🗂️ Budget Calculator

Split your monthly income using the 50/30/20 budgeting rule.

About this tool

Applies the widely used 50/30/20 budgeting guideline to your monthly take-home income: 50% toward needs (rent, groceries, utilities, minimum debt payments), 30% toward wants (dining out, hobbies, subscriptions), and 20% toward savings and extra debt repayment.

It's a starting framework, not a rigid rule — some situations reasonably call for a different split, especially with high housing costs or aggressive debt payoff goals.

Worked example

A $4,000/month take-home income splits into $2,000 for needs, $1,200 for wants, and $800 for savings and extra debt payments under this guideline.

How to use it

Enter your monthly take-home (after-tax) income.
Press Calculate to see the suggested split.
Use the three figures as target ceilings for each spending category, adjusting for your own priorities.

Tips

Use take-home (net) pay here, not gross salary — the 50/30/20 rule is meant to apply to money you actually have available to spend.
If your needs consistently exceed 50%, that's useful information on its own — it may point toward reducing fixed costs or adjusting the target split for your situation.
Treat these three numbers as a planning starting point, not a mandate — some households reasonably weight savings higher or lower depending on goals and life stage.

FAQ

Is the 50/30/20 rule the only good budgeting method?

No — it's one popular framework among several (zero-based budgeting and envelope budgeting are common alternatives); it's a reasonable starting point, not the only valid approach.

What counts as a "need" versus a "want"?

Needs are typically costs you can't reasonably avoid — housing, groceries, utilities, minimum debt payments, and similar essentials; wants are more discretionary — dining out, entertainment, upgrades beyond a functional baseline.

Should I use gross or net income?

Net (take-home) income — the rule is meant to apply to money actually available after taxes, since that's what you have to allocate.

From the blog: getting the most out of this tool

We picked the 50/30/20 rule specifically because it needs just one input to produce a genuinely useful starting point — more detailed budgeting tools ask for a dozen category estimates before giving you anything, which is often more friction than a first-pass budget needs.

Once you have this rough split, our Take-Home Pay Calculator and Savings Goal Calculator are natural next stops for refining the income and savings sides in more detail.

📖 Want the fuller explanation?

See The 50/30/20 Budget Rule for the reasoning behind this calculation, with worked examples.