CalcJoy

Monthly Budget Calculator

See how income, expenses, savings, and debt affect your monthly flexibility.

Most used50/30/20 Budget CalculatorSavings Rate CalculatorFinancial Runway Calculator

Inputs

Result

Money left over
$1,200
Spent $3,800.00 of $5,000.00 · savings rate 16.0%
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Visual breakdown

Income
$5,000.00
Expenses
$3,800.00
Savings
$800.00
Left over
$1,200.00
Expenses $3,000.00 — 60%
Savings $800.00 — 16%
Left over $1,200.00 — 24%

System view

See how this fits into your full financial system.

Zoom out and connect income, expenses, debt, savings, housing, transportation, and runway in one private system view.

Financial System View About CalcLife

Formula

Left over = income − (expenses + savings). Savings rate = savings ÷ income × 100.

Example

$5,000 income, $2,900 expenses, $800 to savings → $1,300 left over, savings rate 16%.

Related: 50/30/20 · Savings rate · Paycheck

How to use

  1. Use your typical take-home (after tax) monthly income.
  2. Group small categories into 'Other' to keep it simple.
  3. Treat savings as a planned 'expense' before discretionary spending.
  4. Re-check whenever income or rent changes.

When it's useful

  • Building a first budget from a paycheck.
  • Spotting categories that have crept up.
  • Pre-checking a lifestyle change before committing.

Common examples

$5,000 income, $3,000 expenses
$2,000 left for savings and goals.
Housing 30%, food 12%
Common healthy split.
$800 saved on $5,000 income
Savings rate ≈ 16%.

Common answers

  • How much should I spend on rent?
    A common cap is ≤ 30% of gross income — adjust for high-cost cities.
  • How much should I save each month?
    A common target is 15–20% of gross income, or whatever beats your previous month.
  • What if I'm in the red?
    Cut variable categories or grow income — re-run until the leftover is positive.
  • Should I use gross or take-home?
    Use take-home pay for budgets unless you're explicitly modeling gross.
  • Where do irregular bills go?
    Divide annual amounts by 12 and budget them monthly so they don't surprise you.

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Attribution: “Powered by CalcJoy”.

Frequently asked

Should savings count as an expense?

Most planners treat 'pay yourself first' savings as a fixed line — that's how this calculator handles it.

What if I'm negative?

Trim the largest non-fixed categories first (subscriptions, food, transportation) before touching housing or debt.

Does it store my numbers?

No. Inputs stay in your browser. Optional history is local only.

What about irregular income?

Use a conservative monthly average — typically your last 6–12 months.

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Estimates only — not financial advice.