When you applied didn't you key in your salary?
Salaried workers is average of 3 months, the rest i think is average of 12 months cannot be above 10k. Not all components of your salary are included eg. bonuses aren't included. The HDB officer will verify your stated salary in your application against your documents on the selection date and amend if incorrect. Info can find here...
There's nothing to maintain, it is based at the point of application. If you didn't hit the ceiling on your application date, but crossed on your selection date nothing will happen, you are still eligible for the flat and still eligible for HLE.
thank you. quite helpful. If my wife starts working in Jan 2013, our monthly salary would cross 10K...just by a small margin. though the past 3 months should still be <10K. so hoping they dont take the point in time sample and discard our application.

