Cost is usually the question underneath all the other questions. Performance, flexibility, and reliability matter, but at some point someone has to look at a number and decide if it is worth switching over from MPLS to SD-WAN.
Here’s where SD-WAN’s savings actually come from, without the vague “significant savings” language that shows up in most vendor pitches.
Why MPLS pricing costs what it does
Carriers build MPLS pricing around dedicated, managed circuits, and that structure carries real cost implications from the start. MPLS has remained a networking standard for decades because it reliably prioritizes traffic across a private network, but that reliability comes at a price.
Distance-based pricing. Carriers price MPLS circuits partly on the distance between locations and their backbone. A business with sites spread across a wide region pays more than one with sites clustered close together, regardless of how much bandwidth either actually uses.
Bandwidth that doesn’t scale down. Once a carrier provisions a circuit, you generally pay for that capacity whether you use it or not. Scaling up usually means starting a new provisioning cycle, not making a quick adjustment.
Burst pricing that punishes exactly when you need bandwidth most. Most MPLS contracts set a committed rate, with the option to burst above it up to the physical port speed. That flexibility comes at a steep overage cost. The moments a business most needs extra capacity, a busy season, a large file transfer, a spike in traffic, are often the moments a bill quietly gets more expensive.
Installation and provisioning time. New MPLS circuits commonly take four to twelve weeks to install, sometimes longer depending on location. That’s not just a cost in dollars. It’s a cost in the business decisions that wait on that timeline.
Redundancy multiplies the cost. Real reliability with MPLS usually means paying for a second circuit as backup. A single dedicated line is still a single point of failure.
SD-WAN vs MPLS: Where the Cost Structure Changes
It’s worth being precise about what SD-WAN actually changes here. SD-WAN is a management layer, not a replacement for the underlying circuit.
If MPLS stays part of the mix, that specific connection still carries its original committed-rate and burst-pricing structure. SD-WAN doesn’t change how the carrier bills for it. What SD-WAN changes is how much of your traffic has to rely on that kind of connection in the first place.
Predictable pricing instead of committed-rate overages
Providers typically bill broadband and fiber connections at a flat rate regardless of usage, unlike MPLS’s committed-rate-plus-burst-overage model.
Shifting primary traffic onto those connections through SD-WAN avoids the overage exposure entirely for that portion of traffic. If MPLS stays in the mix as a backup link, it keeps its original pricing structure. But it no longer carries the bulk of your traffic or your risk.
Where the rest of the savings add up
Broadband and commodity connections instead of dedicated circuits. SD-WAN can run over standard business internet connections. Providers price these without the distance and provisioning premiums that come with MPLS. Businesses often blend a lower-cost broadband connection with a smaller MPLS or fiber link rather than relying entirely on expensive dedicated circuits.
Redundancy without a second full-price circuit. Because SD-WAN can manage multiple connection types at once, a broadband failover connection can serve as backup. That costs a fraction of a second MPLS circuit, and it still keeps the network up if the primary link drops.
Faster deployment means less operational cost while you wait. Since SD-WAN isn’t tied to specialized dedicated circuit provisioning, new sites often come online in days rather than months. That shortens the window where a new location runs on a workaround.
Centralized management reduces the labor cost of running the network. Managing multiple sites individually takes real staff time. A single dashboard for configuration, monitoring, and troubleshooting cuts that ongoing labor cost.
What this looks like in practice
The exact savings depend heavily on your current setup. That includes how many locations you have, how spread out they are, what your existing MPLS contracts cost, and how much redundancy you’re currently paying for.
A business with three tightly clustered locations on modest MPLS circuits will see a different number. A business with ten sites spread across multiple states on premium circuits with full redundancy will see another. That’s exactly why a generic “SD-WAN saves you X%” claim isn’t useful on its own. The real answer to SD-WAN vs MPLS always comes down to your specific circuits.
Frequently asked questions
Does SD-WAN completely replace MPLS?
Not necessarily. Many businesses keep a smaller MPLS or fiber connection as a backup link while shifting most traffic to lower-cost broadband, managed intelligently by SD-WAN.
Is SD-WAN cheaper than MPLS for every business?
Not automatically. Savings depend on how many locations you have, how spread out they are, and what your current MPLS contracts and redundancy setup already cost. A direct comparison of your actual circuits is the only reliable way to know.
How long does it take to see cost savings after switching to SD-WAN?
SD-WAN deployment is typically measured in days rather than the weeks or months MPLS provisioning takes. Most businesses see the operational and cost benefits well before a comparable MPLS rollout would even be complete.
Getting a real number, not an estimate
Rough industry figures exist. But the only SD-WAN vs MPLS comparison worth making decisions on comes from your actual circuits, your actual locations, and your actual redundancy needs. We can walk through that comparison directly, which usually takes less time than most businesses expect.
Visit our Contact Us page to submit a question or to schedule a time to talk with our team!
Want to learn more? Check out another recent blog we’ve posted:
SD-WAN 101: What is it and Why are Businesses Switching
