The Fond du lac city manager says the city’s debt service will be driving next year’s budget. City manager Joe Moore presented a 2015 budget overview at Wednesday night’s city council meeting. "I think the overall tax levy for the city needs to increase between four and five percent," Moore said. "That's driven by net new construction, in other words, new buildings that have been built around the city." Moore says the city's debt is going down but the city's debt payments for the next three years are going up. Moore says small tax increase is necessary to maintain existing programs and services.