How to Use This Tool
Allocate fixed and per-shipment surcharges across units and base freight. Calculate total freight accessorial cost, surcharge per unit and percentage uplift over base freight for a shipment plan.
The decision this tool supports
Quotes can look comparable on line-haul price while appointment, liftgate, detention or residential surcharges drive the real difference. This page keeps the decision bounded to total accessorial cost and the supporting outputs shown beside it. Accessorial Charge Impact does not import an account, infer a market rate, or silently substitute an industry average.
Inputs and units
The Accessorial Charge Impact calculation uses Shipments, Units moved, Base freight, Fixed accessorial total, Accessorial per shipment. Keep all money values in one currency and all time, distance, mass, energy or volume entries in the unit printed beside the field. Mixing Accessorial Charge Impact scopes can produce a plausible number with the wrong meaning.
- Shipments is entered in shipments.
- Units moved is entered in units.
- Base freight is entered in currency.
- Fixed accessorial total is entered in currency.
- Accessorial per shipment is entered in currency/shipment.
Formula and worked check
Accessorial cost = fixed accessorials + shipments × per-shipment accessorial; uplift = accessorial cost ÷ base freight. Twelve shipments with $900 fixed and $75 each create $1,800 accessorials, $0.75 per unit and 25% uplift on $7,200 base freight. The Accessorial Charge Impact default is an executable known-answer case, not a benchmark or recommendation. Change one input and verify that the direction of total accessorial cost still matches the stated relationship.
How to interpret the result
Use per-unit impact in landed margin analysis and uplift to compare carriers on a common base-freight denominator. The additional Accessorial Charge Impact outputs expose the denominator, comparison, capacity or reverse value needed to audit the primary result instead of presenting one unexplained number.
Assumptions
- Shipment count matches the per-shipment charge basis.
- Units moved are the allocation denominator.
- Base freight excludes the entered accessorials.
Save the Accessorial Charge Impact input values and date with any material decision. A later Accessorial Charge Impact rerun is reproducible only when the same assumptions and units are available.
Limitations and safety boundary
It does not determine which carrier rules trigger a surcharge or model taxes, fuel surcharge, reweighs and disputed charges. Accessorial Charge Impact is an estimate and cannot replace a contract, local code, licensed professional, calibrated measurement, lender statement or platform report where one governs the decision.
Source and privacy
The Accessorial Charge Impact definition or rule was checked against U.S. Small Business Administration — Manage your finances on 2026-08-26. Recheck U.S. Small Business Administration — Manage your finances when a specification or policy behind Accessorial Charge Impact can change. Accessorial Charge Impact arithmetic runs in this browser tab; ecech does not receive the values through a calculation API.
Sources & assumptions
Tool Spec v2 · verified 2026-08-26. Platform rules and fees can change; the editable inputs remain authoritative for your account.
Official references
- U.S. Small Business Administration — Manage your finances (checked 2026-08-26)
Model assumptions
- Shipment count matches the per-shipment charge basis.
- Units moved are the allocation denominator.
- Base freight excludes the entered accessorials.
- It does not determine which carrier rules trigger a surcharge or model taxes, fuel surcharge, reweighs and disputed charges.
