(check page 7 of this IRS Pub)Something that's non-passive and you materially participate means you can deduct those losses up to the excess business loss limit. 

I think you save money by using a good accounting program-no matter which one--because you have instrumentation to watch your income and expenses and because you're less likely to lose deductions.

Not really a tax question as the membership % decides who does, gets and deducts what. 

If purchasing new real estate as part of your reinvestment, a cost segregation study can maximize depreciation deductions, offsetting future taxable income.For effective planning, assess how the sale price is allocated between real estate, tangible assets, and goodwill, as this determines the tax treatment.

@Kolin Goffthe short answer is yes but I don't think an increase of 30% is enough to make it worth it - because (A) DSCR loans typically have fairly high closing costs, which will just get deducted from your proceeds, and (b) your rate will probably go up. 

I buy real estate but I carry debt which is actually tax deductible, my money works for me.

Deduct NEW property taxes after you buyDeduct home insurance costsDeduct maintenance percentage, typically 10%Deduct vacancy+tenant nonperformance percentage(we recommend 5% for Class A, 10% Class B, 20% Class C, good luck with Class D)Deduct whatever dollar/percentage of cashflow you wantNow, what you have left over is the amount for debt service.Enter it into a mortgage calculator, with current interest rate for an investment property, to determine your maximum mortgage amount.Divide the mortgage amount by either 75% or 80%, depending on the required down payment percentage - this is your tentative price to offer.If the property needs repairs, you'll want to deduct 110%-120% of the estimated repairs from this amount.Be sure to also research the ARV and make sure it's 10-20% higher than your tentative purchase price.As long as the ARV checks out, this is the purchase price to offer.It is probably significantly below the asking price.

If you continue using it as a rental but reduce STR activity below the material participation threshold, your deductions may become passive and subject to loss limitations.2.

The risk of "piercing the veil" applies more to LLCs when personal and business finances are not properly separated, not necessarily to individual landlords renting a portion of their home.A more practical approach is ensuring you have a solid lease agreement, sufficient liability insurance (including an umbrella policy), and properly reporting rental income and deductions on your tax return (Schedule E).

and also like what I do Utilize as STRs: You furnish and list these properties as short-term rentals (STRs) on platforms like Booking.com or Airbnb.Generate Cash Flow: The higher rental income from STRs, compared to long-term rentals, allows you to cover your mortgage/lease payments, generate positive cash flow, and potentially have funds left over for further investments.Positive Cash Flow: STRs often generate higher rental income than long-term rentals, allowing you to cover your costs and potentially profit.Tax Advantages: You can often deduct expenses related to your STR business, such as mortgage interest, property taxes, and maintenance costs.