PBXflex vs Nextiva
A Nextiva alternative with fax on every plan
Nextiva's pricing page lists online fax as an add-on on Core. PBXflex includes fax and business texting on Essentials and Business, at one month-to-month price, with every call-flow feature included on Business.
- Free number porting
- No contract
- No administrative fee
Why choose PBXflex over Nextiva
Fax on the entry plan
Fax is included on Essentials, in the same app as your calls and texts. Nextiva's pricing page lists online fax as an add-on on Core.
One price, month to month
PBXflex has no term to sign. Nextiva's lower prices need a 12-month or longer term, and are for new customers with 1 to 100 employees.
One allowance for the whole team
Texts draw on credits your whole team shares, so a quiet user covers a busy one. Nextiva's pricing page lists 100 text messages a month for each Core user.
Toll-free and every call flow on Business
Business includes a toll-free number, call queues, callback, conference rooms and intercom paging.
Plan by plan
PBXflex Essentials beside Nextiva's lowest-priced plan for a team, and Business beside the next one up. Nextiva's side uses the words on its own pricing page.
| PBXflex Essentials | Nextiva Core | |
|---|---|---|
| Business texting | Included | 100 text messages per user a month |
| Fax | Included | Online fax is an add-on |
| Desk phones | Rent one from $5 a month, or buy one from $89 | Not stated on the pricing page |
| Auto attendant (IVR) | 1 included, then $5/mo each | Auto-attendant and call menus |
| Call queues | $5/mo each | Not stated on the pricing page |
| Toll-free number | $5/mo each | 1-800 number is an add-on |
| Calling | 500 per user, pooledCredits a month, shared by your whole team. One credit is one minute of US and Canada calling. | Unlimited calls |
| Price, month to month | $30 a user a month | $23 a user a month |
| Terms and fees |
|
|
| PBXflex Business | Nextiva Engage | |
|---|---|---|
| Business texting | Included | 500 text messages per user a month |
| Fax | Included | Online fax |
| Desk phones | Rent one from $5 a month, or buy one from $89 | Not stated on the pricing page |
| Auto attendant (IVR) | Included | Auto-attendant and call menus |
| Call queues | Included | Not stated on the pricing page |
| Toll-free number | 1 included, then $5/mo | 1-800 number, with up to 2,000 free 1-800 calling minutes |
| Calling | 1,000 per user, pooledCredits a month, shared by your whole team. One credit is one minute of US and Canada calling. | Unlimited calls |
| Price, month to month | $40 a user a monthCosts less than Nextiva Engage | $50 a user a month |
| Terms and fees |
|
|
Other Nextiva plans, not compared
- Nextiva Scale: $75 a user a month
Switching to PBXflex
Keep your numbers, and set up as much or as little yourself as you like.
Keep your numbers
Number porting is free on every plan, so your customers keep dialing the numbers they already have.
Set it up your way
Build your call flows in the app yourself, or choose guided setup. We build your IVR, queues and ring groups, port your numbers, register your texting campaign, and train your team for 30 minutes.
Answer anywhere
Every extension rings on a desk phone, the web app and a mobile phone. Desk phones can be rented by the month.
How we compared
- PBXflex Essentials is set beside Nextiva's lowest-priced plan for a team, and Business beside the next one up.
- Prices are month to month, because PBXflex has no annual contract. Where Nextiva charges less for an annual commitment, it is listed under terms and fees.
- Nextiva's details are copied from its own pricing page, not from review sites or other comparisons. We keep a dated screenshot of the page.
- A row marked not stated is one Nextiva's pricing page doesn't mention.
- Prices leave out promotions, hardware, taxes and fees on both sides.
Nextiva's prices and plan details are from its own pricing page, checked on October 7, 2026. Nextiva's pricing page
More comparisons
Switch to PBXflex and keep your numbers
Number porting is free on every plan. Create your account and set up your lines in the PBXflex app, or choose guided setup and we build it with you.
Or call us on (877) 575 - 9527