Question about the BRRRR Method

[James Hornbeck]

Hey Everyone,

I am new to BiggerPockets and have been reading a lot about the BRRRR Strategy. I have a question about the refinance part, and could not find the answer on other posts. My question is if I purchase a home for $100K ,rehab for $20K, and has an ARV of $150K; When I refinance and get $30k back out, does that increase my mortgage payment, thus increasing rent for the tenants or decreasing my bottom line? Is there a rule of "thumb" where every $1,000 borrowed is a $100 payment etc.?

Thanks