OneChat · WhatsApp Business API calculator

Estimate the cost of your WhatsApp Business messages

Estimate monthly spend by recipient market, message category and delivered-message volume. Compare Meta's official July and October 2026 rate cards.

Sales professional helping a customer through OneChat
More context for every sales conversation
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Set up your estimate

Estimate Meta's variable charge for the selected period using official rates and progressive volume tiers.

CategoryMessages per monthList rateSubtotal
MarketingPromotions, offers and re-engagement.
List rate$0.0125USD
Subtotal$12.50
UtilityTransactional updates requested by the customer.Marginal tier applied: 1–100,000 · $0.0008 · list rate
List rate$0.0008USD
Subtotal$0.80
AuthenticationLogin codes and identity verification.Marginal tier applied: 1–120,000 · $0.0008 · list rate
List rate$0.0008USD
Subtotal$0.00
International authenticationAvailable in 9 eligible markets for the selected period. The estimate continues from authentication volume already accumulated that month, as Meta specifies.
List rateNot available
SubtotalNot available
ServiceNon-template replies the business sends inside an open customer-service window. No Meta charge in this period.
List rate$0.0000USD
Subtotal$0.00

Official volume tiers

The subtotal is calculated progressively: each block of messages keeps its tier's rate.

Marginal tier appliedUtility1–100,000 messages$0.0008 USD · list rate
Marginal tier appliedAuthentication1–120,000 messages$0.0008 USD · list rate

Potentially no-charge messages

Track them separately: they appear in the summary but do not increase the estimated cost.

Messages customers send to your WhatsApp number do not incur a Meta charge.

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Calculate by market, category, currency and volume tier.

Compare rates through September and from October 2026

Choose from up to 47 markets and regions, depending on the period

Calculate 1,000 included service messages per phone number