This useful site has been brought up before on this forum:
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Some may care to look at the tables showing quintiles of income. These have very detailed averages of expenditures covering many common categories. It may provide an easy method of comparing one's own expense categories to national averages for the income bracket.I keep a record of expenses, but not as detailed as these. Checked the expenses for maintenance and repair on a house, and estimate that most spend about 1.2% of the market value paid (excluding land) annually. It doesn't seem to vary much from bracket to bracket (presumably fairly constant to the market value). I also found my electric bill is well above average. I also found I apparently prefer good home cooking over entertainment.