How long do business computers last?

23 Sep How long do business computers last?

Posted at 12:00h in IT Management, TCT News by TCT

Most business computers don’t fail overnight. A laptop may still handle email and documents but become slower, less reliable, or struggle with newer software. Rather than waiting for devices to fail, businesses should start reviewing computers once they reach three years of age.

Start with Security

The most important question is whether the computer can continue running a supported operating system. Once security updates stop, the device becomes a greater risk to the business. If a computer cannot support a current operating system, replacement is usually the safest option.

Consider Performance and Reliability

Age alone should not determine when a device is replaced. A three-year-old computer may continue to perform well, while another may require frequent repairs or struggle with everyday tasks.

Warning signs include:

Slow startup and application loading
Poor video call performance
Frequent crashes or unexpected shutdowns
Battery issues on laptops
Repeated support requests or repairs

Before replacing a slow computer, ask your IT provider to investigate the cause. Problems such as low storage, insufficient memory, or software issues can often be resolved without purchasing new hardware.

Match the Device to the Employee

Employees using email, web browsers, and Office applications may comfortably use a computer for five years or more. Staff working with large spreadsheets, design software, video editing, engineering applications, or multiple programs simultaneously may need more powerful hardware sooner.

Upgrade or Replace?

In some cases, upgrading memory, storage, or replacing a battery can extend the life of a computer. However, if the device is nearing the end of its support lifecycle or has ongoing reliability issues, replacement is often the better long-term investment.

Create a Replacement Plan

Maintain a register of device purchase dates, warranty expiry dates, operating systems, and assigned users. Review each computer at three years and assess:

Security and operating system support
Performance and employee requirements
Warranty status
Repair history and costs
Battery health (for laptops)

By spreading replacements over several years, businesses can budget more effectively, avoid large refresh costs, and ensure employees always have secure and reliable equipment.

The Bottom Line

A good rule of thumb is to review business computers at three years and expect replacement somewhere between three and five years, depending on security support, reliability, performance, and the employee’s needs. A computer should be replaced when it is no longer secure, reliable, or suitable for the job, not simply because it has reached a certain age.

If the computer fails the security or software-support checks, plan to replace it. For performance and repair issues, compare the cost of fixing the device with the likely cost of keeping it for another year.

Robert Brown
23/9/2026