Source: https://guthlabs.ai/docs/instrument-workflows/startup-econ/

instrument kit / verified-workflow-definition

# Startup Unit Economics

Is the machine working: acquisition, retention, margin, runway.

Status: **observed**Lifecycle: **verified-workflow-definition**

## Goal

Is the machine working: acquisition, retention, margin, runway.

## Instrument chain

- 01

**[LTV / CAC / Payback Unit Economics](<https://guthlabs.ai/docs/instruments/ltv-cac-payback-unit-economics/>)**

core ratios

VERIFIED

- 02

**[MRR/ARR & Churn Tracker](<https://guthlabs.ai/docs/instruments/mrr-arr-churn-tracker/>)**

retention

VERIFIED

- 03

**[Burn Rate & Runway Calculator](<https://guthlabs.ai/docs/instruments/burn-rate-runway-calculator/>)**

survival

VERIFIED

- 04

**[Break-Even Units Calculator](<https://guthlabs.ai/docs/instruments/break-even-units-calculator/>)**

volume

VERIFIED

- 05

**[Margin vs Markup Converter](<https://guthlabs.ai/docs/instruments/margin-vs-markup-converter/>)**

pricing literacy

VERIFIED

- 06

**[Pricing/Discount & Markdown Calculator](<https://guthlabs.ai/docs/instruments/pricing-discount-markdown-calculator/>)**

promos

VERIFIED

- 07

**[EOQ / Inventory Reorder Calculator](<https://guthlabs.ai/docs/instruments/eoq-inventory-reorder-calculator/>)**

ops

VERIFIED

## Handoffs and cross-checks

ARPU/margin/churn feed LTV; churn signs matter (t4-292 failure mode).

## PointGuard stance

State churn sign convention before computing; a net-negative churn (expansion > churn) must be reported as growth, not loss.

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `INSTRUMENT_COMBOS.json`

- `VERIFIED_LEDGER.json`