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Network ROI Calculator

Measure return on a network investment: net benefit, ROI percentage, payback period and annualised return.

About Network ROI Calculator

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

Worked example

With the default values below, Network ROI Calculator returns Return on Investment of 94.0%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Upfront investmentaccepts 1–1,000,000,000 currency
250,000 currency
Annual operational savingsaccepts 0–1,000,000,000 currency
70,000 currency
Annual downtime cost avoidedaccepts 0–1,000,000,000 currency
45,000 currency
Additional annual running costaccepts 0–1,000,000,000 currency
18,000 currency
Evaluation periodaccepts 1–30 years
5 years

Results

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%

Step by step

  1. 1Values used
  2. 2Network ROI
  3. 3Return on Investment= 94.0
  4. 4Net Benefit Over the Period= 235,000
  5. 5Payback Period= 2.58 years
  6. 6Net Benefit per Year= 97,000
  7. 7Annualised Return= 18.8

Assumptions and limits

  • The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation or tax into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

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.

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Network ROI Calculator – Calculate Return on Investment