hwarzoner
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- Apr 20, 2007
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From AI
For your CIMB Bank FastSaver example:
You earn about $544.82 on $500,000 for one month.
To annualize it (EIR = Effective Interest Rate):
FV=PV(1+r)nFV = PV(1+r)^nFV=PV(1+r)n
FV=PV(1+r)n=1000(1+0.05)20=$2,653.30FV=PV(1+r)^n=1000(1+0.05)^{20}=\text{\$2,653.30}FV=PV(1+r)n=1000(1+0.05)20=$2,653.30
PV\mathrm{PV}PV
$
rrr
%
nnn
Simple way:
EIR=544.82500000×36531EIR = \frac{544.82}{500000} \times \frac{365}{31}EIR=500000544.82×31365
= 1.28% p.a.
That’s your effective annualized yield for this promo period.
Breakdown:
Why low?
Because FastSaver’s structure is front-loaded:
For large balances like $500k, FastSaver is not ideal.
Comparison for your $500k:
For your CIMB Bank FastSaver example:
You earn about $544.82 on $500,000 for one month.
To annualize it (EIR = Effective Interest Rate):
FV=PV(1+r)nFV = PV(1+r)^nFV=PV(1+r)n
FV=PV(1+r)n=1000(1+0.05)20=$2,653.30FV=PV(1+r)^n=1000(1+0.05)^{20}=\text{\$2,653.30}FV=PV(1+r)n=1000(1+0.05)20=$2,653.30
PV\mathrm{PV}PV
$
rrr
%
nnn
Simple way:
EIR=544.82500000×36531EIR = \frac{544.82}{500000} \times \frac{365}{31}EIR=500000544.82×31365
= 1.28% p.a.
That’s your effective annualized yield for this promo period.
Breakdown:
- Base interest alone = ~0.59% p.a.
- Bonus promo lifts it to ~1.28% p.a.
Why low?
Because FastSaver’s structure is front-loaded:
- good rates only on first $75k
- everything above that falls back to 0.50%
For large balances like $500k, FastSaver is not ideal.
Comparison for your $500k:
- FastSaver → ~1.28% EIR
- StarSaver → ~1.95% EIR (much better)
- Some fixed deposits now can be around 2.2–2.8% depending on tenure.