The 50/30/20 Budget Calculator
Enter your monthly take-home pay. See exactly how much goes to needs, wants, and savings — then turn the percentages into envelopes you can actually spend from.
Your 50/30/20 Split
Your starter envelope breakdown
Three percentages aren't a budget yet. Here's how the typical household splits each bucket into envelopes — adjust any line to match your life.
Want a target savings number first? Try the savings calculator → or read how the rule stacks up against envelopes in 50/30/20 vs. the envelope method →
Turn these percentages into envelopes
LazeeFish creates one envelope per line above, fills them automatically from your bank, and tells you the moment a bucket runs low. $5/month, 30-day free trial.
Build my budget — no credit cardWhat is the 50/30/20 rule?
The 50/30/20 rule is a budgeting framework that divides your after-tax income into three parts: 50% for needs, 30% for wants, and 20% for savings and extra debt payoff. It was popularized by Senator Elizabeth Warren and her daughter Amelia Warren Tyagi in the book All Your Worth, and it has stuck around because it's simple enough to remember without an app.
Needs are the things you genuinely can't skip: rent or mortgage, groceries, utilities, transportation, insurance, and the minimum payments on any debt. Wants are everything that makes life enjoyable but is technically optional — dining out, streaming, hobbies, travel, the nicer brand. Savings covers your emergency fund, retirement above any employer match, and extra payments that knock down debt faster than the minimum.
The rule uses take-home pay — your income after taxes and payroll deductions — because that's the money you actually direct. If your needs come in above 50%, which is common in expensive cities, treat the rule as a benchmark rather than a verdict: trim the wants bucket before you cut savings, since protecting the savings habit is what makes the whole thing work over years rather than weeks.
Where 50/30/20 stops is the day-to-day. Knowing you have $1,500 for wants doesn't stop you from spending $1,500 by the 18th. That's the gap envelope budgeting closes — it splits each bucket into named envelopes with visible limits, so the plan holds up after the first paycheck. The full comparison is in 50/30/20 vs. the envelope method.
Calculator FAQ
Is 50/30/20 based on gross or net income?
Net income — your take-home pay after taxes, health insurance, and retirement deductions. Because taxes are already removed, the 20% savings bucket sits on top of any 401(k) your employer withholds before you're paid. This calculator uses net (take-home) pay throughout.
What if my needs are more than 50% of my income?
Very common — in high-rent areas, housing alone can approach 50%. Treat the rule as a target, not a law. If needs run to 60%, pull the difference from the wants bucket before the savings bucket. The envelope breakdown above shows exactly which lines to shrink, and LazeeFish lets you set whatever percentages match your real situation.
How is 50/30/20 different from envelope budgeting?
50/30/20 sets the high-level percentages; envelope budgeting is how you enforce them day to day. The rule says spend 30% on wants — envelopes split that 30% into dining, entertainment, and shopping, each with a hard limit you see before you spend. Most people use 50/30/20 to set targets and envelopes to actually hit them.
Does the 20% savings bucket include my 401(k)?
If your 401(k) is deducted from your paycheck before you see it, it isn't part of this take-home calculation — so the 20% here is extra saving on top of it. If you save into an IRA or brokerage from your checking account, that contribution counts toward the 20% bucket. The goal is 20% of net pay going to your future in total, however it's split.
Also see: Savings calculator · Debt payoff calculator · Free budget template · How to budget money