How would you bridge the gap between a company's budget, actual results, and latest forecast, and what techniques do you use?
A core FP&A interview question — asked in analyst and associate interviews across IB, PE, and the Big 4.
THE SHORT ANSWER
Keep the three roles distinct — budget is the committed baseline, actuals are what happened, forecast is the current best estimate — and bridge between them with variance decomposition. Budget→actual: build an EBITDA/earnings bridge splitting the variance into volume, price/mix, cost, FX, and one-offs, each with a root cause and an owner. Actual + remaining forecast → full-year vs budget: show where the year is now expected to land and the drivers of the gap (run-rate carrying forward, timing, new information). Techniques: a waterfall/bridge chart for the board, driver-based recomputation rather than top-down plugs, and a clear split of permanent vs timing variances (only permanent variances change the full-year outlook). I'd present it as a narrative — here's the gap, here's why, here's what we're doing — not just a table, and reconcile every bridge so the components tie to the total.
WHAT INTERVIEWERS LISTEN FOR
- ✓Keep budget (commitment) / actual / forecast distinct
- ✓Decompose variance: volume, price/mix, cost, FX, one-offs — root cause + owner
- ✓Permanent vs timing variances; only permanent change the outlook
- ✓Waterfall chart + narrative; components reconcile to the total
COMMON MISTAKES
- ✗Top-down plugs instead of driver-based decomposition
- ✗Not separating permanent from timing variances
- ✗A table with no narrative/root cause
Reading isn't the same as answering under pressure.
Interviewers don't hand you the model answer — you deliver yours on a clock. Practice this and 1,000+ questions with AI feedback on every answer.
RELATED QUESTIONS
- Explain the EBITDA bridge in variance analysis.
- A company is experiencing significant variance between its forecasted and actual results. What methods would you use to identify the underlying causes of the variance, and how would you present your findings to stakeholders?
- How do you forecast working capital?
- Explain the three-statement model.
- Explain contribution margin and how you use it.
- How do you handle FX in forecasting?