A Second Phone Line for Your Business: The Honest Decision Guide

Search "second phone line for business" and you get the same page twelve times. A listicle, ten providers ranked in an order that suspiciously mirrors who paid the most, a price grid that was accurate in 2023, and a "Try free" button in every row.

Nobody actually tells you the thing you want to know: do you need one yet, and if you do, what should you pay.

So here it is. A plain decision guide for the solo owner or two-person business trying to figure this out this week.

Start with the free option, honestly

Google Voice is free. It is also, in 2026, explicitly not for business anymore.

Google now requires you to check a box confirming personal use when you sign up for the free tier. This is not a shrug. It is a response to FCC and carrier rules called 10DLC, which require any business sending SMS in the U.S. to register their numbers and campaigns before carriers will reliably deliver the messages [1]. The free Google Voice tier does not support that registration. Which means if you use it for business texting, your messages can be throttled, filtered, or silently dropped, and you have zero recourse.

If your "business" is really you, taking calls from a handful of clients, no texting, no team, no auto-attendant, no growth plans, the free option is still genuinely fine. It gives you a real number, decent voicemail, transcription, and separation from your personal cell. That is a legitimately good deal for zero dollars.

But there are three moments it stops being enough. If you hit any one of them, stop trying to make free work.

The three moments free stops being enough

1. You need to text customers

Business SMS is where free breaks first. Google Voice's free tier has soft daily limits, group texts capped at seven recipients, and no path to 10DLC registration [2]. People report their accounts getting suspended for volume that seems reasonable to a normal business. Meanwhile carriers are getting stricter every quarter about what unregistered traffic they will deliver.

If a customer texts you and you can't reliably text back, you are running a business on hope.

2. You hire your first person

The second you have someone else who needs to answer the business line, free falls apart. Google Voice's free tier is a single-user product. There is no shared inbox, no ring group, no way to see who took the call or what they said. Your new hire either uses their personal phone (bad for them, bad for you when they leave) or you buy them a plan, at which point you are running two separate systems that don't talk to each other.

3. You need hours, routing, or a real greeting

"Press 1 for sales, press 2 for support" sounds silly for a two-person shop until you realize what it actually does. It routes calls when you are on another call. It sends after-hours callers somewhere useful instead of a dead voicemail. It makes you sound like a business a stranger would trust with money.

Free tools do not do this. The moment you need business hours, routing, or a proper auto-attendant, you have crossed into paid territory.

What a real second line actually costs

Here is where the listicles fall apart. They quote the sticker price and skip the total.

Google Voice for business starts at $10 per user per month for the Starter tier, but that price is an add-on. You also need a Google Workspace subscription, which starts at $7 per user per month on annual billing [3]. Real minimum: $17 per user per month, and you don't get auto-attendants until you jump to Standard at $20 plus Workspace.

Traditional VoIP providers like RingCentral, Nextiva, Dialpad, and Vonage generally sit between $20 and $35 per user per month for a plan that actually includes texting, routing, and an auto-attendant. Advanced tiers with AI features run $30 to $50 [4]. Most require annual contracts.

Pay-as-you-go providers exist in the $10 to $15 per user per month range and skip the contract. Tonet, for example, is $10 per user plus per-minute usage, or $15 unlimited, billed daily so you only pay for active days. That is closer to what a two-person business actually needs to spend.

The honest range for a real second business line in 2026 is $10 to $30 per user per month all-in. If someone is quoting you $60 for "a phone line," you are looking at either a traditional landline or a bundle full of features you will not use.

The free app trap: numbers that don't stay yours

There is a category of apps that promise a free second number forever. TextNow is the most common. They are not scams, but there is a catch worth understanding before you print business cards.

TextNow explicitly reclaims numbers after 30 days of no activity, and once a number is recycled, you cannot get it back [5]. It goes to someone else. If you go on vacation, if you get sick, if you launch a business that has a slow month, your customer-facing number can disappear. TextNow will sell you a "Number Lock" add-on for $1.99 a week to prevent this, which works out to about $8.60 a month. At which point you are paying for a service that gives you far less than a real business line.

The larger issue is portability. Business numbers should be assets you own and can move between providers. Free apps typically will not port your number out, which means the number your customers know is trapped inside whatever platform you started on. That is a fine trade-off for a burner. It is a bad trade-off for a business you plan to grow.

The two-minute decision framework

Ask yourself three questions.

Do I need to text customers reliably? If yes, free is out. Skip to paid.

Will more than one person ever answer this line? If yes, free is out. You need shared inbox, call routing, and per-user seats.

Do I want this number to be portable and permanent? If yes, free apps that reclaim numbers are out. You want a provider that lets you port in and port out.

If you answered no to all three, use Google Voice free, keep your receipts, and revisit this decision when something changes.

If you answered yes to any of them, you are looking at $10 to $20 per user per month for something that will actually hold up. Look for daily or monthly billing over annual contracts, real number portability, and 10DLC support included. Skip anything that requires a sales call to get a price.

The one thing every guide misses

A second business line is not about having two phones. It is about being reachable in a way that scales past you. The reason to make this switch is not that free is bad. It is that the moment you stop being the only person who answers your business calls, the tool has to do more than route audio.

That is the honest reason to pay. Not the features, not the AI, not the auto-attendant. It is that you are building something that has to work when you are not the one holding the phone.

If you are wrestling with this decision this week and want a straight answer without a sales pitch, drop a comment. Tonet is built for exactly this two-to-ten-person window, and we are happy to say when we are not the right fit.

Sources:

[1] Unitel Voice (2026). New FCC business texting rules and 10DLC registration requirements affecting Google Voice free tier.

[2] MessageDesk (2026). Google Voice SMS daily limits and group texting restrictions for business teams.

[3] CloudTalk (2026). Google Voice for Business pricing tiers and Google Workspace add-on requirements.

[4] Nextiva (2026). SMB VoIP and cloud phone system pricing benchmarks.

[5] TextNow Support (2026). Official policy on number recycling after 30 days of inactivity.