How it’s done
Every teenager believes two things: that adult life is freedom, and that the household's money stretches further than it does. This activity corrects both without a lecture — with a spreadsheet.
- The scenario: «you move out tomorrow». Their imaginary life, in their real city: a room or a small apartment (looking up real rental prices together is the first cold shower), a month of food, transport, a phone, electricity and water, some clothes, some social life. Every number is genuinely researched, never invented.
- Then, the income. What does a first job — the kind she could actually get — pay? Looking up real listings closes the loop — and produces the most educational arithmetic of her adolescence: the subtraction between what you earn and what it costs to live.
- The third column is the conversation. What gets cut when it doesn't add up? Sharing housing, cooking at home, walking? That's where the decisions adults make in silence show up — and your own life becomes the best material in the course: what you chose, what you cut, in what order everything arrived.
Keep the sheet: revisiting it months later, with prices and dreams updated, turns it into a tradition — and into a compass when real independence draws near.
What it builds — the why
Financial literacy without abstractions: budgeting, cost of living, and priorities learned with the prices of their own city and their own future life. An exact dose of realism — not to scare him away from independence but so he plans it with his feet in the numbers. Gratitude nobody asked for: the spontaneous discovery of what it costs to keep up the home that keeps him going tends to change the tone of more than one household complaint. And a wide door into a conversation about what almost no family talks about plainly: money, its limits, and its decisions.
How it changes with age
13–15 Early adolescence
16–18 Adolescence
Variations
Open family version: budget something real for the household together — the vacation, the end-of-year party — with the teen inside the real decisions, cuts included. It connects naturally with their first business (`primer-negocio-del-teen`) on the income side and with the real supermarket (`presupuesto-real-del-supermercado`) on the spending side.
What to watch for in your child
Tone is everything: if the activity turns into «so you see what everything you take for granted costs», it dies in the spreadsheet's first row. It's a joint exploration, not an emotional invoice. Watch the fear extreme too: the goal is «this can be planned and it's doable», not «you'll never be able to leave». And brace for uncomfortable questions about the household's numbers: decide beforehand how much transparency you want — any honest level works better than dodging.