Over 60% of small business owners use a personal number for work calls — and most of them regret it. Mixing personal and professional calls on one number costs you credibility, makes it impossible to set boundaries, and creates real compliance headaches. This article breaks down the best second phone number apps for small businesses in 2026, what each one actually costs, who each option suits best, and why one approach is pulling ahead for teams that need to call internationally.
Key Takeaways:
- GlobCall.com offers second business numbers in 100+ countries with no per-seat fees — unlimited team members share one balance
- The cheapest second number apps start around $10–15/month per line, but browser-based VoIP can cut that to pay-as-you-go from $0.02/min
- For small businesses calling international customers, a local number in the destination country can increase answer rates by up to 40%
Need to call internationally?
From only $0.02/min to 200+ countries.
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Why Small Businesses Actually Need a Second Phone Number
A dedicated business number protects your personal number from clients, gives you a clean call log for tax records, and lets you hand off the line if an employee leaves. Based on industry research, businesses with a visible phone number on their website convert meaningfully more leads than those without one — and that number needs to be one you control.
A second number also lets you track marketing campaigns. Run a Google ad with one number, a Facebook ad with another, and you know instantly which channel is driving calls. That's basic attribution most small businesses skip entirely.
And if you're calling customers in other countries? A local number in their country changes everything. Calls from unknown foreign numbers get ignored. A local number in their market doesn't.
The 8 Best Second Phone Number Apps for Small Business in 2026
This market is crowded, pricing is confusing, and most apps charge you per seat whether or not every team member actually makes calls. Here are the real options.
1. GlobCall — Best for International Teams and Pay-As-You-Go Pricing
GlobCall gives small businesses local numbers in 100+ countries, a shared balance across unlimited team members, and no seat fees. You pay for minutes used, not for desks filled. That makes it genuinely different from almost everything else on this list. Rates start at $0.02/min to the USA and Canada, $0.03 to the UK and Mexico, $0.04 to Germany, and $0.08 to India.
If your team has five people and only two of them regularly make outbound calls, you don't pay for three idle seats. For a small business watching every dollar, that's a real cost difference.
The calling interface is browser-based — no app download, no SIM card needed. You open a tab and call. For remote teams especially, that's a meaningful advantage. See how browser-based VoIP actually works if you haven't used it before.
GlobCall's B2B setup is built specifically for small businesses expanding internationally. You can get a local UK number for your London inquiries, a local Indian number for your Mumbai team, and a US number for American clients — all managed from one account with one shared balance.
Best for: Small businesses with international customers, remote teams, and owners who dislike per-seat pricing.
Pricing: Pay-as-you-go from $0.02/min. Local numbers available in 100+ countries.
Limitations: No mobile app currently (browser-based only). Not ideal if you need a dedicated mobile number for personal calls only.
2. Google Voice — Best Free Option for Solo Operators in the USA
Google Voice gives you a free US number that rings on your existing phone. It's clean, simple, and costs nothing for basic use. For a solo freelancer or consultant who only needs one extra number for domestic calls, it's hard to beat.
The limitations add up fast, though. Google Voice for personal use is US-only for free numbers. The Google Workspace version — which you'd need for a team — costs $10–$16/user/month and lacks international calling at competitive rates. If you're calling India from the USA or reaching clients in the Philippines, Google Voice isn't built for that.
No team shared balance. No local numbers outside the US. Every team member needs their own subscription. See our full Google Voice comparison for a side-by-side breakdown.
Best for: US-based solopreneurs who need a free domestic second number.
Pricing: Free for personal US use; $10–$16/user/month for Workspace.
Limitations: US-centric, per-seat pricing, weak international rates.
3. JustCall — Best for Sales Teams Needing CRM Integration
JustCall targets sales teams specifically. It connects with Salesforce, HubSpot, Pipedrive, and about 100 other CRMs. When a call comes in, the contact record opens automatically. Call notes sync. It's a well-built product for inside sales teams who live in their CRM.
Pricing starts at around $19/user/month and climbs quickly when you add AI summaries or coaching tools. For a 10-person sales team, you're looking at $190–$400/month before international calling costs. Our JustCall alternatives page breaks down where it wins and where it doesn't.
International calling is available but priced per minute on top of the subscription. If your team calls India, the Philippines, or Nigeria regularly, those per-minute rates stacked on top of seat fees can add up to a significant monthly line item.
Best for: Sales-heavy small businesses already using a CRM who need call logging built in.
Pricing: $19+/user/month plus per-minute international rates.
Limitations: Gets expensive for larger teams; seat-based pricing model.
4. OpenPhone — Best for Startups That Want a Clean, Modern Interface
OpenPhone has built a loyal following among tech startups and indie founders. The interface is genuinely nice to use — it feels more like a messaging app than a legacy phone system. You get a business number, shared team inboxes, SMS, and voicemail transcription.
Pricing starts at $15/user/month. For a small team of three, that's $45/month for a second number system — reasonable, but not cheap. International calling is limited; it's really designed for US and Canadian businesses calling domestically. See our comparison of the cheapest ways to call internationally if international coverage matters to you.
OpenPhone added AI features in 2025 — call summaries, action items, that kind of thing. Useful for teams handling inbound sales calls. Less useful if you're making outbound international calls to suppliers or overseas customers.
Best for: US/Canada-focused startups, indie founders, and small teams who want a polished experience.
Pricing: $15/user/month.
Limitations: Weak international calling; per-seat model.
5. RingCentral — Best for Businesses That Need Enterprise Features at SMB Scale
RingCentral is a full business phone system — call routing, auto-attendant, video meetings, team messaging, fax. For a 10–50 person company that needs all of that in one place, it makes sense. For a 3-person startup that just wants a second number, it's overkill and overpriced.
Plans start at around $20/user/month, but the features you actually want kick in at higher tiers. International calling is available through add-ons, and the per-country rates can be eye-opening. Regularly calling markets like Nigeria or the Philippines means those costs accumulate fast at scale.
RingCentral also has seat fees, contract options, and a feature set that takes real time to configure properly. There's a reason it has a dedicated IT market. Our full RingCentral alternatives breakdown explains when it makes sense and when it doesn't.
Best for: Small businesses planning to scale to mid-size, needing a full phone system with meetings and routing.
Pricing: $20+/user/month.
Limitations: Overkill for most small businesses; per-seat pricing; complex setup.
6. Vonage Business — Best for Businesses Needing API and Developer Integration
Vonage has repositioned heavily toward API-driven communications since being acquired by Ericsson. The Vonage Business Communications product gives you a second number, call routing, and SMS — but its real strength is developer access. If you want to programmatically send calls, build IVR systems, or integrate telephony into your own software, Vonage's APIs are strong.
For a small business that just wants a second number without a developer on staff, Vonage is probably not the right starting point. Pricing starts at around $13/user/month, with API usage adding separate costs. Our Vonage alternatives page is worth reading if you're evaluating this category.
Best for: Tech-forward small businesses or developers who want to build custom calling features.
Pricing: $13+/user/month plus API usage costs.
Limitations: Steeper learning curve; not plug-and-play for non-technical teams.
7. Microsoft Teams Phone — Best If You're Already in the Microsoft 365 Ecosystem
After Skype was sunset in May 2025 and migrated to Microsoft Teams, Teams became the default Microsoft calling solution. If your business already pays for Microsoft 365, adding Teams Phone as a calling plan is genuinely logical — you're extending a subscription you already have rather than adding a new one.
Teams Phone costs around $8–15/user/month as an add-on in most regions. International calling is available through Microsoft Calling Plans, but the per-minute rates for non-US calls aren't the cheapest option on the market. See how Teams Phone international calling compares to standalone VoIP — the gap is significant for high-volume international callers.
The interface lives inside Teams, which your team is probably already using. That's a real adoption advantage. But you're still on a per-seat model, and if you need local numbers in 100 countries, Teams Phone doesn't offer that flexibility. Our Teams Phone alternatives page covers this in detail.
Best for: Microsoft 365 customers who want calling integrated into their existing workspace.
Pricing: ~$8–15/user/month add-on.
Limitations: Per-seat pricing; international rates not competitive; limited local number availability globally.
8. Rebtel — Best for Personal International Calls, Less Ideal for Business Teams
Rebtel is built for international calling at low per-minute rates, particularly to mobile numbers in countries like India, Mexico, and the Philippines. It works well for personal use — calling family abroad, managing overseas suppliers as a solo operator. As a business phone system, it falls short quickly.
There's no team management, no shared balance, no local numbers for inbound calls. Our Rebtel alternatives comparison puts it alongside other options for pure calling cost. If international call rates are your only concern and you're operating solo, Rebtel is worth a look. For a team, you'll outgrow it immediately.
Best for: Solo operators making high-volume calls to specific international destinations.
Pricing: Low per-minute rates; subscription plans available.
Limitations: No team features, no inbound local numbers, not a true business phone system.
How to Choose the Right Second Number App for Your Business
The decision comes down to four factors. Get these right and the choice becomes obvious.
Who's calling and where? If 80% of your calls are domestic US or Canada, Google Voice or OpenPhone work fine. If you're calling clients in Germany, Japan, or the Philippines regularly, you need a provider with genuine international rates and ideally local numbers in those markets. Check our full international calling rates breakdown before committing to any subscription plan.
How many people need to make calls? Per-seat pricing sounds reasonable at two users. At eight users, you're paying $120–200/month before you've made a single call. A shared-balance model means you pay for actual usage, not for people having access.
Do you need inbound local numbers? If a customer in the UK calls you, they shouldn't be dialing a US number and paying international rates. A local UK number they can call at local rates changes the relationship. Research consistently shows that local numbers outperform international ones for trust and answer rate.
How technical is your team? Browser-based calling with a shared balance requires essentially zero setup. API-driven platforms like Vonage require developer time. Be honest about what your team will actually use.
Per-Seat Pricing Is a Structural Mismatch for Small Businesses
A small business of six people might have two salespeople making 200 calls a month, two operations staff making 10 calls a month, and two people who never call customers at all. Under per-seat pricing, you pay for all six regardless.
The pay-as-you-go vs. monthly subscription debate has a real dollar answer. A 6-person team on $15/seat/month is $90/month before a single call is made. On a shared-balance model where you buy $50 of calling credit and distribute it across the team, you pay for what you use.
For businesses calling internationally, this gap widens further. Seat-based VoIP pricing can cost significantly more than you expect once you add per-minute international rates on top of the subscription. Do the math before you sign up.
Setting Up Your Second Business Number: What the Process Actually Looks Like
Getting a second business number takes anywhere from 5 minutes (browser-based VoIP) to several days (porting an existing number to a new provider). Here's how a typical setup goes for each approach.
Browser-based setup (GlobCall, similar services): Create an account, add calling credit, select the local number you want in your target country, and you're live. No hardware, no SIM card, no download. The step-by-step process for setting up a virtual business number takes most businesses under 15 minutes.
App-based setup (OpenPhone, JustCall): Download the app, enter payment details, choose a number, configure voicemail and routing. Usually 20–30 minutes. Add team members individually with their own logins.
Full phone system setup (RingCentral, Vonage): Expect 1–3 hours for initial configuration. Call routing trees, auto-attendants, hold music, CRM integration — these take time to configure properly. Some providers offer onboarding support; others hand you a knowledge base and wish you luck.
For most small businesses, the browser-based route is the fastest path to a working second number. And if you want to try calling before committing, that's a reasonable first step.
Need to call internationally?
From only $0.02/min to 200+ countries.
No apps, no contracts.
Trusted by 10,000+ callers worldwide
Frequently Asked Questions
Can I get a second phone number for free?
Google Voice offers a free US number for personal use, but team features, international calling, and business features require a paid Google Workspace plan at $10–16/user/month. Most genuinely useful second number apps for business cost $10–20/month per user. Pay-as-you-go options let you start for as little as a few dollars of calling credit with no monthly fee.
Do I need a second number if I already use WhatsApp Business?
WhatsApp Business is useful for messaging-first relationships in markets where WhatsApp penetration is high — India, Brazil, Mexico. It doesn't give you inbound call tracking, a professional phone number customers can dial, or the ability to reach people who aren't on WhatsApp. A virtual number and WhatsApp Business serve different purposes and most businesses eventually need both.
What's the difference between a virtual number and a VoIP number?
Both terms often describe the same thing — a phone number not tied to a physical SIM or landline. A virtual number is a number that can receive calls and route them to any device or number. VoIP is the technology used to make and receive those calls over the internet. Our explainer on virtual phone numbers for business covers the distinction in full.
Will customers know my second number is virtual?
No. From the caller's perspective, it rings and connects like any other number. A local UK number looks and behaves exactly like a UK landline or mobile number. The virtual or VoIP infrastructure behind it is invisible to the person calling or receiving.
How much does it cost to get a local number in another country?
It varies by provider and country. Many services charge $5–15/month per number on top of calling fees. GlobCall includes local numbers in 100+ countries as part of the business setup — you're paying for calls made, not for the number itself as a separate line item. See the full rates page for per-minute costs by destination.
Conclusion: Match the Pricing Model to How Your Team Actually Works
Here's a quick summary:
- Solo, US-only? Google Voice or OpenPhone. Clean, affordable, easy.
- Sales team with CRM? JustCall earns its place if you live in Salesforce or HubSpot.
- Already in Microsoft 365? Teams Phone is the path of least resistance.
- International customers, multiple team members, pay-per-use pricing? GlobCall is built specifically for that scenario — no seat fees, 100+ country local numbers, shared balance, calls from $0.02/min.
The most expensive mistake small businesses make is picking a per-seat system at 3 people, watching it become $200/month at 8 people, and then having to migrate everything. Pick a pricing model that scales with actual usage, not headcount.
Ready to test a second business number without committing to a monthly seat fee? Make your first call at GlobCall.com →
Need to call internationally?
From only $0.02/min to 200+ countries.
No apps, no contracts.
Trusted by 10,000+ callers worldwide
