How Do Domestic Production Subsidies Work?
A domestic production subsidy is a payment for each eligible unit made at home. In the small importing-country model, foreign supply remains available at the world price, Pw. Consumers can still buy at Pw, so the subsidy need not raise their price.
Builds on: How Do Import Quotas Work?
What you will learn
- A subsidy on all domestic output can expand production while buyers keep paying the world price.
- Separate consumer prices, producer receipts and government cost
Essential definitions
- Production subsidy
- A payment for each eligible unit produced domestically.
- Producer receipts per unit
- The market price plus any production subsidy received per unit.
- Producer subsidy
- A payment supporting domestic production, with the payment basis specified.
Separate the buyer's price from producer receipts
A domestic production subsidy is a payment for each eligible unit made at home. In the small importing-country model, foreign supply remains available at the world price, Pw. Consumers can still buy at Pw, so the subsidy need not raise their price.
With Pw of 20 dollars and a subsidy of 5 per unit, domestic firms receive 25 in total: 20 from the buyer and 5 from government. More production becomes profitable. Domestic output rises, consumption stays unchanged at the unchanged price, and imports fall by the extra domestic output.
Read the curve and the public cost
The diagram has price per unit vertically and quantity per period horizontally. D is domestic demand and S original supply. The subsidy shifts effective supply down by 5: firms need 5 less from buyers for any output. At Pw, read new domestic output from shifted supply. Original supply at that quantity shows total producer receipts.
Government cost = subsidy per unit × all eligible output. If output rises from 40 to 50 thousand units per month, cost is 5 × 50 = 250 thousand dollars per month. It is not 5 times only the additional 10 thousand. The shaded production-loss triangle shows extra units costing more resources than imports. There is no lost-consumption triangle because buyers' price and quantity are unchanged. An identified external benefit could change that judgement; it should not be assumed merely because output is domestic.
Calculate the payment base
- At Pw = 20, firms supply 40 thousand units.
- A subsidy of 5 raises producer receipts to 25 and output to 50 thousand; consumption stays at 80 thousand.
- Government cost = 5 × 50 = 250 thousand dollars; imports fall to 80 − 50 = 30 thousand units.
Apply the subsidy to all 50 thousand eligible units, not just the extra 10 thousand.
Domestic production subsidy in an importing economy
The subsidy shifts effective supply down. Consumers still pay Pw while producers receive Pw + subsidy. Output rises and imports fall. Government pays the shaded rectangle; the extra-production triangle is the net loss.
How to read this diagram
- Put price vertically and quantity per month horizontally. Draw D, S and Pw; the consumer-market equilibrium E is where D meets Pw.
- Shift S down by the unit subsidy.
- At Pw read subsidized output; at that quantity mark producer receipts Pw + subsidy on original S.
Blue: policy revenue, rent or fiscal cost. Orange: efficiency loss. D: Qd = 120 − 2P. S: Qs = 2P. Values are illustrative; calculations are HL.
- Consumer price / producer receipts
- 20 / 25 dollars per unit
- Domestic output / consumption
- 50 / 80 thousand units
- Imports
- 30 thousand units
- Government net revenue (negative = cost)
- -250 thousand dollars
- Efficiency loss
- 25 thousand dollars
On a small screen, scroll the graph horizontally to read all labels.
Assumptions and limits: Subsidy paid on all domestic output; positive imports; fixed world price. Numerical welfare calculations are HL.
Apply and evaluate
- State the assumptions before applying the example to another economy.
Common misconceptions
- A production subsidy is paid on domestic output; an export subsidy is paid on exports.
Knowledge check
Why can consumers still pay the world price after this subsidy?
What to remember
A subsidy on all domestic output can expand production while buyers keep paying the world price. Government pays on every eligible unit, including output firms would have supplied anyway.
Completion records your reflection, not a test score.
Lessons in this section
Guest progress is saved on this browser. Log in to save across devices; import is optional.