Policy Issues • Economic Policy
Total Taxable Resources
Total Taxable Resources (TTR) is a broad measure used in fiscal and economic analysis to provide context for the size of the economy’s potential tax base. Analysts often use it as a denominator to compare tax levels across time in a way that is more closely tied to income-like flows than a production measure alone.
What TTR Represents
- A comprehensive income-based measure of resources generated by the economy that are potentially available to be taxed.
- A framework for comparing tax receipts to a broad “resource base,” especially when discussing long-run trends.
- A concept that is typically built from national accounts and related series, with adjustments to create a consistent long-run base.
How It Differs From GDP and Personal Income
Quick Comparisons
- GDP: measures production (value added) and is often used to compare spending or debt to the size of the economy.
- Personal income: measures income received by households, including wages and transfers, and is narrower than a whole-economy resource concept.
- TTR: aims to measure a broad set of income-like resources across households and businesses to support tax-base comparisons.
Why Analysts Use It
- Tax burden context: comparing receipts to TTR helps describe how large the tax system is relative to a broad resource base.
- Long-run comparability: ratios reduce the impact of inflation and scale, making trends easier to compare.
- Cross-program framing: helps discuss how policy changes relate to the overall resource base of the economy.
Example: A Simple Ratio
A common use is to compute an “effective receipts rate” for a category of taxes by dividing receipts by Total Taxable Resources for the same period.
Common Components (High Level)
Exact definitions vary by use case and series construction, but TTR is typically designed to capture broad income and income-like flows in the economy. Common building blocks may include:
- Labor income: wages and salaries and related compensation concepts.
- Business income: corporate profits and proprietors’ income concepts.
- Capital income: interest, dividends, rents, and other returns.
- Adjustments: definitional items that improve consistency across time.
Limitations and Caveats
- “Taxable resources” does not mean every component is literally taxed; it is a broad analytical base used for comparison.
- Construction depends on underlying national accounts and can change when statistical agencies revise definitions or methods.
- Ratios to TTR are helpful for trend comparisons, but they do not capture distributional details or differences in the tax base across households, industries, or income types.