Illinois officials say the number of electronically filed income tax returns is up more than 10 percent over last year.
The Department of Revenue has received more than 2 million returns electronically and paid more than $377 million in refunds.
Officials say refunds due to online filers will be paid in about a week.
E-filing returns and using direct deposit on refunds saves money on processing and speeds refund payments.
The Revenue Department maintains an online list of volunteer tax assistance centers across the state that can help in filing returns.
The state maintains an interactive filing program called WebFile. But taxpayers can ask their preparers to electronically file their returns or commercially available tax-preparation packages offer online filing.