Ib Economics Hl Formula Booklet < PROVEN CHECKLIST >

This is the single most tested formula in the HL booklet. $$ Multiplier (k) = \frac11 - MPC $$ Or using the leakages approach: $$ Multiplier = \frac1MPS + MPT + MPM $$

Real IB Exam Question Example: "If the MPC is 0.8 and the government increases spending by $10 million, calculate the total increase in national income."

HL Twist: You must also calculate the tax multiplier: $$ Tax\ Multiplier = \frac-MPC1 - MPC $$ The booklet includes this. A $10 million tax cut with an MPC of 0.8 yields $40 million (significantly less than government spending). ib economics hl formula booklet

The IB Economics Formula Booklet is generally segmented by the four core units of the syllabus:

For an HL student, the primary focus for calculation questions resides in Microeconomics (Elasticities and Costs) and Macroeconomics (Keynesian Multiplier and Terms of Trade). This is the single most tested formula in the HL booklet

Formulas:

Deep Dive & Exam Logic:

Despite having the formulas, students consistently lose marks in three specific areas:

HL students must master short-run and long-run cost curves. The booklet provides: HL Twist: You must also calculate the tax

The Common Mistake: Students forget that the booklet does not calculate these for you. In Paper 3, you will get a table of Total Product (TP) and Total Cost (TC). You must use the formulas to fill in the blanks. Practice transferring data from the exam script to the formula.