Break down your take-home pay into 30% housing, 30% necessities, 30% financial goals, and 10% wants for any pay schedule.
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 average 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. These are planning assumptions; actual annual pay counts and calendar-month receipts may differ
- 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 allocation targets and a 30% annual financial-goals target. Monthly income rounds to a cent, then remaining allocation cents are distributed by largest fractional remainder, with ties in the displayed category order, so the four amounts add up exactly. The annual goals target uses annualized income and can differ from 12 rounded monthly allocations. Count each expense once across categories. 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-home | Housing (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.
