Charging interest for late accounts

I’m curious if anyone has implemented a policy of charging interest when your clients are late to pay.

Please let me know if you have considered this, and if you’ve implemented it how that has worked out!

Hi Doug,
I include a couple of sentences in their invoice about the interest rate and their due date. Then I email them couple of times reminding them about their payment due if it hasn’t been paid already. After that I will charge them a certain percentage.

Have thought about it but, honestly, it’s too much to manage it. I keep cc numbers on file. Most people have no problem with it. Still have a few who don’t but they usually pay in a timely fashion.