Monthly Budget Categories

Monthly Budget by Spending Category

Category-based budgeting hands a fixed slice of your net income to each expense group, working from limit_category = pct × net_income. Brazilian reference ranges come from DIEESE family-budget surveys and the SPC Brasil Indicador de Reeducação Financeira. They point to roughly: housing 25–30%, food 15–20%, transport 15%, health 5–10%, education 5%, leisure 5–10%, clothing 3–5%, other/savings 5–10%.

Where the 50/30/20 rule keeps things broad, this approach zooms in. You can see precisely which category is leaking money, and that matters a lot for families with income that swings month to month or who are chasing a particular goal, like saving for a property or clearing a school loan.

Applications

Spreadsheets, fintech apps and financial planners lean on category budgets as the backbone of personal cash-flow analysis. The same breakdown shows up in mortgage affordability checks and in real-estate valuation standards like ABNT NBR 14653, where committed income gets split out before any loan is approved.

FAQ

What if a category is well above the suggested range? Take it as a red flag worth digging into. In big cities the culprit is usually housing or transport. You can renegotiate (refinance, move to a cheaper neighborhood) or make up for it by trimming another category.

Are the percentages fixed? Not at all. They’re reference ranges. A retiree with no kids might put 0% toward education and 15% toward health, while a young couple flips that around.

Where do credit-card invoices go? Split each line of the invoice into the category it really belongs to (food, leisure, transport) instead of lumping the whole card into one bucket. Skip that step and the budget stops telling you anything.