No, what i mean is i try out using the OCBC calculator.
if i start off as $1000 on e.g. 1 May 2016
- credit salary interest (1.2%) , earn $1.01
- Make 3 payment online (0.5%) , earn $0.42
- Incremental interest (1%), say if deposit $40,000 next mth (1 Jun 2016) , earn$33.97
Total earn = $35.44
vs
if i start off as $41,000 on e.g. 1 May 2016
- credit salary interest (1.2%) , earn $47.78
- Make 3 payment online (0.5%) , earn $17.41
- Incremental interest (1%), say only manage to save $100, earn $0.08
Total earn = $61.01
so my point is, whats the point in taking out the $40,000 and deposit it back the next month to earn that 1%, once you emptying the account, i assume your "credit salary interest (1.2%)" and "Make 3 payment online (0.5%)" will earn very little interest... no?
Say for example you have another savings account A that earns you 1.6% interest.
Scenario 1 (alternate account)
if i start off as $3000 in OCBC 360 and $40000 in account A on 1 May 2016
- credit salary interest (1.2%) , earn $3.03
- Make 3 payment online (0.5%) , earn $1.26
- Base interest (0.05%), $0.12
- Interest on account A, $54.36
Total earn in May = $58.77
then $40k transfer to OCBC 360 in Jun, total balance 43k incremental 40k
- credit salary interest (1.2%) , earn $43.82
- Make 3 payment online (0.5%) , earn $18.26
- Base interest (0.05%), $1.82
- Incremental bonus, earn $33.97
Total earn in Jun = $97.87
Average interest monthly = $78.32
Scenario 2 (leave in OCBC 360)
$43000 on 1 May 2016
- credit salary interest (1.2%) , earn $43.82
- Make 3 payment online (0.5%) , earn $18.26
- Base interest (0.05%), $1.82
Total earn in May = $63.90 <$78.32
Conclusion: Scenario 1 (alternate account) is better. Note that this conclusion is based on assumption that savings account A yields 1.6% interest, conclusion may change when assumption change.