A short-load (a.k.a. minimum-load or small-load) fee is a surcharge a plant ready-mix supplier adds when you order below its truck minimum, because dispatching a truck for a partial load costs the plant nearly as much as a full one. One real published Canadian schedule (Dufferin Concrete and Ontario Redimix, both CRH companies, 2025 Ontario price lists) charges a tiered small-load fee of $400/load for 1.00–3.00 m³, $250/load for 3.25–4.00 m³, and $150/load for 4.25–5.00 m³ (on top of the per-m³ concrete price) with a 3 m³ order minimum.
On a 1.5 m³ pour, that $400 charge can roughly double the bill. Volumetric (metered, mixed on site) has no truck-minimum to fall below: you pay for the cubic metres actually discharged, so the short-load penalty disappears on exactly the small, odd pours it punishes most. (Pricing is external/third-party and Ontario-based. Validate against current Calgary quotes.)
What the cost guides won’t tell you
Search “concrete short-load fee” and every result quotes the same vague range (“$150 to $350,” “$40 to $60 a yard”) and stops there. None of them shows you a real published rate card, and none does the division that actually matters: what that fixed fee costs per cubic metre once you spread it over a small pour.
That division is the whole story. A flat fee is brutal on a small order precisely because it doesn’t shrink with the order. We’re going to show the published tier table, run the break-even math, and stack the other fees that ride alongside it: the part nobody adds up.
A note before the numbers: every dollar figure below is external and third-party, most of it from Ontario price lists, and it is point-in-time. The mechanic (a fixed per-load surcharge that punishes small pours) transfers everywhere, including Calgary. The exact dollars do not. Validate against current Calgary quotes.
What is a short-load fee, and why do plants charge it?
A short-load fee (also called a minimum-load or small-load charge) is a flat surcharge a drum-mix plant adds when your order is below its truck minimum.
The reason is straightforward and not predatory: a drum truck costs roughly the same to load, drive, and clean whether it carries 2 m³ or 9 m³. The driver’s hours, the fuel, the wash-out, the plant slot: those costs are mostly fixed per trip. So when you order a partial load, the plant recovers the gap between what you bought and what the trip cost with a short-load fee.
The industry’s own analogy is the convenience-store fountain drink. Cart-Away, an industry equipment supplier, frames the short-load charge as “Need 8 oz – Pay for 44 oz” (the “Big Gulp” problem) and notes that contractors ordering less than 4 cubic yards typically face minimum-load charges. (Source: Cart-Away, “The Short Load Charge Explained – The Big Gulp”, 2022.) You want eight ounces of concrete; the truck is built to sell you forty-four.
The real published tier table (the part nobody shows)
Most plants keep their fee schedules in a quote, not on the website. But two CRH-Canada suppliers, Dufferin Concrete and Ontario Redimix, publish full price lists, and they reveal the structure clearly. Both 2025 Ontario lists (effective January 1, 2025) carry an identical tiered small-load charge:
| Load size | Small-load charge (per load) |
|---|---|
| 1.00 m³ – 3.00 m³ | $400.00 |
| 3.25 m³ – 4.00 m³ | $250.00 |
| 4.25 m³ – 5.00 m³ | $150.00 |
| 3 m³ minimum order on all mixes | n/a |
(Sources: Dufferin Concrete 2025 Ontario Price List, p.5; Ontario Redimix 2025 Price List, p.5. Ontario rates. Validate against current Calgary quotes.)
Read the table from the bottom up and the logic jumps out: the fee shrinks as you approach the minimum. Order 4.5 m³ and you pay $150. Order 1.5 m³ and you pay $400, the same flat penalty as a 3 m³ order. The smaller and odder your pour, the harder the fee bites, because it’s recovering a fixed truck cost over fewer and fewer cubic metres.
That these two independent CRH lists carry the exact same tiers tells you the structure isn’t a quirk: it’s the standard plant model. A US list confirms it from another market: Townsend Concrete (California) publishes a $100 short-load fee “or discounted to the cost of the difference,” with per-branch thresholds of 3, 5, and 6 yards and standby billed at $10 per 5 minutes. (Source: Townsend Concrete prices. US rates.) Different dollars, identical shape: a threshold, a flat fee, a standby clock.
The math nobody shows: what the fee costs per cubic metre
Here’s the division the cost guides skip. Take that Dufferin/Ontario Redimix tier and put it on top of a real base price. Their lists show a 32 MPa, C-2/S-2, 0.45 w/c mix at $290.00/m³, directly comparable to Calgary’s S-2 spec mix, and a fair stand-in for “the price the fee sits on top of.” (Source: Dufferin p.2 / Ontario Redimix p.2. Ontario rates, validate locally.)
Now watch what the fixed $400 fee does as the pour shrinks. (Illustrative arithmetic on the published Ontario figures. Your Calgary quote will differ.)
| Pour size | Concrete @ $290/m³ | + $400 short-load fee | Total | Effective cost / m³ |
|---|---|---|---|---|
| 1.5 m³ | $435 | $400 | $835 | ~$557/m³ |
| 2.0 m³ | $580 | $400 | $980 | ~$490/m³ |
| 3.0 m³ | $870 | $400 | $1,270 | ~$423/m³ |
| 4.0 m³ | $1,160 | $250 | $1,410 | ~$353/m³ |
| 5.0 m³ | $1,450 | $150 | $1,600 | ~$320/m³ |
(Illustrative only, built from the published Ontario tier + rack rate. No figure here is an Omega price. Validate against current Calgary quotes.)
On a 1.5 m³ pour, the rack rate is $290/m³ but you’re effectively paying ~$557/m³. The fee nearly doubles the concrete cost. The fewer the cubic metres, the worse the per-metre penalty, because a fixed number divided by a small number is a big number. That’s the math nobody shows you: on a small pour, the short-load fee behaves like a multiplier on your per-metre cost.
The surcharge stack: the fee is never alone
The short-load fee is the headline, but the small order rarely pays it in isolation. The same Dufferin and Ontario Redimix lists stack a series of per-m³ adders on every load. (All Ontario rates, p.5 of each list. Validate against current Calgary quotes.)
- Returned (unused) concrete: $50.00/m³, the penalty for over-ordering, which you eat if you buffer “just in case.”
- Winter handling (Nov 1 – Apr 30): $22.00/m³.
- Saturday delivery: $30.00/m³ (plus a possible plant-opening charge).
- After-hours: $40.00/m³ (5–9 pm) / $70.00/m³ (9 pm–7 am).
- Enviro / washwater: $9.00/m³ · Carbon tax / TOARC: $3.50/m³ · plus a variable fuel surcharge.
- Pour cancellation: $750/truck · Waiting time: $10.00/min after the 60 minutes allowed per 9 m³.
Here’s why this compounds the small-pour problem: most of these are per-m³, but the small order has few cubic metres to spread them over, and it’s already carrying the fixed short-load fee. A 2 m³ Saturday pour in February pays the $400 short-load fee plus winter handling plus the Saturday adder, on a load barely above the minimum. The effective per-metre cost balloons.
There’s a Calgary timing wrinkle here. The Ontario lists run winter handling November 1 to April 30, almost exactly the window of Calgary’s roughly six-month cold-weather concrete regime (CSA A23.1 §7 triggers cold-weather practice around 5 °C, late September to mid-April). Whatever a Calgary plant’s winter adder is, you’ll be paying it for half the year. (Source: Dufferin/Ontario Redimix p.5 + CSA A23.1:24 cold-weather provisions.)
At what pour size does volumetric win on total cost?
Volumetric concrete is metered to the quarter-yard and mixed on site, so there is no truck-minimum to fall below and no fixed short-load fee: you pay for the cubic metres actually discharged. That changes the break-even.
The way to think about it: a drum truck’s economics reward filling the truck. The closer you are to a full ~9 m³ load on an accessible site, the better drum looks per cubic metre. But the further below the minimum you go, the more the fixed fee dominates. That’s exactly the zone where metered, pay-for-what-you-pour volumetric pulls ahead on total cost.
So the honest break-even runs like this:
- Small and odd pours (roughly under 3–4 m³): the short-load fee + surcharge stack typically makes volumetric the cheaper total. Think driveway aprons, sidewalks, steps, shed pads, hot-tub bases, and fence footings: the daily small pour that falls under every plant’s minimum.
- The in-between (3–8 m³): it depends on the fee schedule and the surcharges that apply (winter, weekend, returned concrete). Get both numbers quoted.
- Large single-spec pours (roughly 8 m³ and up) on an accessible city site: a full drum truck is usually the cheaper per-cubic-metre answer, and we’ll say so. There’s no short-load fee on a full load: the fee only exists because you’re under the minimum. This is the honest limit of the fee argument: if you’re filling the truck, the short-load math doesn’t apply to you.
For the full method comparison beyond cost, see Volumetric vs ready mix: the honest Calgary answer.
A Calgary anchor for the local number
The Ontario tiers prove the structure; here’s a figure scaled to this market. A published Calgary cost reference puts the short-load fee for orders under about 5 yd³ at $40–$60 per cubic yard, so a 3-yard order can carry $120–$180 in extra fees, with suppliers commonly requiring 4–6 m³ minimums. (Source: Omega Ready Mix 2026 Calgary concrete price guide, a published cost-reference page, not a quote; validate against current Calgary quotes. This is not an Omega price for volumetric service.)
That maps to the Calgary reality the small finisher lives daily: a 1.5–4 m³ driveway, sidewalk, or steps pour falls under the plant minimum almost every time. The fee isn’t an edge case for that crew. It’s the default.
When the plant is still the better call
To keep this honest: the short-load fee is a small-pour problem, and it vanishes on a full load. If you’ve got a single-spec pour of roughly 8 m³ or more on a flat, truck-accessible city site, a drum truck is usually the structural and economic fit: no short-load fee applies, and throughput per truck is hard to beat. We’ll point you to a drum supplier for that job. The fee math only argues for volumetric on the pours the fee was built to penalize. Don’t let a teardown of small-load economics talk you out of a full truck on a big slab.
FAQ
What is a short-load (minimum-load) fee on concrete, and why do plants charge it? It’s a flat surcharge a drum-mix plant adds when you order below its truck minimum. A truck costs about the same to load, drive, and clean whether it’s full or half-empty, so the plant recovers that fixed trip cost with a short-load fee. The industry analogy is paying for a 44-oz drink when you only want eight.
How much is a concrete short-load fee in Calgary? A published Calgary cost reference puts it at roughly $40–$60 per cubic yard for orders under about 5 yd³, so a 3-yard order can carry about $120–$180 in extra fees, with 4–6 m³ minimums common. Pricing is point-in-time; validate against current Calgary quotes.
What’s a real example of a published small-load charge? Dufferin Concrete and Ontario Redimix (both CRH companies, 2025 Ontario lists) both publish a tiered small-load charge: $400/load for 1.00–3.00 m³, $250/load for 3.25–4.00 m³, and $150/load for 4.25–5.00 m³, on top of the per-m³ price, with a 3 m³ minimum. These are Ontario rates shown to illustrate the structure; validate locally.
At what pour size does volumetric beat plant ready-mix on total cost? Generally on small and odd pours, roughly under 3–4 m³, where the fixed short-load fee and per-m³ surcharges dominate. In the 3–8 m³ range it depends on the schedule. On large single-spec pours (about 8 m³ and up) on accessible sites, a full drum truck is usually cheaper per cubic metre and no short-load fee applies.
Do I still pay a short-load fee with volumetric (on-site mixing)? No. Volumetric is metered to the quarter-yard and mixed on site, so there’s no truck-minimum to fall below and no fixed short-load fee. You pay for the cubic metres actually discharged.
What other fees get added to a small concrete order? On the published Ontario lists, a small order can also carry returned-concrete ($50/m³), winter handling ($22/m³), Saturday ($30/m³) or after-hours ($40–$70/m³) adders, fuel and enviro surcharges, and waiting-time charges. Because most are per-m³, they hit a small order disproportionately on top of the fixed short-load fee.
Why does the short-load fee feel so much worse on a tiny pour? Because it’s a fixed dollar amount spread over very few cubic metres. A $400 fee on 1.5 m³ adds roughly $267/m³; the same $400 on 4 m³ tier drops to a $250 fee over more metres. A fixed number divided by a small number is a big per-metre cost.
Does volumetric also remove the over-order (returned-concrete) charge? Yes. Because it batches only what you pour, there’s no leftover load to return, so the $50/m³ returned-concrete penalty doesn’t arise. For the volume-estimating side of that (and the cold-joint risk of under-ordering), see the “how much do I need” article.
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