peripheral
Junior Member
- Joined
- Dec 25, 2010
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Hmm - don’t forget the FX spread on the Stanchart trades. You’ve got the fees right, but the Stanchart side is going to have some extra hidden costs from FX that won’t be reflected in the fees.
You are missing the FX conversion which is about 0.5% one way. If you intend to have the units remain in SC all the way until you sell, you will have to count both ways.
If you are investing $1200 every 4-5 months into IWDA, then SCB may be better. If you are buffering up $1200 per month to invest every 4-5 months into IWDA, then IBKR will be better.
The rule of thumb is to estimate whether you can reach US$100k value (inclusive of capital gain) in less than 7-8 years.
This is where I'm puzzled by the math. Yes, buying USD/SGD with SCB subjects me to a spread of ~90pips per way as opposed to IBKR of almost 0. With the example of $1,200 it's about $5.80 per month (1.36 vs 1.369 for simplicity) due to larger FX spreads.
Buying IWDA for 5 months in a year with SCB would subject me to an additional $29 per year, while employing IBKR would result in me paying an additional $95.20 per year (US$10 x 1.36 x 7) for minimum commission on months without transactions.
Assuming the above are true, it would suggest that I'd have to invest at least $4,000 for 5 months in a year for IBKR to be superior. Also, it appears the fewer the number of months IWDA purchases are made, the worse IBKR performs in terms of overall commissions. Of course, the calculations vary based on quite a few factors such as the applicable USD/SGD spot rate, but should be representative of the case.
A one-way spread with SCB is used in this case, as the assumption is that a transfer will be made to IBKR once the value of IWDA holdings exceed US$100k.
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. So with the higher TER, is it a meh? other than slight convenience.