The 50/30/20 rule is the simplest budget that works: needs, wants, and future-you. Enter your take-home pay and see your targets — then check them against what you really spend.
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Used on spending you'd do anyway — inside your 50% and 30% — the right card quietly hands back 2–6%. Used to spend more than you planned, it costs far more than it earns. Pay in full, every month, and the rewards are pure upside.
50/30/20 is a starting framework, not a rule for everyone — high cost-of-living areas often need a higher needs share. Adjust to your reality. Educational, not financial advice.