Factoring HELOC as down payment into investment calculators

[Jason Howell]

It's pretty common practice to use a HELOC drawn from the equity in one's home to serve as the down payment for investment real estate... yet I haven't found any calculators that will allow me to add that into the equation when it comes to deal analysis. Instead, I have to rely on the Monthly Cashflow figure and then determine what the monthly outlay will be for the HELOC draw that paid for the down payment and subtract that from the Cashflow figure manually.

I'd love to see this as an option in the BP calculators. So maybe this is part feature request...

But I'm sure some of you have experienced this before. How do you factor this variable into your equations when analyzing deals?