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'I wouldn't change the way I live, just to get PR. The only change I did, when I was applying for PR, is that I stopped remitting my S Dollars to India for the last couple of years, thinking that having a good bank balance will help. But in hindsight that was a blessing in disguise as the INR just depreciated more than enough to cover the investment gains I would have made, if I had remitted them'.
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This is a common misconception that I expect some of us find a surprise, as we don't understand the derivation of a deposit interest rate, versus an fx rate. I also did not understand it, until I worked in an FX trading group, and had to understand the derivation of 'forward FX rates'. Hence why I imagine it is a mystery to many people esp those not working in FX pricing, in a bank...
So, you make a 12 month deposit in S$ and just say it pays 0.25%, pretty crappy eh?
Or, you see a Malay bank offering 3% on MYR for the same term
And then an Indon one paying a thumping 10%!?
Isn't it clear where to put the money? Convert S$ to IDR, and get 10% right?
Wrong.
In general terms the forward FX price models the expected relative value in the future between your base and invested currency, and rewards you for relative depreciation (as is typical vs the S$) via a higher headline interest rate. So...
Indon 10%, vs 0.25% for S$, because the traders pricing model predicts the IDR will have devalued about 9.75% against the S$ in 12 months time. I.e. you gain on the 'high headline interest', but when you convert the IDR back after 12 months, you lose say 9.75% (assuming the modelled forecast plays out, it could of course be randomly better or worse) on the relative FX swing.
Motto of the story.
Don't be fooled by headline high interest rates for foreign currency depos. They are only highlighting the one seemingly attractive side of a 2+ sided complex equation. The overall net-net picture is usually far less appealing, if it is appealing at all.
It is an investment maxim, that often the best return you can get from cash, is from paying down your own debts. Yes, as simple as that! Start with those with the highest % rate (credit cards?), and work down (mortgages?).
What you get charged in interest on such loans is usually materially higher than what you'll ever earn from investments/deposits. And you pay less tax on any deposit income, AND pay less interest on outstanding loans ... it is a double-bonus. It's not an approach you'll see promoted, as no company has a financial interest in doing so (quite the contrary) ... hehehe.... evil bloody bankers