Plans differ in what they count: minutes, calls, unique callers or a flat fee. A plan with a low monthly price can cost more than a larger plan once overage applies.
Check the billing increment as well. When billing is per started minute, a call of 2 minutes 10 seconds counts as 3 minutes.
Our calculator applies each provider's stated overage price to your call profile.
As of November 11, 2026. General information, not legal advice.