The 50/30/20 rule, worked out on a real paycheck

What the 50/30/20 rule is

The 50/30/20 rule divides your income into three buckets. In the CFPB's teaching guide Learning about budgets (files.consumerfinance.gov), the rule puts 50 percent of income toward needs, 30 percent toward wants and 20 percent toward savings. The same guide says to build a budget from net income, the amount you bring home after taxes and other deductions.

• Needs (50 percent): what you have to pay to live and work. The CFPB's examples are rent or mortgage payments, groceries, utilities and transportation. Insurance, medical costs and minimum payments on debt usually belong here too.
• Wants (30 percent): things that would be nice to have but aren't necessary, such as dining out, vacations, entertainment and upgrades beyond the basic version of a need.
• Savings and debt (20 percent): emergency savings, paying down debt, and saving for education or retirement, all of which the CFPB lists in this bucket.

The line between needs and wants is where most of the judgment goes. The CFPB's own classroom examples list a cell phone as a want, though many people treat a basic phone as a need for work. The newest phone on a pricey plan is mostly a want. Groceries are a need, and the delivery fee on top is a want. Sort each cost by asking whether you'd still pay it if money got tight, and how much of it you'd still pay.

The CFPB guide also tells teachers to explain that 50/30/20 is only one rule to live by, and that not everyone can follow it. Treat it as a benchmark for checking your budget, and change the numbers when your situation calls for it.

Use take-home pay for the 50/30/20 rule

Running the rule on your salary overstates every bucket, because taxes, health insurance premiums and retirement contributions come out before you see the money. Start from what actually lands in your account.

If you're paid weekly or every two weeks, convert to a monthly figure carefully. A month is a little more than four weeks, so multiplying by four undercounts. Weekly pay of $900 is $900 × 52 ÷ 12 = $3,900 a month (multiplying by four would give $3,600). A paycheck of $1,800 every two weeks is $1,800 × 26 ÷ 12 = $3,900 a month (multiplying by two would give $3,600).

If you don't know your take-home pay yet, for a new job or a raise, a paycheck calculator can estimate it from your pay and your state.

A 50/30/20 budget example

Take the $3,900 a month from above. The rule sets targets of $1,950 for needs (half of $3,900), $1,170 for wants ($3,900 × 0.30) and $780 for savings and debt ($3,900 × 0.20). Now compare that with where the money goes in a real month.

Needs come in $390 over target ($2,340 − $1,950), and that $390 comes out of the other two buckets, $195 from wants and $195 from savings. The budget still balances. It runs 60/25/15 instead of 50/30/20, and the rule shows where the squeeze is. Rent and the car are taking money from savings.

In the example, the minimum loan payment counts as a need, because skipping it has real consequences. Any extra payment above the minimum would count in the savings and debt bucket.

When the 50/30/20 rule doesn't work

High cost of living

In an expensive city, rent can take a large share of take-home pay, and needs can pass half before you've bought groceries. In that case the rule's numbers don't fit your costs, and squeezing groceries or skipping insurance to hit 50 percent would do more harm than an honest 60 or 65.

Irregular income

The rule assumes the same amount arrives every month. With hourly shifts, tips, commission or gig work, a 50/30/20 budget built on a good month will overspend in a slow one. A steadier approach is to budget needs from the low end of what you usually take home and route anything above it to a buffer first. Budgeting on irregular income shows how to set that baseline.

Heavy debt

If you're carrying high-interest card debt, 20 percent toward savings and debt may be too slow, and you might choose to cut wants hard for a while to pay it down faster. The rule leaves that choice to you.

How to adapt the 50/30/20 rule

The useful part of the rule is that it gives every dollar a bucket and makes you look at the balance between them. The exact numbers can change. Some people use 60/30/10 or 70/20/10 while costs are high, then shift back as income grows or a big bill goes away.

1. Sort last month's real spending into needs, wants, and savings and debt, and work out the share of take-home pay each one took.
2. Set a savings amount you can keep up every paycheck, even if it's below 20 percent, and move it on payday so it happens first.
3. Let wants absorb the difference. If needs are high, wants are usually the bucket you can change fastest.
4. Look for one need you can lower over time, such as insurance you can shop around, a phone plan or a lease that's coming up for renewal.
5. When your pay goes up, send part of the raise to savings and debt before your spending rises to meet it.

In the example, savings sit at $585, which is $195 short of the $780 target. Raising the monthly transfer to savings by $50 once a quarter, and cutting wants by the same amount, would bring savings to $785 a month after four raises ($585 + $200), within about a year.

The 50/30/20 budget for couples

A couple can run the rule two ways. You can apply it to combined take-home pay, as one household budget. Or each of you can apply it to your own pay and cover your share of the shared costs from your own needs bucket. The totals come out the same, but who pays what can look very different when incomes are uneven.

Their shared needs are rent of $1,800, utilities of $250 and groceries of $650, so $2,700 a month. Split down the middle, each pays $1,350. That fits inside Maya's $1,800 needs bucket, but it's $150 more than Chris's whole $1,200 needs bucket, before Chris's own phone or car insurance. On paper, Chris would look like the one overspending.

Divide the shared needs by income instead. Maya earns 60 percent of the household's take-home pay ($3,600 ÷ $6,000), so Maya pays $1,620 and Chris pays $1,080. Now Maya has $180 left in needs for personal costs and Chris has $120, and both of them can follow the rule. The bill split calculator runs this for your own numbers, and how couples split bills compares the methods.

Many couples end up with a mix. They run 50/30/20 on combined pay for the shared costs and shared savings, and each person keeps a wants bucket of their own to spend without explaining it. How well that works depends on how your accounts are set up and how much each of you wants to see, so agree on that first.

Start from the right number

The 50/30/20 rule starts from take-home pay. Miyo's free paycheck calculator estimates that number from your pay and your state.

Common questions