If you sell a property and carry the note, hire a third party to service your account. They can collect the monthly payments, insurance premiums and property taxes. They can deal with your borrower on late payments. They can keep an accurate amortization schedule for you. And, should you decide to sell your note, you can provide a professional accounting of your transaction. If you like bookkeeping – and are good at it – then do it yourself. Otherwise, hire someone else and pay the small fee. You will be happy you did.