IT BUSINESS CASE AND BENEFITS WORKSHEET
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Use one common horizon and currency for all options. Record sources and dates.
This editable text aid contains explicit formulas, not an automatic calculator.

DECISION
Problem / business owner / decision date:
Baseline period, workload, quality and data collection method:
Options: current approach / process improvement / technology change:
For each: initial cost / annual operating cost / transition and exit cost:
Cash benefits with budget evidence:
Capacity benefits in hours and intended use:
Risk, quality and service outcomes with evidence:
Dependencies, uncertainty and assumptions requiring a pilot:

CHECKED FICTIONAL EXAMPLE (USD; one year; no discounting)
Eligible requests per month = 600
Minutes saved per adopted request = 6
Illustrative labor value per hour = 40
One-time implementation cost = 6000
Monthly operating cost = 600
First-year cost = 6000 + 12 * 600 = 13200
Hours released per month = requests * adoption fraction * minutes saved / 60
Annual capacity value = hours per month * 12 * labor value per hour
Difference = annual capacity value - first-year cost
Adoption 0.40: 24 hours/month; 11520 annual value; -1680 difference
Adoption 0.60: 36 hours/month; 17280 annual value;  4080 difference
Adoption 0.80: 48 hours/month; 23040 annual value;  9840 difference
Capacity value is NOT cash savings. Count actual spending reductions separately
and prevent double counting. Assumes 12 months steady use with no ramp-up,
unchanged volume and quality, and no additional savings or revenue.
Change volume, adoption, time saving and cost to explore uncertainty.
For multiple years use your organization's approved cash-flow/discount method.

BENEFIT REGISTER (duplicate for each benefit)
Benefit / type / baseline / forecast / unit / source:
Owner / operational change needed / dependency:
Review date / observed value / workload or quality changes:
Decision: continue / revise / expand / stop; rationale:
Pilot go/revise/stop criteria and decision date:
Source context: the UK Treasury Green Book is a public-sector appraisal reference;
this business worksheet is an original illustrative aid, not a mandated method.