Both lots were 20k total or 10k each. 

Now if I pass that income as management fees to S-corp, I pay $3.5K (SE tax) + $800 (LLC fee) + $1700 (CPA + bookkeeping) = $6K in total.

Quote from @Jeffrey Bourque: Hello All, I am new and this is my first attempt at purchasing a property with the intent to create monthly cash flow.The property: Triplex Listed at $140,000 - Total monthly rent income $2,150 - Tenants want to stay and are all willing to sign new leases for 3 years - 8 beds 5 baths and 3,500sqft livable space on a 4,800sqft lot - Heat and electric paid by tenants and water trash paid by owner $180 month - I have managed to talk the selling price down to $105,000 with a kick of $10,000 for closing and commissions so $115,000 all in - Building is in fairly good shape according to pictures and questions but have not done a inspection yet - some general maintenance repairs are needed according to the seller but nothing that seems to bother the tenants. - Taxes are on the higher side at $6,000 yearMy Numbers: $115,000 putting 20% of my money $23,000 and finance the rest with total expense of $1,834Monthly expense numbers: Future Maintenance 13% $273 - Vacancy 5% $105 - Property Insurance 5% $105 - Property Taxes 23% $500 - Property management 10% $215 - Office/Travel/Legal 4% $84 - Mortgage 26% $552 - Monthly Cash Flow - $316 per month or $3,792 per year so Cash on Cash = 17%I think this looks like it is a deal worth doing and I also believe I can bump the total rent up by $50 each tenant which I think make it even better.

When you live in that duplex for 2 years and then sell you'll be able to take 50% of the profit tax free (the allocation for the side you lived in). 

It's not just the taxes, but being able to at-a-glance look at expenses by the month and year, profit and loss calculating automatically, and even cash flow by property and total portfolio by month and year.Thanks for suggesting it!

Totally up to you.

Why pay rent when your landlord gives you free housing, free maintenance team, free mortgage, free electricity, free water, free trash?

Quote from @Kornelius Friske: We have a STR located in peoria AZ. it's 6 beds (garage conversion) and about 3900 sq ft in total. our energy bill last month was $450 and has been hovering in the $350-$450 range since we went live in august.

I usually provide our budget as well with totals spent. 

Mailchimp also I believe is free up to a specific number