A Simple Formula for Foreign Shares

Thinking of pumping SGD14,000 on a USD20 stock? How many can I buy?

I came up with this simple formula, just sub in the details.


[(PA/PFC)-brokerage charge]/PS = number of foreign stocks you can buy.

PA= Principal Amount in SGD
PFC= Price of Foreign currency against SGD
Brokerage Charge= must be already in foreign currency
PS= Price of stock in foreign currency


Therefore If you have $14k, and the price of the USD against SGD is 1.4, and your brokerage charge is USD40, and your stock cost USD20 each, this is how it should work out.

[(14,000/1.4)- 40] / 20 = 498.

Thus with $14,000 SGD, you will be able to buy 498 stocks worth $20 USD each with a brokerage charge of $40.

Hope this helps!