It’s estimated that about a billion dollars in tax refunds go unclaimed each year, but a statewide service is helping folks get back their money – free of charge. Hundreds of volunteers across Minnesota are offering free preparation of basic state and federal returns through the AARP Foundation Tax-Aide program. Coordinator Judy LaBroffe says all the volunteers have training and the latest tools. The free assistance is available to all, but the main focus is on helping low-income and older Minnesotans. Information on the roughly 200 locations across the state for those who need help is online at www.aarp.org.