According to the State of Arkansas, Individual Income Tax liabilities can now be paid by Credit Card. "These credit card transactions are made through the Official Payments Corporation. The Credit card payments may be made over the telephone by calling 1-800-272-9829 or over the internet by visiting www.officialpayments.com
and clicking the Payment Center Link."
The State of Arkansas has stated that "Taxpayers who filed either by mailing a paper tax return, or using e-file may use the credit card payment option." Further, the State of Arkansas also allows the credit card option to be used for any previous Individual Income Tax debts owed by taxpayers regardless of the tax year.
Unfortunately, this service is not available for Estimated Tax Payments at this time.