For Principal dentists in 2017/18 average taxable income from Health Service and private dentistry was £116,000 compared to £99,100 in 2016/17, a 17.0 per cent increase. Compared to 2015/16 figures, the 2017/18 average taxable income has decreased by 1.4 per cent.
For Associate dentists in 2017/18 average taxable income from Health Service and private dentistry was £52,300 compared to £59,100 in 2016/17, a 11.5 per cent decrease. Compared to 2015/16 figures, the 2017/18 average taxable income has decreased by 3.5 per cent.
There was no change in average taxable income from Health Service and private dentistry for all self-employed GDS dentists in 2017/18, when compared to 2016/17.
A detailed explanation on how dental type in Northern Ireland is identified can be found in the Methodology. Please note that in 2017/18 the methodology was revised to allow dental type to be identified more accurately. Historically the expenses to earnings ratio (EER) information was obtained in 10 per cent increments and the lowest point was used to determine the dental split. This year this has been revised to obtain the EER data in 5 per cent increments.
In 2016/17 an EER of > 50 per cent was used to identify Principal dentists whereas in previous years, this figure was 40 per cent. This change was a contributory factor in the decreasing earnings and expenses of Principal dentists and the rise in earnings and expenses of Associate dentists in 2016/17.
The change in methodology meant that for 2017/18 the EER used to identify Principal dentists has been revised once again and an EER of >45 per cent has been used.
Although there are large changes in the gross earnings and total expenses between 2015/16 and 2017/18, this now reflects a more accurate representation of earnings and expenses in Northern Ireland.
In 2015/16 taxable income for Principal and Associate dentists was £117,600 and £54,200 respectively. Compared to the £116,000 and £52,300 figures in 2017/18, this represents decreases of 1.4 and 3.5 per cent since 2015/16 which have not been tested for statistical significance. These figures are presented in table and figure 10.1 which further confirm that the figures in 2017/18 are in line with expectations following the methodological revision.