30/30/30/10 Budget Calculator

By: Patrick Myers Patrick Myers is the CEO and Founder of Calculator Academy. He has over eight years of experience developing online calculators and holds a B.S. in Mechanical Engineering. His work focuses on formula implementation, calculator accuracy, unit conversions, and creating practical tools that are easy to use.

Last Updated: July 27, 2026

Break down your take-home pay into 30% housing, 30% necessities, 30% financial goals, and 10% wants for any pay schedule.

Use after-tax income. The rule splits it 30% housing, 30% necessities, 30% financial goals, 10% wants.

30/30/30/10 Budget Formula

The 30/30/30/10 method divides take-home pay into four fixed shares:

Housing = I * 0.30
  Necessities = I * 0.30
  Financial goals = I * 0.30
  Wants = I * 0.10

Variables:

  • I is monthly take-home (after-tax) income. Biweekly pay converts as pay x 26 / 12, weekly as pay x 52 / 12, and annual as pay / 12
  • Housing (30%) covers rent or mortgage plus directly housing-related bills
  • Necessities (30%) cover food, transportation, utilities, insurance, and childcare
  • Financial goals (30%) cover savings, investing, and debt payoff beyond minimums
  • Wants (10%) cover dining out, entertainment, subscriptions, and hobbies

Select your pay frequency and enter your take-home amount; the calculator returns all four monthly allocations and the annual total flowing to financial goals. The method’s signature is its full 30% commitment to goals – triple the wants allowance – which makes it popular with aggressive savers and people catching up on retirement or debt.

30/30/30/10 Splits at Common Income Levels

The rule applied to a range of monthly take-home incomes.

Monthly take-homeHousing (30%)Necessities (30%)Goals (30%)Wants (10%)
$3,000$900$900$900$300
$4,000$1,200$1,200$1,200$400
$5,000$1,500$1,500$1,500$500
$6,500$1,950$1,950$1,950$650
$8,000$2,400$2,400$2,400$800

Example Problems

Example 1: A monthly salary.

Take-home pay is $4,000 per month:

Housing = 4,000 x 0.30 = $1,200. Necessities = $1,200. Financial goals = $1,200. Wants = 4,000 x 0.10 = $400. Over a year, $14,400 flows to savings, investing, and debt payoff.

Example 2: Weekly pay.

You take home $950 per week. Monthly income = 950 x 52 / 12 = $4,116.67. Each 30% share is $1,235, and wants get $411.67.

Frequently Asked Questions

Who is the 30/30/30/10 budget best for?

People prioritizing aggressive progress – paying down debt, catching up on retirement, or saving for a house – who are willing to cap fun spending at 10%. It also suits renters in mid-cost cities where 30% genuinely covers housing. If your housing alone exceeds 40% of take-home pay, a rule this strict will need adapting before it helps.

What if my housing costs less than 30%?

Redirect the surplus to financial goals rather than letting it drift into wants – the rule’s power comes from keeping the goals share large. Cheap housing is the single biggest budget advantage there is; compounding it into investments multiplies that advantage over time.

Is 10% for wants realistic?

It is tight by design – on $4,000 take-home it is $400 a month for everything fun. Many people run it seasonally: strict 30/30/30/10 while attacking a specific goal, then relaxing toward a 50/30/20-style split once the goal is met. A budget you can actually keep beats a stricter one you abandon.

30/30/30/10 Budget Calculator