Is it profitable, or does it provide a high per hour earning rate?  

Iras pay ubit:UBIT (Unrelated Business Income Tax)is the actual tax that is owed based on the income received within the tax-exempt account or entityWhatever percent of the income is earned by the debt is taxable. 

After 2 years I had 20 units and I was earning a good income managing AirBnB units. 

The amount of those benefits has to do with how much you've earned over a lifetime and several other factors. 

Trust is earned, not advertised for.If you are wondering how I did it when I was getting started, here's an answer you won't want to hear. 

My plan now is to attack that balance with every dollar earned in rent above the mortgage. 

I’m looking at houses and prices but don’t know if I’m getting a great deal I’m looking at what other houses in the neighborhood cost but just don’t want to put my hard earned money in to something that not going to work for me

I’m earning £20,000 p/a and live at home.

I believe the max you can contribute now is $6-$7K/yr.The nice thing with a Roth is the contributions are after-tax, so the funds can be withdrawn penalty free at any time since you've already paid taxes on them (NOTE: you cannot withdrawn any earnings/interest or will be subjects to taxes/penalties).I've even used the funds once (including interest earned) to temporarily fund a REI deal.

As a house flipper your income is considered Earned income.