Installment lenders offer annual percentage rates that range from 36% to 100% or perhaps higher. Payday loans typically have APRs of 350% or more. "Installment loans are a much safer structure," said Martin Eakes, the co-founder and chief executive of Self-Help Credit Union and the Center for Responsible Lending, who has fought battles with payday lenders in Arizona, Colorado, North Carolina, Ohio and Washington.