how to compare selling for cash or financing the buyer

[Benjamin Cowles]

Selling your home cash vs seller financing.  A mortgage you create eventually ends where a rental contract could last forever. Are there formulas to compare those values?  Besides obviously using your cash reserves to determine how much cash you'll require and how much rental investing you plan on doing, is there a formula/rate like a cap rate that factors in the life of an asset? Is there some basic fundamental I've just not learned yet? What term(s) ought I google? Please enlighten me.  Thanks.