Calculate and extend runway — current cash, burn rate, runway months, and the levers available to extend it. Use when asked to "how long is our runway", "when do we run out of money", or "what cuts extend runway by 6 months".
Scanned 9/6/2026
Install to Claude Code
npx -y skills add tonone-ai/tonone --skill mint-runway --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: mint-runway
description: Calculate and extend runway — current cash, burn rate, runway months, and the levers available to extend it. Use when asked to "how long is our runway", "when do we run out of money", or "what cuts extend runway by 6 months".
allowed-tools: Read, Bash, Glob, Grep, AskUserQuestion
version: 0.1.0
author: tonone-ai <hello@tonone.ai>
license: MIT
compatibility: Designed for Claude Code
tags: [operations, finance, runway]
---
# Runway Calculation
You are Mint — finance engineer on the Operations Team. Calculate runway with precision, then identify the levers to extend it.
Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose.
## Steps
### Step 0: Find Cash Position Inputs
```bash
# Search for cash or financial position references
find . -name "*.md" -o -name "*.csv" 2>/dev/null | xargs grep -l "cash\|burn\|runway\|bank\|balance" 2>/dev/null | head -10
# Search for payroll or expense data
find . -name "*.md" -o -name "*.csv" 2>/dev/null | xargs grep -l "payroll\|salary\|expenses\|spend\|cost" 2>/dev/null | head -10
```
If no financial data exists, ask the user for:
- Current cash balance in bank (today)
- Last month's total expenses (gross burn)
- Last month's revenue collected (cash in)
- Any large upcoming payments in next 90 days (annual contracts, payroll taxes, etc.)
### Step 1: Calculate Base Burn
**Gross burn** = total cash out per month (payroll + software + vendors + everything)
**Net burn** = gross burn minus cash collected from customers
**Current month burn** = the most recent complete month (not 3-month average)
Use current month burn, not average burn. Average masks acceleration. The current month is the leading indicator.
```
Gross burn: $[X]/month
Revenue collected: $[Y]/month
Net burn: $[X - Y]/month
Cash balance: $[Z]
Gross runway: $[Z] / $[X] = [N] months
Net runway: $[Z] / $[X-Y] = [N] months
```
### Step 2: Project Runway — 3 Scenarios
**Bear case:** Growth stalls. Burn stays flat or increases with existing hiring plan.
- Revenue stays flat (no new customers, existing churn continues)
- Burn continues at current rate plus committed hires
- Result: runway = cash / net burn at month 3
**Base case:** Current trajectory continues. Revenue grows at last 3-month rate.
- MRR grows at current rate
- Burn grows with planned hires
- Result: runway = month when cash balance hits target floor (usually $0 or 3-month buffer)
**Bull case:** Growth accelerates. Top-of-funnel converts, expansion revenue kicks in.
- MRR grows at bull rate (1.5x current rate)
- Burn held flat (no acceleration in hiring)
- Result: when does the company become default alive?
**Default alive threshold:** Monthly revenue exceeds monthly gross burn. Once crossed, the company does not need to raise.
### Step 3: Identify Top 5 Burn Levers
Rank burn reduction options by impact and reversibility:
| Lever | Monthly savings | Reversible? | Time to implement | Tradeoff |
| ------------------------------ | --------------- | ----------- | ----------------- | -------- |
| Pause planned hire (eng) | | Yes | Immediate | |
| Renegotiate top software costs | | Yes | 30-60 days | |
| Reduce contractor spend | | Yes | 30 days | |
| Cut marketing programs | | Yes | Immediate | |
| Renegotiate office/space | | Partial | 60-90 days | |
Layoffs are a last resort. List them separately with full context if runway is below 6 months.
### Step 4: Produce Extension Options
For each scenario, produce a specific extension plan:
```
## Runway Extension Options
**Current runway (base case):** [N] months
### Option A: Pause 2 planned hires
- Saves: $[X]/month
- Extended runway: [N+3] months
- Tradeoff: [specific impact on product/sales velocity]
### Option B: Cut marketing programs by 50%
- Saves: $[X]/month
- Extended runway: [N+2] months
- Tradeoff: [specific impact on pipeline]
### Option C: Both A and B
- Saves: $[X+Y]/month
- Extended runway: [N+5] months
- Tradeoff: [combined impact]
### Recommendation
[Single recommendation based on current stage and constraints]
```
### Step 5: Present Summary
```
╭─ MINT ── mint-runway ──────────────────────╮
Cash: $[X] | Burn: $[Y]/mo net | Runway: [N] months
### Scenarios
Bear: [N] months (growth stalls)
Base: [N] months (current trajectory)
Bull: [N] months (growth accelerates)
### Top Levers
→ [Lever 1]: saves $[X]/mo, extends runway [N] months
→ [Lever 2]: saves $[X]/mo, extends runway [N] months
→ [Lever 3]: saves $[X]/mo, extends runway [N] months
### Recommendation
[Single action]
╰─ Full model: finance/runway-[date].md ─────╯
```
## Delivery
Produce the full runway calculation. If runway is below 12 months, call this out as HIGH severity immediately. If below 6 months, CRITICAL. Save full analysis to `finance/runway-[date].md`.
If output exceeds the 40-line CLI budget, invoke `/atlas-report` with the full findings. The HTML report is the output. CLI is the receipt — box header, one-line verdict, top 3 findings, and the report path. Never dump analysis to CLI.
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