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How often should a business replace its computers? Every 3 to 5 years, and here is why
An old computer does not just run slow. It quietly costs you paid hours, blocks the newest security features, uses more power and wears on the people stuck using it. Here is the real math, the security reasons and a simple way to budget so replacements never become a surprise.
The short version
- Industry standard: plan to replace business computers every 3 to 5 years (laptops 3 to 4, desktops 4 to 5).
- 10 minutes a day of waiting costs about $1,250 per employee per year at $30 an hour with benefits.
- Windows 10 support ended October 14, 2025. Windows 11 requires TPM 2.0 security hardware that many older PCs do not have.
- ENERGY STAR certified computers use 25 to 40 percent less energy than standard models.
- Budget a rolling plan: replace about a quarter to a third of your computers each year.
- The 3 to 5 years applies to business-class computers. Low cost home models often use older processors and may last about 2 years in an office.
The 3 to 5 year rule
IT providers, universities and manufacturers land on the same window: business computers should be replaced every three to five years. Laptops wear faster because of heat, travel and batteries, so plan three to four years. Desktops can usually go four to five. Gartner estimates the average enterprise laptop lasts about 3.7 years and a desktop about 4.6 years.
A simple rule many IT providers use: start the conversation at year 3, put it in the budget at year 4, and replace at year 5. After 5 years, repairs, slowdowns and security gaps usually cost more than the computer is worth.
The 3 to 5 years only applies to business-class computers
The 3 to 5 year life is a general rule for business-class computers: models built for a full work day, with current processors, solid state drives, 16 GB of memory, Windows 11 Pro and longer warranties. Home and low cost computers are built to a price, not a work day. In an office they often last about 2 years, and some are not powerful enough for business software even when new.
A low price often means older technology
To hit a low price, makers often use processors and motherboards from last year, the year before or older. That computer starts life partway through its support window, with fewer years of firmware, driver and security updates ahead of it, and it is already slower than current models on day one.
| Business-class model | Low cost home model | |
|---|---|---|
| Processor | Current or one generation back | Often one to three generations old |
| Memory | 16 GB | 8 GB or less |
| Storage | 512 GB NVMe solid state drive | Small or slow storage |
| Windows | Windows 11 Pro | Windows 11 Home |
| Warranty | 3 to 5 years available | Usually 1 year |
| Useful life in an office | 4 to 5 years | About 2 years |
Read more: the hidden cost of cheap computers.
What we recommend at minimum
- Business-class model from a major manufacturer
- Current or one generation back processor
- 16 GB of memory and a 512 GB NVMe solid state drive
- Windows 11 Pro
- ENERGY STAR certified
- 3 year warranty or longer
What a slow computer really costs you
You pay people by the hour. When they wait on a spinning wheel, you are paying for nothing. An Oxford Economics study of nearly 3,000 workers found almost half lose about 10 percent of the workday, around 48 minutes, to slow technology.
Even a small delay adds up fast. At $25 an hour plus 20 percent for benefits, 10 minutes a day is about $1,250 a year per employee. At 40 minutes a day, it is over $4,000 a year for one person, several times the price of a new business PC.
Slow computer cost calculator
Security is now built into the hardware
Modern security does not run on software alone. Windows 11 requires a TPM 2.0 security chip, and Microsoft has said that requirement is non-negotiable because it supports Windows Hello sign-in, BitLocker drive encryption and Credential Guard. Many older computers do not have it, so they cannot run a supported version of Windows.
Windows 10 reached end of support on October 14, 2025. Those computers still turn on, but Microsoft no longer sends free security fixes. Extended Security Updates are a paid, temporary bridge, not a plan. See our guide on outdated and unlicensed software.
Less power, less heat
Newer computers do the same work with far less electricity. ENERGY STAR certified computers use 25 to 40 percent less energy on average than standard models, and the EPA has estimated certified desktops use about half the energy of standard desktops. Less heat also means quieter offices and longer component life.
Your people notice
Slow technology is a daily frustration. In one workplace study, a third of employees said they lose motivation waiting on slow technology, 28 percent worked extra hours to make up the time, and 1 in 10 said tech hold-ups made them want to quit. Respecting your team's time is part of keeping good people.
Warranty, repairs and downtime
Business-class computers usually carry 3 to 5 year warranties. Once the warranty ends, every failure is a surprise bill and a person who cannot work. Hard drives, fans, batteries and motherboards wear out on a predictable curve, which is exactly why a predictable replacement plan works.
How to budget it so it is never a surprise
Instead of replacing every computer at once every five years, spread it out. With a 4 year cycle, replace about a quarter of your computers each year. Your technology budget stays nearly flat and no one is stuck on a 7 year old machine.
| Computers | Cycle | Replace per year |
|---|---|---|
| 5 | 4 years | 1 or 2 |
| 10 | 4 years | 2 or 3 |
| 25 | 4 years | 6 or 7 |
| 50 | 5 years | 10 |
Signs it is time now
- It is more than 5 years old or cannot run Windows 11
- It takes minutes to start or open common programs
- The fan runs loud or the laptop battery dies quickly
- It is out of warranty and has needed repairs
- The employee using it works around it every day
Related guides
Sources
- IT asset refresh cycle guidance (Centrexit)
- Laptop lifespan and Gartner estimate (Allwhere)
- Replacement budgeting guidance (DPC Technology)
- The cost of your slow work computer, Oxford Economics study (Industrial Distribution)
- Lost productivity math (xSolutions)
- Outdated technology and employee morale (Workplace Insight)
- Windows 11 TPM 2.0 requirement (Windows Central)
- Windows 10 end of support (HP)
- ENERGY STAR computers (Natural Resources Canada)
- ENERGY STAR Computers Version 8.0 (EPA)
This guide is general information for business owners, not legal advice. Laws change; confirm your specific obligations with your attorney, compliance officer or diocese. Last reviewed November 2026.