In the modern world of logistics, the debate of single carrier vs multi-carrier shipping is not just about preference anymore; it is about profitability and survival. There is a comforting old rule that many shippers still cling to: “Give every single package to one major carrier to unlock massive discounts.” It sounds safe, but if you look closely at the current landscape, that old rule is starting to crack.
The Myth of Infinite Volume Discounts
Sure, volume discounts are very real. But they hit a wall much faster than carrier sales reps want to admit. Once you are already spending big bucks with one giant carrier, moving up to the next discount tier becomes exponentially harder. Every extra pallet you hand them barely moves the needle on your overall price.
The law of diminishing returns in single-carrier contracts is brutal. And in the long run, it is costing businesses money.
The 8–25% Reality Check
Here is what 20+ years in the trenches of freight management has taught us: The old way is expensive.
We have analyzed countless shipping profiles, and the data proves a consistent truth. The savings you get from always picking the cheapest carrier for each specific lane almost always smash the savings you get from a single-carrier volume deal.
This is the core of the single carrier vs multi-carrier discussion. A multi-carrier approach, often called “least-cost routing,” recognizes that Carrier A might be unbeatable for cross-country heavy freight, but Carrier B is 30% cheaper for local overnight envelopes.
When you stick to one carrier, you overpay for the services they are not specialized in just to hit a volume target. When you diversify, you cherry-pick the best rates and services every time. We see it every day: businesses save an average of 8–25% (and sometimes way more) just by being smart and not sticking to “the way things are.”
The Risk Factor: The Single Point of Failure
Saving 25% is great, but here is the knockout punch for the single-carrier model: Risk.
Relying entirely on one carrier creates a massive single point of failure in your supply chain. We have all seen it happen. A nationwide tech outage, a major depot flood, a looming labor strike, or sudden peak-season surcharges that blow up your budget.
If you are 100% dependent on Carrier X and Carrier X has a bad day, your business grinds to a halt. You cannot ship, customers get angry, and revenue stalls.
Diversifying is your insurance policy. With multiple carriers in your back pocket—perhaps a mix of national giants and specialized regional players—freight keeps moving even when someone else is having a crisis. It is not just about cost; it is about resilience.
The “Complexity” Objection
Usually, when we lay out the math and the risk factors, shippers nod along. But then comes the inevitable objection:
“Oh, but managing multiple carriers is too complicated! I do not want my team logging into five different portals and juggling five different pickup schedules.”
We agree. That sounds terrible. But that objection is based on outdated thinking. That is the “swivel-chair” method of shipping, and it died years ago.
That is what platforms like 2Ship are for. Modern shipping software makes the single carrier vs multi-carrier transition invisible to your warehouse team. You get one platform, integrated carrier labels, one standardized tracking feed, and automated rules that make the best decision for you instantly. You get all the upside of choice with none of the admin pain.
Pick Your Team
The logistics world is dividing into two camps. There is “Team One Carrier,” holding onto the comfort of simplicity even as costs rise and risks mount. And there is “Team Let Me Choose,” leveraging technology to gain resilience and slash costs significantly.
Which side are you on?
And regardless of your team choice, we’d love to show you how “Team Let Me Choose”, together with 2Ship, is the winining team to be on.