DescriptionUse your mouse or Tab key to move through the fields. Use your mouse or space bar to enable check boxes. Illinois Department of Revenue Payment Coupon (IL-501) and Instructions If you are assigned to the semi-weekly schedule, you must pay electronically. Do not use this form. may pay more frequently using one of our electronic methods or a Payment Coupon (IL-501). Do not use your return, Form IL-941, to pay more...
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