William S. Campbell, CFP, MBA, and Justin D. Smith, CFA, CFP, are partners at Slayton Lewis Wealth Management and authors of the upcoming book "Boomer-Bust: How to Retire Without Going Broke," which presents a timely look at the retirement hurdles faced by baby boomers as they enter their golden years.Determining whether or not a married couple is eligible to file and suspend prior to the cutoff date involves a number of complicated calculations, so they have created an online calculator to help identify households at risk of losing potential benefits.