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50/30/20 Budget Calculator Guide
The 50/30/20 rule is the simplest budget that actually works: split your take-home pay into needs, wants, and savings. This calculator does the split and compares it to what you're really spending.
50% needs, 30% wants, 20% savings and extra debt payments — all based on take-home pay, not gross salary. On $4,000 a month that's $2,000 / $1,200 / $800.
What Counts as a Need?
Needs are things you genuinely can't skip: rent or mortgage, groceries, utilities, transport to work, insurance, and minimum debt payments. Wants are everything optional — dining out, streaming, holidays, hobbies, upgrades. The honest test is whether skipping it for a month would cause a real problem or just be annoying.
The 20% Is the Point
The savings slice covers your emergency fund, retirement contributions, and any debt payments above the minimum. It's the part most people cut first when money is tight, which is exactly backwards — treating it as a fixed bill you pay yourself is what makes the rule work.
When 50/30/20 Doesn't Fit
In expensive cities, rent alone can eat well past 50%, which doesn't mean you've failed — it means the wants slice has to shrink to compensate. On a high income the opposite applies and you can push savings well beyond 20%. Treat it as a starting benchmark, not a rule you've broken.
If your needs run far above 50% for a long stretch, that's a signal about housing or transport costs rather than day-to-day discipline, and those are the levers worth pulling.
These results are estimates for education and planning, not financial advice. Actual returns, rates, and terms vary — check with a qualified professional before making decisions.
Related: Emergency Fund Calculator, Salary Calculator, and Debt Snowball Calculator.
Frequently Asked Questions
What is the 50/30/20 rule?
Split your take-home pay into 50% for needs, 30% for wants, and 20% for savings and extra debt payments.
Is 50/30/20 based on gross or net income?
Net — your take-home pay after tax, which is the money that actually reaches your account.
What counts as a need versus a want?
Needs are unavoidable costs like housing, groceries, utilities, transport, insurance, and minimum debt payments. Wants are optional spending such as dining out and subscriptions.
What if my needs are more than 50%?
That's common in high-cost cities. Shrink the wants slice to protect savings, and look at housing or transport costs, which are the biggest levers.
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