Budget by paycheck · transparent math · free

Paycheck budget calculator

Start from the money that actually arrives, split it per paycheck and per month, and see immediately whether fixed bills even fit inside the needs bucket.

Per-paycheck and monthly viewEditable 50/30/20Fixed-bills reality checkNothing saved or sent

Split one paycheck honestly

Enter what actually lands in your account. The split is editable — 50/30/20 is a starting point, not a rule.

Monthly take-home
Needs / month
Wants / month
Savings / month
Needs / paycheck
Wants / paycheck
Savings / paycheck
Needs left after fixed bills

Math: monthly = paycheck × factor (weekly 52/12, biweekly 26/12, semi-monthly 2, monthly 1). Nothing is saved or sent anywhere.

How it works

  1. Enter take-home pay per paycheck and how often you are paid.
  2. Monthly income = paycheck × frequency factor (weekly 52÷12, biweekly 26÷12, twice a month 2, monthly 1).
  3. The needs/wants/savings split applies to both views; savings auto-balances to keep the total at 100%.
  4. Fixed bills are subtracted from the monthly needs bucket so a shortfall is visible, not hidden.

What it will never do

  • No budgeting advice — the split percentages are yours to change.
  • No income, spending or savings prediction; it only rearranges numbers you typed.
  • Nothing is stored: reloading the page clears everything.

Questions

Is 50/30/20 a rule I should follow?

It is a common starting point, nothing more. The point of this calculator is that the split is editable — high-rent cities often need a much larger needs share.

Why per paycheck instead of per month?

Most people are paid weekly or biweekly, and overspending happens between paychecks. Seeing both views keeps the monthly plan and the between-paychecks reality connected.

Does it store my income?

No. There is no account, no localStorage and no network call. Numbers exist only while the page is open.

What does a red ‘needs left’ mean?

Your fixed bills are bigger than the entire needs bucket at the current split, so the plan is not realistic yet — raise the needs percentage or lower a bill.

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