Skip to main content
Macro by Mark
  • Home
  • News
  • Calendar
  • Indicators
  • Macro
  • About
Sign inSign up
Macro by Mark

Global Economic Data, Empirical Models, and Macro Theory
All in One Workspace

Public data from government agencies and multilateral statistical releases, anchored in official sources

© 2026 Mark Jayson Nation

Product

  • Home
  • Indicators
  • News
  • Calendar

Macro

  • Overview
  • Models
  • Labs
  • Glossary

Learn

  • Concepts
  • Models
  • Schools
  • History
  • Docs

Account

  • Create account
  • Sign in
  • Pricing
  • Contact
AboutPrivacy PolicyTerms of ServiceTrust and securityEthics and Compliance

Theory-Based Models

Loading Theory-Based Models

Macro by Mark

Unlock Full Macro Model Library with Starter.

This feature is exclusively available to Starter, Research, and Pro. Upgrade when you need this workflow, review pricing, or send a question before changing plans.

Upgrade to StarterView pricingQuestions?Already subscribed? Sign in

What you keep on Free

  • Create and edit one custom board
  • Use up to 3 widgets on each Free board
  • Browse indicators and calendar
← ModelsOverviewHistoryConceptsModelsSchools

Harrod-Domar Growth
Model

The warranted growth rate equals the savings rate divided by the capital-output ratio: g = s/v. A higher savings rate finances faster capital accumulation, while a higher ICOR means each unit of new capital produces less additional output.

Compare

Side-by-side scenario comparison. Static equilibrium — point equilibria only.

Scenario tray

Current scenario

This is always the anchor column for the comparison view.

Presets

High saving economy

Savings rate at 30% lifts the warranted growth rate.

Inefficient capital

ICOR rises to 5, requiring more investment per unit of output growth.

Save a scenario from the Graph page in this browser to add more columns here.

Current scenario

Warranted growth

1.67

Savings rate

20.0

Capital-output ratio

3.00

Delta table

ReadoutCurrent scenario
Warranted growth
1.67
Savings rate
20.0
Capital-output ratio
3.00

Analysis notes

Back to graphOpen proof