An audit intern is basically an entry level role at a public accounting firm and they typically deal with the grunt work. On my internship I worked with a team and they gave me the easier but monotonous assignments so that they could focus on the more complex stuff. But overall the assignments can vary, it just depends on what your senior/manager tells you to.
If you're staffed on a client, you show up to the client office site, go to the audit team room, and you'll start your tasks. In my experience, the senior already has a plan of what tasks to give to the audit intern and the budgeted (estimated) amount of hours it should take. You usually just go through your tasks, filling out and organizing excel spreadsheets, then you eat a team lunch, then back to working on your tasks. If you're unassigned for a period of time, you usually just go to the GT office and sit in a workspace. Then you would notify people that you are free and looking to help out with work. People will reach out to unassigned interns or you will hear about people who need some work done like helping to mail out confirmations or helping out on other audit team spreadsheets.
As an intern (summer audit intern), he/she helps the team they are assigned to with any tasks needed in auditing the company's financial statements. These tasks may include reconciling numerical entries, checking over board of directors' minutes, as well as a host of other confirmations to verify that financial information is represented in a true and fair view.
Taiwan's work culture (and other countries too) is very different than US. So going in to the internship you really had to be prepared for the cultural differences and not complain because that is the way they conduct business. First, transportation to clients offices or to Deloitte office is not covered unless you are traveling as a team. Full time employees do get transportation expense, but since interns weren't allow to file expenses, we had to use our own money. Depending on what team you are on, some seniors/ managers will help you out and pay for some of your transportation expense, but for most of my clients, they only did that on the first day to the clients so that they can show you where it is. The Deloitte internship in Taiwan was also a short internship of 4 weeks (1 week for training and 3 weeks out at clients) so that may be a prime reason why we couldn't file expense reports. So depending on what client I was on, I had commuting time varying from 10minutes to 1 hour (which isn't bad since US commutes are long, but 1 hour commute for a Taiwanese who is used to city public transportation, 1 hour is long). Once I get to my client, the 1st year or 2nd year associates usually are the ones that assign me tasks, but if they run out of things for me to do, then the seniors will assign me tasks. I was very fortunate to have a senior on one of my assignments to teach me the reasoning of why we are doing the tasks we are doing. For meals, depending on clients, 2 of the 3 clients I was on either ordered lunch for us everyday or gave us a meal budget and we got to go out and buy our own lunch. For my one other client that I was on, they did not provide lunch for us so we had to use our own money or bring our own lunch. Since we weren't allow to work over time, the seniors will usually send you home when the time is up.
Audit interns get assigned to various clients throughout the internship (between 2-3) and help their engagement team with tasks such as creating spreadsheets, helping roll forward work papers and running data analysis on financial statements. I spent a large amount of time using excel for my internship, as well as many other Deloitte specific programs. Audit interns typically will commute to their clients rather than working from the Deloitte building.
Audit intern's work varies because of different clients. If your engagement is not very intense, interns usually do some preparation works for further testing procedures. However, if it is busy season, interns may be engaged in more complicated tasks.
The work an intern does typically varies firm to firm. I've had an audit internship where I just rolled forward documents and prepared excel sheets for auditors. This would vary from aging receivables to transferring data from a general ledger detail. I've also had an internship that was more hands on. My day typically day would be going out to a client for a few days to two weeks. While at the client, I would perform financial and compliance tests on areas ranging from cash, accounts payable, expenditures, and payroll. Typically with cash, we'd receive bank confirmations verifying the amount of cash a client had. Then we'd trace that to a bank rec and then review any outstanding checks and deposit-in-transits. Any check or deposit that was a significant amount, we'd verify that it existed and cleared. With account payable and expenditures, we'd pull invoices for significant amounts and make sure they were properly processed and, if the client uses the accrual method of accounting, we'd verify that they're recognizing the bill in the proper fiscal year. If you're considering taking on an audit internship, I'd recommend reading about people's experience or speaking to people who've interned at a specific firm you're thinking about interning for, because the work you'll do does vary between firms.