Austin’s proposed fiscal year 2015-16 budget is $3.5 billion—about $39 million more than last fiscal year, with a tax rate of 48.14 cents per $100 of valuation, said Ed Van Eenoo, the city’s deputy chief financial officer. The proposed tax rate would be an increase from the current tax rate of 48.09 cents, with a monthly tax increase of about $11.30 for the typical customer, he said. The budget must be approved by City Council no later than Sept. 10.