Then you can pretty easily calculate what the holding costs of that home will be and when you'll have to replace those systems.

That being said, anything can happen, but if you run your numbers accordingly, make sure that your contractor is trusted and do all the other stuff you'll be a little more protected than the next person flipping that does not do this type of calculation. 

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

It would be pretty simple to find a mortgage loan calculator online; input the current loan balance; and modify the terms as needed.

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

I'm also looking to get my hands on a good calculator for short term rentals since I'm terrible with Excel and only have a calculator for long term rentals that I know is missing sections that are specific to short term.Any help you can give me would be very much appreciated :) BiggerPockets has an Airbnb calculator, and I see that you're a pro member.Since you've read the STR book and done other education, you know HOW to pick a market lol.

Have you calculated how many properties or average monthly revenue it would take to reach that goal?

We got our required and expected profit that we calculated at the very beginning.

Run the calculations on the expense of doing a refi at a slightly reduced rate vs. keeping the current loan for whatever period of time you think you will hold this house.