Hi Natman kor,
I said, I may not be able to get 90% based on my own calculation. Then again, my method is old, when I learned credit, variable income is capped to a certain extent similar to allowance income. But, since BNM tightened the ruling this year, there were some adjustments made in accordance to each bank's risk appetite to book in the loans.
Hence, I asked each and every banker prior to submitting my loan if they will accrue my performance bonus (variable) into their nett / gross income calc. and how would they do it? Also, asked about the DSR because, even if they take in and DSR is low, defeats the purpose. Hence, I was able to find out the ways of how both local and foreign banks work and I cherry picked from the beginning with my application. This also included the factor to strengthen the application by offering guarantor hence I applied with those that accepts guarantor so that, I wont need to start over.
This is where I discovered that each bank has its own calc. of the bonus income and some banks; i.e.: RHB though no lock in period, they recognised very low contribution of my bonus to my nett income hence my DSR was high and MOF offered was less than satisfactory. That is when I decided to approach HSBC. During my conversation with the HSBC officer, I had some comfort that the loan will be able to get through though HSBC dont accept guarantor, because they look at Gross Pay and not Nett Pay. Also, they take only the latest bonus and not average of 2 years. Similarly, my loan was approved because my DSR was only 70+% including the new commitment since they took Gross + 1 Year Full Bonus.
Other banks, my DSR was in high 80s% or 90%. I went with a lady because, I always believed in law of attraction. +ve and -ve works better than +ve +ve or -ve -ve.

Hahaha u really go in deep deep in taking loan too, HLBB come back and told me i can only get 60% if add in another person with very low commitment else with my own name i can get only between 40-50% ridiculous !!! i told them a bank has offered me 500k before but later i decline the purchase of that prop.