Right now I'm using QuickBooks for the book keeping, and a simple file structure that looks like this:Property namePurchase docs PicturesTenant leasesPaper trailYear 1 (e.g. 2015)InsuranceMortgage StatementsOwner StatementsProperty TaxesHOAYear 2 (e.g. 2016)I also have been using Excel to keep track of the occupancy status of properties and vacancy.  

What have you been paying, for what services; personal return, corporate return, bookkeeping, tax advice, segregated capital calculations, etc.I have been using a firm for corperate and personal returns.

I am a bookkeeper who has many years experience of working with clients with properties. 

My wifey and I have been married 41 years, and worked together on R.E and bookkeeping 24/7 for at least 39 of those!

- I have systematized a lot of bookkeeping tasks by using memorized transactions (when possible).- I have created an excel based rehab budgeting tool that we use to develop our budget when we have a property under contract.

Do bookkeeping?

In addition to the accountant you might want a bookkeeper.

For people on your team I would recommend getting a bookkeeper, a marketing manager (someone to handle mailer, craigslist, SEO, bandit signs, etc), a property analyst (someone to run property comparisons and send out offers), and depending on how many incoming calls your getting, you may want another phone buyer.

This would save on attorney fees, closing costs, bookkeeping, etc.

At 100 units my recommendation would be to find a real estate bookkeeper if you want to maximize tax savings and get professional financial insight for your portfolio.