Jackson, 48, will be sentenced July 3, pleading guilty after investigators discovered he had used about $750,000 in campaign funds to make personal purchases. He resigned his U.S. House of Representatives seat in 2012.
In a filing in federal court his lawyers said he has no income other that Social security payments and a federal pension.
"If he serves this period of incarceration first, Mrs. Jackson would be able to work and could stabilize the family's finances," the filing said.
Sandi Jackson pleaded guilty to filing false tax returns and will be sentenced July 3 as well. In a court filing, her lawyers requested she be given probation.
They have two children, 9 and 13, the Chicago Tribune reported.