Tax Incidence and Elasticity: Who Really Pays? | Economics Explained

Price elasticity of demand measures how responsive consumers are to price changes, calculated by comparing the percentage change in quantity demanded to the percentage change in price; when quantity demanded changes more than proportionally to price (e.g., 20% decrease when price increases 10%), demand is elastic, while when quantity changes less than proportionally (e.g., 5% decrease when price increases 10%), demand is inelastic, and when both change by the same percentage, demand is unit elastic.

Price elasticity of demand measures consumer responsiveness to price changes, with demand curves negatively sloped (price and quantity move oppositely). Calculation: percentage change in quantity demanded ÷ percentage change in price. Always negative, so absolute value is used for classification: >1 (elastic), <1 (inelastic), =0 (perfectly inelastic), =∞ (perfectly elastic). Cross-price elasticity measures how one good's demand responds to another's price: positive = substitutes, negative = complements.

Price elasticity of demand measures how demand responds to price changes. The formula is: percentage change in quantity divided by percentage change in price. For example, if quantity decreased by 20% and price increased by 50%, the elasticity is -0.2 ÷ 0.5 = -0.4. Take the absolute value to interpret: less than 1 means inelastic demand, equal to 1 means unit elastic, greater than 1 means elastic demand. Cross-price elasticity measures the relationship between two different products. A positive result indicates complementary goods (consumers substitute one for the other), while a negative result indicates substitute goods.

Price elasticity of demand measures how much the quantity demanded changes in response to a price change. It indicates whether consumers significantly alter their buying behavior when prices rise or fall. For example, if a smartphone's price increases by 10% and demand drops by 20%, demand is elastic, showing consumers are sensitive to price changes. Conversely, if a 10% price increase for a life-saving drug results in only a 2% drop in demand, demand is inelastic, meaning consumers continue buying despite higher prices due to its essential nature.

Price elasticity of demand measures responsiveness of quantity demanded to price changes. Formula: EP = (ΔQ/Q) / (ΔP/P). Classification: (1) Elastic demand (EP > 1) when quantity responds more than proportionally, (2) Inelastic demand (EP < 1) when quantity responds less than proportionally, (3) Unit elastic demand (EP = 1) when percentage changes are equal, (4) Zero elasticity (EP = 0) for unrelated goods like shoes and bread. Cross-price elasticity measures how demand for one good responds to price changes in another good. When price of one good decreases and demand for another decreases, goods are complementary. When price of one good increases and demand for another increases, goods are substitutes.

Price elasticity of supply measures the responsiveness of quantity supplied to changes in price. It is calculated as the percentage change in quantity supplied divided by the percentage change in price. If elasticity is greater than 1, supply is elastic (quantity supplied responds significantly to price changes). If elasticity is less than 1, supply is inelastic (quantity supplied responds minimally to price changes). If elasticity equals 1, supply is unit elastic. This helps producers understand how changes in market prices will affect their ability to adjust production levels.

Price Elasticity of Supply measures the responsiveness of quantity supplied to changes in price. It is calculated as the percentage change in quantity supplied divided by the percentage change in price. It indicates how sensitive producers are to price changes for a particular good.

Price elasticity of supply measures a producer's flexibility in responding to market price changes. It asks how much a producer can adjust their output when market prices change. The calculation uses hypothetical scenarios: if the market price were X, how much would you produce? If the market price were Y, how much would you produce? This helps determine how adaptable production is to price fluctuations.

Price Elasticity of Supply measures how responsive the quantity supplied of a good is to changes in its price. The instructor explains that when price increases, producers typically supply more to maximize profits, and when price decreases, they supply less. This concept helps understand producer behavior and market supply dynamics.

Price elasticity of supply measures how responsive quantity supplied is to price changes. Types include: perfectly inelastic (elasticity=0, quantity doesn't change), inelastic (quantity changes less than proportionally), unit elastic (proportional changes), elastic (quantity changes more than proportionally), and perfectly elastic (any quantity at given price). This helps understand producer flexibility in different markets.

The statutory tax burden identifies who writes the check to the government, while the economic tax burden identifies whose utility is reduced by the tax. Governments often claim the statutory taxpayer bears the burden, but economists analyze who actually suffers. The key principle is that the economic burden falls on the party with more inelastic supply or demand—the one whose behavior is hardest to change. This distinction matters because a tax on wealthy yacht owners may actually harm blue-collar workers who manufacture yachts, as these workers have less ability to adapt to tax-induced changes in their market.

Tax incidence distinguishes between legal taxpayers (named on tax notices) and economic taxpayers (who actually bear the burden). Using a pizza tax example, when a 1,000 yuan tax is imposed on sellers, the market naturally shares the burden: consumers pay 500 yuan more while sellers receive 500 yuan less. The total burden is shared regardless of who is legally required to pay. This demonstrates that legal assignment of tax liability does not determine who ultimately bears the economic cost.

Tax incidence analyzes how tax policies affect prices and distribute economic burdens across market participants, distinguishing between statutory incidence (who legally pays the tax) and economic incidence (who ultimately bears the burden through price adjustments). In partial equilibrium analysis, the distribution depends on the relative elasticities of supply and demand—more elastic factors bear less of the tax burden. However, behavioral evidence shows people often don't notice or respond to taxes when they're not visible in posted prices, meaning the traditional neoclassical model may underestimate how tax salience affects actual economic outcomes.

Tax incidence refers to who ultimately bears the burden of a tax. While laws specify who pays (statutory incidence), economic burden is shared between buyers and sellers based on elasticities. The party with less elastic supply or demand bears a larger share because they have fewer alternatives. The tax wedge (difference between what buyers pay and sellers receive) equals the tax amount. This distribution depends on how responsive buyers and sellers are to price changes.

Tax incidence refers to how the economic burden of taxation is distributed between buyers and sellers in a market. Statutory incidence indicates which party is legally required to pay the tax, while economic incidence reveals who ultimately bears the cost. The distribution depends on price elasticity: parties with inelastic demand or supply bear more of the tax burden, while those with elastic demand or supply can shift the burden. When demand is perfectly inelastic (like cigarettes), consumers bear the entire tax burden regardless of whether the tax is imposed on sellers or buyers.