I like credit cards for businesses.

DSCR uses the rents to qualify or "Debt Service" the mortgage payment but credit will always be a factor and the higher the credit score the lower the rate. 

This allowed me to use my HELOC to pay buy a property, then each month I pay off the HELOC with my credit cards, and just before the credit cards close, I pay them off with the HELOC.

Quote from @Rafael Trinidad: Condo information 3 million to fix only had about $500,000 in reserves and only 70% of the units were making monthly hoa payments This is the issue when leveraging credit cards and thinking real estate can only go up.

Easiest, least creative solution would be to get a credit card.You can also get an appointment/phone call with a business banker where you bank, and ask about obtaining a line of credit.

So wipe out of 24 mil in credit lines..

It is okay for you to have access to both accounts under one login.Just make sure that you are making personal purchases with your personal credit card and personal checking account.Make business purchases with your business credit card and business checking account.Best of luck

Using a tiered deposit system based on credit score can be risky legally if it's not applied uniformly.

Separating the business and personal finances by using a business bank account and business credit card is the #1 thing you can do to make bookkeeping easier.

@Tom Daniels   You do not have to pay anyone $3,200 to apply for zero interest credit cards.