What is a bunching estimator?

What is a bunching estimator?

Saez (2010) introduced an influential estimator that has become known as the bunching estimator. Using this method one can get an estimate of the taxable income elasticity from the bunching pattern around a kink point. The bunching estimator has become popular, with a large number of papers applying the method.

What is the elasticity of taxable income?

We find that the overall elasticity of taxable income is approximately 0.4; the elasticity of real income, not including tax preferences, is much lower. We estimate small income effects of tax changes on reported income, implying that the compensated and uncompensated elasticities of taxable income are very similar.

What is bunching in econometrics?

2016-12-02. A growing literature in empirical economics is focused on bunching. Loosely speaking, bunching occurs when many people self select to a specific location in the range of some variable. This bunching behavior is then interpreted as the response to some economic reality.

Why is the elasticity of taxable income important?

The elasticity of taxable income (ETI) – or how taxable income changes in response to a change in the net-of-tax rate – is of central importance in understanding how taxpayers react to changes in personal taxation. This in turn diminishes the revenue-raising function of a tax.

Do Taxpayers Bunch at Kink Points?

The progressive US individual income tax generates a piecewise linear budget set with kinks at each point where the marginal tax rate jumps. Furthermore, the amount of bunching generated by budget set kinks is proportional to the size of the compensated elasticity of income with respect to the net-of-tax rate.

What do you understand by elasticity?

Elasticity is an economic concept used to measure the change in the aggregate quantity demanded of a good or service in relation to price movements of that good or service. A product is considered to be elastic if the quantity demand of the product changes more than proportionally when its price increases or decreases.

What is tax elasticity and buoyancy?

Usually two concepts are followed in practice: tax elasticity and tax buoyancy. Tax elasticity considers the automatic response of revenues to the change in income given that tax structure is unchanged. On the other hand, tax buoyancy reflects both the impacts of income and discretionary changes on revenue earnings.

What is the bunching?

Bunching is the combining of multiple odd-lot or round-lot orders for the same security so that they can all be executed at the same time. Bunching also refers to a pattern that appears on a ticker tape when a series of same-security trades print consecutively, one after the other.

What is the meaning of tax elasticity?

1 This response is measured by the concepts of tax elasticity and tax buoyancy, the former measuring in some sense the automatic response of revenue to income changes (i.e., revenue increase, excluding the effects of discretionary changes), and the latter measuring the total response of tax revenue to changes in income …

How is the bunching estimator used to estimate taxable income?

Saez (2010) introduced an influential estimator that has become known as the bunching estimator. Using this method one can get an estimate of the taxable income elasticity from the bunching pattern around a kink point. The bunching estimator has become popular, with a large number of papers applying the method.

How to calculate the elasticity of taxable income?

In order to estimate the elasticity of taxable income recall the definition: where the denominator is the change in the net-of-tax rate. Evaluate this elasticity at the bunch point z ∗ and use the above approximation (re-arranged) d z ∗ = B h ( z ∗), the bunching estimator is

What does Saez call the bunching estimator?

This is what Saez calls “bunching” because the interval ( z ∗, z ∗ + d z ∗) is strictly dominated in the sense that anybody in this range is better off by decreasing their taxable income to z ∗ (which is the bunching point).

How to calculate bunching estimation of elasticities using Stata?

Title Bunching estimation of elasticities usin Author Marinho Bertanha;Andrew H. McCallum, Ale Keywords bunchbounds;bunchfilter;bunching;bunchto Created Date 1/15/2021 11:28:21 AM