Circuit Right-Sizing: How to Match Telecom Capacity to Actual Demand

SpendWire Team•3 min read•November 11, 2026

Over-provisioned circuits waste an average of $1,200 per month per site. Here is a systematic approach to right-sizing.

Circuit right-sizing is the practice of matching your telecom circuit capacity to actual usage requirements. It sounds obvious, but the average enterprise has circuits running at 25-40% utilization. The wasted capacity translates to approximately $1,200 per month per site in unnecessary costs.

How Circuits Get Oversized

The Initial Over-Buy

When a new office opens, IT provisions telecom for projected maximum occupancy with a generous buffer. A 200-person office gets bandwidth for 300 because it might grow. Five years later, occupancy peaked at 180 and now runs at 120 due to hybrid work, but the circuit still serves 300.

The Upgrade Without the Downgrade

When users complained about slow internet in 2019, IT upgraded from 500 Mbps to 1 Gbps. The performance issue turned out to be a misconfigured firewall, not insufficient bandwidth. The fix resolved the problem, but nobody downgraded the circuit back to 500 Mbps.

The Forgotten Merger

After acquiring a competitor, their office was integrated into your network. Two years later, that office relocated to your headquarters. The circuits at the old location are still billing because the disconnect was never submitted.

The Right-Sizing Process

Data Collection (Week 1-2)

For every site, gather:

Provisioned circuit type and bandwidth

Monthly recurring cost

90-day utilization data (average and 95th percentile)

Number of users at the site

Applications running over the circuit

Contract term and expiration date

Analysis (Week 2-3)

Categorize each circuit into one of four buckets:

Right-sized: utilization between 50-80% of capacity. No action needed.

Over-provisioned: utilization consistently below 40%. Candidate for downgrade.

Under-provisioned: utilization consistently above 80%. Candidate for upgrade.

Unused: zero or near-zero utilization. Candidate for disconnection.

Action Planning (Week 3-4)

For each over-provisioned or unused circuit:

Check contract terms: can you downgrade or disconnect without penalties?

Calculate savings: what is the monthly cost difference between current and right-sized capacity?

Assess risk: is there a business reason for the excess capacity (seasonal peaks, planned growth, disaster recovery)?

Submit orders: downgrade or disconnect with carrier, including a specific target date

Common Objections (and Responses)

"What if we need the capacity later?"

Most carriers can upgrade circuits within 5-15 business days. The cost of slightly delayed bandwidth on the rare occasion you need more is far less than paying for unused capacity every month.

"It is not worth the effort for small savings."

$300 per month saved per site multiplied by 30 sites equals $108,000 per year. Right-sizing is often the fastest path to telecom savings because it requires no vendor change and no technology migration.

"Our contract does not allow downgrades."

Many contracts allow downgrades with 30-60 days notice. Read the actual contract language, not what you assume it says. If downgrades truly are not permitted, flag the circuit for right-sizing at contract renewal.

Automation

SpendWire automates the right-sizing analysis by comparing invoice data against utilization metrics. The platform identifies over-provisioned circuits, calculates potential savings, and tracks whether disconnection and downgrade orders have been processed. This turns a one-time project into an ongoing optimization program.

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