Rent: the Ricardian theory and quasi-rent

1. Meaning of rent

In ordinary speech, rent is any periodic payment for the use of land, a house or a machine. This is contract (gross) rent: it includes interest on capital invested in the land (fencing, wells), payment for management, and the pure payment for land itself. Economic rent is only the last element: the payment for the use of land as a free gift of nature. The economist’s theory of rent explains economic rent.

2. Ricardo’s definition

David Ricardo, in On the Principles of Political Economy and Taxation (1817), defined rent as “that portion of the produce of the earth which is paid to the landlord for the use of the original and indestructible powers of the soil.” Rent is a differential surplus: it arises because plots of land differ in fertility and situation, and the price of corn is set by the cost on the least fertile land in use.

Assumptions.

• Land has original and indestructible powers.
• Land differs in fertility and situation.
• The law of diminishing returns operates in agriculture.
• Land is cultivated in descending order of fertility, the best first.
• There is a marginal (no-rent) land whose produce just covers the cost of cultivation.
• Perfect competition; land has only one use (growing corn); the long run.

3. Rent under extensive cultivation

Ricardo illustrated the theory with settlers arriving in a new country. At first only the most fertile land (grade A) is cultivated, and there is no rent because land is plentiful. As population grows and demand for corn rises, grade B is cultivated; A then earns a rent equal to the difference in output. Then C and D, and so on.

Worked table. The same expenditure of Rs. 1,000 on labour and capital is applied to each acre. Grade D is the marginal land. The price of corn must cover the cost on D: Rs. 1,000 ÷ 10 quintals = Rs. 100 per quintal.

Rent on each grade = its output − output of the marginal land. If demand rises further and grade E (yielding 5 quintals) is brought in, the price rises to Rs. 200 per quintal, D begins to earn rent, and the rent on every other grade rises.

Diagram (described). Grades of land on the horizontal axis and output per acre on the vertical, as a series of bars falling from A to D. A horizontal line at the height of D’s output (the cost line) cuts every bar; the part of each bar above the line is rent, and D has none.

4. Rent under intensive cultivation

Instead of cultivating new land, the farmer may apply more doses of labour and capital to the same land. Because of diminishing returns, each dose yields less.

The 4th dose just covers its cost and is the marginal dose. The surplus of earlier doses over it, 60 quintals, is the rent of this land.

Situation rent. Rent also arises from location: land near a market or a railway saves transport cost and earns rent over equally fertile but distant land.

5. Rent does not enter price

Since price is set by the cost on no-rent marginal land, rent is not a part of cost that determines price; it is a result of price. Ricardo: “Corn is not high because a rent is paid, but a rent is paid because corn is high.” A high price of corn (due to high demand) pushes cultivation to poorer land, and that raises rent on better land. This also implied, for Ricardo, that landlords gain from population growth without effort, which supported his argument against the Corn Laws.

6. Criticism

1. No “original and indestructible powers”. Fertility can be exhausted by over-cultivation and created by manure, irrigation and science.
2. The historical order of cultivation is wrong. H.C. Carey showed that settlers often cultivated less fertile but more accessible land first, and situation matters as much as fertility.
3. No-rent land is unreal. In a settled country nearly all land earns some rent; Ricardo’s theory needs no marginal land, but his illustration did.
4. Rent can enter price. From the point of view of an individual farmer or of one use, land has alternative uses, and rent must be paid to keep it in a particular use, so it is part of cost (the opportunity-cost view).
5. Scarcity rent is ignored. Even if all land were equally fertile, rent would arise when land is scarce relative to demand.
6. Rent is not peculiar to land. Any factor in inelastic supply earns a surplus (the rent of ability of a singer, quasi-rent of machines).
7. Perfect competition and the long run are unrealistic assumptions.
8. Diminishing returns can be postponed by technical progress.

Modern theory. Economic rent is the surplus a factor earns over its transfer earnings (the minimum it must be paid to stay in its present use, equal to what it could earn in its next best use). Rent = actual earnings − transfer earnings. It applies to every factor whose supply is less than perfectly elastic. If supply is perfectly inelastic, all earnings are rent; if perfectly elastic, none is.

7. Quasi-rent

Alfred Marshall introduced quasi-rent for the earnings of man-made appliances (machines, buildings) whose supply is fixed in the short run. If demand for a product rises suddenly, the existing machines earn more than normal because new machines cannot be built at once. The extra earning resembles rent, but only for a time: in the long run new machines are made and the surplus disappears.

Quasi-rent = Total revenue − Total variable cost

Worked figure. A firm’s weekly TR is Rs. 5,000 and TVC Rs. 3,000; its fixed cost (interest and depreciation on machines) is Rs. 1,500.

Quasi-rent (TR − TVC) is the sum of fixed cost and supernormal profit. In the long run, entry of new firms and machines removes the supernormal profit, and quasi-rent shrinks to the normal return on fixed capital.

Rent and quasi-rent compared. Rent is earned by land (fixed in supply always); quasi-rent by man-made factors (fixed only in the short run). Rent can persist; quasi-rent is temporary.

How this is examined

“Explain Ricardian theory of rent” was a 16-mark question in January 2026 (100-mark), and “Critically examine the Ricardian Theory of Rent” in June 2025 (100-mark); it was a 10-mark essay in both January 2026 and June 2025 (80-mark papers). “Quasi rent” was a 6-mark note in January 2026 (80-mark). Give the table, the Ricardo quotation on corn and rent, and at least six criticisms, and end with the modern view.