VoIP • Prepaid & PAYG

Prepaid VoIP in South Africa: load credit, pay per call

Prepaid and pay-as-you-go VoIP gives you a business number with no monthly line rental. Here is what it actually costs in 2026, who it suits, and the providers whose rates we could verify.

Last verified June 2026
By the WhichVoIP editorial team
8 min read

R50/moAfrihost min CallTime

Per-secondHow calls are billed

No contractMonth-to-month

087 / geoNumbers available

The short answer

What is the best prepaid VoIP provider in South Africa?

For a genuine pay-as-you-go line with no monthly rental, Afrihost Pure VoIP and Axxess VoIP are the strongest picks: both bill per second at about 40c a minute to local landlines and 80c to South African mobiles, with no contract. BiZVoIP is the purest pay-as-you-go option, charging no monthly fee at all against a R500 opening top-up. Prepaid suits low-volume and backup lines; heavy callers should compare a flat or uncapped plan.

R/mo Afrihost min CallTime

Per min to SA landlines

Per min to SA mobiles

Months CallTime rolls over

A Small South African Business Owner Topping Up A Prepaid Voip Balance On A Laptop In A Home Office — Prepaid VoIP turns a business line into airtime you load and draw down, with no rental charged in a quiet month.

What prepaid VoIP actually means

Prepaid, or pay-as-you-go, VoIP strips a business phone line back to its cheapest honest form: you load credit, you pay per call, and there is no monthly line rental sitting on your bill whether you dial or not.

Three things define a genuine prepaid VoIP service. You top up a balance up front. Calls are billed per second against that balance, so a 20-second call costs 20 seconds, not a rounded-up minute. And you are not locked into a contract, so the service costs nothing in a quiet month. That is the opposite of a traditional Telkom line, where the rental is charged before you make a single call.

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The bottom line: prepaid VoIP suits low-volume lines, second numbers, branch offices and backup lines where a fixed monthly seat fee would be money wasted. If you make calls all day, a flat monthly or uncapped plan usually works out cheaper.

The genuinely prepaid picks

These three services are true load-credit, pay-per-call offerings with no monthly seat fee. Each verified on the provider’s own site in June 2026.

Best all-rounder

Afrihost Pure VoIP

Minimum spend~R50/mo CallTime
Local landlineR0.40/min
SA mobileR0.80/min
CatchR50 min, rolls over 3 months

Axxess VoIP

Monthly rentalNone
Local landlineR0.40/min
SA mobileR0.80/min
BonusFree Axxess-to-Axxess calls

BiZVoIP

Monthly feeNone, pure PAYG
EntryR500 minimum top-up
NumbersGeographic, 0800, 0860
CatchCalling only, no PBX

Afrihost and Axxess both ride the CTEL network, which means calls between users on the same network are free, and their per-minute rates are identical at the time of writing: 40c to a local or national landline and 80c to any South African mobile. The practical difference is the entry barrier. Afrihost asks for a roughly R50 minimum CallTime spend that becomes usable airtime and rolls over for three months. BiZVoIP wants more up front, a R500 minimum top-up, but charges no monthly fee at all and that deposit is simply call credit you draw down.

Prepaid VoIP options compared

A like-for-like view of the no-monthly-rental options, plus the two no-contract systems worth knowing about if you also want PBX features.

Provider	Model	Entry	SA mobile rate	Best for
Afrihost Pure VoIP	Prepaid CallTime	~R50/mo min	R0.80/min	Low-volume business line
Axxess VoIP	Prepaid CallTime	No rental	R0.80/min	Existing Axxess customers
BiZVoIP	Pure PAYG	R500 top-up	~R0.45/min	Zero-commitment second line
Switch Telecom	Prepaid or postpaid	Per-second rates	Per published rate	Adding PBX features later
Euphoria Telecom	No-contract, per-second	From R65/ext/mo	Per-second billing	Full PBX, no lock-in

Switch Telecom is worth a look because it offers a prepaid payment option alongside its per-minute and unlimited plans, and it bills per second with no contract, so you can start prepaid and grow into PBX features. Euphoria is not strictly prepaid, but it earns a place here because it is month-to-month with genuine per-second billing from R65 per extension, which means no long lock-in even though there is a monthly seat fee.

Two things the old listicles get wrong

Prepaid VoIP roundups age badly, because providers retire products and quietly move pricing behind a quote. Two corrections worth making in 2026.

Webafrica Voice is no longer a live product. It has been removed from Webafrica’s catalogue, so any list still ranking it as a prepaid option is stale. If you want a number alongside Webafrica fibre, pair it with Afrihost or Axxess VoIP instead.
Telkom BizTalk is a contract plan, not prepaid. BizTalk packages are sold on monthly contracts from around R101, so they belong in a different comparison. Do not assume a familiar Telkom name means pay-as-you-go.

Watch the minimum spend: “no monthly fee” rarely means “no minimum”. Afrihost asks for roughly R50 of CallTime a month and BiZVoIP for a R500 opening top-up. Both are call credit you actually use, but budget for them so the bill is not a surprise.

How to choose a prepaid VoIP line

Five checks turn a prepaid line from a gamble into a deliberate, cheaper choice.

Estimate your real monthly minutesPrepaid wins under low volume. If you regularly pass a few hundred mobile minutes a month, price a flat or uncapped plan against it before committing.

Check the minimum spend and rolloverA minimum CallTime or opening deposit is normal. Confirm the amount and whether unused credit rolls over, as Afrihost’s does for three months.

Confirm the numbers you can getMake sure the service offers a geographic, 087 or toll-free number that fits how you want customers to see you.

Test call quality on your connectionVoIP rides your internet. Run a short trial on the same line your office uses before you move your main number.

Check you can port your number outNumber portability is your right under ICASA rules. Confirm you can leave with your number so a cheap line never becomes a trap.

Prepaid VoIP is not about being the cheapest headline rate. It is about paying for nothing you do not use, which is exactly right for a low-volume or backup line.

WhichVoIP editorial

A Desk Phone And Smartphone Side By Side On A Small-Business Desk In South Africa — Prepaid lines shine for second numbers, branch lines and backups, where a fixed monthly seat fee would be wasted.

Our verdict

Prepaid VoIP is a deliberately narrow tool, and used in the right place it is hard to beat. Afrihost Pure VoIP and Axxess VoIP are the safe default for a no-rental business line, with identical 40c landline and 80c mobile per-minute rates and per-second billing. BiZVoIP goes further with no monthly fee at all, in exchange for a larger opening top-up. The moment your call volume climbs, though, prepaid stops being the cheapest option, so price a flat or uncapped plan against your real minutes before you assume pay-as-you-go is the bargain.

Our recommendation: Use Afrihost or Axxess for a low-volume or backup line, BiZVoIP if you want zero monthly commitment, and switch to a flat or uncapped plan once you regularly pass a few hundred mobile minutes a month.

Not sure prepaid is your cheapest route?

Tell us your call profile and we will match you with South African VoIP providers, so you can compare prepaid against flat-rate plans on your real usage.

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Frequently asked questions

What is prepaid VoIP?

Prepaid VoIP is a voice-over-internet service where you load call credit up front and pay per call, with no monthly line rental. Calls are billed per second against your balance, so you only pay for what you use.

Is there a monthly fee for prepaid VoIP?

True prepaid services like BiZVoIP charge no monthly fee at all. Others, like Afrihost Pure VoIP, ask for a small minimum CallTime spend (around R50) that becomes usable airtime. Always check the minimum before signing up.

What is the cheapest prepaid VoIP in South Africa?

For low-volume use, Afrihost and Axxess offer the lowest barrier with no rental and 40c-a-minute local landline calls. BiZVoIP has no monthly fee but a higher R500 opening top-up. The cheapest for you depends on your monthly minutes.

Can I keep my existing number on a prepaid VoIP line?

Yes. Number portability is your right under ICASA rules, so most prepaid providers can port your geographic or 087 number in. Always confirm you can also port out before committing.

Do prepaid VoIP plans need a contract?

No. The defining feature of prepaid VoIP is that it is month-to-month with no lock-in, so the line costs nothing in a month you do not use it, beyond any minimum top-up.

Is Euphoria Telecom prepaid?

Not strictly. Euphoria is a month-to-month hosted PBX from R65 per extension with genuine per-second billing, so there is no long contract, but there is a monthly seat fee. It suits buyers who want full PBX features without lock-in.

Is Webafrica Voice still available?

No. Webafrica Voice has been removed from Webafrica’s catalogue, so it is no longer a current prepaid option. Pair Webafrica fibre with Afrihost or Axxess VoIP for a number instead.

Keep reading

Cheapest VoIP providers in SA
What “free” VoIP really means
Best VoIP providers in SA

Sources: Afrihost (afrihost.com/voip); Axxess (axxess.co.za/voip); BiZVoIP (bizvoip.africa); Switch Telecom (switchtel.co.za); Euphoria Telecom (euphoria.co.za/pricing); Webafrica (webafrica.co.za); ICASA number-portability rules. Verified June 2026.