Subscription Billing | Billing Automation

The renewal-to-cash loop, with no one in the middle.

The renewal worker generates the invoice, the invoice posts to receivables, the charge collects, and the cash applies, end to end. Exceptions surface on a queue. The happy path needs no human at all.

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What the system does

Capability, input, output.

Capability	Input	Output
Renewal worker	Billing cycle due date and subscription state	Invoice generated and linked to the cycle via BillingCycle.invoiceId
Invoice posting	Generated invoice from the billing engine	Real AR invoice posted to receivables as the system of record
Auto-charge	Stored payment method on the subscription	Charge collected against the invoice on the cycle
Cash application	Payment confirmation from the gateway	Receipt applied to the invoice, balance cleared
Exception queue	Any step that fails the happy path	Item surfaced for review, rest of the queue unblocked
Idempotency	Retry or webhook replay for any step	Safe re-execution with no duplicate invoice or charge

Renewal worker

Input

Billing cycle due date and subscription state

Output

Invoice generated and linked to the cycle via BillingCycle.invoiceId
Invoice posting

Input

Generated invoice from the billing engine

Output

Real AR invoice posted to receivables as the system of record
Auto-charge

Input

Stored payment method on the subscription

Output

Charge collected against the invoice on the cycle
Cash application

Input

Payment confirmation from the gateway

Output

Receipt applied to the invoice, balance cleared
Exception queue

Input

Any step that fails the happy path

Output

Item surfaced for review, rest of the queue unblocked
Idempotency

Input

Retry or webhook replay for any step

Output

Safe re-execution with no duplicate invoice or charge

Standards + connections

Automation wired to the systems that bill, collect and book.

Billing automation is not a standalone queue. Each step in the loop connects to the module that owns it: receivables owns the invoice, payments own the charge, and the ledger owns the cash. A single renewal drives all three without duplication.

Regulations we work within

AR is the system of record

Every invoice generated by the renewal worker posts to receivables as a real AR document. Billing keeps the link, not a second copy of the revenue.
Idempotency by design

Every step carries an idempotency key so retries, webhook replays and network failures cannot produce duplicate invoices or duplicate charges.
Audit trail

Each transition in the renewal-to-cash loop is logged with timestamp and outcome, so every invoice, charge and receipt is traceable from the originating cycle.

Connects to

Accounts Receivable Invoice posting and receipt application
Payments Auto-charge, retries and gateway webhooks
Accounting Cash posted to the ledger on application
Exception Queue Failed steps routed for human review

Billing Automation FAQ

What buyers ask.

What triggers the renewal and who schedules it?

The renewal worker runs on a schedule aligned to each billing cycle due date. When a cycle comes due, the worker picks it up, generates the invoice, posts it to receivables and hands off to the payment step. No human action starts the sequence on the happy path.

What happens when a step in the loop fails?

The failing item moves to the exception queue for review. The rest of the renewal queue continues unblocked. Once the issue is resolved, the item re-enters the loop from the failed step, and idempotency keys ensure no duplicate invoice or charge is created on the retry.

How does billing automation handle webhook replays safely?

Every step in the loop carries an idempotency key derived from the subscription, cycle and step. If a webhook fires twice or a retry lands after a success, the engine detects the key and returns the original result without re-executing. Duplicate invoices and duplicate charges cannot occur.

Does the automation work for net-terms invoices as well as auto-charge?

Yes. The renewal worker generates and posts the invoice regardless of collection method. For auto-charge subscriptions the charge step follows immediately. For net-terms subscriptions the invoice is sent to the customer and the cash application step waits for the payment to arrive. Both paths run on the same loop.

Related features

See the full loop run on a test subscription.

Trigger a renewal, watch the invoice post to receivables, the charge collect and the cash apply, end to end. Then break a step and see it surface on the exception queue.