When Mary Coffman and her husband moved to Overland Park from Oklahoma City in 2014, they found a comparable home – and expected their property taxes to be about the same, too.

They were wrong.

The retirees went from paying around $2,600 a year in Oklahoma to $3,200 in Kansas. Six years after their move, Coffman said they’re handing over $5,600 a year, more than double their Oklahoma tax bill.

(Read more: Politics & Government News |)