My approach also is similar to Sailor Sam's above. I use credit or debit cards to pay for almost everything, and use Mint to track our spending and investment balances. I would prefer to just use Mint but haven't figured out a good way to separate his cards/spending from mine, and I'm mostly interested in the latter (he pays more of the fixed expenses whereas my spending tends to include more discretionary stuff, which is what I'm trying to keep close tabs on). My process is a little cumbersome but it works for me so far. At month end, I do this:
1. I export the transactions for each of the credit cards I use regularly (in total about 4-5, including my check card/checking account, an Amazon card, and a couple other points-driven cards) from Mint into an Excel spreadsheet.
2. In the Excel sheet, I delete some extraneous columns and re-order others as follows: date, description, category, amount, notes, account name (which credit card), transaction type (debit or credit).
3. I copy rows for the relevant month into a new monthly tab in a Google drive spreadsheet.
4. I add up all the spending and copy the grand total into an "overview" tab in the Google spreadsheet, so I can see how this month's spending stacks up with previous months.
Would love tips and tricks from others if I'm missing a way to do similar tracking in Mint itself, only for my cards (not my husband's). Overall though I find this more manual approach helps keep me accountable because I do look at every line item in a given month.