If your business sells a pair of socks in Denver, you add city sales tax to the purchase. If your business buys equipment for its Denver site, you pay city use taxes on the purchase.
None of this usually is controversial. Unless the product being bought and sold is software.
If it’s software, you get companies taken by surprise when Denver city auditors show up at their door, then outrage and talk of tech companies fleeing the city.
That’s because most cities — as much as 70 percent of them,…