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Rich paid less tax when rate went up

Friday 03 Aug 2012 2:21p.m.

Rich paid less tax when rate went up

By Pattrick Smellie

Treasury research has found the proportion of all tax paid by the highest earners fell after the 2001 tax changes that took the top personal income tax rate to 39 per cent from 33 percent.

Far from its intended purpose of increasing the contribution by wealthy people to the cost of running the government, the 2001 tax increase spurred the highest income earners to find ways of avoiding tax, the Elasticity of Taxable Income in New Zealand paper found.

It tracks the proportion of income tax paid by different income bands between 1994 and 2008, and finds the top 10 percent of income earners had begun to pay an increasing share of total income tax in the years immediately preceding the tax rate increase and peaked at 38.9 per cent at the time the tax rate increase was announced.

"However, following introduction of the 39 per cent rate, it fell to 33.9 per cent in 2001," the report says.

"Between 2001 and 2009, the share of taxable income obtained by the top decile fluctuated between 33.7 percent in 2008 and 34.6 percent in 2005."

Treasury warned the results should be treated with caution, but that it showed "the elasticity of taxable income is substantially higher for the highest income groups", meaning the higher the income bracket, the more capacity that group of earners has to manipulate declared income.

"For lower deciles of the income distribution, the elasticity was found to be negligible," the report found.

The Inland Revenue Department last year won a landmark case against two Christchurch orthopaedic surgeons who declared dramatically lower incomes after the 2001 income tax changes than in previous years.

NZN

 
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