IFTA Audit Preparation

IFTA audits occur every 3-5 years for active carriers. Preparation determines outcome — penalties are usually small if records are complete; large if records are missing.

When you're selected

• Letter from base state's DOR/DMV
• Typically 30 days notice
• May target specific tax year(s)
• Quote: "We will examine your records for IFTA reporting accuracy."

Records to produce

• Quarterly IFTA returns for the audit period (you already filed these)
• Fuel receipts (every purchase, by date + state)
• Mileage records (state-by-state breakdown)
• Vehicle records (VINs, license plates, gross weight)
• Trip sheets if used (driver-recorded journey data)
• ELD or GPS data if available
• Tax-paid fuel logs for tax-paid purchases

Audit procedure

1. Initial meeting: explanation of scope + records request
2. Records review: auditor examines your filings + supporting docs
3. Sample selection: typically 3-12 months sampled in detail
4. Reconciliation: comparing your reported miles vs records (ELD + GPS)
5. Findings: discrepancies identified
6. Determination: refund OR additional tax owed (interest + penalty)

Common audit findings

• Reported miles vs actual miles mismatch
• Fuel receipts missing or duplicated
• Tax-paid fuel inadvertently double-counted
• Personal use miles included in IFTA reporting
• Out-of-route miles unaccounted

Typical penalties

• No errors: no penalty (rare)
• Minor errors (< 5% variance): warning + correction
• Significant errors (5-20% variance): additional tax + interest
• Egregious errors or fraud: tax + interest + penalty (10-50%)
• Criminal: very rare, but possible for intentional fraud

How to prepare proactively

• Maintain quarterly IFTA reconciliation (don't wait for audit)
• Keep receipts organized by date and state
• Verify mileage from ELD against fuel receipts
• Address fuel card discrepancies immediately
• Save all trip-by-trip records for 4 years (IFTA requires 4-year retention)

Compass IFTA module

• Connects to fuel cards (WEX, Comdata, EFS, Fleet One Edge) for auto-pull
• Connects to ELDs for mileage data
• Generates quarterly returns
• Pre-builds audit-ready data export
• Flag mileage-fuel discrepancies

CFR citations

• IFTA Articles of Agreement
• IFTA Audit Procedures Manual

How Compass surfaces this

Searchable in Compass Ask. Runs against carrier fleet data when invoked from the relevant tracker. Read-only; no actions without explicit user approval.

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X3 Compass turns these skills into a complete operational platform: driver qualification files, drug & alcohol consortium, MVR pulls, hours-of-service tracking, hazmat shipping, IFTA filing, FMCSA audit prep, and DataQ dispute drafting — all CFR-cited, all in one place.

This skill is published under the X3 Compass open skills initiative. Contributions welcome at https://github.com/x3fleetsafety/skills