Hi Treedream!
Regarding your questions;
1. I agree with Spires that this is not possible. However, if you're above a certain income threshold you can add money to the third 'pension pillar' as our government calls it. This one you can build up seperate from AOW and your job pension. However I would really look into this as, to my knowledge, you can only get the money out once you're above a certain age and if you will get sufficient from your SS + job pension + investments it may not be useful to have FIRE money locked up there. I think it's been discussed in the Dutch thread as well before (that thread is in the Meetups section) and if I'm correct @Imma is investing some money this way.
2. I'm an avid renter for now as I think single me is best off living in an as cheap as possible place with roommates and I'm not planning to stay in my current area long term. I think I would make sure to have the amount needed for the closing costs etc and if you need a downpayment to start splitting the money between investments/downpayment in a way that makes sense with your desired timeline. Also realize that you can always get your money out of your taxable investments if needed, so it is not like this money is out of reach. It would just suck if that happens during a dip in the market ofcourse.
3. As Spires said, check out DeGiro. Also check out the 'financieel onafhankelijk blog' (or sth like that), he has several suggestions for index funds. VWRL is a good option.
Sorry, I missed this as I was on holiday before. Welcome! :)
Hirondelle is right. I worked for several years at a company that did not offer any kind of retirement options. In my current job I am enrolled in a work pension. Every year, the BD decides how much money you should reasonably set aside for retirement (jaarrruimte). Most company pension schemes max this out, which is why you can't usually put extra money in your work pension. If you have no or a very bad company pension, you still have leftover jaarruimte (see calculator on BD website). You can open a blocked investment account or savings account (bankbeleggen/banksparen) or choose an insurance option (lijfrenteverzekering) and you can deduct your yearly contributions from your income tax until you've maxed out the jaarruimte. On top of that, the money isn't included in your box 3 wealth and it doesn't contribute towards your taxable wealth. If you have been contributing for more than 5 years, you also don't have to use this money to live off if you ever need to apply for any means tested benefits (bijstand etc) in the same way that you don't have to cash in a company pension.
So there are advantages to doing this. The big disadvantage is that you can't touch the money until 68 and it's not really that much. You can still use jaarruimte until 7 years after the tax year you gained it, so all in all I will be able to invest about €4500 through this - unless I quit my current job with pension of course. I contribute €100/month right now (which is tax deductable so about €60/net) and when I've maxed it out I'm just going to forget all about it until I'm 68, or 70 or 75, who knows what the retirement age is by that time. I sort of hope these type of accounts will be easier to access in the future. The money in this account is not gone if you pass away before retirement age, it will be part of my inheritance.
Now, if you already have a good pension through work, you can still put extra money away in a blocked account (excedentpensioen) but I wouldn't recommend that to anyone who's on MMM. I know a lot of people through work who do it because they are terrible with money and it's at least a better option than wasting the money on luxury trips and expensive cars. The money doesn't count towards box 3 wealth, but the contributions are not deductible from your income tax (in return the annuity you eventually get is tax-free). You can't access anything before retirement age, but you'll get an extra high pension when you're really old. Some people do it to shelter wealth from the wealth tax but the tax is actually pretty low. You're much better off having the money in a taxable investment account that you can access anytime.
I am personally a big fan of being a home owner. I hadn't thought I enjoyed it this much. But I would never recommend it to anyone living in A'dam. If your rent is €680 now (inclusive) and you'd want your net mortgage payment to be lower than, say, €500 you'd be looking at a roughly €160.000 mortgage and I figure that + savings would just about pay for a studio in a bad area. It's a nice enough city but imho it's massively overpriced - wages aren't significantly higher and there are very good commuting options into the city if your job is based there. I travel to Amsterdam maybe twice a month from the other side of the country and it takes me a little over an hour on a direct train.
Our house is in that price range but it's an actual house with several bedrooms, we used to rent out one room too. If you're buying at some point and you're close to a university that's always an easy way of making money and it's not a big shift if you've always lived in shared homes before. Also, you should also keep an eye on how much you'll pay in local taxes because that varies widely. Someone we know owns a property in the same price range as our home, but in a different city, (Hirondelle's city, actually!) and they pay almost twice as much as we do.