proration

Utility for calculating the next billing date for a recurring subscription.

Exact-decimal usage-based billing engine in Go with proration, graduated tiers, storage accrual, and PostgreSQL schema.

Advanced billing engine for Laravel: subscriptions, proration, usage metering, addons, credit notes, and pluggable invoice/tax drivers on PostgreSQL. Built for SaaS, IaaS, and usage-based products.

A recurring billing engine for SaaS products: plans with seats and metered add-ons, trials, coupons, mid-cycle changes with exact proration, period invoicing with VAT, card dunning, signed webhooks and MRR/churn metrics, all driven by an injectable clock so any month can be billed and replayed deter

Usage-based billing rating for Go — tiered, volume, package and per-unit pricing to exact line items. Zero dependencies, no float, no infra.

Payment and subscription slice for a digital library app. Monthly/yearly plans via Flutterwave, with proration, webhook-verified entitlement, and an append-only payment log.

Subscription billing as a state machine: trials, renewals, dunning, proration, cancellation. Exact Decimal money, zero dependencies.

A clean, developer-friendly subscription billing abstraction layer for PHP that brings Stripe-like subscription and proration features to Paystack and Flutterwave.

Recurring billing schedules and revenue splitting, with exact money arithmetic. Java 21, no dependencies.

Audit subscription plan change docs for upgrades, downgrades, proration, invoices, refunds, entitlements, permissions, previews, webhooks, support, audit, and ownership.

Merger Predecessor/Successor Mapping — https://thefintechbuilder.com/corporate-actions-and-security-master-data/identity-continuity/merger-predecessor-successor-mapping/

Subscription proration in exact integer arithmetic where splitting a period never moves a cent

Stripe Proration behavior enum