If you have landed a graduate interview for a finance firm this year then congratulations. 
You just secured your entry to a multi-stage race against thousands of competitors. Now the hard work begins.
In this article I'm going to help you understand the types of questions you could face.

The difference between someone who performs really well at interview and someone who doesn’t, is preparation and practice. 
You must practice speaking your answers out loud. Don't let the first time you do this be in the interview itself. Don't use the interview as your practice session.

This sounds kind of obvious doesn't it? And yet thousands of people still make this mistake. 
How do I know this? 
Because I've interviewed over 10,000 people for jobs in finance and banking. And I can immediately tell whether the person is prepared or not.

Just because you may not have had a full-time job before, doesn't mean that you haven't amassed experiences. Describing your experiences eloquently, clearly and concisely will help you stand out from the competition.

Financial firms want to know you've done your homework on them, so do so. Read their website, look at the businesses that they are in, look at their mission statement and values, and then go wider and read what's been happening to them in the media. Everyone will quote similar details and statistics, so try and find one or two interesting points about them that other interviewers might miss.

You're going to need to explain very clearly and convincingly:
1. Why this career?
2. Why this organisation?
3. Why this department?

These are industry standard. You're going to be asked competency questions and you need to be prepared for them. Use the STAR method to answer them, but remember to place the right amount of detail and time in the right stages of the STAR methodology. 
You should think about examples of teamwork, leadership, and dealing with tough situations or people. Practice saying these with as little ‘filler words’ as possible.

You don't want to sound OVER-prepared. If your answers sounds over rehearsed then this can count against you as well. You want your answers to sound as natural and conversational as possible.

Financial firms will test your technical knowledge. The questions will differ depending on which area of the firm you'll be working in so study your area well and be prepared to answer questions on how they go about their business.

Typical Investment Banking questions are divided into 6 categories:

1. Accounting 
(Example: Tell me what you know about the three most important financial statements)

2. Corporate Finance 
(Example: How do you calculate WACC?)

3. Valuations 
(Example: In which ways can a company be valued?)

4. Mergers and Acquisitions 
(Example: Tell me what you know about the process of a buy-side M&A deal)

5. IPO 
(Example: What are the befits for a company to get listed on an exchange?)

6. Miscellaneous 
(Example: Pitch me a stock)

How many disposable face-masks were sold in the US in 2020?

This is a brainteaser. It's designed to test how you think and work under pressure. You'll usually only receive this question if you're going for a role in sales & trading, where processing complex data  and thinking on your feet is a necessity. However you may also get these questions at a boutique firm if you're interviewing someone who received this question themselves during their graduate interview. People like to hand down tough questions.

Some financial firms are using App based assessments that use behaviour based neuroscience games that objectively measure cognitive, social and behavioural attributes. JP Morgan is known to use these and currently use the app ‘PYMETRICS’.