Binding Estimate vs Non-Binding Estimate: What Each Means for Your Final Moving Bill

When a moving company gives you a price, that number can mean two very different things depending on the estimate type. A binding estimate sets a guaranteed price. A non-binding estimate is a guess.

Federal law (49 CFR Part 375) requires interstate movers to provide one of these estimate types before loading your belongings. The estimate type determines whether you can be charged more at delivery, how much more, and what recourse you have if the final bill surprises you.

But here is what most consumer guides do not tell you: neither estimate type fully protects you from price increases at pickup. Under 49 CFR 375.403(a)(6), if the carrier or broker claims you have more goods than the estimate covered, they can issue a new binding estimate on the spot, before loading. This is the mechanism behind the bait-and-switch pattern that appears in the majority of moving fraud complaints. A low estimate gets you committed, then a new, higher estimate replaces it on moving day when you have no alternatives.

A binding estimate sets a guaranteed price under 49 CFR 375.403. The mover cannot charge more than the quoted amount for the goods and services listed in the estimate. If your shipment turns out to be lighter than estimated, you still pay the quoted price. Binding estimates are most common for long-distance moves where the mover conducts an in-home or virtual survey.

However, a binding estimate is not unconditional. Under 375.403(a)(6), if the carrier believes you have tendered additional goods or require additional services not in the original estimate, the carrier is not required to honor the original estimate. Before loading, the carrier can: reaffirm the binding estimate, prepare a new binding estimate (which you must sign), or convert the binding estimate to a non-binding estimate with your written agreement. This provision is the legal basis for the price increase at pickup that dominates consumer complaints. The carrier claims you have more items, issues a new estimate on the spot, and the consumer, with a moving truck at the door and a lease ending, has no practical ability to refuse.

After the bill of lading is issued, additional services require written notice to the consumer and at least one hour for the consumer to decide (375.403(a)(8)). If the consumer requests additional services, a new binding estimate must be signed (375.403(a)(9)).

A non-binding estimate is the mover's best guess based on the information available, governed by 49 CFR 375.405. The final price is determined by actual weight and services. Federal regulations limit the amount a mover can collect at delivery to 110% of the non-binding estimate. Any charges above 110% must be billed within 30 days and you have 30 days to pay.

Some movers offer what they call a 'binding not-to-exceed' estimate, which caps your price at the estimate but allows the final bill to be lower if your shipment weighs less. This is not a category defined in federal regulations, but there is no prohibition against negotiating this term. If a mover offers it, get it in writing as part of the contract.

With a binding estimate, the mover absorbs the extra cost. If they quoted $4,000 and the move actually costs $5,200 in labor and fuel, you still pay $4,000. This is why movers tend to pad binding estimates slightly. They build in a margin to protect themselves from underestimating.

With a non-binding estimate, you are responsible for the actual cost. If the estimate was $3,000 but the actual weight-based cost is $4,500, you owe $4,500. At delivery, the mover can collect up to $3,300 (110% of the estimate). The remaining $1,200 is billed later. You must pay the 110% amount to receive your belongings.

With a binding not-to-exceed estimate, you pay the quoted amount or the actual cost, whichever is lower. If the estimate was $4,000 and the actual cost was $3,400, you pay $3,400. If the actual cost was $4,800, you pay $4,000.

The critical point that most moving guides miss: an estimate is only as strong as the carrier's willingness to honor it.

A binding estimate provides the strongest protection on paper. But the revision provision in 375.403(a)(6) means the carrier can replace it at pickup. In every bait-and-switch case Trunk has documented, the pattern is the same. The broker or carrier provides a low binding estimate to secure the booking. On moving day, the carrier claims the consumer has more goods than estimated. The carrier issues a new, higher binding estimate. The consumer, with no alternatives and a deadline, signs the new estimate. The original estimate is legally superseded.

This is not a loophole being exploited. It is the regulation working as written. The consumer's protection depends entirely on the accuracy of the original estimate, which depends on whether the mover conducted a thorough survey. Phone and video estimates are particularly vulnerable because the carrier can always claim items were not visible during the remote survey.

The strongest consumer protections are: (1) insist on an in-home survey, not a phone or video estimate, (2) get the binding estimate in writing with an itemized inventory, (3) photograph every room before moving day so you can dispute claims of 'additional goods,' and (4) understand that if a carrier issues a new estimate at pickup, you have the right to refuse and cancel, though the practical ability to exercise that right on moving day is limited.

A mover who refuses to put the estimate type in writing is a mover to avoid. Federal law requires the estimate to be written and to clearly state whether it is binding or non-binding.

The most common pattern in FMCSA complaints: a broker gives a low estimate over the phone or via video without an in-person survey. On moving day, a different company (the carrier) shows up, claims the volume is larger than estimated, and issues a new binding estimate at double or triple the original price. The consumer has no time to find an alternative. This is the bait-and-switch, and it is enabled by the estimate revision provisions in 375.403(a)(6).

To protect yourself: always request an in-home survey rather than a phone or video estimate. Get the binding estimate in writing with an itemized inventory. Photograph every room before moving day. If a new estimate is presented at pickup, you have the right to refuse, though you may lose your deposit. Compare at least three estimates of the same type. If one mover quotes $2,500 non-binding and another quotes $3,800 binding, those numbers are not directly comparable.

Ask the mover directly: 'Under what circumstances can this price change after I sign?' If they cannot clearly answer by referencing the estimate revision rules, they either do not know the regulations or do not want you to know them.