We've found it has superior reporting features, integration features, and is overall more efficient to work within than other REI-specific software.The downside is QBO is not set up for REI so you'll need to do that or work with an expert to ensure it is set up for your business appropriately.Something else to keep in mind is your entity structure and how your entities file tax returns.

I pay the bills and factor that in their monthly rent.

If you need an S-Crop depends on many factors: FICA wages/income and net profit.LLC doesn't save any taxes in BRRRRR.

Understanding Price "Improvements"In the world of real estate, pricing is a critical factor that influences both the attractiveness and the competitiveness of a property.

I've included an example below to help illustrate this.So different lenders have different rates (which do vary even for DSCR loans) but these are factors they all consider.See example below:DSCR < 1Principal + Interest = $1,700Taxes = $350, Insurance = $100, Association Dues = $50Total PITIA = $2200Rent = $2000DSCR = Rent/PITIA = 2000/2200 = 0.91Since the DSCR is 0.91, we know the expenses are greater than the income of the property.DSCR >1Principal + Interest = $1,500Taxes = $250, Insurance = $100, Association Dues = $25Total PITIA = $1875 Rent = $2300DSCR = Rent/PITIA = 2300/1875 = 1.23If a purchase, you also generally need reserves / savings to show you have 3-6 month payments of PITIA (principal / interest (mortgage payment), property taxes and insurance and HOA (if applicable).

As others have pointed out, interest income from a partnership can be classified as either "portfolio income" or "ordinary business income," depending on factors such as the nature of the partnership’s activities, the number of loans, and whether the interest is incidental to your main business or a core activity.

Factors like population growth, job market, rental demand, price-to-rent ratio, and local economy are crucial.

(We're aware of the five year look back period for Medicaid eligibilty but it's not a big factor in our decision to do this.)We would get the house appraised so we can document paying FMV.House would be purchased with cash (it's a small home in a rural area and value is low)Inlaws would sign a lease so that it becomes a legitimate rental and we can deduct expenses, etc.

These questions might play a factor on price as well. 

@Yi Chu,Another important factor you need to understand is that when an IRA is invested in leveraged real estate (most MF deals are), the portion of the income derived from the leveraged portion of the property will be subject to Unrelated Business Income Tax (or UBIT), which can be offset by using depreciation and other deductions.