Spain 52 Week Bill Yield was -0.50 percent on Friday August 23, according to over-the-counter interbank yield quotes for this government bond maturity. 52 Week Bill Yield in Spain averaged 0.83 percent from 2010 until 2019, reaching an all time high of 6.08 percent in November of 2011 and a record low of -0.55 percent in August of 2019. This page provides – Spain 12 Month Letras Yield- actual values, historical data, forecast, chart, statistics, economic calendar and news.