Just curious - what sort of down payment do you usually require of US citizens? 

Those willing to go beyond that could be good partners for real estate investors.Traditional banks/Local Banks and non-bank lenders - If they are a portfolio lender, meaning they actually hold on to the loan and don't just collect your payment, then they have the ability to be flexible.

Those typically seeking $30-$50k are for down payments or second position liens. 2.

If you sell a property, and do a 1031 exchange with the proceeds, but don't need all the proceeds for the down payment of the next property, are you taxed on the additional profit that isn't part of the exchange?

Put in your down payment and terms  in the calculator. 

With $100K in cash, you could leverage this option to make a larger down payment and keep monthly costs manageable.Maximize Rental Income:Are there ways to increase rents on your current properties?

Quote from @John Davey: Id appreciate any help, as ex. if i take out say 100k home equity loan and use 50k each as down payments/cloing costs my understanding is i cant deduct the interest?

With 5% down payments and all the expenses deducted, there seem to have close negative/only around $100 cash flow each month.

Even if it does, there's closing costs to consider.As I said, I have no cash myself, so I'm asking how I can deal with generating cash for closing costs (and a down payment) if it comes to it.The house costs $139000.

What I love about Baselane is that it was built BY real estate investors FOR real estate investors so it's really dialed in to what you're going to need in order to prepare your taxes, keep your books up to date and the more operational aspects of being an REI like tenant vetting and processing rent payments.