Split-Rate Taxation

Definition

Split-rate (or two-rate) taxation is a property tax that levies a higher millage rate on land values than on building values. It is a partial, incremental form of land value taxation: instead of abolishing the building tax entirely, it shifts the balance toward land.

Why It Matters

Split-rate taxation is the most politically practical path to Georgist policy in jurisdictions that already levy a conventional property tax. Reducing the rate on improvements removes a penalty on building and renovation; raising the rate on land discourages holding sites idle. The further the ratio is tilted toward land, the closer the system approaches a pure LVT.

In Practice

The system is most associated with Pennsylvania, where state law permits municipalities to set separate rates. Pittsburgh (from 1913), Harrisburg, Allentown, Scranton, and others have used it. This created the natural experiment behind the strongest empirical evidence that the policy increases construction. For a mainstream, non-advocacy primer on the theory, the Pennsylvania record, and the practical obstacles (assessment difficulty, revenue adequacy, winner/loser politics), see the St. Louis Fed's Cohen & Coughlin (2005) survey. For worked parcel-level examples of what a revenue-neutral shift does to actual tax bills, see the Miller & Hoskins college-town simulations for South Bend and Princeton (advocacy-institute analyses, graded as such).

Harrisburg is the most-cited second Pennsylvania example after Pittsburgh: under Mayor Stephen Reed (1981–2009), the city taxed land at up to six times the rate on buildings, during a period in which vacant structures fell from over 4,000 to under 500 and building-permit activity rose substantially. As with Pittsburgh, attribution to the tax alone is contested — the period also saw sustained mayoral redevelopment initiatives — so the strongest claim is comparative: Harrisburg outperformed similar Pennsylvania cities that did not adopt split-rate taxation (see Harrisburg).

Practical Obstacles

Cohen & Coughlin (2005) is candid about the difficulties, drawing on Edwin Mills's (1998) Lincoln Institute analysis: separating raw land value from improved-property value is administratively hard, since land is rarely observed unimproved once it is developable, and hedonic pricing techniques are difficult to extend reliably to commercial parcels. On revenue adequacy, Mills estimated that even a 100% tax on land rent might raise at most roughly 1% of property value — insufficient by itself to replace conventional property-tax revenue in most jurisdictions, though Pittsburgh's own experience is cited by others (Netzer, Gaffney) as more optimistic. Cohen & Coughlin also flag a genuine theoretical counterargument, not just a political one: uniform taxation can outperform pure land taxation when land is partly absentee-owned or when landowners value risk-pooling across jurisdictions — qualifying the textbook "land taxation is always efficient" claim. Politically, any shift toward land creates clear winners (owners of underbuilt, high-land-value sites) and losers (owners of intensively improved, low-land-value sites), and the losers have a strong incentive to organize against it.

See Also

• Brueckner (1986) — the canonical theory of why grading the tax toward land raises building intensity
• Land Value Tax · Split-rate taxation increases construction · Pittsburgh
• Detroit Land Value Tax Proposal (2023–24) — a recent attempt to bring split-rate taxation to a major US city outside Pennsylvania
• Gaffney (1971): The Property Tax Is A Progressive Tax — Gaffney's finding that commercial land (highest land-share of value) bears the property tax most heavily is directly relevant to who wins and loses under a shift toward land
• Gaffney (1992): Rising Inequality and Falling Property Tax Rates — a 50-state farmland study finding higher property tax rates (i.e. a heavier land-relative-to-income burden) associated with smaller, more equal farm holdings

Sources

1. Richard Dye & Richard England (2010), Assessing the Theory and Practice of Land Value Taxation — used for the mechanism description and implementation survey (A/B-claims). wiki summary
2. Empirical base: Oates & Schwab (1997) · Plassmann & Tideman (2000) — used for the construction-effect evidence (B-claims; full caveats on the outcome page).
3. Jeffrey P. Cohen & Cletus C. Coughlin (2005), "An Introduction to Two-Rate Taxation of Land and Buildings," Federal Reserve Bank of St. Louis Review 87(3) — used for the Harrisburg example, the Mills (1998) assessment-difficulty and revenue-adequacy analysis, and the absentee-ownership/risk-pooling theoretical counterargument in §"Practical Obstacles" above (B/D-claims). wiki summary