Free tier: first 10 active wallets per month free, full API access in test mode. Production: $1 per active wallet per month (active = at least one transaction in billing month). First 1M events per month free. Volume discounts available.
Key features
Easy Access Savings Account
Lifetime ISA
Cash ISA
Stocks and Shares ISA
Self-Invested Personal Pension
Automated savings automations
95-day Notice Account
Plum Interest
Real-time usage metering and authorization before costs are incurred
Multi-asset wallets supporting USD, tokens, GPU hours, or custom units
Branded customer billing portal with self-service top-ups and history
Per-customer profitability analytics and event-level cost tracking
Support for usage-based, subscription, hybrid, credits, and seat-based pricing models
Hard budget ceilings per customer, agent, or team with real-time enforcement
Automatic top-up functionality when balance falls below customer-set threshold
MCP server integration for AI coding tools without backend required
REST API, OpenAPI spec, SDKs, and webhooks for developers
What makes it different
Automated savings without manual effort
Multi-product integrated approach to savings and investing
Real-time billing for usage incurred in milliseconds, not month-end invoicing
No revenue percentage cuts or payment processing markups, only per-wallet fees
Built by payment infrastructure engineers from Checkout.com, Visa, TrueLayer, and SumUp
Originated from Revenew platform that analyzed $1B/month in revenue
Plum
Credyt™