Economists hold an unusual near-consensus: the recurrent tax on immovable property, and especially on land, is one of the best taxes there is — efficient, fair, and well-suited to funding local government. It is also one of the least used in Africa, raising a tiny fraction of its potential. This module is about that paradox, and the broader question of taxing wealth.
Why property tax is near-ideal
- Efficient — land cannot move or hide and its supply is fixed, so a tax on it causes little or no deadweight loss (you cannot produce less land in response). This is the rare tax that barely distorts behaviour.
- A benefit tax for local services — property values reflect local amenities (roads, security, schools), so a property tax roughly charges residents for the local public goods they enjoy, aligning who pays with who benefits (the fiscal-federalism logic).
- Progressive — property ownership is concentrated among the wealthier, so a recurrent property tax is generally progressive, unlike consumption taxes.
- Hard to evade — you cannot hide a building from the assessor; the base is visible and immovable, the opposite of the informal-sector problem.
- Stable and local — it yields a steady revenue well-suited to funding county/municipal services and strengthening subnational fiscal autonomy.
The land-value tax
Henry George and the single tax
Henry George (Progress and Poverty, 1879) pushed the logic to its conclusion: tax the value of land itself (not the buildings on it). Because the supply of land is perfectly inelastic, a tax on pure land value has zero deadweight loss — it falls entirely on the landowner and cannot be shifted, and it does not discourage building (unlike a tax on improvements, which penalises development). The land's value is largely created by the community (a plot is valuable because of the city around it, not the owner's effort — Ricardian rent), so taxing it recaptures a socially-created value. The land-value tax is the closest thing economics has to a free lunch — efficient, fair, and growth-friendly — which is why it recurs in every serious tax-reform discussion. The catch is entirely administrative: separating land value from improvement value requires good valuation.
Why it is tiny in practice
Despite the theory, property tax raises perhaps 0.1–0.5% of GDP across much of Africa, against 1–3% in rich countries. The reasons are administrative and political, not economic:
- Valuation — property tax needs an accurate, current valuation roll (a register of properties and their values). Many African valuation rolls are decades out of date, incomplete, or non-existent; building and maintaining them is the binding constraint.
- Administration — billing, collection, and enforcement (against owners who don't pay) require capacity many local governments lack.
- Visibility and politics — unlike VAT (hidden in prices) or PAYE (withheld), the property tax is salient — owners receive a bill and feel it acutely — making it politically painful to levy and raise, even though that very visibility is part of what makes it accountable (the fiscal-illusion point in reverse).
- Elite ownership — large property owners are often politically powerful and resist effective valuation and collection (the capture and collective-action logic of the Political Economy course).
Taxing wealth more broadly
Beyond recurrent property tax, governments tax wealth through capital-gains tax (on the gain when an asset is sold — but realisation-based, so it can be deferred indefinitely by not selling, the 'lock-in' effect), inheritance/estate tax (on wealth transferred at death — economically attractive but politically fraught and easily avoided through gifts and trusts), and, in the recent debate, an annual net-wealth tax (Saez and Zucman). The wealth-tax debate turns on administrability: valuing illiquid and hidden assets is hard, the very rich can shift wealth offshore (Zucman's hidden-wealth estimates), and several countries that tried annual wealth taxes repealed them over capital flight and administrative cost. The lesson echoes the whole course: a tax's fate is decided by whether it can be administered, and wealth is administratively slippery in a way land is not — which is the strongest argument for prioritising the immovable property base.
Exercise
A county government is broke, delivers poor services, and has a property-rates system that raises almost nothing — the valuation roll dates from the 1990s and collection is sporadic. A consultant says property tax is 'the ideal local tax' and the county should rely on it. (1) Explain the theoretical case the consultant is making. (2) Diagnose why the county nonetheless collects so little. (3) Design a realistic reform sequence to revive the property tax, in priority order. (4) A councillor proposes instead an annual wealth tax on rich residents' total assets. Explain why this is administratively harder than the property tax and likely to disappoint.