Economics

A guide to the fiscal multiplier effect — the spending multiplier formula, tax multiplier, real-world examples from ARRA 2009 and CARES Act 2020, and why actual multipliers differ from their theoretical values.

Learn how adaptive and rational inflation expectations differ, how they shift the Phillips curve, and why central bank credibility is critical to anchoring expectations.

Automatic stabilizers are built-in fiscal mechanisms — like the progressive tax system and unemployment insurance — that automatically cushion economic downturns without new legislation. Learn how they work, how they compare to discretionary fiscal policy, and where they fall short.

Understand the difference between the budget deficit and national debt. Covers debt-to-GDP, debt dynamics, historical U.S. debt trends, and fiscal sustainability.

Learn the four stages of the business cycle — expansion, peak, contraction, and trough — how the NBER officially dates recessions, and what the 2007-2009 Great Recession looked like from start to finish.

The real exchange rate measures the relative price of domestic goods in terms of foreign goods. Learn the RER formula, how appreciation and depreciation affect trade, and the macro forces that determine exchange rates.

Learn how the trade balance, balance of payments, and capital flows are connected. Covers net exports, the NX = NCO identity, the saving-investment identity, twin deficits, capital flight, and real-world U.S. trade data.

Learn the difference between real and nominal GDP, how the GDP deflator works, why the BEA uses chain weighting, and how to avoid common analytical mistakes when measuring economic growth.

The crowding out effect explains how government borrowing raises interest rates and displaces private investment, reducing the net impact of deficit spending on the economy.

The loanable funds market explains how saving and investment interact to determine the real interest rate. Learn the S = I identity, supply and demand for funds, budget deficit effects, and how the model compares to the money market.