State sales tax
5% state, local set by city/county
North Dakota sets the state rate at 5% and leaves the local add-on entirely to each city and county, with no statewide percentage ceiling on how high it can go. Combined rates commonly run 5% to 7.5%, and a few jurisdictions, Grafton among them, combine city and county tax into a rate near 8.75%. Some cities, Fargo included, cap the local tax due on a single large sale in dollars rather than a percentage. Storeveu sets your state-level rate once and lets each store carry its own local override, so a Fargo location and a rural one both ring correctly on the same platform.