The rule that simplifies any budget.
Created by Elizabeth Warren, the 50/30/20 rule is the most used method in the world to organize income. And it works in Brazil — with a few adjustments.
How to apply 50/30/20 in practice
Calculate your real net income
Add salary, freelancing, rents, and side income. Deduct taxes and social security. This is the base number — there is no point planning with gross salary.
List needs (50%)
Housing, condo fees, electricity, water, internet, basic groceries, work transport, health plan, essential medication. If it goes over 50%, something needs to be reduced.
List wants (30%)
Streaming, gym, delivery, snacks, movies, non-essential clothes, travel. If you are in the red, this is the first slice to cut.
Protect the 20% savings
Before spending, transfer the 20% to a separate account. "Pay yourself first" is the golden rule of every millionaire. No exceptions.
Adaptations for Brazilian reality
50% is too little for housing in Brazil.
In capitals like SP and RJ, housing alone can consume 40-50%. If that happens, reduce wants to 15-20% and keep the 20% savings. Or consider sharing an apartment, moving to a different area, or negotiating rent.
20% savings is impossible on minimum wage.
Start with 5% or 2%. The percentage is not sacred — the habit is. Increase gradually as your income grows. R$ 50 a month is already a powerful start.
30% wants is too much.
It is the balance between living today and planning tomorrow. If you cut 100% of pleasures, you give up in 2 weeks. The 30% guarantees emotional sustainability in the plan.
Nudinn shows your 50/30/20 slice in real time
- Monthly pie chart: see exactly how much is going to each category.
- Deviation alert: if needs go over 50%, Nudinn warns you immediately.
- Percentage goals: set your ideal (40/30/30, 60/20/20) and track progress.
- Monthly comparison: discover if you are improving or worsening your distribution.
R$ 23.90/month — less than R$ 0.80 a day. Start free.
"Based on your history, this purchase could compromise 40% of your reserve."
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Read GuideQuestions about the 50/30/20 method
What goes into needs vs wants?
Needs: everything you need to live with dignity (housing, basic food, health, transport to work). Wants: everything that improves quality of life but is not essential (streaming, delivery, travel, branded clothes).
Which category does debt go into?
The minimum debt payment goes into needs. The extra payment (above the minimum) goes into the 20% savings/investment, because it is building net worth.
Can I use 40/30/30 or another proportion?
Of course. 50/30/20 is a starting point, not a prison. Those who earn more can do 40/20/40. Those in debt can do 60/20/20 (or even 70/10/20) until they balance.
Where to keep the 20%?
In a separate account, preferably at a different bank from your daily one. This creates psychological friction against withdrawal. Emergency fund first, investments after.
Theory is useful. Practice is power.
You just learned strategies that change finances. Now put them into practice with Nudinn — preventive alerts, balance forecasting, and automatic control that does the heavy lifting for you.
R$ 23.90/month on the Premium plan — less than R$ 0.80 a day. Less than a coffee to never worry about the end of the month again.