Submitting the returns in a timely manner is essential to flee IFTA costs and penalties. A fee of $50.00 or 10% of the taxes due (whichever is higher ) will be levied if IFTA taxes are not paid on time. You will find various causes of this including filing records late, failing to document in addition to underpayment of taxes owed. https://www.etrucks.com/ifta-audit-tips/