Barclays — Investment Banking Mock Interview
Compound interest, CAGR mechanics, the 2008 financial crisis, EV industry analysis, and PE pricing frameworks
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How to Prepare for Barclays Interviews
Prepare a Thorough 2008 Financial Crisis Narrative
Barclays asks for a comprehensive walkthrough of the 2008 crisis causes. Structure your answer around five pillars: sub-prime lending expansion, securitization and CDOs, rating agency failures, excessive financial institution leverage, and the regulatory gap in shadow banking.
Have an Industry View Ready With Multiple Perspectives
The EV industry question expects you to cover growth tailwinds (policy, battery costs), competitive landscape (Tesla versus legacy OEMs), real challenges (charging infrastructure, supply chain, profitability), and banking-relevant implications (deal flow, valuation dynamics). Apply this framework to any industry you might be asked about.
Know the Reverse-Engineered LBO Pricing Framework
Barclays asks how a PE firm determines the price it should pay. Understand the process: set target IRR, project cash flows, model debt capacity, iterate purchase price until returns hit the hurdle rate. This 'underwriting to a price' concept is fundamental to PE acquisition analysis.
Practice Mental Math Shortcuts
The interview tests compound interest over seven years (requiring sequential multiplication) and the difference of squares shortcut for multiplication (27 times 33 equals 30 squared minus 3 squared). Memorize key compounding factors and algebraic identities for speed.
What Makes Barclays Interviews Unique
Comprehensive 2008 Financial Crisis Walkthrough
Barclays devotes significant interview time to the 2008 crisis, expecting candidates to trace the chain from sub-prime lending through securitization, rating failures, leverage, regulatory gaps, and ultimately systemic contagion. This depth of historical market knowledge testing is distinctive.
Single Best Financial Line Item Selection
A unique question asks which single GAAP line item you would choose to assess company health. The expected answer is cash flow from operations because it captures real cash generation, adjusts for non-cash items, and is harder to manipulate than net income.
Electric Vehicle Industry Analysis as an Interview Topic
Rather than asking about a company or deal, Barclays tests your ability to analyze an entire industry (EVs) with balanced coverage of growth drivers, competitive dynamics, structural challenges, and implications for investment banking deal activity.
Chessboard Squares Combinatorics Brain Teaser
The closing question asks how many total squares exist on a chessboard (204, not just 64). This requires recognizing that squares of sizes 1x1 through 8x8 all count, computing the sum of squares formula, and demonstrating systematic problem-solving.
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About This Barclays Mock Interview
This session simulates a Barclays technical interview covering compound interest calculation over seven years, mental math using the difference of squares shortcut, CAGR definition and calculation, choosing the single best GAAP line item for assessing company health (cash flow from operations), football field valuation charts, sub-prime lending definition, a comprehensive walkthrough of the 2008 financial crisis causes (lax underwriting, securitization, rating agency failures, excessive leverage, regulatory gaps), electric vehicle industry analysis including tailwinds, challenges, and banking implications, PE firm acquisition pricing through reverse-engineered LBO analysis, and the chessboard squares brain teaser.
This topic is part of the Firms section of our investment banking mock interview library. Each session includes multi-speaker audio with realistic interviewer questions and candidate responses, plus a full interactive transcript you can follow along with or study independently.
Audio Recording
13 minutes of multi-speaker audio
Full Transcript
Interactive transcript with timestamps
1 Technical Session
Barclays - Technical Interview
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Check out IB Vine, specifically the 'IB Vine Select' questions. Once you can get a handle of those, it seems like you are in a spot where you're applying the concepts rather than simply memorizing them
Analyst
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Seen on WallStreetOasis
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Seen on Twitter
heard all the new kids use IB Vine now. the questions on IB Vine helped me get the concepts down when I had to recruit and make a lot of BB/MM interviews easier than I expected for techs
User Story
Just got off the phone with a kid who interned at a Dallas PE firm. He mentioned that IB Vine helped him secure that internship as well as his Summer Analyst offer, especially since he came from a non-target with no resources.
Analyst
The IB Vine technical prep is beyond helpful, it's so much more fun quizzing myself every now and then vs. reading through the guides again.
Analyst
I personally found that the 'IB Vine Select' collection had some of the exact questions I was asked in my Qatalyst interviews.
Analyst
Thanks for starting up IB Vine. Couldn't have landed my offer without your help!
User Story
I honestly think you're doing gods work since IB Vine democratizes the whole interview process and helps a lot of students ace their interviews.
Analyst
I found this website really helpful, which also helps me better prepare for the technical interview in IBD position and get an offer.
Seen on WallStreetOasis
Check out IB Vine, specifically the 'IB Vine Select' questions. Once you can get a handle of those, it seems like you are in a spot where you're applying the concepts rather than simply memorizing them
Analyst
I've used IB Vine for my recruitment, and I could not imagine the journey without it. Thank you for creating a phenomenal resource.
Seen on WallStreetOasis
Beyond the 400 questions guide, try to understand a deeper level and the underlying concepts of the questions being asked. Use ibvine, it really helps.
Seen on WallStreetOasis
IB Vine has excellent questions, especially multistep ones. In my experience I've gotten grilled on accretion/dilution, bond math, and merger model questions. IB Vine has great practice for all of those.
User Story
As a nontraditional transfer student who has been rendered unavailable to many resources at my university (Leadership positions at clubs, immediately behind the recruiting cycle, etc.) IB Vine has been an absolute game changer in my IB prep.
Seen on WallStreetOasis
From my experience interviewing FT for IB, it’s not enough to just know the 400 questions anymore (it’s a good starting point) but to look at even more advanced questions. Would recommend IB Vine.
Seen on Twitter
heard all the new kids use IB Vine now. the questions on IB Vine helped me get the concepts down when I had to recruit and make a lot of BB/MM interviews easier than I expected for techs
User Story
Just got off the phone with a kid who interned at a Dallas PE firm. He mentioned that IB Vine helped him secure that internship as well as his Summer Analyst offer, especially since he came from a non-target with no resources.
Analyst
The IB Vine technical prep is beyond helpful, it's so much more fun quizzing myself every now and then vs. reading through the guides again.
Analyst
I personally found that the 'IB Vine Select' collection had some of the exact questions I was asked in my Qatalyst interviews.
Analyst
Thanks for starting up IB Vine. Couldn't have landed my offer without your help!
User Story
I honestly think you're doing gods work since IB Vine democratizes the whole interview process and helps a lot of students ace their interviews.
Analyst
I found this website really helpful, which also helps me better prepare for the technical interview in IBD position and get an offer.
Seen on WallStreetOasis
Check out IB Vine, specifically the 'IB Vine Select' questions. Once you can get a handle of those, it seems like you are in a spot where you're applying the concepts rather than simply memorizing them
Analyst
I've used IB Vine for my recruitment, and I could not imagine the journey without it. Thank you for creating a phenomenal resource.
Seen on WallStreetOasis
Beyond the 400 questions guide, try to understand a deeper level and the underlying concepts of the questions being asked. Use ibvine, it really helps.
Seen on WallStreetOasis
IB Vine has excellent questions, especially multistep ones. In my experience I've gotten grilled on accretion/dilution, bond math, and merger model questions. IB Vine has great practice for all of those.
User Story
As a nontraditional transfer student who has been rendered unavailable to many resources at my university (Leadership positions at clubs, immediately behind the recruiting cycle, etc.) IB Vine has been an absolute game changer in my IB prep.
Seen on WallStreetOasis
From my experience interviewing FT for IB, it’s not enough to just know the 400 questions anymore (it’s a good starting point) but to look at even more advanced questions. Would recommend IB Vine.
Seen on Twitter
heard all the new kids use IB Vine now. the questions on IB Vine helped me get the concepts down when I had to recruit and make a lot of BB/MM interviews easier than I expected for techs
User Story
Just got off the phone with a kid who interned at a Dallas PE firm. He mentioned that IB Vine helped him secure that internship as well as his Summer Analyst offer, especially since he came from a non-target with no resources.
Analyst
The IB Vine technical prep is beyond helpful, it's so much more fun quizzing myself every now and then vs. reading through the guides again.
Analyst
I personally found that the 'IB Vine Select' collection had some of the exact questions I was asked in my Qatalyst interviews.
Analyst
Thanks for starting up IB Vine. Couldn't have landed my offer without your help!
User Story
I honestly think you're doing gods work since IB Vine democratizes the whole interview process and helps a lot of students ace their interviews.
Analyst
I found this website really helpful, which also helps me better prepare for the technical interview in IBD position and get an offer.
Seen on WallStreetOasis
Check out IB Vine, specifically the 'IB Vine Select' questions. Once you can get a handle of those, it seems like you are in a spot where you're applying the concepts rather than simply memorizing them
Analyst
I've used IB Vine for my recruitment, and I could not imagine the journey without it. Thank you for creating a phenomenal resource.
Seen on WallStreetOasis
Beyond the 400 questions guide, try to understand a deeper level and the underlying concepts of the questions being asked. Use ibvine, it really helps.
Seen on WallStreetOasis
IB Vine has excellent questions, especially multistep ones. In my experience I've gotten grilled on accretion/dilution, bond math, and merger model questions. IB Vine has great practice for all of those.
User Story
As a nontraditional transfer student who has been rendered unavailable to many resources at my university (Leadership positions at clubs, immediately behind the recruiting cycle, etc.) IB Vine has been an absolute game changer in my IB prep.
Seen on WallStreetOasis
From my experience interviewing FT for IB, it’s not enough to just know the 400 questions anymore (it’s a good starting point) but to look at even more advanced questions. Would recommend IB Vine.
Seen on Twitter
heard all the new kids use IB Vine now. the questions on IB Vine helped me get the concepts down when I had to recruit and make a lot of BB/MM interviews easier than I expected for techs
User Story
Just got off the phone with a kid who interned at a Dallas PE firm. He mentioned that IB Vine helped him secure that internship as well as his Summer Analyst offer, especially since he came from a non-target with no resources.
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