Sometimes talking about incomes and retirement is a touchy subject and people can get a little offended so I want to say right off the bat, I really don’t mean any offense and what I offer is just my own thoughts.
In order to retire in basic comfort you’re going to have to save about 1000 USD a month and earn 7% returns on your investments for the next 30 years straight. So you are facing 2 problems:
- On your salary, it’s not realistic for you to tuck away 30,000 NT a month for the next 30 years. With 3 kids as you mentioned and a monthly salary of 75,000 NT, you’d be doing well to save just 20,000 and even that would be a stretch. Also, you shouldn’t count on your salary increasing very much over time, since you are in an industry where that often isn’t the case. Yes you can expect small increases over time, but in Taiwan English teachers reach peak income pretty early and it stays relatively consistent from there on out unless you’re adding in private tutoring or a second job, so it’s safe to only count on a small bump in monthly salary. Unless of course you switch industries which is an unforeseen event.
You didn’t mention your spouses salary, does that imply she is a stay at home mom? If that is the case, she’s going to have to get back to work as soon as possible because the truth is your salary just isn’t nearly enough. It’s no offense to you or your industry, it’s just the math.
- You’re going to have a very difficult time earning 7% returns for the next 30 years straight. Financial advisors either connected to banks or on their own don’t see those kind of returns anymore despite what you may have seen or heard. The financial industries returns are decreasing with each passing year, and are very close to zero 0% returns these days when you deduct fees.
There are funds out there run by people not connected to the financial industry who do see exellent returns year after year and I can give you a few names, but the problem is you don’t have any upfront capital so it won’t be worth their time to take you on as a client. I run my own very successful fund but again same problem, you don’t have any upfront capital and I do require a certain minimum to take on new clients.
Now you said you own your home, does that mean outright? If that’s the case, that means your net worth is 100% in Taiwanese real estate. Without even talking about the potential problems of the Taiwanese housing market ( of which there are some ) do you think it’s ever wise to have 100% of a persons net worth tied up in anything? With interest rates as low as they are, I wonder why you wouldn’t prefer to have a 30 year mortgage, and use a lump sum of money to get a head start on the investment side of your portfolio?
Certainly it would be safer and you’d see much higher terminal returns if you were to divide your holdings around 50% in your home and take equity out on the other 50% to put to work in the markets. That can be a TREMENDOUSLY scary concept for a lot of people, so I’ll just let that one simmer for a little while with you 
Overall, you’re not alone. Planning for retirement is a daunting task anywhere, but in Taiwan it is exponentially worse because we can’t count on government pensions or senior citizen benefits later on. My parents being Canadian will be receiving about 4000$ a month forever when they retire. It’s far easier to plan for retirement when you can count on nearly 50,000$ a year in pensions. I’m going to be completely alone to do this myself, as are the rest of us who plan on living in Taiwan for the foreseeable future.
Fortunately you’re very young and already thinking about this, which puts you way ahead of the curve 