The 50/30/20 rule
3 categoriesHalf your income for what you need, 30% for what you want and 20% for saving or paying down debt. It is the best-known split and the easiest to remember, which is why more people stick to it: three numbers that fit in your head.
Use it if: you want to start today without overthinking it, or detailed categories have overwhelmed you before.
Watch out: where rent eats more than half the pay, 50% doesn't work. «Tight month» fits better than forcing the percentages.