The loan caps vary across lenders, across experience buckets, across asset valuations but 70% - 75% is standard.9mo note at 12.99 i/o - Most say "12" months and then bake in a fee if it goes longer than 9 months.  12.99 is high. 

When I tapped out in March, April and June of '22 I sold all my larger mf on i/o contracts. 

Loan terms are going to vary, based on the asset, your liquidity, net worth.We've got three deals currently under contract with a credit union, 25 yr am, 6.75% rate, 2 years I/O, 5 yr term. 

The federal government does have the authority to regulate things that affect interstate commerce (which is just about everything) so long as proportionality and other considerations are observed.A famous case proving the point is the Heart O' Atlanta Motel (Hotel?)

So when you get to 20% equity, you can refi for cash out, or for a lower rate -w/o the pmi, which allows for cash accumulation.  

. $100k performing I/O note for $90k), how do you classify the extra principal you get back when the loan matures?

@Ugo O.

In the beginning it might be all fun and games with X's & O's and spreadsheets of mortgage quote comparisons but when it comes down to the end of the contract date, it'll boil down to how stressful (it was or wasn't) and how direct the mortgage professional was in caring enough to get it closed.

I have done many owner finned deals and for all of them I used a real estate agent, mainly for their great contract and E&O insurance (I like using an agent but you definitely do not have to).

You also are relying on appreciation if you want to do a C/O refinance, potentially limiting how much cash you can get out.