $500 reduces the Class 50 UCC by the lesser of proceeds and original cost. The pooled nature of the class means no immediate gain or loss unless the class is emptied, in which case terminal loss or recapture applies.

Common mistakes

• Capitalising SaaS or cloud subscriptions in Class 50. These are current expenses.
• Putting the accounting application software in Class 50. Applications go to Class 12.
• Applying AIIP to used or related-party computer equipment, which fails the "new to the taxpayer" requirement.
• Forgetting the half-year rule on non-AIIP additions in the last AIIP phase-out year.
• Tracking individual computers as separate UCC pools. Class 50 is pooled; individual tracking is useful for the asset register but not for CCA.

Related concepts

Class 50 is the home for most computer hardware. Related classes include Class 12 for application software and Class 8 for peripherals CRA treats as general equipment. CCA mechanics follow CCA overview with the half-year rule and AIIP.