Bill8
Bill8 is the billing and payments vertical of the Sentin8 platform: merchants, checkout, recurring billing, a double-entry money engine, signed webhooks, and fraud screening.
What it is
A complete monetization stack for platform businesses — everything between "customer decides to buy" and "money is in your ledger," built on the same double-entry discipline as Bank8.
The business case
- Recurring revenue without a billing team. Recurring billing, proration, dunning, and plan changes are solved problems here — your team focuses on growth, not invoice edge cases.
- A ledger that reconciles itself. The double-entry money engine means your finance team's numbers match your product's numbers, always.
- Fraud screening before the chargeback. Screening runs at checkout, so fraudulent transactions are declined before they cost you fees and disputes.
- Webhooks your engineers can trust. Signed, ordered webhook delivery removes the "did you get my event?" support tickets that plague payment integrations.
Core capabilities
| Capability | Why it matters |
|---|---|
| Merchants & checkout | Hosted and embedded checkout with multiple merchant support. |
| Recurring billing | Subscriptions, proration, trials, and dunning out of the box. |
| Double-entry money engine | Reconciliation-grade accounting for every charge and refund. |
| Signed webhooks | Cryptographically verifiable integration events. |
| Fraud screening | Risk checks at checkout to cut chargebacks and abuse. |
Who it's for
- SaaS and platform companies that need enterprise-grade billing without building it in-house.
- Marketplaces managing multiple merchants with split money flows.
- Fintechs embedding payments into vertical products.