Why use more than one carrier
Many small sellers begin with a single carrier because it is simple. As volume and variety grow, a second or third provider starts to make sense. The common reasons are:
- Different strengths. One carrier may be strong on light parcels, another on heavy ones, a third in a specific region. No single network is best everywhere.
- Price by lane. Rates vary by weight, zone and service, so the cheapest carrier for one parcel is rarely the cheapest for every parcel.
- Resilience. If one carrier has a network disruption, a strike or a capacity squeeze, a second can take the overflow. This is part of broader contingency planning.
- Peak capacity. During busy periods, carriers may limit pickups or add restrictions. A spread of providers reduces dependence on any one network’s capacity, which is especially useful in peak seasonal demand.
- Customer options. Offering a choice of delivery methods, such as home delivery or a pickup point, often requires more than one provider.
- Negotiating position. A business that can credibly move volume has more influence in rate discussions than one with nowhere else to go.
The costs of splitting
Multi-carrier setups are not automatically better. Splitting has real downsides, and they should be weighed honestly.
Smaller volume with each carrier. Carrier discounts usually depend on volume. Spreading parcels thinly across several providers may mean none of them gives you its best tier, a point that matters when you look at the volume tiers in carrier contracts. A business with modest volume may do better concentrating most parcels with one primary carrier.
More complexity. Each carrier has its own labels, pickup arrangements, tracking pages, claims processes and invoices. Staff must handle all of them, and mistakes such as putting the wrong label on a parcel become more likely.
Inconsistent customer experience. Customers may see different tracking, different delivery times and different behaviour at the door, depending on which provider carries the order.
More invoices to check. Billing rules differ, so reconciling charges takes more effort, and invoice audits become more important.
Ways to divide the volume
There are several common allocation rules, often used in combination.
- By destination. Use the carrier with the best coverage or price in each region, for example a local network for nearby areas and a national carrier elsewhere. This is where regional carriers often fit.
- By parcel profile. Send light parcels via one provider and heavy or bulky ones via another, since pricing structures differ by weight and size.
- By service level. Use one carrier for economy parcels and another for express.
- By customer choice. Let customers choose at checkout, with the order routed to the matching carrier.
- By price at the moment. Compare live rates for each parcel and pick the cheapest that meets the delivery promise. This is what rate shopping tools do.
- Primary and backup. Keep most volume with one carrier and a smaller share, say a tenth or so, with another so the relationship and account stay active in case you need to shift quickly.
- By proportion. Assign a fixed share to each carrier, mainly to meet a volume commitment or to test performance.
Start with the simplest rule that fits your reason for splitting. Rules based on a destination, a weight band or a service are easy to explain to staff and easy to audit.
What you need in place
Multi-carrier shipping works best with some supporting tools and habits:
- Shipping software that prints labels for multiple carriers from one screen, tracks all parcels in one place and applies your rules automatically. Doing this by hand across several carrier websites quickly becomes slow and error-prone.
- Consistent packing and labelling. The warehouse should be able to pack once and label for any carrier, with a clear process for sorting finished parcels by provider ahead of pickup.
- A handover plan. Different carriers may collect at different times, so check each carrier’s cut-off for the day.
- A single view of performance. Use the same measures for every carrier, as a scorecard would, so you can see whether the split is working.
- Clear customer communication. Make sure tracking messages name the right carrier and link to the right page.
Checking whether the split is working
After a few months, review the evidence. Are total costs per parcel lower or higher than before? Has delivery performance improved on the routes that were moved? Has the effort spent on handling, support and billing risen enough to cancel any savings? If the result is unclear, simplify rather than add more providers. Two well-managed carriers usually outperform four loosely managed ones.
It is also worth watching the contracts. Some agreements include minimum volume commitments or penalties for moving parcels away, so check the terms before reallocating a large share.
A sensible starting point
For a business using one carrier, adding a second does not require a large project. A common first step is to place a limited slice of volume, such as one region or one parcel type, with the new provider, measure the outcome, and expand only if the numbers support it. The goal is not to use as many carriers as possible but to use the number that gives you good service, fair prices and a practical fallback.