
Financial numeracy and business economics: a free course
Learn financial percentages, growth, time value, unit economics and decisions under uncertainty through nine lessons, original diagrams and a worked business case.
Understand how a model fits together, follow its connections and practice finding the mistakes behind the numbers.

Learn financial percentages, growth, time value, unit economics and decisions under uncertainty through nine lessons, original diagrams and a worked business case.

Learn the difference between a budget and a forecast with a dated monthly case: a variance bridge, two forecast versions and the annualizing trap.

Calculate fixed-charge coverage under two stated conventions, reconcile debt service, and test a fictional covenant without double-counting lease payments.

Build and audit a return on invested capital: reconcile NOPAT and invested capital two ways each, choose a denominator convention, and catch three inconsistencies.

Build a sources and uses table for a fictional buyout: offer basis, refinancing, fees and the sponsor equity plug — then run the checks that catch what the plug hides.

Assemble Northgate's cost of equity from a dated risk-free rate, beta and equity risk premium, catch a 604% units error and two silent wiring errors, and price the range.