How long does the Aon interview process take?

Most candidates spend between 4 and 8 weeks from recruiter screen to offer. The onsite loop itself runs in a single day or is split across two half-days, with debrief and offer typically within 5 business days after.

How should I prepare specifically for Aon?

Focus on three things: (1) the company DNA shown above — what they actually grade for, (2) the rounds in your loop, especially the round most candidates underestimate, and (3) drilling on the question types in this guide using a structured framework like CIRCLES or STAR.

Does this apply to engineering or design roles at Aon?

The DNA stays the same — what changes is the round mix. SWE candidates face coding screens instead of Product Sense; designers face portfolio reviews and design exercises. The "what they value" and behavioral signals carry across all functions.

Other roles at Aon:IB Analyst Sales Product Manager Strategy Consultant

Enterprise · IB Analyst Interview Guide

How to Pass the Aon IB Analyst Interview in 2026

The Aon DNA (TL;DR)

Aon values strong analytical and problem-solving skills, especially in risk assessment and data interpretation. They look for candidates who demonstrate client focus, effective communication, and a collaborative mindset, aligning with their professional services culture.

The Aon Interview Loop

Your onsite loop will typically consist of 4 rounds.

1
Round 1
Recruiter Screen
Motivation, fit, GPA, deal interest.
2
Round 2
Technical Screen
Accounting, valuation (DCF, comps, precedent transactions), enterprise vs equity value.
3
Round 3
Market Knowledge
Recent deals, market events, sector outlook, why this firm.
4
Round 4
Superday
Multiple back-to-back interviews with MDs/VPs covering technical + behavioral + fit.
5
Round 5
Behavioral / Leadership
Past evidence of ownership, influence, resolving conflict.

The Danger Zone: Top Reasons Candidates Fail

Based on our database of Aon interview outcomes, avoid these common traps:

Focusing solely on compensation or prestige without demonstrating genuine interest in the work.
Focusing only on winning the argument rather than finding a collaborative solution.
Confusing the components of each (e.g., including minority interest in Enterprise Value).
Describing a situation that was easily resolved without demonstrating significant effort or skill.

Test Yourself: Real Aon Questions

Three real prompts pulled from our database.

Type · Past Experience

Tell me about a time you had to make a difficult trade-off in a project due to resource constraints or competing priorities. How did you make the decision, and what was the outcome?

Type · Behavioral/Fit

Describe a time you had to work on a project with a tight deadline and limited resources. How did you prioritize tasks and manage your time effectively?

Type · Valuation

Walk me through a Discounted Cash Flow (DCF) analysis. What are the key components, and what are common pitfalls in projecting free cash flows?

+ many more questions, signals, and worked examples

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Aon Interview Question Bank

A sample from our database, grouped by round. Sign up to see the full set.

9 of 19 questions shown

Recruiter Screen

1
Type · Motivation
Why are you interested in investment banking, and specifically why Aon's finance advisory practice?

Technical Screen

2
Type · Valuation
Walk me through a Discounted Cash Flow (DCF) analysis. What are the key components, and what are common pitfalls in projecting free cash flows?
3
Type · Valuation
How would you value a company using Comparable Company Analysis (Comps)? What are the most important multiples to consider, and what adjustments might be necessary?
+ 1 more questions in this round (sign up to unlock)

Market Knowledge

4
Type · Market Trends
What are some of the most significant trends you've observed in the insurance brokerage or broader financial services M&A market recently? How might these impact Aon's advisory business?
5
Type · Deal Knowledge
Can you discuss a recent M&A transaction (within the last 6-12 months) that you found particularly interesting? What were the key drivers, and what was Aon's potential role?
+ 1 more questions in this round (sign up to unlock)

Superday

6
Type · Technical
Imagine Aon is advising a client on acquiring a mid-sized technology company. What are the key financial metrics and strategic considerations you would focus on during the due diligence process?
7
Type · Technical
If a company has negative EBITDA, how would you approach valuing it using multiples? What alternative valuation methods might be more appropriate?
+ 1 more questions in this round (sign up to unlock)

Behavioral / Leadership

8
Type · Past Experience
Tell me about a time you had to influence a senior stakeholder or a cross-functional team to adopt your product vision or strategy when they were initially resistant.
9
Type · Past Experience
Tell me about a time you had to make a difficult trade-off in a project due to resource constraints or competing priorities. How did you make the decision, and what was the outcome?
+ 7 more questions in this round (sign up to unlock)

Unlock the full Aon question bank

Free signup, no credit card. You get every question + the framework, grading signals, and worked answer for each.

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Interview tracks at Aon

How Aon's DNA translates across functions. Pick your role.

For financial advisory roles, Aon seeks strong quantitative skills, financial modeling proficiency, and an understanding of capital markets. Candidates must also demonstrate client communication abilities and a keen eye for risk management in transactions.

Past Experience

Tell me about a time you had to make a difficult trade-off in a project due to resource constraints or competing priorities. How did you make the decision, and what was the outcome?

Behavioral/Fit

Describe a time you had to work on a project with a tight deadline and limited resources. How did you prioritize tasks and manage your time effectively?

+ 1 more

Unlock the IB Analyst grading rubric for Aon

See full IB Analyst guide