All Shipping Glossary Terms
BAFCharges & Tariffs

Bunker Adjustment Factor

Definition: A floating ocean freight surcharge that fluctuates based on global marine fuel oil (bunker) price variations.

Detailed Freight Guide & Operational Context

The Bunker Adjustment Factor (BAF) is a periodic surcharge added to base ocean freight rates to compensate shipping lines for volatile fuel price changes.

Bunker fuel (very low sulfur fuel oil / VLSFO and marine gasoil / MGO) represents one of the largest single operating cost components of container shipping.

BAF calculations consider average fuel market prices, trade lane distance, vessel fuel consumption metrics, and environmental regulations such as the IMO 2020 sulfur cap and European Union Emissions Trading System (EU ETS).

Real-World Example in Practice
A Transpacific contract sets base freight at $1,800/FEU with a quarterly floating BAF of $420/FEU, adjusting automatically if Singapore bunker prices move above $600/MT.

Frequently Asked Questions about BAF

What is BAF in shipping?

BAF stands for Bunker Adjustment Factor, a surcharge applied by container shipping lines to cover fluctuations in the cost of ship fuel.

How often does BAF change?

BAF is typically adjusted on a monthly or quarterly basis according to published carrier fuel pricing indices.

Recommended Tool

GLEC Carbon Calculator & Emissions

Calculate rates, manage risks, or track shipments related to BAF.

Open GLEC Carbon Calculator & Emissions

Related Shipping Terms

General Rate Increase

GRI

Terminal Handling Charge

THC

Full Container Load

FCL

Track Live Containers

Monitor live container milestones, Last Free Day, and port rotations across 100+ ocean carriers.

Start Tracking