> ## Content Index > Fetch the complete content index at: https://relocationecosystem.com/llms.txt > Use this file to discover other available public pages before exploring further. # Moving Weight: How Gross, Tare and Net Shipment Weight Work - URL: https://relocationecosystem.com/shipment-weight-guide/ - Published: 2026-09-04T12:21:15.000Z - Updated: 2026-09-10T01:21:00.000Z - Description: A practical guide to gross, tare and net moving weight, certified scales, weight tickets and how shipment weight can affect interstate charges. - Author: Scott Hampton - Tags: Customer Experience, Operations & Accountability For a covered interstate household-goods shipment under a non-binding estimate whose charges depend on weight, [49 CFR 375.507](https://www.ecfr.gov/current/title-49/section-375.507?ref=relocationecosystem.com) requires the mover to determine shipment weight on a certified scale before assessing charges. Start with the documented measurement, then check the tariff and estimate terms that turn it into a bill. ## Estimated, Measured and Billable Weight The [survey](https://relocationecosystem.com/survey/) may produce estimated pounds for planning and pricing. That forecast is not measured weight. The scale process establishes net shipment weight; the [tariff](https://relocationecosystem.com/tariff/) may then apply a minimum or other quantity rule for a particular charge. Keep those three figures separately labeled. Follow the record: Survey → estimated weight → [weight tickets](https://relocationecosystem.com/certified-weight-ticket/) → net shipment weight → tariff calculation → estimate and final-bill checks. ## The Three Weight Terms [Tare Weight](https://relocationecosystem.com/tare-weight/) is the reference weight of the same vehicle without the shipment being measured, with the required transport equipment accounted for. [Gross Weight](https://relocationecosystem.com/gross-weight/) is the vehicle’s loaded scale weight, including the shipment. [Net Weight](https://relocationecosystem.com/net-weight/) is gross minus tare. For example, 24,600 pounds gross − 18,200 pounds tare = 6,400 pounds net. The gross figure is not the weight of the customer’s goods. [49 CFR 375.509](https://www.ecfr.gov/current/title-49/section-375.509?ref=relocationecosystem.com) permits origin weighing or back weighing after unloading and specifies controls for equipment, people and fuel. The tare and gross measurements must describe a valid pair; a truck’s advertised empty weight is not automatically the required tare measurement. Container shipments use a corresponding container calculation. Shipments of 3,000 pounds or less may use a certified platform or warehouse scale under [375.511](https://www.ecfr.gov/current/title-49/section-375.511?ref=relocationecosystem.com). ## Certified Scales and Weight Tickets Under [49 CFR 375.519](https://www.ecfr.gov/current/title-49/section-375.519?ref=relocationecosystem.com), required weighings need signed weight tickets. A separate ticket is generally required for each weighing, but one ticket may record both when both weighings use the same scale. Check the scale’s complete name and location, weighing dates, labels identifying tare/gross/net entries, vehicle identification, the shipper’s last name, shipment or bill-of-lading number, and weigh master’s signature. True copies of all tickets used to determine shipment weight must accompany the freight bills presented to collect weight-dependent charges. ## Customer Rights Around Weighing [49 CFR 375.513](https://www.ecfr.gov/current/title-49/section-375.513?ref=relocationecosystem.com) gives the customer or other person responsible for paying freight charges the right to observe all weighings. The mover must advise where and when they will occur and provide a reasonable opportunity to attend. For a shipment weighed at origin, [375.517](https://www.ecfr.gov/current/title-49/section-375.517?ref=relocationecosystem.com) permits a reweigh demand after the mover provides billing weight and total charges, but before unloading actually begins. The reweigh weight governs the bill; the rule does not promise the lower of two weights. A decision not to observe a reweigh must be waived in writing under [375.515](https://www.ecfr.gov/current/title-49/section-375.515?ref=relocationecosystem.com). For collect-on-delivery shipments, ask for advance notice of actual weight or volume and charges and provide contact details. [375.521](https://www.ecfr.gov/current/title-49/section-375.521?ref=relocationecosystem.com) generally requires one full 24-hour day’s notice before tender of delivery, excluding weekends and federal holidays, when the customer requests it; the rule lists exceptions, including back weighing. ## Keep weight units, vehicle ratings and loading space separate [CWT / Hundredweight](https://relocationecosystem.com/cwt-hundredweight/) explains a rate per 100 pounds. [GVW and GVWR](https://relocationecosystem.com/gross-vehicle-weight-gvw-gvwr/) distinguish actual vehicle weight from the manufacturer’s rating. [Tier](https://relocationecosystem.com/tier/) explains practitioner shorthand for a section of loading space. None of these labels alone establishes the customer’s net shipment weight or final bill. ## Weight Is Not the Same as Volume [Volume](https://relocationecosystem.com/volume/) describes how much physical space goods occupy. [Weight](https://relocationecosystem.com/weight/) describes their mass. Both can matter operationally, but they are not interchangeable. [Shipment Density](https://relocationecosystem.com/shipment-density/) connects weight and volume as a ratio. [Cube / Shipment Cube](https://relocationecosystem.com/volume/) should identify the stated volume and measurement assumptions; [Trailer Space](https://relocationecosystem.com/capacity/) describes an equipment allocation. [Load Planning](https://relocationecosystem.com/load-planning/) combines these inputs with handling and delivery requirements. Keep each figure labeled rather than treating a space estimate as a scale result. ## How the Tariff Turns Weight Into Charges The applicable tariff defines the calculation: for example, a distance and weight band, dollars per hundredweight (CWT, or 100 pounds), minimum weight, packing units, storage periods or added services. Request the tariff name, effective date and item numbers behind the charges. A rate or discount percentage alone does not explain the total. **Invented illustration:** at $75 per hundredweight, 6,400 billable pounds produces 64 × $75 = $4,800 for that transportation line. This is not a real tariff or market quote. A minimum, applicable discount or separately charged service can alter the result. See [Tariff](https://relocationecosystem.com/tariff/) for an example separating measured weight, a billable minimum, a discount and packing charges. For covered tariff terms incorporated into the contract, [49 CFR 1310.4](https://www.ecfr.gov/current/title-49/section-1310.4?ref=relocationecosystem.com) provides notice and free access to the incorporated terms on request. Ask the mover to show the calculation using those terms. ## Check the Estimate Before Treating Weight as the Price A binding estimate fixes the price for its described scope subject to applicable change rules; it does not automatically rise or fall with measured weight. A non-binding estimate is reconciled under the applicable tariff and actual shipment and services. An express lower-of-actual-or-maximum offer must be read on its own terms. See the [Moving Estimates guide](https://relocationecosystem.com/moving-estimates-guide/). The final lawful bill and the amount collectible at delivery are different questions. A tariff reference or higher scale weight does not remove applicable delivery-collection limits. Retain the [estimate, bill of lading, tickets and written scope changes](https://relocationecosystem.com/moving-documents-guide/) together. ## Questions to Ask - Is this move priced by actual weight, estimated weight, volume, time, or another tariff method? - Will the shipment be weighed on a certified scale? - Can I observe the weighing? - How do I receive copies of the weight tickets? - What are the tare, gross, and net weights? - How does the actual weight affect the final charge? To understand how a weight figure affects a quote, read [weight-based moving quotes compared with hourly, distance and cubic-foot pricing](https://relocationecosystem.com/moving-quote-pricing-methods/). The guide distinguishes forecast pounds from measured weight and explains how the estimate’s commitment affects the price. ## Primary Sources - [FMCSA — Pickup of My Shipment of Household Goods (Subpart E)](https://www.fmcsa.dot.gov/protect-your-move/how-to/subpartE?ref=relocationecosystem.com) - [FMCSA — General Requirements (Subpart A)](https://www.fmcsa.dot.gov/protect-your-move/how-to/subpartA?ref=relocationecosystem.com) - [FMCSA — Protect Your Move Glossary](https://www.fmcsa.dot.gov/protect-your-move/glossary?ref=relocationecosystem.com) [**Explore more Moving & Relocation Help →**](https://relocationecosystem.com/help/) *The Relocation Ecosystem provides educational information and does not provide legal advice. Pricing and weighing requirements depend on the move and applicable rules.*