How Bulk SMS Pricing Works in Tanzania (2026 Guide)

Bulk SMS in Tanzania is billed per message, not per month. You buy a bundle of SMS credits up front and each delivered message draws down one credit (long messages over 160 characters use more). That prepaid model keeps costs predictable and means there is no recurring subscription to cancel.

What determines the price per SMS

• Volume: the more credits you buy at once, the lower the per-SMS rate. Small bundles cost more per message than high-volume packages.
• Message length: a standard SMS is 160 GSM characters. Longer messages are split into segments and each segment is charged.
• Sender ID: a registered alphanumeric sender name (your brand) is a one-time approval, not a per-message cost.

Estimating a campaign budget

Multiply your recipient count by the number of SMS segments per message, then by the tier rate. For example, a 150-character message to 5,000 contacts is one segment each, so 5,000 credits. Keep a buffer for opt outs and invalid numbers, which are removed automatically during sending.

How to keep costs down

• Keep messages under 160 characters where possible to avoid multi-segment charges.
• Clean your contact list so you are not paying to send to dead numbers.
• Buy larger bundles to unlock lower per SMS tiers if you send regularly.
• Use scheduled campaigns and reminders instead of adhoc resends.

You can see the current DARSMS tiers on the pricing page and buy credits instantly with mobile money. Delivery reports show exactly which messages reached each recipient, so you always know what your spend delivered.