Means testing for subsidised wards

If you have wish to be treated in a subsidised ward and you have an income that exceeds the means testing level, you will receive a lower level of subsidy. The difference is 15% of the bill.

More details are found here in this article:
http://www.tankinlian.com/articles/health.html

Statement from Ministry of Health website:
http://www.moh.gov.sg/mohcorp/default.aspx