SWITCH: Methods and Applications Michael Savage 25 th June 2015 SWITCH Team: T. Callan, M. Savage, B. Colgan, J.R. Walsh.

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Presentation transcript:

SWITCH: Methods and Applications Michael Savage 25 th June 2015 SWITCH Team: T. Callan, M. Savage, B. Colgan, J.R. Walsh

Overview What is a tax-benefit model? Why are they needed? SWITCH: The ESRI Tax-Benefit Microsimulation model Some Recent Examples Distributional impact of discretionary policy during the Great Recession Exploring tax and welfare options for Budget 2016 Financial incentives to work facing the unemployed

Tax-benefit microsimulation models – what are they ? Detailed nationally representative data on individual families (micro level data) Simulate rules of current and potential reform systems – and compare outcomes Change in Policy Distributional Analysis Exchequer Impact Poverty Impact Change in behaviour Examine Work Incentives RRs, PTRs, METRs What If?

Why are tax-benefit models needed? Microsimulation models provide a nationally representative picture of the impact of policy changes Based on data from real people “Example household” approach Requires assumptions on wages, household composition, benefit entitlement... Results are unrepresentative of population International microsimulation models include: UK (Treasury, DWP, IFS); US (Treasury, OMB, Brookings/Urban Institute TPC); Canada (StatCan); Australia (NATSEM, Univ. Melbourne); EU (EUROMOD ISER at Univ. Essex)

SWITCH - Simulating Welfare and Income Tax CHanges Based on SILC 2010 RMF from CSO 11,500+ individuals in 4,500+ households 6,000+ tax units Representation of the tax base ensured by weights based on: Revenue Income Distribution Statistics DSP projections of numbers on schemes QEC forecasts of employment/unemployment etc. 1,300+ policy parameters

Examples of areas investigated using SWITCH

Examples of population groups investigated using SWITCH

The Distributional Impact of Discretionary Tax and Welfare Policy during the Great Recession Source: ESRI QEC Special Article /view/index.xml?id= /view/index.xml?id=4125

“Austerity” and Other Measures during Great Recession Income tax bands and credits reduced Nominal cuts in welfare payment rates, child benefit Public Sector pay cuts Property tax, USC, Water Charges VAT, Carbon Tax, CGT and DIRT increases Tax relief for pension contributions, health insurance reduced

Impact of Budgetary Policy Percentage Change in Disposable Income by Income Decile

Distributional Impact of Changes in Tax and Welfare Policy Options for Budget 2016 Source: Budget Perspectives = =4226

Distributive Impact of Alternative Tax Policy Instruments (equal cost €500m)

Distributive Impact of a 2% Increase in Welfare Payment Rates

Examining Financial Incentives to Work for Unemployed Jobseekers in SWITCH Source: Budget Perspectives /view/index.xml?id= /view/index.xml?id=4227

Measuring the Financial Incentive to Work Replacement Rate measures how much of in- work income is “replaced” when out-of-work In-work income €500, Out-of-work income €250, Replacement Rate = 50%

Distribution of Replacement Rates, Ireland 2015 Rep Rate Category Unemployed on JA/JB Employees % % > > > > Est. Pop. 163,000 1,581,000

Potential Future SWITCH Development Indirect Taxes Universal Health Insurance Medical Card Valuation Options Development of Housing Support Payments Income Before and After Housing Costs Budget Constraints (eg. how disposable income changes at various hours of work) International Comparisons (project planned with IFS on work incentives)