Here is the table for Malaysia's personal income tax.
And here is Singapore's personal income tax table.
Imagine if you have a taxable income of 50,000, you will have to pay RM 3325 in Malaysia, or SGD 1250 at Singapore. It is 166% more tax you need to pay in Malaysia compare to Singapore.
Good thing and bad thing, as that's why there are much more entrepreneurs in Malaysia compare to Singapore. Being employed is just not an good option in Malaysia.
Back to reality, most of us are still being employed, counting fingers for days to come till end of month, here is a good guide for tax relief in Malaysia. Just in case you didn't know that actually you may have some of them.
Ultimate tax relief guide for Malaysian