MacroSpark Labs

Supply & Demand Simulator

Shift linear supply and demand curves to see how the equilibrium price and quantity change, and how taxes or price controls create surplus or shortage.

Demand intercept "a"

120

Demand slope "b"

Supply intercept "c"

Supply slope "d"

Per-unit tax

₹

This is a simplified educational model using illustrative elasticities/multipliers, not an official RBI/government forecasting model — figures are computed live from your inputs but should not be used for real policy decisions. Demand is modeled as Qd = a − b·P and supply as Qs = c + d·P; a per-unit tax shifts the effective supply curve by requiring producers to receive P − t for the same quantity supplied.

Equilibrium Price₹22

Equilibrium Quantity

76.0

Tax Revenue

—

Deadweight Loss

—

Supply & Demand Curves

Demand (Qd)Supply (Qs)

X-axis represents price (₹); Y-axis represents quantity. The curves cross at the equilibrium point.