ROI Calculator

When to Use This Skill

Use this skill when you need to:

• Calculate the return on investment for a business decision
• Compare multiple investment options using the same framework
• Determine payback period for a new tool, hire, or initiative
• Build a business case with financial justification

DO NOT use this skill for stock market ROI, personal investment analysis, or general financial modeling. This is for operational business investment decisions.

Core Principle

ROI IS A DECISION TOOL — THE GOAL IS NOT PRECISION BUT CLARITY ON WHETHER AN INVESTMENT IS WORTH MAKING AND HOW LONG UNTIL IT PAYS FOR ITSELF.

Phase 1: Investment Context

Required Inputs

GATE: Do not proceed without the investment cost and expected benefits.

Phase 2: Cost Analysis

## Investment Cost Breakdown

### Upfront Costs
| Item | Cost | Notes |
|------|------|-------|
| [Purchase/setup fee] | $[X] | One-time |
| [Implementation/training] | $[X] | One-time |
| [Migration/switching costs] | $[X] | One-time |
| **Total Upfront** | **$[X]** | |

### Ongoing Costs (Monthly)
| Item | Monthly Cost | Annual Cost |
|------|-------------|-------------|
| [Subscription/license] | $[X] | $[X] |
| [Maintenance/support] | $[X] | $[X] |
| [Additional labor] | $[X] | $[X] |
| **Total Monthly** | **$[X]** | **$[X]** |

### Total Cost of Ownership ([X]-Month Horizon)
| | Amount |
|--|--------|
| Upfront costs | $[X] |
| + Ongoing costs ([X] months) | $[X] |
| **= Total investment** | **$[X]** |

Phase 3: Benefit Quantification

## Benefit Analysis

### Revenue Benefits
| Benefit | Monthly Value | Annual Value | Confidence |
|---------|-------------|-------------|------------|
| [New revenue enabled] | $[X] | $[X] | High/Med/Low |
| [Revenue increase from efficiency] | $[X] | $[X] | High/Med/Low |

### Cost Savings
| Benefit | Monthly Savings | Annual Savings | Confidence |
|---------|----------------|----------------|------------|
| [Tool/service replaced] | $[X] | $[X] | High |
| [Reduced labor costs] | $[X] | $[X] | Med |

### Time Savings
| Task | Hours Saved/Month | Value (hrs x rate) | Annual Value |
|------|------------------|-------------------|-------------|
| [Task 1] | [X] hrs | $[X] | $[X] |
| [Task 2] | [X] hrs | $[X] | $[X] |

### Total Benefits
| Category | Monthly | Annual |
|----------|---------|--------|
| Revenue benefits | $[X] | $[X] |
| Cost savings | $[X] | $[X] |
| Time savings value | $[X] | $[X] |
| **Total benefits** | **$[X]** | **$[X]** |

Phase 4: ROI Calculation and Decision

## ROI Summary

### Core Metrics
| Metric | Value |
|--------|-------|
| Total investment ([X] months) | $[X] |
| Total benefits ([X] months) | $[X] |
| Net return | $[X] |
| **ROI percentage** | **[X]%** |
| Payback period | [X] months |
| Monthly net benefit (after payback) | $[X] |

### ROI Formula
ROI = (Total Benefits - Total Investment) / Total Investment x 100

### Payback Timeline
| Month | Cumulative Cost | Cumulative Benefit | Net Position |
|-------|----------------|-------------------|-------------|
| Month 1 | $[X] | $[X] | -$[X] |
| Month 3 | $[X] | $[X] | -$[X] |
| Month 6 | $[X] | $[X] | +/-$[X] |
| Month 12 | $[X] | $[X] | +$[X] |

### Decision Framework
| ROI Range | Recommendation |
|-----------|---------------|
| Over 200% | Strong yes — invest immediately |
| 100-200% | Yes — solid return, proceed |
| 50-100% | Likely yes — if strategic alignment exists |
| 0-50% | Maybe — consider alternatives |
| Negative | No — unless intangible benefits justify it |

### Recommendation
[Clear recommendation based on the numbers with key caveats]

Example: Hiring a Virtual Assistant

Investment: $2,000/month ($24,000/year). Benefits: Saves founder 40 hours/month of admin work valued at $100/hr = $4,000/month in time recaptured. Plus $500/month in tasks done better (inbox management reducing missed opportunities).

ROI: ($54,000 - $24,000) / $24,000 = 125% annual ROI. Payback: Immediate — net positive from month 1.

Anti-Patterns

• Only counting hard dollar returns — time savings and opportunity cost are real benefits. Quantify them.
• Ignoring switching costs — migration, training, and lost productivity during transition are real costs
• Overconfident benefit projections — use conservative estimates. If ROI works on conservative numbers, it definitely works in practice.
• Comparing against doing nothing — sometimes the alternative is not "do nothing" but "do something different." Compare against the best alternative.
• Infinite time horizon — always set a defined time period. An investment that takes 5 years to pay back on a tool you may replace in 2 years is a bad deal.

Recovery

• Benefits are hard to quantify: Assign a conservative dollar value to intangible benefits. "Better client experience" = reduced churn = $X retained revenue.
• Multiple options to compare: Build a side-by-side comparison table with ROI for each option. Recommend the highest ROI with acceptable risk.
• ROI is negative but feels necessary: Identify the minimum benefit needed to break even and assess whether that is achievable. Some investments are strategic even with negative short-term ROI.
• No baseline data: Estimate the current cost of the problem being solved. Track for 2-4 weeks if possible before making the investment.