I'm not sure what the name of the service or person(s) I'm looking for, so I'm asking here hoping I can find the right thing to search for, and maybe even some recommendations.
We need someone we can hand our taxes to in their entirety and know they'll be taken care of. Accountants and bookkeepers so far have pushed most of the maintenance back on us. We're buried in work, and need to focus on it. We need to have the entire tax problem taken off our hands, right down to "We can't find this document, we'll do what's necessary to obtain a new copy" rather than putting it back on us.
Ideally they'd be able to handle as much as possible electronically and get things automated. Everything tax-related - payroll, quarterly filings, and hunting down what's necessary to get it done. If they need to work with an accountant or bookkeeper that's fine.
So, what sort of service provider is that? We're generally looking for something we can pay for on a monthly basis or hourly - we unfortunately aren't big enough to hire a full role for this (it's a 2-person company).