We employ our own bookkeepers (in Africa) who operate a range of accounting systems for each company in the group (5 countries).
As CEO I tend to do the teaching and review but the team does the lodgement. (I am an Australian Chartered Accountant and former tax agent so get the rules fairly easily).
Most lodgements are online. The US is the exception. We also find there are free services for lodging electronically.
A lot of the accounting systems are way overpriced so we don't use many of their up market solutions.
We have built our own invoicing and Billing system this week with AI so expect we'll create more of our own apps over the coming year.
My bookkeeping team has some spare capacity so let me know if we can maybe help you out.