@m501c3 

"For the purchase and sale of Money Market shares, should I create a bank sub-account for the Money Market fund, and list these transactions as transfers back and forth to the Schwab parent bank account?"

Based on the fact that your NFP does not require a lot of detail on the balance sheet and because these are all fixed-income securities, I would just have a Schwab parent account with no sub-accounts.  That way, you can just create deposits when interest is earned and there are no entries needed for transfers.  That's my personal preference.  The more detail you have on the balance sheet, the more work to record individual transactions (transfers) that just offset (CD maturing, etc.).  Your Schwab statements will always suffice for detailed balances.  Just my $.02