Moving to a new phone system is one of the biggest operational changes a business owner makes—get the migration wrong, and you're looking at downtime, lost calls, and frustrated clients. Smart owners treat migration as a strategic project, not an afterthought, which means understanding what vendors charge, what's included, and how to avoid hidden costs. This guide breaks down real pricing and packaging for phone system migration services so you can budget accurately and choose the right partner.
What You're Actually Paying For
A migration isn't just transferring numbers. It includes disconnecting legacy systems (often PBX or older hosted platforms), porting phone numbers to a new provider, configuring extensions and call routing, training staff, and validating everything works before launch day. Some vendors bundle these into a flat project fee; others charge à la carte for each component. Knowing the difference prevents sticker shock when the invoice arrives.
Most reputable migration partners charge between $1,500 and $10,000 for small-to-mid-market businesses (10–100 users), depending on system complexity. A five-person firm switching from a TDM system to cloud VoIP might pay $2,000–$4,000. A 50-user enterprise moving from legacy PBX to a modern unified communications platform could run $8,000–$15,000. These figures typically include pre-migration audits, technical labor, and post-launch support during your first 30 days.
Common Pricing Models
Flat Project Fee You pay one price for the entire migration, start to finish. This works best when your system is straightforward—maybe you're a single-site office with standard extensions and a few integrations. Flat fees range from $2,500 to $7,000 for most SMBs. The advantage: no surprises. The downside: overly complex migrations might not fit neatly into a fixed scope.
Per-User Pricing Some vendors charge $50–$200 per user seat for migration labor. A 25-person team would pay $1,250–$5,000 just for setup. This model scales with your headcount, so it's fair for variable-sized deployments, but you need clarity on what "per user" includes (phone provisioning only, or training too?).
Time-and-Materials Less common, but some consultants bill at $100–$250/hour for migration work. Use this only if you have an unusually custom setup or are hiring a specialist for troubleshooting, not your baseline migration.
Bundled with Service Many VoIP providers (like 8x8, Vonage, RingCentral, or smaller regional players) include migration services free or at a steep discount if you commit to a 3- or 5-year contract. The catch: you're locked into their platform and pricing for the duration.
What to Look For in a Migration Package
Pre-Migration Audit A reputable vendor will map your current setup (extensions, voicemail, call groups, integrations with CRM or helpdesk software). This takes 2–4 hours and costs $300–$800 if done separately, but should be included in your package. Without it, you'll miss custom configurations and risk a botched cutover.
Number Porting Phone number porting is often a hidden line item. Expect to pay $15–$50 per number to port from your old carrier to the new one, on top of the main migration fee. If you're moving 20 numbers, that's $300–$1,000 extra.
Training & Documentation Look for training that includes voicemail setup, transferring calls, conference calling, and how to use mobile apps. Budget 4–8 hours of staff time; some packages include this, others charge $500–$1,500 as an add-on. Documentation (how-to guides, admin manuals) should be included as standard.
Cutover Support Your migration window—especially if it's same-day—needs live technical support. Reputable vendors include 24/7 support during your first 48–72 hours. If cutover support isn't mentioned, ask about it; it typically costs $1,000–$3,000 extra and is well worth it.
Post-Migration Warranty Some vendors guarantee a 30-day "issue-free" window where they'll troubleshoot problems at no extra cost. Others offer 90 days. This matters because real-world issues always surface in the first month.
Timing & Timeline Costs
Migrations usually take 4–12 weeks from audit to go-live, depending on size and integration complexity. Longer timelines let vendors batch work and reduce labor costs, so rushing a migration by 2 weeks might add 20–30% to the bill. Plan ahead.
Getting Found & Winning Migration Work
If you're a phone systems integrator or migration consultant, listing your services on Mercoly helps business owners find you, vet your packages, and book directly. You'll win more leads by being visible to buyers actively searching for migration expertise in your region.
Frequently Asked Questions
Q: Can I migrate my phone numbers without changing providers? Yes—that's called number porting, and it's a legal right in most jurisdictions. Expect 5–10 business days for the port to complete and a fee of $15–$50 per number from your new provider.
Q: What happens to recorded calls and voicemail during migration? Most legacy systems don't export these cleanly to cloud platforms. Plan to archive recordings yourself before the cutover, or accept that older voicemails may not transfer.
Q: How much downtime should I expect? A well-planned migration has zero downtime if you stagger cutover by department. Poor planning can mean 4–8 hours of lost calls; ask your vendor for their downtime guarantee upfront.
Talk to at least three migration partners, get written scopes and pricing, and never accept a quote that doesn't include a clear cutover plan and post-launch support.