Binding vs Non-Binding Moving Estimate: Which One Locks the Price?

1. The Three Estimate Types, At A Glance

Federal regulations recognize three written-estimate formats for interstate household-goods moves. Every other variation you might see (online instant quotes, phone projections, cost ranges) becomes one of these three the moment it goes onto a signed document.

• Binding estimate. Defined at 49 CFR 375.403. The price for the listed inventory and services is locked. If you do not change the move, the mover cannot change the price.
• Non-binding estimate. Defined at 49 CFR 375.405. A good-faith projection of cost. The actual price is calculated at delivery based on actual weight times the carrier's published tariff rate. The 110 percent rule (49 CFR 375.407) caps how much you must pay on delivery day.
• Binding not-to-exceed estimate. The hybrid. Price is capped at the estimate, but you pay less if the actual cost comes in under. Some carriers call this a guaranteed price, a price-protected estimate, or a not-to-exceed quote.

These are the only three formats that bind a mover under federal regulations. A glossy PDF with a big number and no estimate-type label has no regulatory force. If a quote does not say which of the three it is, treat it as preliminary, not as a price.

2. Non-Binding Estimate: How It Actually Works

Non-binding is the industry default and the type most likely to surprise customers. The mechanic is straightforward but compounds quickly: the estimate is a projection, the actual price is calculated at delivery, and the 110 percent rule is the only thing standing between you and a much larger bill on the truck.

On the day of delivery, the mover weighs the shipment (most carriers use a certified scale before pickup and after pickup, called the tare and gross weight method). The actual price is the actual weight times the published tariff rate, plus accessorial fees for anything not in the base rate. If that calculated price is at or below 110 percent of the original written estimate, you must pay it on delivery before the crew unloads. If it is above 110 percent, the mover must release your goods after you pay the 110 percent figure, and they have 30 days to bill the balance separately.

That 30-day window is consumer protection most people do not know about. It exists because Congress wrote the rule specifically to prevent hostage-load situations, where movers refused to release belongings until customers paid a sudden inflated total in cash on the spot. If a mover today tells you the truck does not move until you pay everything, regardless of the 110 percent figure, that is a regulatory violation and worth a complaint to FMCSA's National Consumer Complaint Database.

Non-binding works in your favor when the actual shipment ends up lighter than estimated, because you pay the lower actual-weight price with no overage. It works against you when the inventory grows after the estimate, when packing services balloon, or when the original estimate was deliberately low to win the booking.

3. Binding Estimate: When The Price Is Locked

Binding is the format most consumers expect their quote to be, and the format movers offer least often by default. A binding estimate, defined at 49 CFR 375.403, locks the total price for the inventory and services listed on the estimate. If the move on delivery day matches the move on the estimate, the price does not change.

Binding estimates are written based on a real survey: in-home, in-person, or via video walkthrough. A reputable carrier will send an estimator to inventory the contents of every room, note access challenges, and price packing services and bulky items individually. That inventory becomes the binding scope. Anything not on it is potentially out of scope.

The corner case to watch for: change orders. If you add a piece of furniture, change the destination address, request packing on items that were not flagged, or move on a different date, the carrier can issue a written addendum that updates the price. The original binding estimate still binds the original scope. The addendum binds the change. What is not legitimate is unilateral repricing on delivery day with no addendum and no signed agreement, which is sometimes how a binding estimate gets quietly converted into a non-binding one once the truck is loaded.

For a deeper look at the website-side signals that suggest a carrier is comfortable issuing real binding estimates, see what a trustworthy moving company website actually looks like.

4. Binding Not-To-Exceed: The Third Option Most Movers Will Not Volunteer

The binding not-to-exceed estimate is the format the FMCSA literature calls the most consumer-friendly, and the one many movers will not bring up unless asked. The mechanic is simple. The price is capped at the estimate. If your shipment ends up lighter than projected (or if the actual time-and-materials cost comes in lower for an hourly local move), you pay the lower actual amount. You get the upside of a non-binding estimate (savings if you under-ship) plus the protection of a binding estimate (no surprise overage).

Why is it less common? Because pricing risk has to live somewhere. Binding not-to-exceed shifts the upside risk to the customer (you pay less if you under-ship) but the downside risk to the mover (they cannot recover if you over-ship). Carriers that offer it are typically full-service household-goods movers with experienced estimators who can read a home accurately and price it conservatively enough to absorb most variance.

If a mover refuses to offer not-to-exceed, that is not necessarily a red flag. It is a commercial choice. But the willingness to offer it is a strong positive signal about how confident the carrier is in their estimating process and their pricing transparency.

5. The 110 Percent Rule, In Plain English

The 110 percent rule is the single most important consumer protection in the household-goods moving regulations. It applies to non-binding estimates only. The rule, in 49 CFR 375.407, says that on the day of delivery, you cannot be required to pay more than 110 percent of the original non-binding written estimate before the mover releases your shipment.

That does not mean the bill is capped at 110 percent. The actual cost is whatever it works out to be. What is capped is the amount you must pay on delivery day to take possession of your belongings. If the actual cost is higher than 110 percent of the estimate, the mover must deliver the shipment after you pay the 110 percent figure, and then has 30 days to bill the balance.

Three things can break this protection if you are not careful. First, if the original estimate was non-written (for example, only verbal), the 110 percent rule may not apply, because there is no anchor figure for the math. Second, if you signed a change order or addendum that updated the inventory or services after the original estimate, the protection runs against the updated estimate, not the original. Third, if you signed a separate agreement waiving the 110 percent rule (which is generally not enforceable, but unusual paperwork can muddy the situation), you may have unwittingly given up the protection.

The simple rule: keep your original written estimate, dated and signed. That is the document the 110 percent calculation runs against. If a mover claims a higher number on delivery day, you compare it to that document.

6. Bill Of Lading: What Your Estimate Becomes On Moving Day

The estimate is a pre-move document. The bill of lading is the legal contract that controls the actual move. Federal regulations at 49 CFR 375.505 require the mover to give you a bill of lading before loading begins, and it must contain (among other things) the estimate type, the actual or estimated weight, the agreed pickup and delivery dates, the carrier's identification, and the valuation coverage you selected.

Read the bill of lading before signing. The estimate type printed there should match the estimate type on the original quote. If your written estimate said BINDING but the bill of lading says NON-BINDING, that is the moment to pause, not later. The bill of lading is the operative document. If it disagrees with the estimate, the bill of lading wins on delivery day.

Note also the valuation election. Federal regulations require the mover to offer at least two options: released value protection (roughly 60 cents per pound, included in the basic rate) and full-value protection (a separately priced option that pays for repair or replacement at current market value). The election is binding once you sign. If the bill of lading does not show your selected option, fix it before the truck moves.

7. How To Read Your Estimate Before You Sign

The estimate is a four-page document, not a single line on a confirmation email. Before you sign, the four sections that determine whether the price will hold are these.

The estimate-type label. This should appear at the top of the first page, in bold. BINDING. NON-BINDING. BINDING NOT-TO-EXCEED. If it is not there, write it in by hand and have the mover representative initial it. If they will not, that is the answer to whether you should sign at all.

The inventory. This is the list of every room and every item the estimate covers. On a binding estimate, this list is the scope. Anything not on the list is potentially out of scope. Walk through it before signing and add anything missing.

The accessorial fees schedule. Stairs, long carry, shuttle service, packing materials, bulky-item surcharges, hoisting fees. These are billed on top of the line-haul charge, and they are the most common source of surprise additions on delivery day. The estimate should list each accessorial that may apply, with its trigger condition (over X stairs, over Y feet of carry, etc.) and its rate.

The valuation coverage selection. Released value (roughly 60 cents per pound, included) or full-value protection (additional cost, varies). Initial the box. Note that released-value coverage is almost never adequate for a long-distance move with valuable furniture. A 100-pound couch worth $2,000 pays out $60 under released value if it is destroyed.

8. When Each Type Makes Sense

Each estimate format has a use case. The general guide:

• Choose binding when the inventory is well-defined, the move is straightforward, and you value certainty over a possible small saving. Long-distance corporate relocations and tightly inventoried home moves are the classic binding use case.
• Choose binding not-to-exceed when the inventory is fuzzy or you suspect you might pack lighter than estimated. This is often the best customer outcome on a residential move, when offered.
• Choose non-binding only when the carrier has a clean track record on estimate accuracy and you understand the 110 percent rule. Non-binding can save you money on a lighter-than-estimated shipment, but the upside is small and the risk of a 110 percent overage on a stressful day is real.

A footnote: many local intrastate moves are billed hourly, not by weight, so the binding-vs-non-binding distinction does not apply in the same way. For local hourly moves, the equivalent question is whether the estimate gives a not-to-exceed total or just an hourly rate that runs open-ended. Ask, and get the answer in writing on the bill of lading.