Not surprisingly, fuel costs are now top-of-mind. Most shippers think of fuel surcharges as a temporary fluctuation; something that rises and falls alongside diesel and jet fuel prices. But recent data tells a vastly different story.

Fuel surcharges don’t just respond to market conditions. Increasingly, they’re being used to reset the baseline cost of shipping itself. And once that baseline moves up, it doesn’t necessarily come back down.

We examined the real-world impact that fuel surcharge changes were having on our customers and uncovered some trends that indicate just how important it is to have true visibility into your shipping expenses, so you can recognize when these changes are made and take steps to mitigate the very real cost increases coming your way.

To understand what’s really happening, it helps to separate fuel surcharge impact into two distinct drivers: fuel price fluctuations and carrier changes to fuel surcharge tables.

The Visible: Fuel Price Increases

Fuel price volatility has a direct and measurable impact on shipping costs. Based on our analysis, across hundreds of shippers:

  • Every $0.09 increase in diesel raises total ground shipping costs by ~0.16%
  • Every $0.05 increase in jet fuel raises total air shipping costs by ~0.15%

These incremental changes add up quickly. Looking at a recent real-world scenario. Since the start of the Iran conflict:

  • Ground shipping costs have increased ~2.88%
  • Air shipping costs have increased ~4.5%

For a shipper spending $40M annually ($20M ground and $20M air), that translates to an additional:

  • +$576,000 in ground shipping costs
  • +$900,000 in air shipping costs

This is the part most organizations see and react to, but the reality is that it’s only half the picture.

The Hidden: Carrier Table Adjustments

The fuel costs passed along to shippers aren’t just tied to fuel prices, however. They’re governed by carrier-defined tables that determine how those prices translate into percentage-based fees. And those tables change at the carriers’ discretion. 

We found in our analysis that every time a carrier increases its fuel surcharge table by just 1%, the impact is significant:

  • Ground shipping costs increase by ~0.64%
  • Air shipping costs increase by ~0.59%

Looking again at our $40M shipper, that’s roughly:

  • +$240,000 in annual shipping spend per 1% increase

In 2026 alone, carriers have already made multiple adjustments. Two increases of this kind can add hundreds of thousands in annual cost, without any corresponding change in shipping volume.

Unlike fuel price spikes, these changes are easy to miss. But their impact is just as real, and often more durable.

Fuel Surcharges Are Resetting the Floor

The fact is, fuel surcharge tables don’t just move up with fuel prices; they’re being restructured in ways that raise costs even when fuel prices fall.

Recent changes illustrate this clearly. Carrier updates have expanded surcharge tables upward to account for the impact of the conflict in Iran and even higher potential fuel prices. But more importantly, we’ve already seen one carrier quietly increase surcharge percentages at lower fuel price bands, something that at any other time would be difficult to slip by.

In practical terms, that means:

  • When fuel prices rise, costs go up (as expected).
  • When fuel prices fall, costs don’t return to previous levels, as the “floor” has been reset.

Because these adjustments are embedded in complex surcharge tables (not in headline rate increases), they often go unnoticed until the financial impact is already felt.

Why Do These Changes To Fuel Surcharges Matter?

Fuel surcharges have always been a way for carriers to manage volatility. What’s changed is how they’re being used. Instead of purely reacting to fuel markets, carriers are increasingly leveraging fuel surcharges, and accessorials more broadly, as a strategic revenue lever.

As you’ve likely already seen, this shift has several implications:

  • More frequent adjustments (often multiple times per year)
  • Less visibility compared to base rate increases
  • Compounding cost impact over time

In other words, what looks like a short-term fluctuation can quickly become a long-term, permanent cost increase.

What Should Shippers Be Doing Differently?

If fuel surcharges are no longer temporary, they can’t be managed reactively. Shippers need to take a more proactive, data-driven approach. Actions include:

  • Model blended fuel exposure — don’t just track current fuel prices; understand what your costs look like across different price scenarios, especially as diesel moves back toward lower ranges.
  • Monitor surcharge tables, not just indexes — weekly fuel changes matter, but structural table changes often have a bigger long-term impact.
  • Quantify the true cost of carrier adjustments — even small percentage changes can translate into six-figure annual increases.
  • Incorporate fuel dynamics into forecasting and strategy — budgeting based on historical reversion assumptions is no longer sufficient.

Fuel surcharges were once viewed as a variable, external factor — something outside a shipper’s control. Now, they’ve become a structural component of carrier pricing, capable of driving sustained increases in shipping spend regardless of where fuel prices go next. Understanding that shift is the first step toward managing it.

If you’re not actively modeling how fuel surcharges change your total spend, you’re likely underestimating your shipping costs. Greater visibility into these dynamics can help you identify risk, uncover savings opportunities, and make more informed decisions about your parcel strategy.

Reveel provides shippers with real-time cost visibility and detailed surcharge monitoring, allowing them to anticipate and manage carrier pricing changes. If you want to understand how these updates will specifically impact your bottom line, schedule a demo, and we will model the effects for you.