A majority of household in 47 states have simplified reporting, eliminates the need to report changes such as someone moving out of the home.
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Previously, households had to report even minor fluctuations in their income and other household circumstances very frequently and were subject to a number of complicated rules. These requirements burdened both states and households, especially working households whose earnings vary frequently.
Simplified reporting was designed to improve food stamp participation rates by reducing these paperwork burdens. Under this option, once a household is certified as eligible for food stamps, it is required to report a change in its circumstances during a six-month period only if the change pushes the household’s income above the Food Stamp Program’s gross income limit of 130 percent of the
federal poverty level. Otherwise the state essentially freezes the household’s benefits for six months
at a time.26 After six months, the state must recertify the household or, if it uses 12-month
certification periods, require the household to submit a short report.
Forty-seven states and the District of Columbia have adopted simplified reporting for a portion of
their participating households, usually the majority of households. Unfortunately, due to an
oversight in the option’s design, states are not allowed to apply simplified reporting to several
categories of households, such as households with only elderly or disabled members and no
earnings, migrant or seasonal farmworker households, and households in which all members are
homeless. For the latter two types of households, states have been allowed to reduce the reporting
requirements.
Page 25 of report
http://www.cbpp.org/files/7-1-08fa.pdf
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also see this report
http://www.fns.usda.gov/sites/default/files/10-State_Options.pdf