[EnhancedJax]

Sorry, I don't seem to understand your question... I think you're talking about categories and subcategories? You can have household as the parent category and all the expenses under it. The must/need/want system (I think) is used by a lot of expense trackers, and for Bagels I used it as a way to limit unnecessary spending (want%).

I primarily built Bagels starting from my use case, so maybe some of the modelling might not suit expenses of large quantities. I haven't got to the point in life where I have to pay taxes and bills yet haha

[netsharc]

Seems like grandparent commenter wants to add classifying codes to items s/he's bought.

For example from that PDF, bagels would have the classification "23490 Bread and other bakers' wares". That's under "23 Grain mill products, starches and starch products; other food products" -> "234 Bakery products".

To be able to see how often one buys grain products, and then bread products, is either funny, or an unnecessary amount of detail.

I've thought of scanning all my grocery store receipts, for example to calculate how many liters of Coca-Cola I've bought in a time period...

[gorgoiler]

Yes, categories and sub-categories are important things to standardize if you have multiple people contributing to one cost reporting tool. My analogy was with the Dewey decimal system: a standard set of categories agreed upon by librarians so that they all agree how to organize their bookshelves!