The cleanest way to handle IFTA refunds is to record them as a reduction of your fuel expense, not as other income. When you get a refund, it means you overpaid fuel tax relative to the miles you drove in certain jurisdictions. That overpayment was already sitting in your fuel expense account, so the refund belongs there too. Booking it as other income inflates both your fuel costs and your revenue, which makes your cost-per-mile calculations misleading.

In QuickBooks, create a sub-account under your fuel expense account called something like “IFTA Refunds” or “Fuel Tax Adjustments.” When the refund hits your bank account, categorize the deposit to that sub-account. Your fuel expense parent account will net out correctly, showing your true fuel cost after tax adjustments. When you owe money on an IFTA filing, record the payment to the same sub-account so all IFTA activity lives in one place.

The harder part is tracking fuel purchases with enough detail to file accurately and reconcile back to your books. Every fuel receipt needs the jurisdiction where fuel was purchased, the number of gallons, the price per gallon, and the tax paid. Most fleet card programs like Comdata or EFS capture this automatically. If your drivers use regular credit cards, someone has to pull that detail from receipts manually and it’s easy to fall behind.

Set up a simple spreadsheet or use your fleet management software to log fuel purchases by state and by quarter. When you file your IFTA return each quarter, the data should tie back to what’s in your books. If your total fuel purchases in QuickBooks for the quarter don’t match what’s on your IFTA filing, something got miscoded or missed. Reconciling these two numbers every quarter catches errors before they compound.

For federal fuel tax credits claimed on your annual tax return, the treatment is similar. The credit reduces your effective fuel cost, so it should offset fuel expense rather than show up as miscellaneous income. Your tax preparer will handle the actual credit on your return, but your books should reflect the economic reality throughout the year.

If you’re running multiple trucks across dozens of states, this tracking gets complex fast. A freight and logistics bookkeeper who understands IFTA reporting can set up your chart of accounts and tracking systems so the quarterly filing is straightforward instead of a scramble. The goal is having clean fuel data organized by jurisdiction so your IFTA preparer isn’t guessing and your books stay accurate.

One common mistake is ignoring IFTA entirely in the books until tax time. You file your quarterly IFTA returns, pay or receive refunds, and none of it gets recorded properly. By year end your fuel expense is off, your tax preparer has to untangle it, and you don’t really know your true operating cost per mile. Phoenix bookkeepers who work with trucking companies can build this into your monthly bookkeeping routine so nothing slips through the cracks.