Categories turn a list of payments into an explanation. If they are too broad, everything ends up in “other”; if they are too specific, comparing months becomes exhausting. The aim is not to classify everything perfectly, but to maintain a system that answers useful questions.
Start with the decisions you want to make
Think about what you need to understand: how much utilities cost, what share goes to food, how much you spend on transport or which payments are discretionary. Create between eight and twelve main categories, and add subcategories only when they change a decision.
Separate the merchant from the purpose. A supermarket purchase may include food, cleaning products and personal care. To analyse the receipt as a whole, you can use a general category; to study individual products, keep more precise line-item categories.
Define consistent rules
Write a short description for each category and decide how to handle common cases: refunds, transfers, mixed purchases, reimbursements and shared expenses. Keep “other” as a temporary outlet and review its contents once a month.
- Housing and utilities.
- Food and household shopping.
- Transport and travel.
- Health, education and care.
- Leisure, eating out and personal purchases.
- Savings, debt and transfers, without mixing them with consumption.
Change the system carefully
If you renamed categories every week, you would lose comparability. Before creating a new one, check whether an equivalent already exists. When a category becomes too large, split it and apply the change to the relevant history as well.
A useful classification lets you compare equivalent periods and explain why spending changed. Kinset prioritises a stable taxonomy and lets you review exceptions so that automation does not take away your control.
This content is educational; adapt the structure to your household and to the decisions you need to make.