Answers / Financial Due Diligence
How do you analyze a gross-to-net revenue bridge, and what quality issues hide in the deductions?
A core Financial Due Diligence interview question — asked in analyst and associate interviews across IB, PE, and the Big 4.
THE SHORT ANSWER
The gross-to-net bridge walks from gross/list revenue down to reported net revenue through deductions: rebates, volume discounts, returns, chargebacks, promotional allowances, and price concessions. I analyze it because the deductions are where revenue quality erodes and where accounting judgement lives. Quality issues: under-accrued returns or rebates (overstating net revenue now, with a true-up later), growing deductions as a percentage of gross signalling deteriorating pricing power or channel stuffing, retroactive rebates tied to annual volume thresholds that spike at year-end, and inconsistent treatment across periods. I'd trend each deduction line as a percentage of gross, tie accruals to subsequent actual credits issued, and check whether reported growth is real or just lower deductions. The clean check is whether net revenue growth is volume/price-driven or deduction-accrual-driven.
WHAT INTERVIEWERS LISTEN FOR
- ✓Bridge gross → net via rebates, returns, discounts, allowances
- ✓Under-accrued deductions overstate current net revenue
- ✓Trend each deduction as % of gross over time
- ✓Tie accruals to subsequent actual credits
COMMON MISTAKES
- ✗Ignoring the deduction lines
- ✗Not testing accrual adequacy vs actual credits
- ✗Missing year-end rebate spikes/channel stuffing
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