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Budget Calculator

Split your take-home pay into needs, wants and savings with the 50/30/20 rule, and see how it compares with what you really spend.

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Your pay after tax. Not sure? Work it out with our Paycheck Calculator.

Your costs a month (examples: change them to yours)

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$
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Left each month

$450

You spend $3,750 and save $300 of your $4,500 take-home pay

Needs
$3,150 (70%)
Saving
$300 (7%)
Where your money goes
  • Needs$3,150
  • Wants$600
  • Savings$300
  • Left over$450

What this means

Give the $750 you don’t spend a job: first an emergency fund of three to six months of needs ($9,450–$18,900), then clearing expensive debt, then investing for later.

The 50/30/20 guide would save $900 a month, $600 more than now.

Compared with the 50/30/20 guide

GuideYou
Needs (50%)$2,250$3,150Over
Wants (30%)$1,350$600✓
Savings (20%)$900$300Under

What to do next

  • Move your $450 left over into savings. You’d then need $150 more a month to save 20%.
  • Your needs are $900 over the 50% guide. Housing is usually the biggest cost to look at.
  • Aim for an emergency fund of 3 to 6 months of needs: $9,450 to $18,900.
Assumptions in this estimate
  • Needs are rent or mortgage, bills, groceries, transport, insurance and health, and debt payments. Wants are everything else you spend. Savings is money you put aside or invest.
  • The 50/30/20 guide is a simple starting point, not a strict rule. Where housing is expensive, needs often take more than half.
  • Fortnightly and weekly pay are turned into a monthly amount (26 fortnights or 52 weeks a year).
Spotted a mistake? Tell us

How the calculator works

  1. Your pay: your take-home pay, a month, a fortnight or a week.
  2. Your costs: rent or mortgage, bills, groceries, transport, insurance and health, debt payments, fun and savings. The boxes start with example amounts: change them to yours.
  3. What’s left: the big result is what you have left each month. Below, you can see how you compare with the 50/30/20 guide, and what to do next.

Not sure what you take home? Use our paycheck calculator.

The 50/30/20 rule

Split your take-home pay three ways: 50% on needs, 30% on wants and 20% on savings and paying off debt. Here’s what that means a month:

Take-home a month Needs (50%) Wants (30%) Savings and debt (20%)
$3,000 $1,500 $900 $600
$4,000 $2,000 $1,200 $800
$4,500 $2,250 $1,350 $900
$5,000 $2,500 $1,500 $1,000
$6,000 $3,000 $1,800 $1,200
$8,000 $4,000 $2,400 $1,600

Needs, wants and savings

  • Needs: what you must pay: housing, bills, groceries, transport, insurance and minimum debt payments.
  • Wants: the extras, like eating out, shopping, subscriptions and holidays.
  • Savings and debt: your emergency fund, retirement saving and anything you pay off debt beyond the minimum.

If your needs are more than 50%

That’s common, especially where housing is expensive. Try a 60/20/20 split, look at your biggest costs first, such as housing, your car and insurance, and keep saving something, even if it’s less than 20%.

Where to put your savings

  1. A starter emergency fund, so a surprise bill doesn’t go on a card. Aim for 3 to 6 months of essential spending over time: see how much to keep in an emergency fund.
  2. High-interest debt, such as credit cards, which usually costs more than savings earn. The debt payoff calculator shows the quickest way to clear it.
  3. Your goals and retirement: get your full employer 401(k) match, then save for what matters to you. The savings goal calculator shows how much to put away each month.

Make it stick

Set up automatic transfers to savings on payday, so you save first and spend what’s left. Check your budget every few months, and whenever your pay or rent changes. For a step-by-step plan, see how to make a budget, or take the free money check-up. If anyone depends on your income, check you have enough cover with the life insurance calculator.

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Frequently asked questions

What is the 50/30/20 rule?

A simple way to split your take-home pay: 50% on needs, 30% on wants and 20% on savings and paying off debt. On $4,500 a month, that’s $2,250, $1,350 and $900.

What counts as needs and wants?

Needs are what you must pay: housing, bills, groceries, transport, insurance and minimum debt payments. Wants are the extras, like eating out, shopping, subscriptions and holidays.

What if my needs are more than 50%?

That’s common, especially where housing is expensive. Try a 60/20/20 split, look at your biggest costs first, and keep saving something, even if it’s less than 20%.

How big should my emergency fund be?

A common aim is 3 to 6 months of essential spending. With $2,250 a month of needs, that’s $6,750 to $13,500.

Should I save or pay off debt first?

Build a small emergency fund first, then pay off high-interest debt such as credit cards, which usually costs more than savings earn. Our debt payoff calculator shows the quickest way to clear it.

Should I budget with gross or take-home pay?

Take-home pay: it’s what you actually have to spend, after tax and deductions. If your employer takes 401(k) contributions from your pay, they already count towards your savings.