I also add a note to each cell, showing the details behind the spend. For example, if I add a $50 debit to our Dining Out line, my note will show "$50 - Dinner at El Torito Grill." It's interesting to look back from time to time in order to re-evaluate whether we'd do it again, do it again differently, or not repeat it again ever.
The Add Comments feature is ideal for this. Just move the cursor over the cell to see the comment. Particularly useful for differentiating once-off from recurring expenses.
I keep a worksheet tab for each budget year, which allows me to compare results looking back, and project results going forward. It took a good chunk of time to set the spreadsheet up initially, but now that it's done I spend perhaps 10 minutes a day keeping it up to date.
This is how I organize NW spreadsheets too. I am in year 1 of the budget. Over the year my spreadsheet has evolved as I tweaked it to help answer my questions, such as "what are my basic lifestyle expenses excluding taxes, savings and debt repayment?".
Another trick I do is to populate every month with the recurring items. For example, I know what my monthly condo fees will be (unless there is an increase) and I know what tax installments I will have to pay every three months.
Below the spreadsheet I have set up a Notes section. For each month I have a commentary, e.g. "Don't forget to send Revenue Canada a check for $X before December 15" or "Airfare and accommodation for December vacation already paid".
At year end I will just copy the spreadsheet to a new tab, label it 2014, adjust the total amount budgeted in each category based on experience and expected inflation, and delete all other numbers (but not formulas). Then it's good to go. I do not open it daily. Instead I save all receipts in a Ziplok bag, and on the first of the month, I print off my bank statement and credit card statement for the previous month. I do all the entries at that time and shred the statements and receipts (unless needed for warranties). Data entry takes about 20 minutes and analysis as long as you want!
I do not download Visa statements directly into a spreadsheet as I find that their assignment of spending categories does not match mine.
I populate the spreadsheet with a years worth of funds on January 1, line by line, and then spend against those funds over the ensuing 12 months. The last column on the right shows "Amount Remaining" for each line item, which provides a powerful incentive to remain on track.
I do something similar but I call the amount remaining the Variance. I also have a column that indicates whether I expected a positive or negative variance. It is interesting to compare observed versus expected spending. For the most part it has been within the ballpark, but entertainment, clothing, gifts, groceries and healthcare all have positive variances while travel will have a negative variance by the end of the year (I cut my original travel budget by $2000 but my original instinct was correct).