IP Transit Costs in 2026: Price, Commit and 95th Percentile

The price of IP transit is more than a rate per Mbps. A reliable comparison has to consider the commit, port size, billing method, cross-connect, protection and support together.

The cost components at a glance

A low bandwidth rate can quickly be offset by additional charges. Ask for a complete proposal that shows at least the following items.

• Commit: the minimum contracted bandwidth, for example 1 or 10 Gbps.
• Port: the physical interface, commonly 10, 40 or 100 Gbps.
• Usage-based billing: usually the 95th percentile instead of the single highest peak.
• Cross-connect: the data-center link from your rack to the carrier router.
• DDoS protection: scope, activation model and any additional mitigation fees.
• Setup and operations: installation, monitoring, BGP support and response times.

Commit and port are not the same

The commit defines the minimum usage you pay for. The port size defines the bandwidth that is technically available for short periods. A 1-Gbps commit on a 10-Gbps port leaves room for growth and bursts without an immediate physical upgrade. The key question is how usage above the commit is charged.

How 95th-percentile billing works

With 95th-percentile billing, regular samples from the billing period are sorted. The highest five percent are discarded and the next value becomes the billable usage. Short peaks do not automatically lead to billing at the maximum rate. You should still check the sampling interval and how inbound and outbound traffic are evaluated.

Why the unit price falls with larger commits

Larger commits are easier to plan and use efficiently, so the price per Mbps typically falls as bandwidth grows. The right decision is not the lowest unit rate but the capacity you realistically need for growth, backups, software updates and traffic peaks.

Ask about these additional costs

• Monthly and one-time cross-connect charges at the required location.
• Burst pricing above the commit and any minimum contract term.
• Fees for additional ports, LACP or physically diverse handoffs.
• Surcharges for always-on mitigation, Layer 7 protection or detailed attack reports.
• Charges for IP addresses, BGP configuration or changes during the term.

How to compare offers fairly

1. 1Measure your current 95th percentile and add a realistic growth margin.
2. 2Compare proposals with the same port size, commit and contract term.
3. 3Assess routing quality, peering, redundancy, DDoS protection and support alongside price.
4. 4Clarify all one-time and site-specific costs before ordering.
5. 5Test latency, routing and support before the production migration where possible.

Conclusion

A sound IP transit comparison starts with the rate per Mbps and ends with the complete operating model. Commit, port, 95th-percentile rules, protection and support together determine whether an offer is economically and technically suitable.