Those looking to retire on a budget may want to look no further than San Antonio, according to a new study by personal finance website GoBankingRates. After running numbers, GoBankingRates researchers determined that seniors can retire on a little more than $47,000 annually in the Alamo City, making the nation's No. 27 best place to retire. “Housing costs are almost 25% less than the national average, at $14,248.36 per year,” the study said.