Business computers typically remain economic for three to five years, depending on the work they do. The practical test is whether a repair costs more than a third of replacement, whether the machine will still be adequate in two years, and whether it is still receiving operating system security updates. Planned replacement on a schedule costs the same as emergency replacement and removes the disruption.
Four questions that settle it
Is it still getting security updates?
This is the hard line rather than a judgement call. A machine on an operating system no longer receiving security updates is a liability regardless of how well it runs, and it will show up on an insurer's questionnaire.
Does the repair cost more than a third of replacement?
A rough but reliable rule. A $400 screen on a $1,400 laptop that's four years old is usually money spent on borrowed time.
Will it still be adequate in two years?
Not just today. If it's already struggling with what the person does now, fixing it buys months rather than years.
How much time is it costing?
Ten minutes a day lost to a slow machine is roughly a working week a year, per person. Against what your staff cost, that maths usually settles it quickly.
Realistic lifespans
| Role | Typical economic life | Why |
|---|---|---|
| Office / admin laptop | 4–5 years | Light workload. Usually limited by battery and operating system support rather than performance. |
| Reception / point of sale | 4–5 years | Undemanding work, but downtime is highly visible — worth replacing before failure rather than after. |
| Design, CAD or video workstation | 3–4 years | Software requirements move fastest here. Often replaced for capability rather than failure. |
| Field laptop or tablet | 2–3 years | Dropped, wet, left in hot vehicles. Physical life is the constraint, not performance. |
| Server | 5 years, then reassess | Warranty expiry is usually the trigger. Many businesses replacing a server would be better retiring it to cloud instead. |
These are guides, not rules. A well-specified machine doing light work often exceeds them comfortably — the questions above matter more than the age.
When an upgrade beats replacement
- A mechanical hard drive in a machine under four years old. Fitting an SSD is the single most transformative upgrade available and costs a fraction of replacement.
- Insufficient memory on an otherwise sound machine. Cheap, quick, and often the difference between frustrating and fine.
- A failed battery on a laptop you'd otherwise keep. Straightforward on business ranges, less so on consumer ones.
- Not worth it: upgrading anything past about five years, or a machine already out of operating system support. That's money spent on borrowed time.
Turning it into a schedule
The useful shift is replacing a proportion of the fleet each year rather than all of it when things start failing. For a fifteen-machine business on a five-year cycle, that's roughly three machines a year — a budget line rather than a surprise.
It costs the same money. What it removes is the unbudgeted spend at the worst moment, and someone sitting idle while it's dealt with. A fleet assessment produces the schedule — every machine listed with age, specification, warranty status and a recommendation.
Where replacement is the call, buying business-grade rather than retail matters more than the saving suggests: longer warranties, on-site service options and standardised parts. See hardware procurement and setup.
Questions Gold Coast businesses ask us
How long should a business computer last?
Typically three to five years depending on the work it does — four to five for office and admin machines, three to four for design or CAD workstations, and two to three for field laptops and tablets. The practical tests are whether it still receives operating system security updates, whether a repair would cost more than a third of replacement, and whether it will still be adequate in two years.
Is it worth upgrading an old computer instead of replacing it?
Often, up to about four years old. Fitting an SSD to a machine still running a mechanical hard drive is the single most transformative upgrade available and costs a fraction of replacement. Beyond about five years, or on a machine out of operating system support, upgrading is money spent on borrowed time.
What happens if we keep using an unsupported operating system?
It stops receiving security updates, which makes it a standing liability regardless of how well it runs. It's also increasingly a question on cyber insurance renewal forms and supplier security questionnaires, where the honest answer costs you.
How do we budget for computer replacement?
Replace a proportion of the fleet each year rather than all of it when things fail. A fifteen-machine business on a five-year cycle replaces about three a year — the same total spend, but as a budget line rather than an emergency. A fleet assessment produces the schedule.
Should we buy business-grade or consumer computers?
Business ranges for anything a person depends on. Longer warranties, on-site service options and standardised parts matter when a failure would otherwise leave someone without a machine for a fortnight. The retail saving usually disappears on the first failure.
Do we still need to replace our server?
Often not. Many businesses assuming they need a new server would be better retiring it and moving file storage and applications to cloud. That's worth assessing before quoting hardware — it's frequently the cheaper answer.
Machines starting to fail one by one?
A fleet assessment turns that into a schedule — same money, none of the surprises.