What the number really represents
The monthly figure shown above is your raw Meta API spend at current per-message rates. It does not include the cost of your CRM, your inbox software, AI replies, broadcast scheduling, consent management, or the engineering time to wire all of that together. Most teams budget the API spend correctly and then under-budget the surrounding stack by 5-10x.
The pricing model that changed on 1 July 2025
Before July 2025, Meta billed in 24-hour conversation windows. A single conversation could cost £0.05-0.10 depending on category, but it covered an unlimited number of messages within that window. After July 2025, every template message is billed individually. Non-template Service messages within the 24-hour customer-initiated window are free; everything else is per-message.
The practical impact for a clinic sending appointment reminders: the cost dropped by 60-70%. For an e-commerce business doing marketing broadcasts: the cost stayed roughly flat or rose 5-10%. For an auth provider sending OTPs: rates went down meaningfully.
When the BSP markup is worth paying
If you are sending fewer than 5,000 messages a month and do not have engineering resource, the 15-25% BSP markup buys you: hosted templates, deliverability dashboards, no Meta-side billing setup, and a ready-made web inbox. Below that volume threshold the absolute pound amount of the markup is small, and the engineering cost of going direct is real.
Above 10,000 messages per month, the markup starts to bite. A 20% markup on £400/mo of Meta spend is £80/mo or £960/year. NuvenarHub Pro at £480/mo gives you the same direct Cloud API access and a full CRM, AI replies, broadcast scheduling, and an audit-ready consent layer.
What this calculator does not estimate
- Quality rating downgrades. If your number gets marked "Low" quality, Meta caps your daily message limit. Volume calculations assume Green / Medium quality.
- Conversation limits. Lower-tier accounts cap at 1,000 unique customers per 24 hours. Plan for that ceiling separately.
- Template approval delays. A 48-hour template review can cost more in missed campaign timing than three months of API spend.
- Twilio / BSP support fees. Some providers add a flat monthly platform fee on top of per-message rates. Set BSP markup higher to approximate.