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Last updated: May 2026 · California IFTA rates current for 2Q 2026
California · 97.1¢/gal

California IFTA Calculator 2026 — Diesel Tax

California's diesel tax rate is 97.1¢ per gallon (2Q 2026).

Calculate Your California IFTA Tax

California IFTA Rates & Trucking Overview 2026

The rate includes a state excise component plus a variable portion indexed to diesel prices. For every gallon you consume in California but didn't buy there, you owe the difference through IFTA.

Major California Trucking Routes

I-5 (Pacific Coast Spine): Oregon border to LA to San Diego/Mexico. Highest-volume freight corridor in the western US, especially from LA Basin north through the Central Valley.
I-10 (East-West): Arizona border through Indio, Los Angeles. Port of LA/Long Beach container freight moves on this corridor.
I-15: Nevada border south through Barstow, San Bernardino to San Diego. Main entry from Nevada.
I-80: Nevada border through Sacramento to the Bay Area. Main northern entry.

California IFTA — Frequently Asked Questions

What is the California IFTA diesel tax rate in 2026?
California's IFTA diesel tax rate for 2026 is 97.1 cents per gallon. California's rate includes a state excise tax plus a variable excise component tied to diesel prices, so it can change between quarters.
Does California have additional trucking fees beyond IFTA?
Yes. California has CARB emissions compliance requirements (Clean Truck Check), DMV weight fees, and potential CA Highway Use Tax obligations. These are entirely separate from IFTA — which only covers fuel tax. CARB non-compliance fines can far exceed any fuel tax savings.
Who handles California IFTA registration?
California IFTA registration and quarterly filing is handled by the California Department of Tax and Fee Administration (CDTFA) at cdtfa.ca.gov. CA-based carriers receive CA IFTA credentials and file quarterly returns online. Due dates: Q1 April 30, Q2 July 31, Q3 October 31, Q4 January 31.
Related Calculators
Full IFTA Calculator
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IFTA Rates 2026
All state rates
Fuel Cost 2026
Per trip fuel cost
Load Profitability
Net profit per load

California Quick Reference

CA diesel tax 2026→97.1¢/gal
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