30/30/30/10 Budget Rule + Calculator
The 30/30/30/10 budget rule splits your monthly after-tax income into four categories: 30% for Housing, 30% for Living Expenses, 30% for Financial Goals, and 10% for Personal Spending.
Type in your monthly after-tax income and the pie chart will split it into Housing, Living Expenses, Financial Goals, and Personal Spending.
Want to know how the 30/30/30/10 rule works?
30/30/30/10 Budget Calculator
Type in your monthly after-tax income and the pie chart will split it into Housing, Living Expenses, Financial Goals, and Personal Spending.
Rent or mortgage, insurance, property taxes, and home fees.
Groceries, utilities, transport, phone, insurance, and debt minimums.
Emergency fund, extra debt payments, savings, and investments.
Dining out, entertainment, hobbies, and anything fun.
What Is the 30/30/30/10 Budget Rule?
If you’ve ever felt like your rent deserves its own budget category rather than getting lumped in with groceries and utility bills, the 30/30/30/10 rule was built for that.
It splits your monthly after-tax income four ways: 30% for housing, 30% for living expenses, 30% for financial goals, and 10% for personal spending.
It’s more detailed than the 50/30/20 rule, but that extra detail is the whole point — each major area of your spending gets its own allocation instead of competing inside one broad bucket.
30% for Housing
The first 30% goes entirely to housing, which is what makes this method distinct from most others. In the 50/30/20 rule, housing sits inside the 50% needs category alongside groceries and utilities. Here it gets its own line, which gives you a clearer read on whether your rent or mortgage is actually affordable relative to your income.
What falls in here:
- Rent or mortgage
- Home or renter’s insurance
- Property taxes (if you own)
- Body corporate, strata, or HOA fees
On a $4,000 monthly income, that’s $1,200 for housing.
30% for Living Expenses
The second 30% covers everything else that keeps daily life running — recurring costs that aren’t housing but show up every month regardless.
What falls in here:
- Groceries and household supplies
- Utilities: electricity, water, gas, internet
- Transportation: fuel, car insurance, or transit pass
- Phone plan
- Health insurance and prescriptions
- Childcare and school fees
- Minimum debt payments
On a $4,000 income, that’s another $1,200. Between housing and living expenses, you’re at $2,400 before savings or personal spending get allocated — 60% of income going toward keeping the household running.
30% for Financial Goals
This is where the 30/30/30/10 rule puts more weight than most budgeting methods. Where the 50/30/20 rule puts 20% toward savings, this one bumps it to 30%, which makes a real difference if you’re actively trying to pay down debt or build an emergency fund.
What falls in here:
- Emergency fund contributions
- Extra debt repayments beyond the minimum
- Retirement savings
- Investment accounts
- Saving toward a specific goal: a home deposit, a car, travel
On a $4,000 income, that’s $1,200 a month going toward your financial position — $14,400 over a year before any interest or returns.
10% for Personal Spending
The last 10% covers anything that makes life enjoyable but isn’t a necessity. On a $4,000 income, that’s $400 a month, which is workable but requires being intentional about how you use it.
What falls in here:
- Dining out and coffee
- Streaming, movies, entertainment
- Clothing and personal shopping
- Hobbies, leisure, gifts
The 10% is tight by design. This method prioritizes financial progress, so if you want a generous going-out budget, a different framework is probably a better fit.
Who Is the 30/30/30/10 Budget For?
It suits people who want housing to have its own category, who are actively working on a savings or debt payoff goal, and who find that broader methods leave too much room for spending to drift unnoticed. It works best with stable, predictable monthly expenses.
It’s less suited to people in high-cost areas where housing takes more than 30% of income, or to anyone with variable income where fixed percentages are hard to maintain consistently.
How It Compares to Other Budget Methods
The 30/30/30/10 rule allocates more to savings than any of the others in the table and is the only one that gives housing its own category. The trade-off is the tightest personal spending allowance of the group. For a fuller comparison, there’s a breakdown of budgeting strategies worth reading through.
Tips for Making It Work
Check your housing percentage first.
Calculate what 30% of your take-home pay actually is and compare it to your rent or mortgage. If housing is already at 38% or 40%, the math won’t balance without adjusting something else.
Move savings out first.
The 30% financial goals category works best when it leaves your account as soon as income arrives, before other spending decisions get made. Treating it like a fixed bill rather than whatever’s left over at month end is what makes the difference.
Be deliberate with the 10%.
Because it’s small, a few unplanned coffees and a mid-week dinner out can wipe it out quickly. Deciding in advance how to split it — a set amount for eating out, a set amount for entertainment — makes it last longer.
Adjust if you need to.
The percentages are a framework, not a fixed formula.
If housing genuinely costs more than 30% where you live, shift the personal spending or living expenses categories slightly. The savings allocation is the one worth protecting most.
Pros and Cons
- Housing gets its own category, which gives a clearer view of one of the biggest costs most people carry
- The 30% savings allocation is higher than most other percentage-based methods
- Four distinct categories make it easy to see where money is going without detailed tracking
- Suits people actively working toward a specific savings or debt repayment goal
- The 10% personal spending category feels tight, especially on lower incomes
- Doesn't work well in high-cost areas where housing regularly exceeds 30% of income
- Less flexible for variable or irregular income
- Slightly more structure than simpler frameworks, which can feel like more maintenance
Check Out More Money Management Tools
50/30/20 Budget
Split income into needs, wants, and savings.
70/20/10 Budget
Allocate income to needs, savings, and debt or giving.
Zero-Based Budget Calculator
Assign every dollar of your income a purpose.
Goal Savings Calculator
Calculate how much to save each month to hit your goal.
Emergency Fund Calculator
Find out how much you need in your safety net.
Grocery Budget Calculator
Figure out your recommended monthly grocery budget.