Ib Economics Hl Formula Booklet Repack Jun 2026

ΔTΔYthe fraction with numerator cap delta cap T and denominator cap delta cap Y end-fraction

If you need help with specific practice problems, let me know: Which are you practicing? (Micro, Macro, or Global?)

You can’t walk into the exam without mastering these. Remember, for HL, you need to know the difference between the and the point method if specified. PED/YED/XED/PES:

"Current Account + Capital Account = 0 (ignoring errors/omissions)." If a country has a current account deficit, it must have a capital account surplus (borrowing from abroad).

Incidenceconsumer=(Pconsumer−P*)×QtaxIncidence sub consumer end-sub equals open paren cap P sub consumer end-sub minus cap P raised to the * power close paren cross cap Q sub tax end-sub ib economics hl formula booklet repack

The TOT measures the purchasing power of a country's exports relative to its imports.

"Elastic escapes, inelastic inherits."

[ \textCurrent Account = (X - M) + \textNet Income + \textNet Transfers ] [ \textCapital & Financial Account = \textFDI + \textPortfolio Investment + \textReserve assets ]

No explicit formula, but the repack includes a : Short-run Phillips curve shows inverse relationship between inflation and unemployment. Long-run Phillips curve is vertical at the Natural Rate of Unemployment (NRU). ΔTΔYthe fraction with numerator cap delta cap T

"The more leakages (S, T, M), the smaller the multiplier."

ΔSΔYthe fraction with numerator cap delta cap S and denominator cap delta cap Y end-fraction

Subsidy Cost=Subsidy per Unit×New Quantity Traded (Qsub)Subsidy Cost equals Subsidy per Unit cross New Quantity Traded open paren cap Q sub s u b end-sub close paren 3. Theory of the Firm (HL Only)

Double-check whether an answer requires a negative sign (like PED) or a positive sign (like XED for substitutes). PED/YED/XED/PES: "Current Account + Capital Account = 0

Paper 3 is entirely dedicated to quantitative methods. Beyond the formulas, you must know how to manipulate linear equations. Linear Demand and Supply Functions

Unemployment Rate=Number of UnemployedTotal Labor Force×100Unemployment Rate equals the fraction with numerator Number of Unemployed and denominator Total Labor Force end-fraction cross 100 (Note: Labor Force = Employed + Unemployed) Keynesian Multiplier (HL Only)

PES=%ΔQs%ΔPPES equals the fraction with numerator % cap delta cap Q sub s and denominator % cap delta cap P end-fraction Always positive due to the law of supply. : Inelastic Government Intervention Calculations