Audit engagement

Full subscription billing audit

A period-based review that traces active subscriptions from contract terms through invoices, credits, and renewals.

Full subscription billing audit
Timeline3–6 weeks
DeliveryRemote document review with on-site walkthroughs in Hong Kong when useful
Fee basisFixed fee by subscriber count and period length
FormatDocument review + discrepancy register

Who this is for

Controllers, finance directors, and founders of subscription businesses who need an independent check that recurring charges match what customers agreed to pay. Typical clients run membership clubs, publishing renewals, managed service retainers, or usage-capped plans billed monthly or annually.

Result you receive

A discrepancy register listing overcharges, undercharges, missed credits, stale rates after amendments, and renewal dates that drifted from the contract. Each line cites the source document, the billed amount, and a recommended correction. We also deliver a short narrative memo for management and, when requested, a briefing session with your billing clerk or auditor.

Scope

Included

  • Sampling or full population review of active subscriptions for an agreed period (usually the last 6 or 12 months)
  • Comparison of invoice lines to order forms, amendments, price lists, and discount schedules
  • Checks on proration, mid-cycle upgrades/downgrades, free months, and promotional end dates
  • Review of credit notes, write-offs, and failed-payment re-attempts tied to the sample
  • Written findings, severity ranking, and recommended remediation steps

Excluded

  • Statutory financial statement audit or tax filing
  • Rewriting your billing system configuration
  • Customer collections or dispute negotiation on your behalf
  • Continuous monitoring after the engagement closes (available as a separate retainer)

How we work

  1. Intake — You share a subscriber export, invoice extract, and a pack of commercial documents. We confirm the review period and materiality threshold.
  2. Mapping — We map charge types to contract clauses and build a working file of expected vs billed amounts.
  3. Testing — We test the sample, flag exceptions, and request clarifications where documents conflict.
  4. Delivery — You receive the discrepancy register and memo. Optional half-day walkthrough at our Kwai Chung office or at your premises.

Timeline and delivery

Most engagements finish in three to six weeks depending on export quality and how quickly clarifications return. Work is primarily remote document review; we schedule on-site sessions in Hong Kong when paper files or live billing walkthroughs help.

Preparation

Please nominate a single contact who can answer billing questions within two business days. Exports should include subscriber ID, plan name, list price, billed amount, invoice date, renewal date, and credit/debit notes for the period.

Constraints

We need read access to commercial documents and billing exports. We do not require production system logins if clean exports are available. Materiality below an agreed dollar threshold may be summarised rather than listed line by line.

Fees

Fees are fixed once we know subscriber count and period length. See the fees page for starting ranges, or request a scoped estimate.

Next step

Request this audit with your approximate active subscription count and the period you want reviewed.

Ask for a scoped estimate

Tell us your billing system, active subscription count, and the period you want reviewed.

Request this audit