Taken from the report posted at the start of this topic
27. The Tax Wedge is defined as the sum of personal income tax plus employee and
employer social security contributions together with any payroll taxes less cash
transfers, expressed as a percentage of labour costs. It is the difference between
what an employer has to pay in terms of gross wages plus taxes to hire an employee
and the net income received by that employee after deduction of all taxes on their
wages. High tax wedges particularly affect low skilled workers, second earners and
older cohorts whose labour force participation is more sensitive to taxation.
Reductions in the tax wedge on these groups can have significant impacts on
participation rates which can increase medium term economic growth rates through
the labour supply channel.
28. Reductions in the tax wedge can also increase the demand for labour from
employers. For these reasons, a competitive tax wedge is considered vital in
encouraging employment growth across all income categories and to incentivise
individuals to remain in or return to the labour market.
29. In terms of international comparisons, according to the OECD “Taxing Wages report
2017”, based on 2016 data, Ireland had the seventh lowest tax wedge (27.1) of the
34 members in the OECD for a single worker on average earnings and the lowest of
the 21 EU members of the OECD.