Owner financing payments and receipts

[Sean Doherty]

Hey BP I have a question about seller financing payments. I bought a duplex in Rhode Island last November with 10k down and the seller financed the rest. He prefers I mail him the mortgage payment which is easy enough but I'm curious how I can prove payment if needed. I dont get any receipt or statements or anything. I can see the money coming out of my account when he deposits the checks but even though I mail them early he doesn't always deposit them on or before the 1st. Am I leaving myself exposed to the late payment penalties we agreed upon? What if he doesn't deposit the checks at all and says I never paid him, could he foreclose on me?

The seller seems like a really great guy and there Is currently no issues but I'm trying to be safe and think about how things could go wrong.

Also will not having any receipts or statements create issues come tax time?

Thanks for the help.