It will also depend on your area and the cost of living. There are plenty of jobs/careers that don't see pay raises every year so some parents may have an issue with their dc fee raising every year. I don't know of many dcprovider's in my area that raise fee's yearly so FOR ME, I am not willing to risk losing a parent over a $1/day to a cheaper hdc or even a centre. $1/day/child is a big raise for some areas(at least compared to the raises I used to get when I worked out of the home). This is why I choose to raise rates for new families only, this way they can budget for daycare and it will never change. Most families will only be in my care for 1-4 years anyways.
However, if you can find parents to pay your fee's and increase it yearly than great!! Nothing wrong with that I do have a question for those that do the $1/day/child/year increase...will you ever have a number that you top out at? Or just continue for as many years as you can?