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Fuel Surcharge Calculator

Diesel goes up, your margin goes down. Bill the difference correctly.

Screen fuel surcharge per mile and total dollars on a load using three local planning patterns: standard formula, step pattern, and flat percent of linehaul. The app shows side-by-side outputs, an effective-rate chart, and source-boundary warnings tied to EIA diesel-price context. These are not carrier, broker, shipper, or DAT rate matrices, and the result is not invoice approval. Verify the rate confirmation, master transportation agreement, fuel addendum, paid-mile denominator, rounding, taxes, and settlement terms before billing.

Pro Tip: Treat the output as a worksheet for contract review, not a settlement decision. Before using a number on a quote or invoice, match the current diesel price to the contract index and date, confirm the base price and MPG, check whether FSC is paid on loaded or all miles, and compare the step or flat-percent terms to the written fuel addendum. PDF and CSV exports carry source-boundary warnings so the assumptions travel with the estimate.

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Fuel Surcharge Calculator

How It Works

  1. Pick the program type

    Choose standard formula, step pattern, or flat percent of linehaul. These are local planning patterns only; the written contract controls the actual program.

  2. Enter current and base diesel prices

    Use the contract index and date, an EIA national or regional on-highway diesel price, a fuel-card record, or another price basis named in the agreement. The base diesel value is also a contract term, not a universal default.

  3. Enter truck MPG

    Use the MPG specified by the program or a route-specific weighted planning MPG. A lower MPG increases the standard formula output, so this value needs contract or fleet-record support before billing.

  4. Enter loaded miles, total miles, and FSC paid-on basis

    Total miles = loaded plus deadhead. FSC Paid On determines the basis: most contracts pay FSC on loaded miles only, but some pay on all miles run for the shipper including deadhead to and from the pickup. Read the contract carefully.

  5. For step patterns, enter the interval and rate

    Step interval, step rate, base price, and rounding are private program terms. Enter them from the rate confirmation or fuel addendum before relying on the comparison.

  6. Read the side-by-side reference table

    The reference rows are generic pattern checks, not branded rate tables. Use them to spot assumptions that deserve contract review, then verify the actual written program before quoting or billing.

Built For

  • Owner-operator screening a load against a written FSC program before accepting the rate
  • Carrier or 3PL contract review comparing a proposed FSC program against a standard formula estimate
  • Accountant or controller preparing questions before checking an FSC invoice line against the contract
  • Owner-operator testing linehaul-only pricing when diesel is rising
  • Hot shot operator setting their own FSC for direct-customer bidding on Permian or Bakken work
  • Broker or dispatcher explaining an FSC assumption while keeping the contract terms visible
  • New owner-op understanding why their take-home dropped when diesel jumped from $4 to $5 even though the load board rate did not change

Features & Capabilities

Three Planning Patterns

Standard per-mile formula, step pattern, and flat percentage of linehaul. Switch between them with one click while keeping the same source-boundary warnings.

Side-by-Side Pattern Comparison

Generic reference rows show how different assumptions move the estimate on the same load. They are not carrier, broker, shipper, or DAT rate matrices.

Effective Rate Chart Across Diesel Range

A line chart shows how the effective $/mile (linehaul + FSC) rises with diesel price from $2.50 to $6.00. A horizontal dashed line marks the without-FSC rate. The current diesel price gets a marker. Use it to communicate fuel risk to a customer or driver.

Margin Protection Output

Tells you in dollars per mile and total per load how much margin the FSC is protecting. A heavy FSC ($0.50 per mile or more) is real money against fuel volatility. A light FSC ($0.10 per mile or less) is symbolic.

Verdict Tier Coloring

No FSC, Light, Standard, Heavy, and Severe tiers based on the FSC per mile output. Helps you communicate FSC magnitude to customers and dispatchers without quoting raw numbers.

Tier-1 Branded PDF Export

Full FSC report including the comparison table, source pointers, source-boundary warnings, methodology, and inputs. Useful for explaining assumptions without turning the estimate into contract approval.

Comparison

Program Formula Common Use Pays Carrier Best When
Standard Formula ($current - $base) / MPG Planning estimate when contract terms match Base price MPG and diesel index are verified
Step Pattern floor(($current - $base) / step) x $/mi Private fuel addendum or rate table Step interval rate and rounding are verified
Flat Percent % x linehaul revenue Private linehaul-based FSC term Linehaul inclusions and exclusions are verified

Frequently Asked Questions

The common per-mile planning formula is FSC ($/mi) = (current diesel - base diesel) / truck MPG. At $4.20 current, $1.25 base, and 6 MPG, the estimate is $2.95 / 6.0 = $0.49 per mile. The base price, diesel index, MPG, rounding, and paid miles must come from the contract or program terms before billing.
Because program design controls who absorbs fuel volatility. Base price, step interval, rounding, MPG, paid miles, linehaul exclusions, taxes, and settlement language can all change the output. This screen helps compare assumptions, but the written agreement controls the actual FSC.
Use the price basis named in the contract. It may be the EIA national average, a regional EIA or PADD price, a fuel-card index, a pump record, or another negotiated source. The app default is static and must be replaced before quoting or invoicing.
It depends on the agreement. Some programs pay loaded miles only, some pay all miles run for the shipper, and some handle empty miles separately. Confirm the paid-mile denominator in the rate confirmation or fuel addendum.
The standard formula divides the diesel-price spread by MPG, so a lower MPG produces a higher per-mile estimate. Use a contract MPG, fleet-record MPG, or route-specific planning MPG that can be supported before relying on the result.
Disclaimer: This is a planning-level fuel surcharge estimate built from the inputs you enter, not a rate quote or a contract term. Actual surcharge revenue is set by the written rate confirmation or fuel addendum, the published index (such as the DOE weekly diesel average), and the paid-mile definition in your agreement; verify every program against those documents and your own operating records before bidding or invoicing. This tool is not a substitute for the signed agreement or professional accounting review.

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