Seller Financing - Amortization Schedule

[John Paul Whaley]

I am thinking about submitting an offer on a home in my area, and want to have the “seller financing” card in my back pocket. I’m trying to run some numbers on the deal if I were to offer zero down and zero interest, but what if I were to factor interest into the equation?

For example, if the seller would only accept an offer if I included 4% interest, would my payments then increase by 4% each month with the same amount going towards the principal and an additional 4% being paid in interest? Or does it amortize like a traditional mortgage where my payments are 99% interest starting out, and slowly adjust to start paying more and more of the principal?

Let me know if that question even makes sense, I tried to word it as best I could. 

Thanks in advance!