Revenue Audit
A focused review of revenue recognition, billing accuracy and income leakage — for businesses that need assurance their top line is being recorded, billed and collected correctly, not just reported correctly at year-end.
Revenue audit is a focused examination of how a company recognises, bills and collects its revenue — checking for income leakage (under-billing, missed charges, pricing errors), premature or delayed revenue recognition, and gaps between contracted terms and what's actually invoiced. It's especially relevant for businesses with complex billing (usage-based, tiered, multi-element contracts), high transaction volumes, or a history of revenue disputes. The Classic Partners LLP runs revenue audits as a standalone engagement or alongside internal audit, testing revenue recognition against Ind AS 115 and tracing transactions from contract to cash.
Finding the leakage between what was earned and what was billed
Revenue leakage rarely shows up as a single big number — it's usually many small gaps: a discount applied incorrectly, a renewal not invoiced on time, a usage-based charge undercounted. We trace transactions from contract terms through to invoice and cash receipt, testing recognition timing against Ind AS 115 along the way.
The output isn't just a finding list — it's a quantified leakage estimate and a set of control recommendations so the same gaps don't recur next quarter.
- Contract-to-cash transaction tracing
- Revenue recognition testing (Ind AS 115)
- Pricing, discount & billing accuracy checks
- Usage-based / tiered billing verification
- Income leakage quantification
- Control recommendations to prevent recurrence
When a revenue audit helps
Most valuable where billing is complex or leakage is suspected but unquantified.
| Situation | Why it's needed | What we deliver |
|---|---|---|
| Complex or usage-based billing | Manual/tiered billing is prone to under- or over-charging | Billing accuracy & leakage report |
| Revenue recognition disputes with auditors | Need independent testing against Ind AS 115 | Recognition timing review |
| Post-acquisition revenue review | Buyer needs assurance on reported top line | Contract-to-cash trace & findings |
| Suspected income leakage | Management suspects revenue isn't fully captured | Quantified leakage estimate |
What our revenue audit covers
Structured around contract-to-cash tracing and Ind AS 115 recognition testing.
Contract Review
Contracted pricing, discounts and billing terms mapped against actuals.
Recognition Testing
Revenue recognition timing tested against Ind AS 115 criteria.
Billing Accuracy
Invoices traced back to contract terms and usage/volume data.
Leakage Quantification
Under-billing, missed renewals and pricing errors quantified.
Cash Trace
Revenue traced through to actual cash collection.
Control Recommendations
Practical fixes to prevent the same leakage recurring.
Our four-stage revenue audit process
Built to quantify leakage, not just describe it.
Scoping
Identify revenue streams, contract types and billing systems in scope.
Contract-to-invoice trace
Sample transactions traced from contract terms to what was actually billed.
Leakage quantification
Gaps consolidated into a quantified income leakage estimate.
Findings & controls
Report delivered with root causes and control recommendations.
Revenue audit that gives you a number, not just observations
Ind AS 115-based testing, fixed-fee and scoped to your billing model.
Ind AS 115-based testing
Recognition timing tested against the current standard, not rules of thumb.
Quantified findings, not just observations
Every leakage finding comes with an estimated value.
Works across usage-based & subscription billing
Experience with tiered, metered and multi-element contract structures.
Fixed-fee, scoped engagement
A written quote for the defined scope, agreed before work begins.
Can run alongside internal audit
Scoped as a standalone review or a module within a broader internal audit plan.
One firm, all compliance
Works alongside our internal audit and statutory audit practices.
Revenue audit questions we're asked
Straight answers before you commission a revenue audit.
Ready to find your revenue leakage?
Tell us your billing model and where you suspect the gaps are. You'll get a fixed quote and a partner-level contact within one working day.
