To hit 100k without connect plan, assuming 16 month package (13th month, 1 month variable bonus, 2 months PB which is very generous, given that C grade is around 1.5 only), this will require a monthly pay of $6250.
Promotion increment is around 10% only. Annual increment is around 2-5%.
Unless you are scholar, or somehow very stellar performance, can get Bs and As every year and promote like clockwork, and the economy performs well all the time, it is very unlikely for a guy to hit 100k by 30.
At 30, the people who can start work the earliest are the
NIE degree batch, who graduate at 25. They can clock 5 years of work experience.
Those who need to go through pgde, can only commence work at 26, 27 (depending on how long they have to do contract teaching). At 30, they would only have 3-4 years of experience, barely completing their bonds.
Those from poly backgrounds can add an additional year.
Furthermore, excluding the salary revision last year, the annual merit increments and promotional increment, and also pb quantums, have been cut the previous 3 years between 2020-2022. Which means even if you can promote quickly, the increase in salary is lower than the pre-covid cohorts.
Also, slowdown in promotion pace also means that salary growth is slower.
All in all, 100k without connect plan by 30 for male is extremely unlikely, unless there are other salary components which are not disclosed