Your monthly costs should be less because you still have to pay property taxes. The monthly maintenance fee(修繕積立金)also goes up over time.
You should consider your total costs over say 10 years(that includes initial payments) and then compare that to renting(don't forget to add on 更新料).
Also remember, even if you move out and decide to rent the place, there is no guarantee on occupancy, and you will be losing a chunk of that rent to the management company unless you decide to manage it yourself(which can be problematic). Your monthly mortgage will remain the same, but as the place gets older, the rent you can gather from it is likely to go down. Real estate agents and management companies love the "just buy it and if you want to move out rent it" because it can get them the sale, and then later down the line they get to manage more properties while not handling the risks.
As others said, no more than 1/3 of income, but preferably less.Riayain wrote: ↑Fri Jun 26, 2020 8:42 am Yeah... I'm still crunching all the numbers to see if it's even worthwhile for me, but since I'm so new to this, there's a lot I'm not sure about. I'm not sure, for example, around how much of my gross income should the mortgage payments be. There's a lot of conflicting advice on this online. In general, there's a lot of conflicting advice.