“IT” (information technology) covers a broad range of services. These days, even accounting could be considered “IT” (and, in fact, a large portion of my revenue comes from troubleshooting accounting software, and helping clients understand and use technology in various forms). So, you’d have to get more info from the prospect.
I have (or have had) clients that do computer repair, security system installation, development of food processing technology, and even software development (was not a client for more than a year). None of those clients had/have accounting complexities that were beyond the capabilities of an average accountant. For example:
The client that develops food processing technology was initially very secretive about their business deals, because it is still the only company in Canada that provides that particular technology. So, for the first couple years, they wouldn’t tell me when they had purchased a $100,000 machine from their counterpart in India, or when they had installed that machine at a customer’s location, because no money had changed hands (except maybe a $5,000 deposit). That is, they didn’t understand the concept of accounts payable/receivable. Even when I saw the deposit in their bookkeeping records, and asked about it, they were reluctant to share a copy of the legal agreement that detailed what was going on, and it was not clear (until I read that agreement) whether these machines should be considered inventory or capital assets (in this case, it was a capital asset, and they have a revenue sharing agreement with their “client” - the client uses the machine to process grain into various products which are then sold to grocery stores, etc).
The only clients that have had accounting complexities which “taxed” my capabilities have been construction companies - particularly due to the GST and PST issues regarding real-estate. I have yet to see a GST rebate application go smoothly. For example, a few years ago (when I first saw this situation) I didn’t know there was a different rebate form for new residential rental properties as opposed to houses built to be sold. And, when you call CRA to ask how to report a GST rebate like this, you get different answers - “DON’T report it on the normal GST return”, “DO report it on the normal GST return”, “include it in line 101”, “exclude it from line 101”, etc. And every rebate application gets reviewed, and even the CRA auditors give you different instructions on how you “should have” reported it.