Network ROI Calculator
Measure return on a network investment: net benefit, ROI percentage, payback period and annualised return.
Inputs
Return on Investment
94.0%
Net Benefit Over the Period
$235,000
Payback Period
2.58years
Net Benefit per Year
$97,000
Annualised Return
18.8%
Step by step
Values used
Upfront investment = 250,000 currency; Annual operational savings = 70,000 currency; Annual downtime cost avoided = 45,000 currency; Additional annual running cost = 18,000 currency; Evaluation period = 5 years
Network ROI
ROI = (total benefit − investment) ÷ investment × 100; payback = investment ÷ net annual benefit.
Return on Investment
= 94.0
Net Benefit Over the Period
= 235,000
Payback Period
= 2.58 years
Net Benefit per Year
= 97,000
Annualised Return
= 18.8
How it works
Avoided downtime is counted as a benefit alongside direct savings, because for network projects it is often the larger of the two. Subtracting the new running cost first keeps the payback figure honest — an investment that adds support contracts and licences has a longer payback than the headline savings suggest. Network upgrades compete for capital against revenue projects, and payback in years is the comparison a finance committee will actually make.
Formula
Network ROI
ROI = (total benefit − investment) ÷ investment × 100; payback = investment ÷ net annual benefit.
- net annual benefit
- Savings plus avoided downtime cost minus new running cost
- payback
- Years before the investment is recovered
Frequently Asked Questions
How is Network ROI calculated?
ROI = (total benefit − investment) ÷ investment × 100; payback = investment ÷ net annual benefit. Avoided downtime is counted as a benefit alongside direct savings, because for network projects it is often the larger of the two. Subtracting the new running cost first keeps the payback figure honest — an investment that adds support contracts and licences has a longer payback than the headline savings suggest.
Why does Network ROI matter?
Network upgrades compete for capital against revenue projects, and payback in years is the comparison a finance committee will actually make.
What values do I need to enter?
This calculator takes 5 inputs: Upfront investment, Annual operational savings, Annual downtime cost avoided, Additional annual running cost, Evaluation period. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.
You might also need
- Network TCO CalculatorCommonly used together
- Capacity Exhaustion CalculatorCommonly used together
- Network Cost EstimatorCommonly used together
- Network Carbon Emission CalculatorAlso in Network Operations
- Switch Power Consumption CalculatorAlso in Network Operations
- Power over Ethernet (PoE) Budget CalculatorAlso in Network Operations