Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Economics of buy-to-let (investment) flats
Seems like a bad deal to me. But before I get to that, a couple of points on your expenses: Onward. You value a property by calculating its CAP rate. This is what you're calculating, except it does NOT include interest like you did -- that's a loan to you, and has no bearing on whether the unit itself is a good investment. It also includes estimations of variable expenses like maintenance and lack of income from vacancies. People argue vociferously on exactly how much to calculate for those. Maintenance will vary by age of the building and how damaging your tenets are. Vacancies vary based on how desirable the location is, how well you've done the maintenance, and how low the rent is. Doing the math based on your numbers, with just the fixed expenses: 8400 rent - 2400 management fee - 100 insurance = 5900/year income. 5900/150000 = 0.0393 = 3.9% CAP rate. And that's not even counting the variable expenses yet! So, what's a good CAP rate? Generally, 10% CAP rate is a good deal, and higher is a great deal. Below that you have to start to get cautious. Some places are worth a lower rate, for instance when the property is new and in a good location. You can do 8% on these. Below 6% CAP rate is usually a really bad investment.  So, unless you're confident you can at least double the rent right off the bat, this is a terrible deal. Another way to think about it You're looking to buy with your finances in just about the best position possible -- a huge down payment and really low interest. Plus you haven't accounted for maintenance, taxes (if any), and vacancies. And still you'd make only a measly 1.2% profit? Would you buy a bond that only pays out 1.2%? No? What about a bond that only pays 1.2%, but also from time to time can force YOU to pay into IT a much larger amount every month?