Clarify and explain Private lending payback

[Christopher Manno]

Hello! 

With private lending or hard lending, please clarify how the loan payback with interest tactically happens after you add value and fix up the property (BRRRR) then bank refi? Lets say you commit to 5% interest over 6 mos. then do you pay back just the interest to the lender or the entire loan amount plus interest?

Was thinking it would be best to keep the total loan amount and use for another property ? Of course, tell the lender and show verified paperwork and bank statements. And it would save the time and questions of high value wire transfers back and forth, right?  Thanks 

-Chris